一、前言如果汽车正时齿轮发生断齿,汽车就不能行驶了。而这种齿轮更换起来很费事,至少要停车一天,这对汽车司机来说是非常伤脑筋的。所以汽车正时齿轮的质量,是关系到汽车能否正常运行的问题。汽车胶木正时齿轮,使用寿命往往不长。经过我们与第一汽车制造厂非金属试验室的同 First, the foreword If the car timing gear broken teeth, the car can not drive. And this kind of gear change is very troublesome, at least must stop for a day, this is very headache to the automobile driver. Therefore, the quality of the car timing gear is related to the issue of whether the car can operate normally. Bakelite timing gear, the service life is often not long. After we and the first automobile factory non-metallic laboratory with the same