电控汽油机活塞位置检测原理探究

反映四冲程汽油机的活塞在气缸中的位置时,要用到三个位置信号:上止点信号、压缩行程信号、曲轴转角信号。电控系统为了得到指示活塞位置的信号要使用相应的传感器来检测出这三个位置信号,不同的发动机,获取活塞位置信号的地点不同,但从曲轴上获取的位置信号的精度高于从凸轮轴或分电器轴上获取的信号的精度。从曲轴上获取活塞位置信号时,所使用的上止点传感器及曲轴转角传感器在结构上趋向于一体化。

Principle and Sensor of Electronic Control Gasoline Engine Detecting Piston Position

It is necessary to use three position signals when reflect the position of Four Stroke Gasoline Engine's piston in cylinder: Top Dead Center Signal, Compression Stroke Signal, Crankshaft Position Signal. In order to get the signal of indicating piston position, electronic control system should use corresponding sensor to detecting these three position signal. Different gasoline engine has different location of piston position signal, however, it is more accurate to get position signal from Crankshaft than from Cam Shaft or Distributor Shaft. When obtain piston position signal from Crankshaft, Top Dead Center Sensor and Crankshaft Position Sensor tend to be integrative in structure.