When the exhaust valve is closed, the gas with the bubble oscillation reduces, causing the bubble impulse lower the pressure impulse obviously.
排气阀门的关闭直接造成参与气泡振荡的气体质量的减少，第二气泡脉冲相对主脉冲明显减小。
The space above the piston is now sealed due to the inlet valve closing and the exhaust valve having already closed.
由于进气门关闭、排气门也已关闭，现在活塞上部的空间被密封了。
Now, when the engine is started, the hot exhaust gases are deflected by the closed heat-control valve.
现在当发动机起动时，关闭的热控制阀引导热废气。
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.
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。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
The intake stroke starts with the pistonat the top of the cylinder (intake valve open and exhaust valve closed) and stops with the pistonat the bottom of its travel.
进气冲程在活塞位与气缸顶部（进气门开启，排气门关闭）时开始，在活塞到达其行程的底部时结束。
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