A controller that determines a temperature sensor value based on a signal received from a temperature sensor disposed in an exhaust conduit downstream of a heater. The controller further determines an estimated heater inlet temperature of the heater, determines an estimated exhaust flowrate within the exhaust conduit, determines a heater input power provided to the heater, and determines a temperature control parameter of the heater based on the temperature sensor value, the estimated heater inlet temperature, the estimated exhaust flowrate, and the heater input power. The controller further transmits, to a controllable aftertreatment component, a control signal based on the temperature control parameter.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F02D 41/02 - Circuit arrangements for generating control signals
F01N 1/00 - Silencing apparatus characterised by method of silencing
F01N 9/00 - Electrical control of exhaust gas treating apparatus
2.
AFTERTREATMENT SYSTEM INCLUDING DIFFERENTIAL PRESSURE SENSORS AND PRESSURE TUBE SEGMENTS
An aftertreatment system includes a decomposition housing, a doser coupled to the decomposition housing, a first unit upstream of the decomposition housing, a second unit downstream of the decomposition housing, a first differential pressure (DP) sensor, a second DP sensor, a first pressure tube (PT) segment, a second PT segment, and a third PT segment. The decomposition housing includes a decomposition housing port for providing fluid communication through the decomposition housing. The first unit includes a first port for providing fluid communication through a housing of the first unit. The second aftertreatment unit includes a second port for providing fluid communication through a housing of the second unit. The first PT segment is in fluid communication with the decomposition housing port, a first inlet of the first DP sensor, and a first inlet of the second DP sensor.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
G01L 13/00 - Devices or apparatus for measuring differences of two or more fluid pressure values
G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
A gas production system includes an electrolyzer configured to provide an electrolysis gas including a mixture of hydrogen gas and oxygen gas. The gas production system includes a housing having a housing inlet configured to receive the electrolysis gas from the electrolyzer. The gas production system includes a catalyst member disposed in the housing. The catalyst member includes a first catalyst bed configured to receive the electrolysis gas from the housing inlet. The first catalyst bed includes a first catalyst material. The catalyst member includes a second catalyst bed separated from the housing inlet by the first catalyst bed and configured to receive the electrolysis gas from the first catalyst bed. The second catalyst bed includes a second catalyst material different from the first catalyst material.
C25B 1/04 - Hydrogen or oxygen by electrolysis of water
C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
C01B 3/38 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
C01B 3/32 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
C01B 3/48 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents followed by reaction of water vapour with carbon monoxide
An inlet chamber includes an inlet defining an inlet axis that is configured to receive exhaust, a sidewall extending around a center axis, and an end wall coupled to the sidewall such that the center axis extends through the end wall. The sidewall and the end wall define an internal volume. The inlet chamber also includes a baffle assembly that is coupled to the end wall and extends into the internal volume. The baffle assembly includes a flat strip that has one or more elongated portions extending in a length direction, and one or more notches extending from the elongated portions in a direction transverse to the center axis and to the length direction.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
A mixer for an exhaust aftertreatment system that receives exhaust and a treatment fluid. The mixer includes a mixer body centered on a mixer body center axis. The mixer body includes a first portion that couples to a decomposition chamber housing. The mixer body further includes a second portion having a first edge at the first portion and having a first radius, and a second edge opposite the first edge and having a second radius less than the first radius. Each of the first edge and the second edge has an arc angle between 170 degrees and 210 degrees. The mixer body further includes a third portion extending from the second edge of the second portion in a direction at least partially along the mixer body center axis. The mixer further includes a wall coupled to the mixer body. The wall extends radially outward from the second portion.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01F 23/21 - Mixing gases with liquids by introducing liquids into gaseous media
B01F 25/10 - Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
A heater assembly includes an inlet body having an inlet body wall having an inlet body wall end portion. The heater assembly includes a heater body having a heater body wall. The heater body wall includes a heater body wall central portion. The heater body wall has a first diameter at the heater body wall central portion. The heater body wall includes a heater body wall outlet flange having a first outlet flange portion extending axially and radially outward from the heater body wall central portion at a first angle with respect to an extending direction of the heater body wall central portion, and a second outlet flange portion extending axially outward from the first outlet flange portion, substantially parallel to the heater body wall central portion, and contiguous with the first outlet flange portion. The heater body wall has a second diameter at the second outlet flange portion.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
A flow device for a mixer of an exhaust aftertreatment system. The flow device includes a plate and a plurality of conduits coupled to the plate. Each of the conduits includes a first sidewall extending outward of the plate, a second sidewall extending outward of the plate and opposing the first sidewall, a main wall extending from the plate and between the first sidewall and the second sidewall, a conduit inlet coplanar with the plate and that receives exhaust, and a conduit outlet forming an angle between 35 degrees and 145 degrees, inclusive, with the plate. The conduit outlet releases the exhaust received from the conduit inlet.
An aftertreatment system includes an inlet conduit assembly, an outlet conduit assembly, and an aftertreatment component cartridge. The inlet conduit assembly includes an inlet body including an inlet body wall portion and an inlet coupling flange portion. The outlet conduit assembly includes an outlet body including an outlet body wall portion and an outlet coupling flange portion. The aftertreatment component cartridge includes an aftertreatment component housing and an adaptor. The adaptor includes a first flange portion and a second flange portion coupled to the aftertreatment component housing, and an adaptor body contacting the inlet coupling flange portion and the outlet coupling flange portion. The adaptor body includes a first base surface, a crown surface, a first indentation between the first base surface and the crown surface, and a first gasket comprising a portion disposed within the first indentation.
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
F16L 23/04 - Flanged joints the flanges being connected by members tensioned in the radial plane
F16L 23/18 - Flanged joints characterised by the sealing means the sealing means being rings
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
9.
ESTIMATING BIODIESEL BLEND USING VIRTUAL SENSORS AND VIRTUAL SENSING METHODS
A non-transitory computer-readable media has computer-readable instructions stored thereon that, when executed by at least one controller, cause the at least one controller to: control an amount of hydrocarbons provided upstream of a diesel oxidation catalyst (DOC); determine a first temperature of exhaust gas at an inlet of the DOC, the exhaust gas produced from combustion of fuel; determine a second temperature of the exhaust gas at an outlet of the DOC; calculate a lower heating value (LHV) of the fuel based on the first temperature, the second temperature, the amount of hydrocarbons, and a flow rate of the exhaust gas; and estimate a percentage of biodiesel in the fuel based on the LHV.
F02D 19/06 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
10.
SYSTEMS AND METHODS FOR CONTROLLING REDUCTANT DECOMPOSITION AND DEPOSIT FORMATION
An aftertreatment system includes a conduit configured to receive an exhaust from an engine and a valve assembly coupled to the conduit. The valve assembly includes a shaft and a valve plate coupled to the shaft. The aftertreatment system includes a dosing module configured to introduce a reductant into the exhaust in the conduit. The aftertreatment system includes a controller communicably coupled with the valve assembly and the dosing module. The controller includes a processing circuit. The controller is configured to determine a temperature of the exhaust. The controller is configured to calculate a ratio of an amount of energy in the exhaust to an amount of energy needed to decompose the reductant. The controller is configured to generate an actuation command. The controller is configured to transmit the actuation command to the valve assembly to move the valve plate from a first position to a second position.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
An aftertreatment system comprises a first dosing system comprising a first doser, a first pressure sensor, and a first dosing pump and a second dosing system comprising a second doser, a second pressure sensor, and a second dosing pump, and a controller. The controller doses reductant to a SCR system. The controller determines a first pressure value associated with the first dosing system and a second pressure value associated with the second dosing system. The controller applies a target pressure override to the first doser. The controller determines a third pressure value associated with the first dosing system and a fourth pressure value associated with the second dosing system. The controller determines a difference between the third pressure value and the fourth pressure value. The controller compares the difference to a second threshold and generates an indication indicative of disruption in the first dosing system based on the comparison.
An assembly includes a first body, a second body, a fastener, and a nut. The first body includes an outer surface and an inner surface opposite the outer surface. The first body includes a first body through-hole that includes a first body threaded portion. The second body includes an outer surface and an inner surface opposite the outer surface. The second body includes a second body through-hole that is unthreaded. The fastener includes a fastener head and a fastener shank. The fastener shank extends through the first body through-hole and the second body through-hole. The fastener shank includes a fastener threaded portion located at least at a distal end of the fastener shank opposite the fastener head. The nut has a nut threaded portion. The nut threaded portion is engaged with the fastener threaded portion.
