air inlet pipe meaning in English

进气管

When the inlet valve opens , a pressure pulse is generated in the air inlet pipe , which is damped as the piston continues to move . when the inlet valve closes , another pressure pulse of certain duration is generated , thus giving rise to a periodic inlet noise
当进气门开启时，在进气管中产生一个压力脉冲，而随着活塞的继续运动，它受到阻尼；当进气门关闭时，同样产生一个有一定持续时间的压力脉冲。
This paper investigates the structural parameters of air inlet pipe , air compensating pipe and air compensating valve which influence the air compensation of air compensating valve for motorcycle catalytic converter , the position of air compensating hole , and the relationship of air compensating pressure with engine speed
本文就影响摩托车催化转化器补气阀补气量的进气管、补气管、补气阀的结构参数，以及补气孔的位置、补气压力随转速的变化关系等进行了探讨。