Gas engine capable of automatically adjusting expansion ratio

Abstract

The invention discloses a gas engine capable of automatically adjusting an expansion ratio. The gas engine comprises an engine shell in which a cam piston is arranged, wherein a gas inlet and a gas outlet are formed on the engine shell; the gas engine is characterized in that: a rotary blade valve is hinged with the engine shell between the gas inlet and the gas outlet; a sliding slot is formed at the upper end of the rotary blade valve; a buffering plug which is connected with the sliding slot and capable of sliding relative to the sliding slot is arranged in a buffering sleeve; a buffering check valve is arranged at the end of the buffering sleeve; a buffering cavity in the buffering sleeve is communicated with an inner cavity of the engine through a buffering pipeline; and a check valve is arranged on the buffering pipeline. The gas engine has the advantages of automatically adjusting the expansion ratio according to gas pressure in the cavity of the engine, reducing or even avoiding exhaust power consumption, effectively reducing friction resistance and the like, along with simple structure and ingenious design.

Description

technical field [0001] The invention relates to a gas engine, especially an expansion engine that can automatically adjust the expansion ratio according to the air pressure in the engine cavity, can adapt to different intake pressure changes, reduces or even basically eliminates exhaust energy consumption, and effectively reduces frictional resistance. Than automatic adjustable gas engine. Background technique [0002] With the development of the automobile industry, energy and environmental protection issues have become increasingly prominent, and the research on clean alternative energy has generally attracted great attention all over the world. Therefore, the research on pneumatic engines has also made great progress. Traditional pneumatic engines mainly include reciprocating piston type, vane type, rotary piston type, etc., but no matter what kind of structural form the engine has the defect of fixed expansion ratio, during the operation of the engine, the situation in ...

AI Technical Summary

Problems solved by technology

If the intake pressure is higher than the set value, the high-pressure gas will be discharged out of the machine without complete expansion, resulting in a decrease in gas conversion efficiency; if the intake pressure is lower than the set value, the pressure in the cylinder will be lower than the exhaust pressure in the later stage of piston expansion. , the engine will waste part of its work on exhaust, thereby reducing the effective work of the engine

At the same time, the higher the expansion ratio of the engine, the higher the sealing requirements inside the engine, which greatly increases the frictional resistance generated when the engine is running.

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