Pressure reducing regulator for LPG
A technology of liquefied petroleum gas and pressure regulator, which is applied in the direction of fluid pressure control, valve device, safety valve, etc. without auxiliary power, and can solve the problems of low-temperature start-up of liquefied petroleum gas engine and the influence of vacuum degree, and achieve the lowest temperature for extended use Effects of limitation, control simplification, and control stability improvement
Inactive Publication Date: 2003-08-06
JILIN UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to provide a liquefied petroleum gas decompression regulator to solve the problem that the injection amount of liquefied petroleum gas low-pressure gas injection is affected by the vacuum degree behind the throttle body, and to improve the low-temperature start-up problem of liquefied petroleum gas engines
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[0008] The present invention will be described in further detail below in conjunction with accompanying drawing
[0009] The present invention provides a liquefied petroleum gas decompression regulator, comprising a gas outlet 1 communicating with a gas nozzle, an air inlet 13 communicating with the gas of a gas storage cylinder, a pressure regulator housing 2, a pressure regulating diaphragm 3, Pressure regulating lever 7, support shaft 8, pressure regulating push rod 9, pressure regulating sleeve 10, axial air outlet 11 on the pressure regulating sleeve 10, sealing gasket 12, pressure regulator cover 15, pressure regulating spring 17, The vacuum regulating joint 19 and the pressure regulator cover 15 are installed on the upper part of the pressure regulator housing 2, and the two bodies are divided into upper and lower chambers by the pressure regulating diaphragm 3. The joint 19 communicates with the intake pipe behind the throttle body of the engine, the lower chamber is t...
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The liquefied petroleum gas pressure-reducing pressure regulator includes shell body, pressure-regulating film, pressure-regulating lever, supporting shaft, pressure-regulating push bar, pressure-regulating sleeve, pressure regulator cover, pressure-regulating spring and vacuum regulation connector. The pressure-regulator cover and its shell body are separated into upper and lower two cavities bymeans of pressure-regulating film, the upper cavity is vacuum pressure-regulating cavity communicated with air inlet pipe behind throttle valve of the engine by means of vacuum regulation connector, and its lower cavity is gas cavity, the pressure-regulating sleeve is mounted on one side of its shell body near by air inlet, the sealing gasket is placed in the pressure-regulating sleeve.
Description
technical field [0001] The invention relates to a liquefied petroleum gas decompression regulator, in particular to an electronically controlled injection liquefied petroleum gas engine decompression and pressure regulator. Background technique [0002] The use of electronically controlled injection of gaseous fuel in the engine is a key measure to solve the exhaust pollution of the engine. The use of electronically controlled injection technology and the use of gaseous fuel can completely make the emissions of the engine and the whole vehicle meet the European II emission standard. However, the traditional liquefied petroleum gas pressure reducer, no matter it is single-stage or multi-stage, can only reduce the pressure of liquefied petroleum gas to a certain value, but cannot increase with the vacuum degree behind the throttle body. Therefore, under the same injection pressure and injection pulse width, due to the change of the vacuum degree behind the throttle body, the ...
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IPC IPC(8): F16K17/04G05D16/06
Inventor 邓宝清李理光肖宗成苏岩王惠萍杨卓
Owner JILIN UNIV