Variable compression ratio and variable air distributing phase

Abstract

A microcomputer controlled variable compression ratio and variable air distribution phase is disclosed, and can increase the thermal efficiency, volume efficiency and mechanical efficiency of engine, save fuel, decrease the preheat time and prevent overhigh cooling temp. and decrease the abrasion of brake. The acceleration position sensor and other sensors output the electric signals to the microcomputer for controlling the controllers of air inlet and outlet valves. When corking conditions of 4-stroke engine change, the air inlet and outlet valves can be controlled at correct positions of crankshaft.

Description

technical field

[0001] The invention relates to a microcomputer-controlled variable variable compression ratio and variable valve timing of a four-stroke engine. Background technique

[0002] At present, the control technology of the microcomputer to the four-stroke engine (hereinafter referred to as the engine) develops rapidly. People's Communications Publishing House published in June 1982 the 51 pages of a book on fuel-saving knowledge of automobiles, revealing that for variable compression ratio engines, one way to change the compression ratio is to change the piston stroke; the second way is to change the volume of the combustion chamber. And it can be large or small at any time, but it has not been put into practical use for decades, because the structure is complex and the process requirements are high.

[0003] Chinese patent specification 94108814 discloses the working method of the microcomputer-controlled AC hydraulic variable valve timin...

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