排气阀门是一种涡轮增压式引擎系统上的从涡轮分离出废气的阀门。废气分离使得涡轮速度降低，也相应的降低了压缩机的转速。
他们常用的交替施加压力和排气阀门执行器或单作用气缸的压力。
They're commonly used to alternately apply pressure to and exhaust pressure from a valve actuator or a single acting cylinder.
本发动机自动进气、自动排气，而省去了进、排气阀门及传动系统。
It automatically admits and exhausts the gas, thus omitting gas inlet and outlet valves and driving system.
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。
When the exhaust valve is closed, the gas with the bubble oscillation reduces, causing the bubble impulse lower the pressure impulse obviously.
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