发动机气门间隙异常原因分析及对策

Cause of Abnormal Engine Valve Clearance and Solution

某系列发动机近几年来在主机配套厂出厂试车过程中每月都会有几起气门间隙偏大或偏小的报修,成了一种常见的发动机故障模式。本文试图对影响发动机气门间隙的相关原因做一粗浅的分析,从而找出一些有效的对策,降低此类故障发生率,以供同行参考。

There was claim about abnormal valve clearance occurring during the ex-work test of some kind of engine every month in recent years,ether beyond the maximum clearance or below the minimum one,which becoming a failure model.Initial analysis of the root cause of this failure is made to find an effective solution in order to reduce the rate of such failure and provide as reference to our counterpart.