Inlet and exhaust valves

Some high-performance engines have two separate camshafts, one for each set of inlet and exhaust valves.

一些高性能发动机有两个单独的凸轮轴，分别负责开关进气门和排气门。

Valve rotator is an important device to ensure the normal operation of the inlet and exhaust valves of a medium speed diesel engine.

旋阀机构是保证中速柴油机进、气阀正常工作的重要装置。

Modern car engines that use rolling or sliding tappets for transmitting the rapid up-down lifting motion of the spinning camshafts—to open and close the engine’s inlet and exhaust valves—seem immune.

使用滚柱挺杆或滑动挺杆来传动旋转凸轮轴做上下快速提升动作（开启和关闭发动机的进气阀和排气阀）的现代型汽车发动机似乎不会出现上述自动熄火的情况。