F16B 41/00 - Measures against loss of bolts, nuts, or pinsMeasures against unauthorised operation of bolts, nuts, or pins
F16L 23/036 - Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
An aftertreatment system includes a conduit and a mixer disposed in the conduit. The mixer includes a mixer body, an inlet cap, and an outlet flange. The mixer body includes an inlet end, a plurality of connectors arranged at the inlet end, and an outlet end downstream of the inlet end. The inlet cap is over the inlet end and includes a perforated plate, an inlet flange coupled to the perforated plate, and an annular plate. The perforated plate is coupled to the connectors and comprising a plurality of perforations. The annular plate is downstream of the perforated plate and coupled to the mixer body. The annular plate includes an aperture. The outlet flange includes an outlet flange body coupled to the outlet end, where the outlet flange body includes an inner edge and a flared portion extending upstream from the inner edge into the mixer body.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
G01N 1/10 - Devices for withdrawing samples in the liquid or fluent state
B01F 25/313 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
B01F 25/431 - Straight mixing tubes with baffles or obstructions that do not cause substantial pressure dropBaffles therefor
A mixer includes a reducing fluid injector, a disc-shaped injector, an elastic mat, and a hollow mixing chamber. The reducing fluid injector is configured to spray a reducing fluid into an exhaust gas flow. The reducing fluid injector is arranged along an axis. The disc-shaped injector support extends around the axis. The elastic mat is disposed on the disc-shaped injector support. The hollow mixing chamber extends around the axis and disposed on the elastic mat and separated from the disc-shaped injector support by the elastic mat. The hollow mixing chamber is tapered.
B01F 23/213 - Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
B01F 25/313 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
B01F 25/314 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
An aftertreatment system includes a housing and a tube assembly. The housing has a peripheral wall including an outer surface, an inner surface defining a passage configured to receive a flow of exhaust gas, and a peripheral wall aperture. The tube assembly includes a fitting assembly and a conveying tube. The fitting assembly includes a fitting body and a fitting tube. The fitting body includes a fitting body aperture, an upper surface, and a lower surface. The fitting body is inserted within the peripheral wall aperture and coupled to the outer surface. The fitting tube extends from the lower surface and is disposed in the passage and includes a fitting tube aperture at an inner end. The conveying tube is positioned partially within the fitting body aperture and extends outward from the fitting body and includes a conveying tube aperture at an inner end.
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
F01N 13/20 - Exhaust or silencing apparatus characterised by constructional features having flared outlets, e.g. of fish-tail shape
G01M 15/10 - Testing internal-combustion engines by monitoring exhaust gases
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
G01P 5/165 - Arrangements or constructions of Pitot tubes
16.
AFTERTREATMENT SYSTEM INCLUDING BRACKET FOR COUPLING TO AN AFTERTREATMENT SYSTEM COMPONENT
An aftertreatment system includes a first aftertreatment system component, a second aftertreatment system component, a third aftertreatment system component, a first bracket, and a second bracket. The second aftertreatment system component has a first end and a second end. The first end is connected to the first aftertreatment system component. The second end of the second aftertreatment system component is connected to the third aftertreatment system component. The first bracket has at least a first end and a second end. The first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component. The second end of the first bracket may be coupled to the second bracket or an isolator. The second bracket may be coupled to the first bracket or may be connected to an isolator and assist in supporting the second aftertreatment system component.
An aftertreatment system includes a bracket assembly for securing a component of an aftertreatment system to a structure. The bracket assembly includes a base bracket and a mounting bracket. The base flange includes a first base flange including a first base flange slot and a second base flange including a second base flange slot. The mounting bracket includes a first mounting flange including a first mounting flange slot and a second mounting flange including a second mounting flange slot. The mounting bracket further includes a mounting wall. The mounting wall extends from the first mounting flange to the second mounting flange. The base bracket is configured to receive the first mounting bracket. A portion of the first base flange slot overlaps a portion of the first mounting flange slot. A portion of the second base flange overlaps a portion of the second mounting slot.
F16B 2/08 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
F16L 3/12 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
F16L 23/028 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
F16L 3/10 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two members engaging the pipe, cable or protective tubing
18.
AFTERTREATMENT SYSTEM INCLUDING MIXER WITH EXHAUST SAMPLING FLANGE
An aftertreatment system includes an introduction conduit and a mixer disposed within the introduction conduit. The introduction conduit is centered on a mixer body center axis. The mixer includes a mixer body, an exhaust sampling flange, an outlet flange, and an outlet tube. The exhaust sampling flange is coupled to the mixer body at a location adjacent to a second end of the mixer body. The exhaust sampling flange includes exhaust sampling flange apertures arranged in an array that extends circumferentially around the mixer body center axis. The outlet flange is coupled to the second end downstream of the exhaust sampling flange. The outlet flange includes an outlet flange aperture. The outlet tube is coupled to the outlet flange. The outlet tube is in fluid communication with at least one of the exhaust sampling flange apertures. The outlet tube extends over a portion of the outlet flange aperture.
B01F 25/313 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
B01F 25/431 - Straight mixing tubes with baffles or obstructions that do not cause substantial pressure dropBaffles therefor
B01F 25/00 - Flow mixersMixers for falling materials, e.g. solid particles
An aftertreatment system includes an inlet body, a cartridge, and an outlet body. The inlet body includes an inlet body wall and an inlet engagement member. The inlet engagement member includes an inlet engagement member wall and an inlet coupling flange. The inlet coupling flange extends in a downstream direction from the inlet engagement member wall. The cartridge includes a cartridge wall and an adaptor that extends away from the cartridge wall. The outlet body includes an outlet body wall and an outlet engagement member. The outlet engagement member includes an outlet engagement member wall and an outlet coupling flange. The outlet coupling flange extends in an upstream direction from the outlet engagement member wall and towards the adaptor such that the adaptor is disposed between the inlet coupling flange and the outlet coupling flange.
A system, method, and apparatus for sensor tampering detection are provided. An aftertreatment system comprises a first leg comprising a first Selective Catalytic Reduction (SCR) system, a first doser, and a first NOx sensor, a second leg comprising a second SCR system, a second doser, and a second NOx sensor, and a controller. The controller determines satisfaction of enabling conditions. The controller doses reductant to the first and second SCR systems. The controller determines NOx values of the first SCR system and the second SCR system. The controller adjust the dosing of the first SCR system for a time period. The controller measures NOx values of the first SCR system and the second SCR system. The controller determines a difference between the third and first NOx values and a difference between the fourth and second NOx values. The controller generates an indication regarding whether the first NOx sensor is displaced.
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F02D 41/22 - Safety or indicating devices for abnormal conditions
21.
SYSTEMS INCLUDING A HYDROGEN INTERNAL COMBUSTION ENGINE AND AFTERTREATMENT SYSTEM
A system includes; a hydrogen internal combustion engine configured to produce exhaust; an aftertreatment system in exhaust receiving communication with the hydrogen internal combustion engine, the aftertreatment system comprising a catalyst member; a sensor coupled to the aftertreatment system; and a controller configured to: receive, from the sensor, data corresponding to a characteristic of the aftertreatment system, determine, based on the characteristic, a performance value corresponding to the catalyst member, compare the performance value to a threshold, cause the hydrogen internal combustion engine to operate in a first engine operating mode when the performance value does not exceed the threshold, and cause the hydrogen internal combustion engine to operate in a second engine operating mode when the performance value exceeds the threshold.
F01N 3/029 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
A mixer includes a frustoconical wall, a first guide first fin, a first guide second fin, a second guide first fin, a second guide second fin, a first exhaust gas inlet opening, and a second exhaust gas inlet opening. The first guide first fin extends outwardly from the frustoconical wall. The first guide second fin extends outwardly from the frustoconical wall. The second guide first fin extends inwardly from the frustoconical wall. The second guide second fin extends inwardly from the frustoconical wall. The first exhaust gas inlet opening is disposed between the first guide first fin and the second guide first fin. The second exhaust gas inlet opening is disposed between the first guide second fin and the second guide second fin.
A system, method, and apparatus for managing mass flow split in a multi-leg aftertreatment system are provided. A system can include an aftertreatment system comprising a first leg and a second leg and a controller. The controller estimates a first mass flow rate in the first leg and a second mass flow rate in the second leg. The controller computes an estimated total mass flow rate based on the estimated first and second mass flow rates. In response to determining that the estimated total mass flow rate is greater than an engine exhaust mass flow rate, the controller computes a correction factor. The controller estimates a corrected first and second mass flow rates in the first and second legs using the correction factor. The controller adjusts at least one of a reductant dosing, hydrocarbon dosing, or soot load estimation based on the corrected first and second mass flow rates.
A reductant delivery system designed for quickly thawing reductant includes a reductant pump. The reductant pump includes a filter housing, a pump, a filter cartridge, a cover, and a startup heater. The filter housing includes a filter head, a pump chamber, and a transfer channel. The cover is coupled to the filter head to define a filter head cavity. The pump provides reductant from the pump chamber to the transfer channel. The filter cartridge includes a filter cartridge cavity within the filter head cavity. The startup heater is positioned within the filter cartridge cavity. The reductant delivery system further includes a reductant delivery system controller and a main tank that stores reductant and includes a lift pump and a temperature sensor. The temperature sensor is communicatively coupled to the reductant delivery system controller. The reductant delivery system controller receives a signal from the temperature sensor.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
There is disclosed a method of operating an exhaust system for an internal combustion engine. The exhaust system comprises: a turbine, a dosing module, which is configured to deliver an aftertreatment fluid to the exhaust gas at a position downstream of the turbine wheel, and at least one of a variable geometry mechanism configured to control the flow of exhaust gas delivered to the turbine wheel and a bypass control valve configured to bypass a portion of the exhaust gas. The method comprises: determining a current property of the exhaust gas at a position downstream of the turbine wheel; determining a difference between the current property of the exhaust gas at the position downstream of the turbine wheel and a reference property of the exhaust gas at the position downstream of the turbine wheel; andin response to the difference, adjusting the at least one of the variable geometry mechanism and the bypass control valve.
