Gas mixing valve for gas burning engine

Abstract

The gas mixing valve for gas burning engine consists of mainly pressure reducing stabilizer, safe gas-off unit and mechanical speed regulator. The inflammable gas entering the lower membrane chamber has pressure reduced and stabilized by the combined effect of rocker lever, lower membrane, spring, regulating screw and locking nut. During the operation of the engine, the cylinder produces certain vacuum to suck down the upper membrane, so that the fuel gas passage on the membrane rod is opened for the fuel gas to the throat via the monoway hole. If the engine stops, the fuel gas passage will be closed owing to no vacuum, resulting in no fuel gas leakage. The fuel gas through the throat and air sucked through the choke valve are mixed and the mixed gas is sucked into the cylinder for burning, and the throttle has opening automatically regulated with the rotation speed so as to stabilize the rotation speed of the engine.

Description

technical field [0001] The invention relates to a gas mixing device, in particular to a gas mixing valve for a gas engine, and the applicable gas includes natural gas, liquefied petroleum gas, biogas and other combustible gases. Background technique [0002] At present, most of the general-purpose small engines produced at home and abroad use gasoline or diesel as fuel models, such as generator sets, integrated water pumps, lawn mowers and power for non-road vehicles. As we all know, the exhaust gas emitted by these engines pollutes the atmosphere very seriously, has endangered people's physical and mental health, and has also limited the development of its international market. In order to change the above situation, people try to use combustible gas as energy source to replace gasoline and diesel, such as natural gas, liquefied petroleum gas, biogas, etc., because the pollutants in the tail gas produced by the combustion of these combustible gases are very small, and the p...

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the technical problems in the prior art that the gas mixing valve of the general-purpose small gas engine has poor mechanical coordination, low reliability, unstable control, and easy mechanical failure.

[0004] The invention also solves the technical problems in the prior art that the gas mixing valve of the gas engine is expensive, the modification cost of the ordinary engine is relatively high, and it is difficult to popularize.

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