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精密凸轮轴是汽车发动机气配系统中的一个关键部件,它的主要作用在于控制各气缸的进排气门开闭时间和开启量的大小,使符合一定的工作次序和开启变化规律。当汽车发动机工作时,凸轮轴上控制各气缸和进气(或排气)凸轮的相对角位置及其轮廓变化应精确保证气门开启
The precision camshaft is a key component in the air distribution system of the automobile engine. Its main function is to control the opening and closing time and opening amount of the intake and exhaust valves of each cylinder so as to conform to a certain work order and to open the variation rule. When the car engine work, the camshaft control of each cylinder and intake (or exhaust) the relative position of the cam and its contour changes should be precise to ensure valve open