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F02B 37/18 - Control of the pumps by bypassing exhaust
F02D 41/02 - Circuit arrangements for generating control signals
26.
MOUNTING BRACKET LIFT EYE FOR AN EXHAUST AFTERTREATMENT ASSEMBLY
An exhaust aftertreatment assembly includes a catalyst housing and a shell. The catalyst housing is configured to contain at least one catalyst therein. The shell is coupled to the catalyst housing. The shell includes an end cap fixed to the catalyst housing and a mounting bracket monolithically formed with the end cap. The mounting bracket extends radially away from the end cap. The mounting bracket includes a mounting portion and a lift portion. The mounting portion defines a first mounting opening that is structured to receive a first fastener. The lift portion defines a lift opening that is structured to receive a portion of a lifting arm.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
27.
EXHAUST AFTERTREATMENT SYSTEM INCLUDING MIXER WITH INJECTOR CONE
An exhaust aftertreatment system includes an introduction gas conduit, a dosing module, and a mixer. The introduction conduit is centered on a conduit axis. The dosing module is coupled to the introduction conduit and includes an injector. The injector is configured to provide a hydrocarbon fluid into the introduction conduit and is defined by an injection axis. The mixer includes a mixer body, a first aperture, an injector plate, and an injector cone. The mixer body is disposed within the introduction conduit and is configured to receive exhaust and the hydrocarbon fluid. The first aperture extends through the mixer body and is configured to facilitate flow of the exhaust through the mixer body. The injector plate is coupled to the mixer body along the first aperture. A portion of the injector plate is angled at a first opening angle away from the mixer body. The injector cone is positioned on the injector plate. The injector cone includes an injection aperture configured to facilitate flow of the hydrocarbon fluid through the injector cone and the injector plate.
B01F 25/313 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
An electrical connector includes: a male connector comprising a wire connection portion configured to be connected to a wire, and a pin connection portion configured to contact a conductor pin in an electrically conductive manner; a collar comprising a collar cylindrical body portion and a collar outer flange having a first surface and a second surface; a nut comprising a nut cylindrical body portion and a nut inner flange having a first surface that faces the second surface of the collar outer flange; a first seal that surrounds the collar cylindrical body portion and is positioned between the second surface of the collar outer flange and the first surface of the nut inner flange; and a second seal that surrounds the pin connection portion of the male connector and is positioned between an end surface of the nut cylindrical body portion and a first surface of the wire connection portion.
H01R 13/04 - Pins or blades for co-operation with sockets
H01R 24/28 - Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
F01N 3/22 - Control of additional air supply only, e.g. using by-passes or variable air pump drives
H01R 24/38 - Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
H01R 24/58 - Contacts spaced along longitudinal axis of engagement
A mixer for an exhaust aftertreatment system includes a mixer body positioned such that an injection axis of an injector of a dosing module extends into the mixer body. The mixer body receives exhaust and treatment fluid. The mixer further includes a plurality of apertures extending through the mixer body. Each of the apertures facilitate flow of the exhaust and the treatment fluid through the mixer body. The mixer further includes a plurality of blades. Each of the blades are coupled to the mixer body along a portion of one of the apertures. Each of the blades extend radially outward from the mixer body. The mixer further includes a first end. The first end includes a plurality of tabs and a plurality of edge slots. Each of the edge slots is positioned between two of the tabs.
A vehicle system includes a turbocharger having a turbine that receives exhaust from an engine-turbine exhaust conduit, a shaft coupled to the turbine, and a motor coupled to the shaft. The vehicle system further includes a controller that causes the motor to rotate the shaft. The vehicle system further includes an injection housing directly coupled to the turbine or to a turbine-housing exhaust conduit that is directly coupled to the turbine. The injection housing receives the exhaust from the turbine or from the turbine-housing exhaust conduit. The vehicle system further includes a dosing module coupled to the injection housing. The dosing module includes an injector configured to inject treatment fluid into the injection housing.
F02B 37/18 - Control of the pumps by bypassing exhaust
B01F 23/213 - Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
B01F 25/314 - Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
31.
SYSTEMS AND METHODS FOR DETERMINING AN EFFICIENCY VALUE ASSOCIATED WITH A CATALYST MEMBER
A system comprising an aftertreatment system comprising: a catalyst member, and a first exhaust conduit upstream of the catalyst member; a first temperature sensor operatively coupled to the catalyst member; a flow sensor coupled to the first exhaust conduit; and a controller. The controller determines a temperature of the catalyst member, a flow rate of exhaust within the first exhaust conduit, and a space velocity of the exhaust within the catalyst member. The controller determines a first degradation value indicative of a degradation of the catalyst member. The controller determines a first difference between the first degradation value and a first degradation reference value and a second difference between the first degradation value and a second degradation reference value. After determining that the first difference is less than the second difference, the controller selects a first calibration metric. The controller determines a first efficiency value associated with the catalyst member.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
At least one server comprising at least one processor coupled to at least one memory storing instructions. The server can receive a first signal from a first monitored system comprising an internal combustion engine and a first sensor, the first signal associated with a first occurrence of an internal combustion engine event, a second occurrence of the internal combustion engine event, and first measurement data of the first sensor. The server can determine a first measurement from the first measurement data. The server can determine a second measurement from the first measurement data. The server can determine a measurement deviation between the first measurement and the second measurement. The server can compare the measurement deviation to a stored measurement threshold. The server can determine a first exhibited useful life of the first sensor based on the measurement deviation and at least one of the first measurement or the second measurement.
A doser mount includes an annular body portion, a plurality of legs, and a plurality of projections. The annular body portion defines a central cavity. The plurality of legs protrude from a lower surface of the annular body portion and are configured to be coupled to an outer surface of an exhaust conduit. The plurality of projections extend from an upper surface of the annular body at a plurality of circumferential positions of the upper surface of the annular body.
An exhaust conduit assembly includes an exhaust conduit body, an injection aperture, and a doser mount portion. The exhaust conduit body defines an exhaust flow path. The injection aperture extends through the exhaust conduit body. The doser mount portion includes an inlet port, a channel, and an outlet port. The inlet port is configured to receive a coolant. The channel is configured to receive the coolant from the inlet port. At least a portion of the channel extends around at least a portion of the injection aperture. The outlet port is configured to receive the coolant from the channel.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
The exhaust of internal combustion engines, such as diesel engines, includes nitrogen oxide (NOx) compounds. It is desirable to reduce NOx emissions to comply with environmental regulations, for example. To reduce NOx emissions, a reductant may be dosed into the exhaust by a closer assembly within an aftertreatment system. The reductant facilitates conversion of a portion of the exhaust into non-NOx emissions, such as nitrogen (N2), carbon dioxide (CO2), and water (H20), thereby reducing NOx emissions. These aftertreatment systems may include a pressure sensor and a temperature sensor that obtain readings from reductant that is'dosed into the exhaust. A doser assembly includes a doser housing and a doser located at least partially within the doser housing. The doser assembly also includes a sensor assembly that includes a pressure sensor assembly having a pressure sensor and a temperature sensor assembly having a temperature sensor.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
36.
VALVE ASSEMBLY FOR INTERNAL COMBUSTION ENGINE SYSTEM WITH TURBOMACHINERY
An internal combustion engine system includes a turbomachine, an exhaust conduit, a first dosing module, and a valve assembly. The exhaust conduit is coupled to the turbomachine and is configured to receive exhaust from the turbomachine. The exhaust conduit has a conduit internal diameter The first dosing module is positioned along the exhaust conduit and is configured to selectively dose reductant into the exhaust within the exhaust conduit. The valve assembly is selectively actuatable between at least (i) a first position that allows the exhaust to flow at a first flow rate, and (ii) a second position that allows the exhaust to flow at a second flow rate. A first valve assembly distance between the valve assembly and the first dosing module is less than or equal to 3 times the conduit internal diameter.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
B01J 19/18 - Stationary reactors having moving elements inside
B01J 19/26 - Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
There is a provided an exhaust gas conduit for an exhaust system of an internal combustion engine. The exhaust gas conduit includes a main passage for a main flow of exhaust gases passing through the exhaust gas conduit, a chamber configured to receive an aliquot of exhaust gases separated from the main flow of exhaust gases. A mounting point is provided in the chamber for mounting an exhaust gas sensor. The chamber being configured to modify the velocity and/or the pressure of exhaust gases passing therethrough.
