一、前 言 内燃机凸轮轴凸轮升程测量中,确定其测量起始点是合理评定凸轮升程质量的关键,目前确定的方法很多,本文就“敏感点”六点确定法阐述如下。 我们过去常用的确定方法(也是目前国 I. Introduction In the cam camshaft lumens measurement of internal combustion engine, determining the starting point of its measurement is the key to properly evaluate the quality of the cam lift. There are many ways to determine the cam lift at present. This article describes the six points determination method of “sensitive points” as follows. We used to determine the method (also the current country