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Fuel cut-off valve of integrated filter screen structure

A fuel cut-off and screen technology, applied in the charging system, combustion engine, internal combustion piston engine, etc., can solve problems such as sticking, fuel cut-off valve leakage, etc., to avoid fuel leakage, improve cleanliness, and solve stuck. glitch effect

Inactive Publication Date: 2018-08-21
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fuel cut-off valve with an integrated filter structure, so as to overcome the shortcomings of the fuel cut-off valve in the prior art that are easily polluted by foreign objects and impurities entering the upstream pipeline and cause fuel cut-off valve leakage and sticking

Method used

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  • Fuel cut-off valve of integrated filter screen structure
  • Fuel cut-off valve of integrated filter screen structure
  • Fuel cut-off valve of integrated filter screen structure

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Embodiment Construction

[0018] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0019] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0020] Such as Figure 1-2 As shown, the fuel cut-off valve with integrated filter screen structure according to the preferred embodiment of the present invention includes: a valve body 1 , an inlet joint 2 and a filter screen 3 . Wherein, the valve body 1 has an inlet port. An inlet fitting 2 is fitted at the inlet end of the valve body 1 . The filter screen 3 can be integrated in the valve body 1 or on the inlet joint ...

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Abstract

The invention discloses a fuel cut-off valve with an integrated filter screen structure. The fuel cut-off valve of the integrated filter screen structure comprises a valve body, an inlet joint, and afilter screen, wherein the valve body is provided with an inlet end; the inlet joint is assembled to the inlet end of the valve body; and the filter screen can be integrated into the valve body or beintegrated on the inlet joint. According to the fuel cut-off valve, the filter screen structure is integrated so that the cleanliness of the fuel cut-off valve can be effectively improved, the fuel cut-off valve is effectively protected from being polluted by foreign matters and impurities entering the upstream pipeline, so that the problems of a clamping stagnation fault is solved, and the problems that fuel leakage and fuel shut-off valve control failure are solved.

Description

technical field [0001] The invention relates to the technical field of natural gas engines, in particular to a fuel cut-off valve with an integrated filter screen structure. Background technique [0002] At present, the fuel cut-off valves commonly used in natural gas engines include straight-through type and pilot type. supply, such as high-pressure fuel cut-off valve, low-pressure fuel cut-off valve, etc. Taking the diaphragm type pilot-operated low-pressure fuel shut-off valve as an example (refer to QC / T 674-2007 "Compressed Natural Gas Solenoid Valve for Automobiles"), the working principle of the fuel shut-off valve is as follows: when the power is off, the air flow at the inlet end of the fuel shut-off valve The pressure enters the top of the diaphragm through the micropore of the valve body diaphragm, so that the inlet port and the top of the diaphragm have the same air pressure. Because the force-bearing area above the diaphragm is large, the valve port can be pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCF02M21/0215F02M21/0227F02M21/0242Y02T10/30
Inventor 林鹏慧公旭盛利宁德忠黄林
Owner GUANGXI YUCHAI MASCH CO LTD
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