There is provided a turbine for a turbocharger, comprising: a turbine inlet passage configured to receive exhaust gas from an internal combustion engine, the exhaust gas received by the turbine inlet passage defining a turbine bulk flow; a turbine wheel chamber configured to receive the turbine bulk flow from the turbine inlet passage, the turbine wheel chamber configured to contain a turbine wheel supported for rotation about a turbine axis; a turbine outlet passage configured to receive the turbine bulk flow from the turbine wheel chamber; a dosing module configured to deliver a spray of aftertreatment fluid into a spray region of the turbine outlet passage through which the turbine bulk flow passes; and an auxiliary passage configured to receive a portion of the turbine bulk flow, the portion of the turbine bulk flow received by the auxiliary passage defining an auxiliary flow; wherein the auxiliary passage is configured to direct the auxiliary flow into the spray region of the turbine outlet passage.
There is provided a turbine for a turbocharger, the turbine comprising: a turbine inlet passage (510) configured to receive exhaust gas from an internal combustion engine, the exhaust gas received by the turbine inlet passage defining a turbine bulk flow (511); a turbine wheel chamber (512) configured to receive the turbine bulk flow from the turbine inlet passage, the turbine wheel chamber configured to contain a turbine wheel (504) supported for rotation about a turbine axis; a turbine outlet passage (514) configured to receive the turbine bulk flow from the turbine wheel chamber; and an auxiliary passage (522) configured to receive a portion of the turbine bulk flow from a first position of the turbine upstream of the turbine outlet passage, the portion of the turbine bulk flow received by the auxiliary passage defining an auxiliary flow, the auxiliary passage further configured to deliver the auxiliary flow to the turbine bulk flow at a second position of the turbine downstream of the turbine wheel chamber; wherein the turbine is configured such that the auxiliary flow is always permitted to flow from the first position of the turbine to the second position of the turbine.
F02B 37/18 - Control of the pumps by bypassing exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F02C 6/12 - Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
There is disclosed a turbine dosing system for a turbocharger. The turbine dosing system comprises a turbine inlet passage (112), a turbine wheel chamber and a turbine outlet passage (116). The turbine inlet passage is configured to receive exhaust gas from an internal combustion engine. The turbine wheel chamber is configured to receive exhaust gas from the turbine inlet passage. The turbine wheel chamber contains a turbine wheel supported for rotation about a turbine wheel axis. The turbine wheel comprises an exducer defining an exducer diameter. The turbine outlet passage is downstream of the turbine wheel chamber and is configured to receive exhaust gas from the turbine wheel chamber. The turbine outlet passage is at least partly defined by a structure which comprises a dosing module mount (122) configured to receive a dosing module (32). The turbine outlet passage defines a flow axis which extends from a downstream end of the turbine wheel. The dosing module mount is located within around 10 exducer diameters, along the flow axis, downstream of the downstream end of the turbine wheel.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
41.
TURBINE DOSING SYSTEM FOR DOSING INTO REGIONS OF DESIRABLE FLOW PROPERTIES
There is disclosed a turbine dosing system for a turbocharger. The turbine dosing system comprises a turbine inlet passage, a turbine wheel chamber, a turbine outelte passage and a plurality of dosing modules. The turbine inlet passage is configured to receive exhaust gas from an internal combustion engine. The turbine wheel chamber configured to receive exhaust gas from the turbine inlet passage. The turbine wheel chamber contains a turbine wheel supported for rotation about a turbine wheel axis. The turbine wheel comprises an exducer which defines an exducer diameter. The turbine outlet passage is downstream of the turbine wheel chamber and is configured to receive exhaust gas from the turbine wheel chamber. The turbine outlet passage defines a flow axis which extends from a downstream end of the turbine wheel. The plurality of dosing modules are configured to inject aftertreatment fluid into exhaust gas in the turbine outlet passage.
M&C PM359732GB 386 69050154-1 ABSTRACT: There is provided a turbine for a turbocharger, comprising: a turbine inlet passage configured to receive exhaust gas from an internal combustion engine, the exhaust gas received by the turbine inlet passage defining a turbine bulk flow; a turbine wheel chamber configured to receive the turbine bulk flow from the turbine inlet passage, the 5 turbine wheel chamber configured to contain a turbine wheel supported for rotation; a turbine outlet passage configured to receive the turbine bulk flow from the turbine wheel chamber, the turbine outlet passage being at least partially defined by a turbine outlet passage surface and defining a centreline; an auxiliary passage configured to receive a portion of the turbine bulk flow, the portion of the turbine bulk flow received by 10 the auxiliary passage defining an auxiliary flow; and a dosing module configured to deliver a spray of aftertreatment fluid into the turbine outlet passage; wherein the auxiliary passage is configured to direct the auxiliary flow along the turbine outlet passage surface in an auxiliary flow layer. 15 [Figure 33]
A controller for use in an aftertreatment system that includes a doser configured to dose reductant into a decomposition chamber and a pump configured to supply the reductant to the doser is configured to be operatively coupled to the doser and the pump and programmed to cause the pump and the doser to operate in an idle mode in which the pump supplies the reductant from a reductant tank to the doser at steady state, the doser does not dose the reductant, and the reductant supplied to the doser by the pump is recirculated to the reductant tank. The controller is also programmed to, while the pump and the doser operate in the idle mode, determine a first speed of the pump required to achieve a predetermined target pressure. The controller is also programmed to cause the pump and the doser to operate in a dosing mode.
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 9/00 - Electrical control of exhaust gas treating apparatus
An aftertreatment system includes an upstream particulate filter, a decomposition chamber, a decomposition chamber dosing module, a first downstream catalyst member, and a downstream particulate filter. The decomposition chamber is positioned downstream of the upstream particulate filter. The decomposition chamber dosing module is coupled to the decomposition chamber and is configured to provide downstream treatment fluid into the decomposition chamber. The first downstream catalyst member is positioned downstream of the decomposition chamber and comprises a first downstream catalyst substrate configured to facilitate treatment of exhaust gas. The downstream particulate filter positioned downstream of the first downstream catalyst member.
F01N 3/30 - Arrangements for supply of additional air
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 29/72 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups containing iron group metals, noble metals or copper
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 9/00 - Electrical control of exhaust gas treating apparatus
45.
REDUCTANT TANK ASSEMBLY WITH MULTIPLE CONNECTION TANK HEADER
An after treatment system includes a first dosing module, a second dosing module, and a reductant tank assembly. The reductant tank assembly includes a reductant tank, a header coupled to the reductant tank, and a first splitting device that splits a first flow from the header into a first inlet flow and a second inlet flow. A first inlet line and a second inlet line direct the first inlet flow and the second inlet flow to the first dosing module and the second dosing module. A first outlet line and a second outlet line direct a first outlet flow and a second outlet flow from the first dosing module and the second dosing module to a second splitting device. The second splitting device merges the first outlet flow and the second outlet flow into a second flow and provides the second flow to the header.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 35/027 - Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
An exhaust gas aftertreatment system includes an outlet housing body, an outlet housing fitting, an outlet sampling system, and an outlet sensor. The outlet sampling system includes a sampling bowl and a sampling ring. The sampling bowl is coupled to the outlet housing body and extends away from the outlet housing body so as to define a sampling bowl cavity between the sampling bowl and the outlet housing body. The sampling ring is coupled to the sampling bowl and separated from the outlet housing body by the sampling bowl. The sampling ring is coupled to the outlet housing fitting and defines a sampling ring cavity. The sampling ring includes a plurality of sampling ring inlet apertures and a connector. The sampling ring inlet apertures are each configured to receive exhaust gas from within the outlet housing body and provide the exhaust gas to the sampling ring cavity.
An aftertreatment system includes an inlet conduit assembly, an aftertreatment component cartridge, and an outlet conduit assembly. The inlet conduit assembly receives an exhaust gas and includes an inlet coupling flange portion. The aftertreatment component cartridge is coupled to the inlet conduit assembly and receives the exhaust gas from the inlet conduit assembly. The aftertreatment component cartridge also includes an adaptor. The outlet conduit assembly is coupled to the aftertreatment component cartridge and receives the exhaust gas from the aftertreatment component cartridge. The outlet conduit assembly includes an outlet coupling flange portion. The inlet coupling flange portion, adaptor, and outlet coupling flange portion cooperate to suspend the aftertreatment component cartridge within the aftertreatment system.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 5/00 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
An exhaust gas aftertreatment system includes an introduction gas conduit, a dosing module, a mixer, and an outlet flange. The introduction conduit is centered on a conduit center axis. The dosing module is coupled to the introduction conduit and includes an injector. The injector is configured to provide a treatment fluid into the introduction conduit and is defined by an injection axis. The mixer is disposed within the introduction conduit and includes a mixer body. The mixer body is configured to receive exhaust gas and the treatment fluid. The outlet flange includes an outlet flange body, an outlet flange opening, and a plurality of outlet flange perforations. The outlet flange body is centered on an outlet flange center axis. The outlet flange body includes an outlet flange body inner portion and an outlet flange body outer portion. The outlet flange body inner portion is coupled to the mixer body.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
49.
