A supercharged internal combustion engine is drivably connected to a variable displacement supercharger operable to continuously supply varying amounts of an air mass to the engine in response to the varying power requirements of the engine. The variable displacement capability eliminates blowdown losses of fixed displacement superchargers and substantially reduces the need for throttling of the intake air. The device also presents an air-motoring mode that can recover a portion of the engine throttling losses as positive power returned to the engine crankshaft when the engine intake manifold is below atmospheric pressure.
A supercharged internal combustion engine is drivably connected to a variable displacement supercharger operable to continuously supply varying amounts of an air mass to the engine in response to the varying power requirements of the engine. The variable displacement capability eliminates blowdown losses of fixed displacement superchargers and substantially reduces the need for throttling of the intake air. The device also presents an air- motoring mode that can recover a portion of the engine throttling losses as positive power returned to the engine crankshaft when the engine intake manifold is below atmospheric pressure.
F04C 28/14 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
F02B 33/36 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type
F02B 33/38 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type of Roots type
F02D 23/00 - Controlling engines characterised by their being supercharged
F04C 18/14 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 28/10 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
A supercharged internal combustion engine is drivably connected to a variable displacement supercharger operable to continuously supply varying amounts of an air mass to the engine in response to the varying power requirements of the engine. The variable displacement capability eliminates blowdown losses of fixed displacement superchargers and substantially reduces the need for throttling of the intake air. The device also presents an air- motoring mode that can recover a portion of the engine throttling losses as positive power returned to the engine crankshaft when the engine intake manifold is below atmospheric pressure.
F02B 33/36 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type
F02B 33/38 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type of Roots type
F04C 28/10 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
F04C 28/14 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
A supercharged internal combustion engine (10) has a supercharger (11) operable to selectively supply a mass of air from below through above atmospheric air pressure according to the operating requirements of the engine (10). The supercharger (11) has a shuttle (87) combined with a throttle valve (46) that controls the mass of air directed to an air mass bypass opening (84) and supplied to the internal combustion engine (10). The shuttle (87) has rollers (124,126,131,132,133,134,136,137) that ride on rails (143,148) that allow the shuttle (87) to move to open and close the air mass bypass opening (84) in communication with a casing (41) that directs a mass of atmospheric air and a bypass mass of air interfused with the mass of atmospheric air to an air mass inlet (50) of the supercharger (11).
A supercharged internal combustion engine has a supercharger operable to selectively supply a mass of air from below through above atmospheric air pressure according to the operating requirements of the engine. The supercharger has a shuttle combined with a throttle valve that controls the mass of air directed to an air mass bypass opening and supplied to the internal combustion engine. The shuttle has rollers that ride on rails that allow the shuttle to move to open and close the air mass bypass opening in communication with a casing that directs a mass of atmospheric air and a bypass mass of air interfused with the mass of atmospheric air to an air mass inlet of the supercharger.
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F02B 33/36 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type
F02B 39/06 - Mechanical drivesVariable-gear-ratio drives the engine torque being divided by a differential gear for driving a pump and the engine output shaft
F02B 39/16 - Other safety measures for, or other control of, pumps
An internal combustion engine is coupled to a supercharger operable to supply varying amounts of air to the engine responsive to the load on the engine. The supercharger has a pair of screw rotors driven by the engine to move air to the engine and a control apparatus for varying the mass and pressure of air supplied to the engine.
F02B 33/00 - Engines characterised by provision of pumps for charging or scavenging
F02B 33/44 - Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
F04B 17/00 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
F01C 1/16 - Rotary-piston machines or engines of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F01C 1/24 - Rotary-piston machines or engines of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
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)
G06F 7/00 - Methods or arrangements for processing data by operating upon the order or content of the data handled
An internal combustion engine (1 1) drivably connected to a variable displacement and variable internal compression ratio supercharger (18) that supplies varying amounts of air to the engine air intake manifold (12) that can range selectively from below through above atmospheric pressures responsive to the power requirements of the engine (1 1). The supercharger (18) has a pair of rotors (34,36) concurrently driven by the engine (1 1) to move air to the engine (1 1). A slide assembly (22) associated with screw rotors (34,36) is movable with a controller relative to the rotors (34,36) to bypass air to atmosphere and regulate the amount of air and pressure of the air above atmospheric pressure compressed by the screw rotors (34,36) to the engine (11) to increase the engine's efficiency. When operating at part- load unboosted, a throttle valve (202) is operable to control the air mass flowing to the air intake manifold (12) below atmospheric pressure to control the power of the engine (1 1).
F01C 11/00 - Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
F02B 33/38 - Engines with pumps other than of reciprocating-piston type with rotary pumps of positive-displacement type of Roots type
F02B 33/44 - Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02D 23/00 - Controlling engines characterised by their being supercharged
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 28/12 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
An internal combustion engine drivably connected to a variable displacement and variable internal compression ratio supercharger that supplies varying amounts of air to the engine air intake manifold that can range selectively from below through above atmospheric pressures responsive to the power requirements of the engine. The supercharger has a pair of rotors concurrently driven by the engine to move air to the engine. A slide assembly associated with screw rotors is movable with a controller relative to the rotors to bypass air to atmosphere and regulate the amount of air and pressure of the air above atmospheric pressure compressed by the screw rotors to the engine to increase the engine's efficiency. When operating at part-load unboosted, a throttle valve is operable to control the air mass flowing to the air intake manifold below atmospheric pressure to control the power of the engine.
F02B 33/44 - Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02B 33/00 - Engines characterised by provision of pumps for charging or scavenging
F01C 1/16 - Rotary-piston machines or engines of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
