One of the jobs of pcv system is to remove these crankcase contaminants before the rotating crankshaft mixes them with the oil . PCV系统的作用之一是，在旋转的曲轴把水和液体汽油混合之前，把它们排出曲轴箱。
In 1961, auto manufacturers began installing crankcase emission control system on cars built for registration in california . 早在1961年，汽车制造厂商便开始在汽车制造时安装曲轴箱有害污染控制系统，并在美国加利福尼亚州注册。
Replacement of the air pipe for crank case ventilation system 更换引擎曲轴箱系统气嘴
Cd - regvlv crankcase depression regulator valve 曲轴箱真空调节器阀
The oil is leaking out from the crankcase 没已从曲轴箱中漏出来。
05 . 01 dilution of gasoline engine crankcase oils , method of test for 汽油发动机曲轴箱油稀释试验方法