ENGINE HEALTH AND OIL CONSUMPTION RATE DIAGNOSTIC USING BACK PRESSURE
An aftertreatment system includes a particulate filter configured to receive exhaust gas from an engine and a controller that measures an actual pressure drop across the particulate filter, determines an expected total ash accumulation rate in the particulate filter based on a current duty cycle of the engine, determines an expected pressure drop across the particulate filter based on the expected total ash accumulation rate, compares the expected pressure drop with the actual pressure drop, and determines whether an oil consumption rate in the engine is abnormal based on the comparison.
F01N 3/023 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
An exhaust gas aftertreatment system includes a first decomposition chamber, a first dosing module, a first conversion catalyst member, a second decomposition chamber, a second dosing module, a second conversion catalyst member, and a third conversion catalyst member. The first decomposition chamber is configured to receive an exhaust gas. The first dosing module is coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber. The first conversion catalyst member is configured to receive a mixture of the first treatment fluid and the exhaust gas, from the first decomposition chamber. The second decomposition chamber is configured to receive the exhaust gas from the first conversion catalyst member. The second dosing module is coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/22 - Control of additional air supply only, e.g. using by-passes or variable air pump drives
F01N 3/30 - Arrangements for supply of additional air
An exhaust gas aftertreatment system includes an exhaust gas conduit a mixer, and a plurality of flow disrupters. The exhaust gas conduit is centered on a conduit center axis and includes an inner surface. The mixer includes a mixer body and an upstream vane plate. The upstream vane plate has a plurality of upstream vanes. At least one of the upstream vanes is coupled to the mixer body. The flow disrupters are disposed downstream of the mixer and circumferentially around the conduit center axis. Each of the flow disrupters is coupled to the exhaust gas conduit or integrally formed with the exhaust gas conduit. Each of the flow disrupters extends inwardly from the inner surface.
An exhaust gas aftertreatment system includes an introduction housing, a transfer housing, a distributing housing, and a first aftertreatment component. The introduction housing is configured to receive an exhaust gas and a treatment fluid. The transfer housing is coupled to the introduction housing and configured to receive the exhaust gas and the treatment fluid from the introduction housing. The distributing housing is coupled to the transfer housing and configured to receive the exhaust gas and the treatment fluid from the transfer housing. The distributing housing includes a distributing housing first panel and a distributing housing first panel opening. The distributing housing first panel opening extends through the distributing housing first panel. The first aftertreatment component is configured to receive at least a portion of the exhaust gas and the treatment fluid from the distributing housing.
F01N 3/029 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
An exhaust gas aftertreatment system includes a housing assembly, a first catalyst member, and a second catalyst member. The housing assembly includes an upstream housing, a decomposition housing, a distributing housing, and a catalyst member housing. The upstream housing is centered on an upstream housing axis. The decomposition housing is coupled to the upstream housing and configured to receive exhaust gas from the upstream housing. The distributing housing is coupled to the decomposition housing and configured to receive the exhaust gas from the decomposition housing. The catalyst member housing is coupled to the distributing housing and configured to receive the exhaust gas from the distributing housing. The catalyst member housing is centered on a catalyst member housing axis that is parallel to the upstream housing axis. The first catalyst member extends within the catalyst member housing.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F23R 3/16 - Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
An aftertreatment system comprises a housing defining a first and a second internal volume fluidly isolated from each other. A first aftertreatment leg extends from the first to the second internal volume and includes an oxidation catalyst and a filter. The oxidation catalyst receives exhaust gas from an inlet conduit and the filter emits exhaust gas into the second internal volume. A second aftertreatment leg extends from the second to the first internal volume and includes at least one SCR catalyst disposed offset from the first aftertreatment leg. A decomposition tube is disposed offset from the SCR catalyst and the oxidation catalyst. The decomposition tube is configured to receive the exhaust gas from the second internal volume and communicate it to the inlet of the at least one SCR catalyst. A reductant injection inlet is defined proximate to the inlet of the decomposition tube for reductant insertion.
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 3/033 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
A controller for controlling operation of an aftertreatment system that is configured to treat constituents of an exhaust gas produced by an engine, the aftertreatment system including a selective catalytic reduction (SCR) catalyst, the controller configured to: generate a short-term cumulative degradation estimate of the SCR catalyst corresponding to reversible degradation of the SCR catalyst due to sulfur and/or hydrocarbons based on a SCR catalyst temperature parameter; generate a long-term cumulative degradation estimate of the SCR catalyst corresponding to thermal aging of the SCR catalyst based on the SCR catalyst temperature parameter; generate a combined degradation estimate of the SCR catalyst based on the short-term cumulative degradation estimate and the long-term cumulative degradation estimate; and adjust an amount of reductant and/or an amount of hydrocarbons inserted into the aftertreatment system based on the combined degradation estimate of the SCR catalyst.
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 5/04 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
An aftertreatment system comprises: a housing, a SCR system disposed in the housing. A mixer is disposed upstream of the SCR system and includes: a hub, a tubular member disposed circumferentially around the hub and defining a reductant entry port, and plurality of vanes extending from the hub to the tubular member such that openings are defined between adjacent vanes. The plurality of vanes swirl the exhaust gas in a circumferential direction. A reductant injector is disposed on the housing upstream of the SCR system along a transverse axis and configured to insert a reductant into the exhaust gas flowing through the housing through the reductant entry port. The reductant is inserted at a non-zero angle with respect to the transverse axis opposite the circumferential direction to achieve virtual interception. A mixer central axis is radially offset with respect to a housing central axis of the housing.
An insulated exhaust gas conduit system includes a first exhaust gas conduit, a second exhaust gas conduit, a first insulation sleeve, and a second insulation sleeve. The first exhaust gas conduit has a first exhaust gas conduit end portion. The second exhaust gas conduit has a second exhaust gas conduit end portion that is configured to engage with the first exhaust gas conduit end portion. The first insulation sleeve comprising includes a first insulation sleeve and a first insulation sleeve heat shield. The first insulation sleeve insulation layer is disposed around the first exhaust gas conduit. The first insulation sleeve heat shield is disposed around the first insulation sleeve insulation layer. The first insulation sleeve extends beyond the first exhaust gas conduit end portion. The second insulation sleeve includes a second insulation sleeve insulation layer and a second insulation sleeve heat shield.
F16L 3/02 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
F16L 3/08 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
A controller for controlling regeneration of a selective catalytic reduction (SCR) catalyst of an aftertreatment system is configured to cause increase in a SCR catalyst temperature of the SCR catalyst to a first regeneration temperature, the first regeneration temperature being lower than a high regeneration temperature that is equal to or greater than 500 degrees Celsius. The controller is configured to determine an amount of ammonia slip downstream of the SCR catalyst; and cause an increase in the SCR catalyst temperature to a second regeneration temperature greater than the first regeneration temperature but lower than the high regeneration temperature based on the determined amount of ammonia slip.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/64 - Heavy metals or compounds thereof, e.g. mercury
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/023 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
A reductant delivery system includes an inlet body, an outlet body, and an outer transfer tube. The inlet body includes an inlet body coupler, an inlet body outer transfer shell, and an inlet body inner shell. The inlet body coupler surrounds an inlet body inlet that is configured to receive exhaust gas. The inlet body outer transfer shell is coupled to the inlet body coupler. The inlet body outer transfer shell includes an inlet body outer transfer shell inner surface and an inlet body outer transfer shell outlet. The inlet body outer transfer shell outlet extends through the inlet body outer transfer shell inner surface. The inlet body inner shell includes an inlet body inner shell first flange, an inlet body inner shell second flange, and an inlet body inner shell wall. The inlet body inner shell first flange is coupled to the inlet body outer transfer shell inner surface.
A decomposition chamber for an exhaust gas aftertreatment system includes an inlet tube, a selective catalytic reduction (SCR) catalyst member, a mixing collector wall, a distribution cap, and a dividing tube. The inlet tube is configured to receive exhaust gas. The mixing collector wall includes a mixing assembly flow aperture. The distribution cap is coupled to the inlet tube and configured to receive the exhaust gas from the inlet tube. The dividing tube is coupled to the mixing collector wall. The dividing tube separates the distribution cap from the mixing assembly flow aperture. The dividing tube includes a first dividing tube inlet aperture that is configured to receive the exhaust gas from the distribution cap. The dividing tube outlet aperture is configured to provide the exhaust gas to the mixing assembly flow aperture.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
61.
