Abstract

A non-road engine is provided. The non-road engine includes a carburetor and a combination switch for controlling on-off of a fuel supply pipe between a fuel tank and the carburetor, where the carburetor is provided with a control valve for controlling opening and closing of a main jet; the control valve is linked and matched with the combination switch; when the combination switch is in an on state, the control valve causes the main jet to be in an open state; and when the combination switch is in an off state, the control valve causes the main jet to be in a closed state.

IPC Classes  ?

• F02M 5/08 - Float-controlled apparatus for maintaining a constant fuel level in carburettors having means for venting float chambers
• F02M 7/22 - Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves fuel flow cross-sectional area being controlled dependent on air-throttle-valve position
• F02M 17/04 - Floatless carburettors having fuel inlet valve controlled by diaphragm
• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatusArrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines

Abstract

A non-road mobile machinery (NRMM) is provided and includes a fuel storage device, a fuel supply device, a vapor adsorption device, and an engine body. The vapor adsorption device is provided with an air vent communicated to the atmosphere. A vapor discharge hole of the fuel storage device is communicated to an adsorption vent of the vapor adsorption device. The NRMM also includes a valve mechanism connected between a desorption vent of the vapor adsorption device and an intake channel of the engine body. The valve mechanism is conducted with the working of the engine body and blocked with the stop of the engine body. The NRMN improves the evaporation emission performance of the NRMM when compared to the prior art and solves the problem that the evaporation emissions of the NRMM in the prior art are prone to exceed the standard.

IPC Classes  ?

• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents

Abstract

A multi-fuel switching device, including a gas part, is provided. The gas part includes a switching valve. The switching valve includes a housing having an air inlet and an air outlet. An internal rotation of the housing is provided with a valve core located between the air inlet and the air outlet. The valve core is provided with a first airway and a second airway. Cross-sectional sizes of the first airway and the second airway are different. The first airway or the second airway is selected through rotating the valve core to connect the air inlet and the air outlet. The solution solves the issue that a fuel switching device in the prior art cannot adapt to three or more fuels, which causes an internal combustion engine to be unable to maintain the optimal working state.

IPC Classes  ?

• 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
• F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatusArrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

An engine balancing system includes an engine body. At least two slider-crank mechanisms are provided inside the engine body. One of the slider-crank mechanisms is arranged opposite to the other slider-crank mechanism. A slider in one of the slider-crank mechanisms is moved at a speed and acceleration similar to a speed and acceleration of a slider in the other slider-crank mechanism. The slider-crank mechanism includes a connecting rod and a crankshaft with a crank. One end of one of the slider-crank mechanisms and one end of the other slider-crank mechanism are connected to the same crankshaft through the crank. The balancing system can effectively eliminate first-order, second-order and higher-order vibrations generated during engine operation, thus reducing the probability of equipment damage.

IPC Classes  ?

• F16F 15/26 - Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system
• F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
• F02B 75/18 - Multi-cylinder engines
• F16F 15/24 - Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like

Abstract

An oil and gas separation device for an internal combustion engine includes a first chamber, a second chamber, and a third chamber provided successively from bottom to top, wherein the first chamber is connected to the second chamber through a first gas channel. The second chamber is connected to the third chamber through a second gas channel. The third chamber is connected to a gas outlet pipe. A bottom of the first chamber is connected to an internal combustion engine body. A lower oil baffle plate is provided between the bottom of the first chamber and the internal combustion engine body. The first gas channel is longitudinally covered by the lower oil baffle plate. The oil and gas separation effect and speed can be improved by employing the oil and gas separation device for the internal combustion engine of the present disclosure.

IPC Classes  ?

• F01M 13/00 - Crankcase ventilating or breathing
• F01M 13/02 - Crankcase ventilating or breathing by means of additional source of positive or negative pressure
• F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil

Abstract

An engine balance system, comprising: an engine body, wherein at least two slider-crank mechanisms are disposed inside the engine body. One of the slider-crank mechanisms is arranged opposite to another one of the slider-crank mechanisms, and a slider in one of the slider-crank mechanisms is moved with speed and acceleration similar to those of a slider in another one of the slider-crank mechanisms. The balance system can effectively eliminate first-order, second-order, and higher-order vibrations generated during engine operation and reduce the equipment damage rate.

IPC Classes  ?

• F16F 15/24 - Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
• F02B 75/32 - Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
• F16F 15/26 - Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system

Abstract

Provided is an oil and gas separation device for an internal combustion engine, comprising a first cavity (10), a second cavity (11) and a third cavity (12), which are arranged in the longitudinal direction. The first cavity (10) communicates with the second cavity (11) via a first gas passage (13). The second cavity (11) communicates with the third cavity (12) via a second gas passage (14). An outlet pipe (6) is communicated to the third cavity (12). A bottom of the first cavity (11) is in communication with an internal combustion engine body (5), and a lower oil baffle plate (4) is arranged between the bottom of the first cavity (10) and the internal combustion engine body (5). The lower oil baffle plate (4) longitudinally covers the first gas passage (13). By using the internal combustion engine oil and gas separation device, the speed and effect of oil and gas separation can be improved.

