Fuel supply system and stalling and fuel-cutoff device thereof
A fuel supply and fuel cut-off technology, applied in the direction of the charging system, liquid fuel feeder, carburetor, etc., can solve problems such as difficulty in starting, engine failure to start normally, insufficient fuel supply in the fuel supply system, etc., to ensure normal operation running effect
Pending Publication Date: 2020-09-04
HUAYI MECHANICAL & ELECTRICAL CO LTD
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Problems solved by technology
The solenoid valve is in the normally closed state when it is not working. When the engine needs to start, the solenoid valve needle cannot be opened due to insufficient voltage, resulting in insufficient fuel supply to the fuel supply system, which makes the engine unable to start normally and difficult to start.
Method used
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[0053] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:
[0054] see figure 1 and figure 2 , figure 1 It is a schematic diagram of the three-dimensional structure of the fuel supply system according to an embodiment of the present invention (the position when the choke flap 3 is fully opened), figure 2 It is a three-dimensional structure schematic diagram of the fuel supply system according to an embodiment of the present invention (the position of the choke flap 3 fully closed, that is, the schematic diagram of the engine not working or running state). The present invention provides a fuel supply system with a flame-out and fuel-cutting device. The composition, structure, mutual positional relationship, connection relationship and functions of other parts of the fuel supply system are relatively mature prior art, so they will not be discussed here. To repeat, the following will...
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The invention relates to a fuel supply system and a stalling and fuel-cutoff device thereof. The fuel supply system comprises the stalling and fuel-cutoff device, wherein the stalling and fuel-cutoffdevice comprises an electromagnetic valve, a diaphragm type oil switch and a shifting fork, the electromagnetic valve is installed on a carburetor body of the fuel supply system and is used for controlling a fuel inlet pipe of the fuel supply system to open and close, the diaphragm type oil switch is installed on the electromagnetic valve and comprises a diaphragm, an ejector pin and an elastic ejector pin reset member, the diaphragm is connected with the ejector pin, the ejector pin is abutted with a valve needle of the electromagnetic valve, the elastic ejector pin reset member sleeves the ejector pin and is abutted with the electromagnetic valve, the ejector pin is respectively provided with a start position and an operating position relative to the valve needle, the shifting fork is installed on the carburetor body, one end of the shifting fork is connected with a choke valve shaft of a carburetor and is used for controlling a choke valve of the carburetor to open and close by virtue of the choke valve shaft, and the shifting fork is connected with the diaphragm type oil switch and is used for controlling the ejector pin to locate in the start position or the operating positionrespectively.
Description
technical field [0001] The invention relates to a fuel supply system, in particular to a fuel supply system with a flame-out and fuel-cutting device and the flame-out and fuel-cutting device. Background technique [0002] The solenoid valve of the existing fuel supply system is in a normally closed state when it is not powered on. The engine is not connected to an external power supply, and the solenoid valve needs to be powered by the engine to ensure that the solenoid valve works. The solenoid valve is in the normally closed state when it is not working. When the engine needs to start, the solenoid valve needle cannot be opened due to insufficient voltage, resulting in insufficient fuel supply to the fuel supply system, which makes the engine unable to start normally and difficult to start. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fuel supply system with a flame-out and fuel-cutting device and the flam...
Claims
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IPC IPC(8): F02M37/00F02M1/02
CPCF02M37/0023F02M1/02
Inventor 徐小平钱光明叶秀峰
Owner HUAYI MECHANICAL & ELECTRICAL CO LTD