SYSTEMS AND METHODS FOR VIRTUALLY DETERMINING FUEL SULFUR CONCENTRATION
A control module for an aftertreatment system that includes a selective catalytic reduction (SCR) catalyst and an oxidation catalyst, comprises a controller configured to be operatively coupled to the aftertreatment system. The controller is configured to determine an actual SCR catalytic conversion efficiency of the SCR catalyst. The controller determines an estimated SCR catalytic conversion efficiency based on a test sulfur concentration selected by the controller. In response to the estimated SCR catalytic conversion efficiency being within a predefined range, the controller sets the test sulfur concentration as a determined sulfur concentration in a fuel provided to the engine. The controller generates a sulfur concentration signal indicating the determined sulfur.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
An outlet assembly for an aftertreatment system comprises an outlet conduit configured to receive an exhaust gas from the aftertreatment system. The outlet conduit defines a first aperture through a sidewall thereof. An outlet passage is disposed within the outlet conduit. The outlet passage comprises a first end facing an upstream side of the outlet conduit and a second end located downstream from the first end. The second end is fluidly coupled to the first aperture. A hole is defined through an outlet passage sidewall at a radial location that is proximate to the sidewall of the outlet conduit. The hole is configured to allow a sensor to be inserted therethrough into a flow path defined by the outlet passage. The outlet passage is configured to receive a portion of the exhaust gas from the outlet conduit such that the sensor is exposed to the portion of the exhaust gas.
A hybrid vehicle comprises an engine, an energy storage device, and an aftertreatment system comprising a SCR catalyst configured to treat constituents of an exhaust gas. A controller is operatively coupled to the engine, the energy storage device, and the after treatment system, and configured to estimate an exhaust gas temperature and flow rate of the exhaust gas based on a set of engine operating parameters. The controller determines an exhaust gas cooling rate based on the exhaust gas temperature, flow rate, and a SCR catalyst temperature, and an ambient cooling rate based on an ambient temperature, a vehicle speed and the catalyst temperature. The controller determines a SCR catalyst temperature change rate based on the exhaust gas and ambient cooling rates, and adjusts a load distribution between the engine and the energy storage device based on the SCR catalyst temperature change rate.
A system and method include determining, by a controller associated with an aftertreatment system, satisfaction of an enabling condition and in response to the satisfaction of the enabling condition, pausing, by the controller, hydrocarbon dosing in a regeneration cycle of the aftertreatment system. The system and method also include upon pausing of the hydrocarbon dosing, monitoring, by the controller, an oxidation catalyst of the aftertreatment system for a light-off shift condition.
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/023 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
65.
AFTERTREATMENT SYSTEM INCLUDING PREHEATING OXIDATION CATALYST
An aftertreatment system for treating an exhaust gas comprises an exhaust conduit, a preheating oxidation catalyst, a primary oxidation catalyst disposed downstream of the preheating oxidation catalyst, and a selective catalytic reduction system disposed in the exhaust conduit downstream of the primary oxidation catalyst. A controller is configured to determine a temperature of an exhaust gas at an inlet of the selective catalytic reduction system. In response to the temperature being below a threshold temperature, the controller generates a hydrocarbon insertion signal configured to cause hydrocarbons to be inserted into or upstream of the preheating oxidation catalyst so as to increase a temperature of the exhaust gas to above the threshold temperature.
F01N 3/36 - Arrangements for supply of additional fuel
B01D 53/74 - General processes for purification of waste gasesApparatus or devices specially adapted therefor
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
F01N 3/30 - Arrangements for supply of additional air
An ammonia generating apparatus comprises a housing comprising a first end wall on which a reductant injector configured to insert a reductant into the housing is mountable. A heating coil assembly is disposed within the housing. A first end of the heating coil assembly is located proximate to a location of the first end wall where a reductant injector tip of the reductant injector is located when the reductant injector is mounted on the first end wall. The heating coil assembly is configured to generate heat sufficient to thermolyze the reductant to generate ammonia and reaction byproducts, in response to an electric current being passed therethrough. A hydrolysis catalyst can be disposed downstream of the heating coil assembly for catalyzing hydrolysis of the reaction byproducts into ammonia.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/34 - Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
67.
SYSTEMS AND METHODS FOR ADAPTIVE CONTROL OF AFTERTREATMENT SYSTEMS
An aftertreatment system for use in a vehicle that includes an engine comprises: a selective catalytic reduction system configured to decompose constituents of an exhaust gas generated by the engine, a reductant insertion assembly configured to insert a reductant into the exhaust gas, and a controller. The controller is configured to: generate a route for the vehicle to travel from a present location of the vehicle to a final destination of the vehicle, determine a plurality of route parameters of the generated route, determine an estimated exhaust gas parameter of the exhaust gas that will be generated by the engine as the vehicle travels on the generated route based on the plurality of route parameters, determine a location on the route at which to execute an aftertreatment event based on the determined estimated exhaust gas parameter, and execute the aftertreatment event once the vehicle reaches the location.
A method of recovering catalyst performance includes providing a vanadium selective catalytic reduction (VSCR) catalyst. The method includes exposing the VSCR catalyst to a first humidity level in a range of 50%-100% relative humidity, at a first temperature in a range of 20°C-100°C, for a first period of time of at least two hours. The method includes thermally treating the VSCR catalyst at a second temperature in a range of 300°C-600°C for a second period of time of at least than one hour.
B01J 38/36 - Treating with free oxygen-containing gas in gaseous suspension, e.g. fluidised bed and with substantially complete oxidation of carbon monoxide to carbon dioxide within regeneration zone
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
69.
SYSTEMS AND METHODS FOR DECREASING TIME TO REACH LIGHT-OFF TEMPERATURE
A vehicle system includes a diesel oxidation catalyst. The vehicle system includes a hydrocarbon-selective catalytic reduction unit located downstream of the diesel oxidation catalyst. The hydrocarbon-selective catalytic reduction unit is configured to receive exhaust gas from the diesel oxidation catalyst. The vehicle system includes a turbocharger located downstream of the hydrocarbon-selective catalytic reduction unit. The turbocharger is configured to receive exhaust gas from the hydrocarbon-selective catalytic reduction unit.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/36 - Arrangements for supply of additional fuel
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
70.
SYSTEMS AND METHODS FOR PROVIDING UNIFORM EXHAUST GAS FLOW TO AN AFTERTREATMENT COMPONENT
An inlet assembly for a housing containing an aftertreatment component of an aftertreatment system comprises an inlet conduit configured to be disposed substantially perpendicular to a longitudinal axis of the housing. A flow redirection conduit is disposed downstream of the inlet conduit and is coupled to the end of the housing. A plurality of protrusions project from a sidewall of the flow redirection conduit towards an inlet face of the aftertreatment component and are configured to provide a uniform exhaust gas flow to the inlet face. Alternatively, a flow distribution plate having a plurality of slots defined substantially perpendicular to the longitudinal axis is disposed in the flow redirection conduit, the plate being inclined with respect to the longitudinal axis. The slots are configured to provide a uniform exhaust gas flow to the inlet face.
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
A vane swirl mixer for exhaust aftertreatment comprises a vane swirl mixer inlet configured to receive exhaust gas and a vane swirl mixer outlet configured to provide the exhaust gas to a catalyst. It further comprises a first flow device configured to receive the exhaust gas from the vane swirl mixer inlet and to receive a reductant such that the reductant is mixed with the exhaust gas within the first flow device. The first flow device comprises a Venturi body having a Venturi center axis and being defined by a body inlet and a body outlet. The first flow device further comprises a plurality of upstream vanes positioned within the Venturi body and proximate the body inlet. Each of the upstream vanes is coupled to an upstream vane hub. A plurality of upstream vane apertures is interspaced between the plurality of upstream vanes. The plurality of upstream vane apertures is configured to receive the exhaust gas and to cooperate with the plurality of upstream vanes to provide the exhaust gas with a swirl flow that facilitates mixing of the reductant and the exhaust gas. Additionally, the first flow device comprises a plurality of downstream vanes positioned within the Venturi body and proximate the body outlet. Each of the downstream vanes is coupled to a downstream vane hub. A plurality of downstream vane apertures is interspaced between the plurality of downstream vanes. The plurality of downstream vane apertures is configured to receive the exhaust gas and to cooperate with the plurality of downstream vanes to facilitate further mixing of the reductant and the exhaust gas. At least one of the upstream vane hub and the downstream vane hub is radially offset from the Venturi center axis, thereby causing individual ones of the plurality of vanes coupled to the radially offset vane hub to differ in their geometry.
A vehicle system (100) includes a conversion catalyst (116), a temperature sensor (156), an indication device (142), and an exhaust gas aftertreatment system controller (132). The conversion catalyst (116) is configured to receive exhaust gas. The temperature sensor (156) is configured to sense a conversion catalyst temperature of the conversion catalyst (116). The indication device (142) is operable between a static state and an impure fuel alarm state. The exhaust gas aftertreatment system controller (132) is configured to receive the conversion catalyst temperature from the temperature sensor (156). The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature lower threshold. The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature upper threshold.
A sampling assembly for an exhaust gas aftertreatment system includes a body layer, an outer bowl, a first sampler, and an inner bowl. The body layer defines a cylindrical passage. The outer bowl is coupled to the body layer. The first sampler extends circumferentially along the body layer to the outer bowl. The first sampler includes a first sampler channel and a first sampler aperture. The first sampler channel is configured to provide exhaust gas into the outer bowl. The first sampler aperture is configured to receive the exhaust gas from the cylindrical passage and provide the exhaust gas into the first sampler channel. The inner bowl is disposed at least partially within the outer bowl and configured to receive the exhaust gas from the outer bowl and provide the exhaust gas into the cylindrical passage.
An aftertreatment system includes a first exhaust gas path, a second exhaust gas path, and a selector valve configured to divert exhaust gas between the first exhaust gas path and the second exhaust gas path based on a temperature of the exhaust gas. The aftertreatment system also includes a controller programmed to control the selector valve such that the selector valve diverts at least a portion of the exhaust gas to the first exhaust gas path when the temperature of the exhaust gas is equal to or less than a predetermined temperature threshold and the selector valve diverts the exhaust gas to the second exhaust gas path when the temperature of the exhaust gas is greater than the predetermined temperature threshold. The first exhaust gas path includes a heater configured to heat the exhaust gas received in the first exhaust gas path.
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
F02D 9/04 - Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
F02D 13/02 - Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
F02M 31/07 - Temperature-responsive control, e.g. using thermostatically-controlled valves
F16K 1/18 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps
An aftertreatment system for reducing constituents of an exhaust gas having a sulfur content comprises an oxidation catalyst. A filter is disposed downstream of the oxidation catalyst. The aftertreatment system also includes a controller configured to: in response to determining that the filter is to be regenerated and an oxidation catalyst criteria is satisfied, to increase a temperature of the oxidation catalyst to increase to a first regeneration temperature that is greater than or equal to 400 and less than 550 degrees Celsius in response to determining that the filter is to be regenerated. The controller causes the oxidation catalyst to be maintained at the first regeneration temperature for a predetermined time period. The controller is configured to subsequently cause the temperature of the oxidation catalyst to increase to a second regeneration temperature equal to or greater than 550 degrees Celsius.
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
76.
SYSTEMS AND METHODS FOR DETERMINING AMOUNT OF REDUCTANT DEPOSITS IN AFTERTREATMENT SYSTEMS
xx xxxx x gases measured at the location downstream of the SCR unit, and an amount of reductant that has been inserted into the aftertreatment system. The controller adjusts an amount of reductant to be inserted into the aftertreatment system based on the estimated amount of reductant deposits formed in the aftertreatment system.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
77.
SYSTEMS AND METHODS FOR MOUNTING A DOSER TO A COMPONENT OF AN EXHAUST GAS AFTERTREATMENT SYSTEM
A doser mounting bracket for coupling a doser to an exhaust gas aftertreatment system component having a sidewall and an exhaust gas aftertreatment system component opening includes a lower surface, an engagement wall, a central structure, an upper surface, and an attachment structure. The lower surface is configured to be held in a position opposing the sidewall. The engagement wall extends from the lower surface. The central structure has an opening that extends therethrough and includes a centering structure that extends from the lower surface and is configured to be received within the exhaust gas aftertreatment system component opening. The attachment structure extends from the upper surface and is configured to be coupled to the doser. The engagement wall is configured to separate the lower surface from the sidewall when the engagement wall interfaces with the sidewall such that a pocket is formed between the engagement wall, the centering structure, and the lower surface.
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B60K 13/04 - Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
F02M 61/14 - Arrangements of injectors with respect to enginesMounting of injectors
78.
METHOD AND APPARATUS TO ENHANCE FRACTIONAL EFFICIENCY OF DIESEL AND GASOLINE PARTICULATE FILTERS
An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
F01N 3/029 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 3/023 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
79.
SYSTEMS AND METHODS FOR IMPLEMENTING CORRECTIONS TO A REDUCTANT DELIVERY SYSTEM IN AN EXHAUST AFTERTREATMENT SYSTEM OF AN INTERNAL COMBUSTION ENGINE
An exhaust aftertreatment system includes a catalyst, an exhaust conduit system, a first sensor, a second sensor, a reductant pump, a dosing module, and a reductant delivery system controller. The exhaust conduit system is coupled to the catalyst. The first sensor is coupled to the exhaust conduit system upstream of the catalyst and configured to obtain a current first measurement upstream of the catalyst. The second sensor is coupled to the exhaust conduit system downstream of the catalyst and configured to obtain a current second measurement downstream of the catalyst. The reductant pump is configured to draw reductant from a reductant source. The dosing module is fluidly coupled to the reductant pump and configured to selectively provide the reductant from the reductant pump into the exhaust conduit system upstream of the catalyst. The reductant delivery system controller is communicable with the first sensor, the second sensor, the reductant pump, and the dosing module.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
80.
EXHAUST AFTERTREATMENT SENSOR TABLE MOUNTING APPARATUS AND METHOD OF INSTALLING THE SAME
A sensor table mounting system includes an insulating blanket assembly and a senor table. The insulating blanket assembly is configured to surround an external housing surface of an exhaust aftertreatment component housing. The insulating blanket assembly includes an inner blanket surface, an outer blanket surface, and a first restraint. The outer blanket surface is opposite the inner blanket surface. The first restraint includes a first restraint first end that is fixed to the outer blanket surface. The sensor table includes a platform, a first standoff, a second standoff, a first footing, and a second footing. The first footing is offset from the platform by the first standoff and configured to be coupled to the first restraint. The second footing is offset from the platform by the second standoff and configured to be coupled to the first restraint.
B01D 53/00 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
B60K 13/00 - Arrangement in connection with combustion air intake or gas exhaust of propulsion units
A method includes: providing a SCR system comprising a SCR catalyst; heating the SCR system to a temperature greater than 500 degrees Celsius for a predetermined time so as to increase sulfur resistance of the SCR catalyst; and installing the SCR system in an aftertreatment system.
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
82.
AFTERTREATMENT SYSTEM WITH MULTIPLE DOSING MODULES
An aftertreatment system (100) includes a decomposition chamber (108), a reductant pump (120), a first dosing module (110), a second dosing module (112), and a controller (133). The first dosing module (110) is coupled to the decomposition chamber (108) and configured to receive reductant from the reductant pump (120). The second dosing module (112) is coupled to the decomposition chamber (108) and configured to receive reductant from the reductant pump (120) independent of the first dosing module (110). The controller (133) is communicatively coupled to the first dosing module (110) and the second dosing module (112). The controller (133) is configured to independently control a first volumetric flow rate of reductant provided from the first dosing module (110) into the decomposition chamber (108) and a second volumetric flow rate of reductant provided from the second dosing module (112) into the decomposition chamber (108).
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
83.
SYSTEMS AND METHODS FOR REDUCING REDUCTANT DEPOSIT FORMATION IN A DECOMPOSITION REACTOR OF AN EXHAUST GAS AFTERTREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
An exhaust gas aftertreatment system includes a decomposition reactor, an injector, and a processor. The decomposition reactor includes a body, an impingement structure, and a heater. Exhaust gas is flowable through the body. The body includes an inlet and an outlet. The inlet is configured to receive the exhaust gas at a first temperature. The outlet is configured to selectively expel the exhaust gas at a second temperature greater than the first temperature. The impingement structure is disposed within the body between the inlet and the outlet. The impingement structure extends into the body and is located such that the exhaust gas flowing through the body impinges on the impingement structure. The heater is coupled to the impingement structure and configured to selectively heat the impingement structure. The injector is configured to inject reductant into the body. The processor is programmed to control the heater.
F01N 1/08 - Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
84.
SYSTEMS AND METHODS FOR DRY CHEMICAL REDUCTANT INSERTION IN AFTER TREATMENT SYSTEMS
A reductant insertion system for an after treatment system configured to decompose constituents of an exhaust gas, includes: a dry reductant tank configured to contain a dry reductant; a reductant delivery line configured to operatively couple the dry reductant tank to the after treatment system for delivery of the dry reductant to the after treatment system; and a pressurized gas source configured to communicate the dry reductant to the after treatment system through the reductant delivery line using pressurized gas.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
85.
SYSTEMS AND METHODS FOR DYNAMIC CONTROL OF FILTRATION EFFICIENCY AND FUEL ECONOMY
An aftertreatment system comprises a SCR system, a first filter, and a second filter disposed downstream of the first filter and a bypass conduit providing a flow path bypassing the second filter. A valve is operatively coupled to the bypass conduit and is moveable between a closed position in which the exhaust gas flows through the second filter, and an open position in which at least a portion of the exhaust gas flows through the bypass conduit. A controller is operatively coupled to the valve configured to adjust the valve based on a first filtration efficiency of the first filter to cause the exhaust gas expelled into the environment from the aftertreatment to have a particulate matter count meeting particulate matter emission standards.