IPC Classes  ?

• F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
• F01M 11/08 - Separating lubricant from air or fuel-air mixture before entry into cylinder

Abstract

The present utility model discloses a universal gasoline engine fuel tank cover including an outer shell, an inner shell and a sealing cover located on the upper surface of the inner shell, wherein the outer shell and the inner shell are connected through a ratchet mechanism and a limiting mechanism, the inner shell having a partition I and a partition II disposed in its upper cavity to divide the upper cavity into a first adsorption chamber, a second adsorption chamber and a third adsorption chamber, the first adsorption chamber and the second adsorption chamber having fine carbon particles disposed therein, the third adsorption chamber having a cylindrical foam disposed therein, the bottom of the partition I being disposed with an air hole I connecting the third adsorption chamber to the fuel tank, and the bottom of the first adsorption chamber being disposed with an air hole II causing the first adsorption chamber to be connected to the atmosphere outside. The present utility model is advantageous in that it has a delicate structural design, it is easy to assemble, its cost is low, it can effectively prevent direct exhaust of volatilized gasoline into the atmosphere, and accurate judgment can be made as to whether the fuel tank cover is adequately tightened.

IPC Classes  ?

• B65D 51/16 - Closures not otherwise provided for with means for venting air or gas
• B65D 1/24 - Boxes or like containers with side walls of substantial depth for enclosing contents with moulded compartments or partitions

Abstract

An automatic control apparatus for a carburetor choke valve includes a pull-rod, throttle control lever, choke block, and temperature control assembly which is arranged on a cylinder head through a bracket having a rotating shaft and coil spring. The rotating shaft is connected to the spring and one end of the pull-rod via a rotary arm. The other end of the pull-rod is located at a choke valve shaft. The block and valve shaft are connected to respective ends of the lever. During cold start, the block is opened driving the lever to pull the valve shaft. When rotated through a certain angle the valve shaft is blocked by part of the pull-rod, such that the valve and block cannot be fully opened. During warm start, the valve shaft when returning is blocked by another part of the pull-rod such that the valve cannot fully close.

IPC Classes  ?

• F02M 1/08 - Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
• F02M 1/10 - Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat

Abstract

A tank cover for a general gasoline engine comprises an outer casing (1), an inner casing (2) and a seal cap (3) located on an upper end surface of the inner casing (2). The outer casing (1) is connected to the inner casing (2) through a ratchet mechanism and a limiting mechanism. A first baffle plate (7) and a second baffle plate (8) are disposed in an upper chamber of the inner casing (2) to divide the upper chamber into a first adsorption cavity (4), a second adsorption cavity (5) and a third adsorption cavity (6) from the outside in. Carbon particles (10) are disposed in the first adsorption cavity (4) and the second adsorption cavity (5). Foam (11) is disposed in the third adsorption cavity (6). A first vent hole (12) communicating the third adsorption cavity (6) to the tank is disposed at the bottom of the first baffle plate (7). A second vent hole (32) communicating the first adsorption cavity (4) to the outside is disposed at the bottom of the first adsorption cavity (4). The tank cover prevents the evaporated gas of the fuel from being directly discharged to the air.

IPC Classes  ?

• B60K 15/05 - Inlet covers

Abstract

An automatic control apparatus for a carburettor choke valve comprises a temperature control assembly, a pull-rod (1), a throttle control lever (15) and a choke block (14), wherein the temperature control assembly is arranged on a cylinder head (3) by means of a bracket (2), with the bracket (2) being provided with a rotating shaft (4) and a coil spring (5) connected to the rotating shaft (4); the rotating shaft (4) is connected to one end of the pull-rod (1) via a rotary arm (6), the other end of the pull-rod (1) is located at a choke valve shaft (11), and one end of the throttle control lever (15) is connected to the choke block (14) while the other end thereof is connected to the choke valve shaft (11). During a cold start, the choke block (14) is opened driving the throttle control lever (15) to pull the choke valve shaft (11); when rotated through a certain angle the choke valve shaft (11) will be blocked by the part a of the pull-rod (1) at a location (l-a), such that the choke valve and the choke block (14) cannot be fully opened; and during a warm start, the choke valve shaft (11) when returning will be blocked by the part b of the pull-rod (1) at a location (l-b), such that the choke valve cannot be fully closed. This automatic control apparatus for a carburettor choke valve limits the position of the pull-rod to prevent the rotation thereof by utilizing a holding bracket so as to enable the automatic control of the opening angle of the choke valve and to effectively improve engine starting performance.

IPC Classes  ?

• F02M 1/08 - Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically