在发动机中，凸轮轴上的凸轮控制进气门和排气门的开启和关闭。
In the engine, cams on the CAM shaft cause the intake and exhaust valves to open.
在压缩行程，活塞向上运动，进气门和排气门关闭，活塞压缩混合气。
On the compression stroke, the piston moves up. The intake valve and exhaust valve close. The piston compresses the air-fuel mixture.
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。
Some high-performance engines have two separate camshafts, one for each set of inlet and exhaust valves.
在作功行程，进气门和排气门关闭，火花塞点燃混合气，活塞向下移动。
On the power stroke, the intake valve and exhaust valve close. The spark plug ignites the air-fuel mixture, the piston moves down.
但是像进气门一样，排气门需要时间到达充分打开和关闭的位置。
But like the inlet valve, the exhaust valve needs time to reach the full-open position, it also needs time to reach the full-closed position.
通过对模糊控制器的设计，计算出EQ6 10 0汽油机在不同工况下的排气门提前开启角和进气门滞后关闭角的模糊控制值。
The fuzzy control values of the optimized exhaust lag angle and intake advance angle of the EQ6100 engine are calculated by designing the fuzzy controller.
通过对模糊控制器的设计，计算出EQ6 10 0汽油机在不同工况下的排气门提前开启角和进气门滞后关闭角的模糊控制值。
The fuzzy control values of the optimized exhaust lag angle and intake advance angle of the EQ6100 engine are calculated by designing the fuzzy controller.
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