Hydraulic servo high-pressure valve

Abstract

The invention relates to a hydraulic servo high-pressure valve, which comprises a hydraulic servo oil cylinder assembly (SFYG), a three-position four-way solenoid valve (9), a valve (6), an engine electric control unit ECU and a hydraulic supply unit. The action of the hydraulic servo high-pressure valve is completely independent, not influenced by a crank angle, and directly controlled by an operating instruction of the ECU; and the hydraulic servo high-pressure valve can directly open and close the high-pressure air on an air inlet side. The ECU of an engine, a combined flexible engine and ahybrid flexible engine, of which a combustion chamber directly applies high-pressure air or high-pressure combustible gas mixture, can conveniently adaptively control the charge, pressure and air-fuel ratio of the combustible gas mixture in the combustion chamber according to the power required by load; and the engine is operated in the optimum state under full working conditions and can avoid the waste phenomenon that 'a big horse pulls a small carriage'. The hydraulic servo high-pressure valve has simple structure, good manufacturing process, low manufacturing cost, and simple and convenient maintenance, can be reformed on the prior basis of a common engine, has little change to the prior engine, and is easy to realize the industrialization of technology.

Description

technical field [0001] The invention relates to a hydraulic servo high-pressure valve, which is used for an engine that directly fills a combustion chamber with high-pressure air or high-pressure combustible mixture. Background technique [0002] Existing engines complete air intake and compression by themselves, without directly inputting high-pressure air or high-pressure combustible mixture. Therefore, the existing various intake valves only need to bear the high-pressure gas pressure on the cylinder side, and do not need to bear the pressure on the intake side. The high-pressure gas pressure does not have the ability to directly switch the high-pressure air or high-pressure combustible mixture on the intake side. Contents of the invention [0003] In order to overcome the deficiencies of various existing intake valves, the present invention provides a hydraulic servo high-pressure valve, which is suitable for engines that directly apply high-pressure air or high-pressu...

AI Technical Summary

Problems solved by technology

[0002] Existing engines complete air intake and compression by themselves, without directly inputting high-pressure air or high-pressure combustible mixture. Therefore, the existing various intake valves only need to bear the high-pressure gas pressure on the cylinder side, and do not need to bear the pressure on the intake side. High-pressure gas pressure, there is no ability to directly switch high-pressure air or high-pressure combustible mixture on the intake side

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