F01N 3/031 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 9/00 - Electrical control of exhaust gas treating apparatus
An aftertreatment system configured to reduce constituents of an exhaust gas produced by an engine comprises an aftertreatment component and an optical assembly. The optical assembly comprises an optical emitter configured to emit light onto a face of the aftertreatment component, and an optical detector configured to detect light reflected from the face of the aftertreatment component. A controller is configured to determine at least one of an amount of NOx gases or an amount of ammonia on the face of the aftertreatment component based on an optical parameter of the detected light that has reflected from the face of the aftertreatment component.
An aftertreatment system includes a multipoint injector configured to be operatively coupled to an exhaust tube of the aftertreatment system. The multipoint injector comprises an injector body having a circumferential wall. A plurality of orifices extend through the circumferential wall of the injector body. Each of the plurality of orifices is located at a different circumferential position of the circumferential wall and is configured to insert reductant into an exhaust gas flow path defined by the exhaust tube.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
An aftertreatment system comprises a SCR system, a reductant injector operatively coupled to the SCR system, and a reductant insertion assembly operatively coupled to the reductant injector. The reductant insertion assembly comprises a pump configured to pump the reductant through the reductant injector. A controller is operatively coupled to the reductant insertion assembly and configured to receive predetermined calibration values of the pump corresponding to delivery of a reductant by the pump through a calibration injector. The controller determines a desired flow rate value of the reductant into the SCR system. The controller determines an insertion time of the reductant injector for delivering the reductant through the reductant injector based on the desired flow rate value, a pump operating parameter value of the pump and the predetermined calibration values, and activates the reductant injector for the insertion time.
A system comprises a tank header configured to couple to a reductant tank and a heating mechanism positioned proximate to the tank header. The heating mechanism is configured to heat at least a portion of the tank header. The system may further comprise a conduit configured to pass reductant from the reductant tank and a junction configured to receive reductant from the reductant tank.
A mixing assembly for an exhaust system can include an outer body, a front plate, a back plate, a middle member, and an inner member. The outer body defines an interior volume and has a center axis. The front plate defines an upstream portion of the interior volume and the back plate defines a downstream portion of the interior volume. The middle member is positioned transverse to the center axis and defines a volume. The inner member is positioned coaxially with the middle member inside the middle member. The front plate includes inlets configured to direct exhaust to (i) a first flow path into an interior of the inner member, (ii) a second flow path into the volume of the middle member between a sidewall of the middle member and a sidewall of the inner member, and (iii) a third flow path into the interior volume of the outer body.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
A decomposition chamber for an aftertreatment system includes a body and a diffuser. The body includes an inlet, an outlet, a thermal management chamber, and a main flow chamber. The inlet is configured to receive exhaust gas. The outlet is configured to expel the exhaust gas. The thermal management chamber is in fluid communication with the inlet. The thermal management chamber is configured to receive an exhaust gas first portion from the inlet. The main flow chamber is in fluid communication with the inlet. The main flow chamber is configured to receive an exhaust gas second portion from the inlet and to receive the exhaust gas first portion from the thermal management chamber. The diffuser is positioned within the main flow chamber. The diffuser includes a diffuser inlet portion and a diffuser flange portion. The diffuser inlet portion includes a plurality of diffuser perforations.
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector comprises a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line. A compressed gas source is operatively coupled to the reductant injector and provides a compressed gas to the reductant injector for gas assisted delivery of the reductant. A controller is operatively coupled to the compressed gas source and the reductant insertion assembly and configured to determine whether there is a reductant demand for the reductant. In response to there being no reductant demand, the controller stops the pump and activates the compressed gas source for a predetermined time so as to provide compressed gas to the reductant injector at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the pump is stopped.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F02B 77/04 - Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
F02D 41/34 - Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
F02M 67/02 - Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps
G05B 11/06 - Automatic controllers electric in which the output signal represents a continuous function of the deviation from the desired value, i.e. continuous controllers
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
93.
REDUCTANT DOSING SYSTEM WITH CALIBRATION VALUE DETERMINED BASED ON DATA FROM PRESSURE SENSOR ASSEMBLY AND METHOD OF CALIBRATING A REDUCTANT DOSING SYSTEM
A reductant dosing system includes: an injector; a fixed displacement pump in fluid communication with the injector; a reductant source in fluid communication with the fixed displacement pump; a pressure sensor assembly configured to detect a pressure of reductant in the reductant dosing system; and a controller communicatively coupled to the fixed displacement pump and to the pressure sensor assembly, wherein the controller is configured to calculate a flow rate of the fixed displacement pump based on at least a calibration value determined based on data received from the pressure sensor assembly.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
94.
AFTERTREATMENT SYSTEM INCLUDING NOISE REDUCING COMPONENTS
An apparatus includes a housing defining an internal volume and structured to house aftertreatment component for reducing constituents of an exhaust gas. A noise reducing component is disposed within the internal volume and structured to extend around at least a portion of the aftertreatment component.
A controller configured to be operatively coupled to a reductant insertion assembly comprising a first pump for inserting a reductant into a selective catalytic reduction system, is programmed to set an insertion interval timer for the first insertion interval in response to receiving a firs insertion command. The controller starts the insertion interval timer, records an elapsed time period from the start of the insertion interval timer, and activates the first pump when the timer starts. The controller receives a second insertion command comprising information for activating the first pump for a second duty cycle for second insertion intervals different than the first insertion interval. If the second insertion interval is smaller than the recorded elapsed time period, the insertion interval timer is set for the second insertion interval, the insertion interval timer is started, and if not already activated, the first pump is activated for the second duty cycle.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
96.
IMPROVED SOOT LOAD ESTIMATION USING DUAL DIFFERENTIAL PRESSURE SENSORS
An exhaust filtration system comprises a first pressure sensor and a second pressure sensor, each configured to measure pressure in the exhaust filtration system under low-flow conditions. The exhaust filtration system comprises a third pressure sensor and a fourth pressure sensor, each configured to measure pressure in the exhaust filtration system under high-flow conditions. A flow rate of exhaust gas flowing through the exhaust filtration system is periodically determined. When the flow rate is below a predetermined flow rate threshold, the first and second pressure sensors are used to measure pressure in the exhaust filtration system, and a soot load of the exhaust filtration system is estimated using the pressure measured by the first and second pressure sensors. When the flow rate is above the predetermined flow rate threshold, the third and fourth pressure sensors are used to measure pressure in the exhaust filtration system and a soot load of the exhaust filtration system is estimated using the pressure measured by the third and fourth pressure sensors.
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
F01N 9/00 - Electrical control of exhaust gas treating apparatus
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
97.
REDUCTANT DELIVERY CONDUIT FOR A REDUCTANT STORAGE TANK
An apparatus comprises a reductant storage tank configured to store a reductant, and a reductant delivery conduit. A first end of the reductant delivery conduit is fluidly coupled to the reductant storage tank. A second end of the reductant delivery conduit opposite the first end is configured to be fluidly coupled to a connector of a reductant insertion assembly. At least one bend having a bend angle is provided in the reductant delivery conduit along a length thereof, the at least one bend being configured to inhibit failure at an interface between the second end of the reductant delivery conduit and the connector of the reductant insertion assembly due to freezing of a reductant in the reductant delivery conduit.
F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
E03B 7/10 - Devices preventing bursting of pipes by freezing
E03B 7/12 - Devices preventing bursting of pipes by freezing by preventing freezing
F01N 3/029 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
A particulate filter for use in an exhaust aftertreatment system includes a ceramic substrate and an ash layer deposited atop the ceramic substrate. The ash layer has a uniform ash density of at least 0.4 g/L of the ceramic substrate. A method of depositing ash layers in a particulate filter of an exhaust aftertreatment system includes providing a ceramic substrate, preconditioning the ceramic substrate, depositing at least one ash layer atop the ceramic substrate during the preconditioning, monitoring uptake of soot into the particulate filter by measuring an increase in pressure drop across the particulate filter.
A system for determining an exhaust flow rate of an exhaust gas produced by an engine comprises a first sensor configured to measure an amount of NOx gases in the exhaust gas. A controller is communicatively coupled to the first sensor. The controller is configured to receive a first sensor signal from the first sensor. The controller is also configured to receive a fuel rate signal corresponding to a rate of fuel consumption by the engine. The controller is configured to determine an air-fuel ratio from the first sensor signal and determine a fuel rate from the fuel rate signal. Furthermore, the controller is configured to determine the exhaust flow rate from the air-fuel ratio and the fuel rate.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/18 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl
F01N 11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus
100.
FILTRATION ASSEMBLY FOR USE IN AFTERTREATMENT SYSTEMS FOR INTERNAL COMBUSTION ENGINES
A filtration assembly structured to filter reductant includes an outer housing and an inner housing. The inner housing is positioned within the outer housing. The inner housing is structured to contain the reductant and operable between a first state in which the inner housing has a first volume and a second state in which the inner housing has a second volume that is larger than the first volume, the inner housing including an end face. The inner housing is separated from the outer housing by a gap when the inner housing is in the first state. A volume of the gap decreases as the inner housing transitions from the first state to the second state and increases as the inner housing transitions from the second state to the first state.
B01D 29/11 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
patents
