exhaust valve opening

The intake and exhaust valve opening times will overlap as RPMs rise, recycling some of the charge the outgoing air creates.

进气和排气的气门开合时间随着转速的提高相互交叠，循环着将废气排出。

The exhaust gas ingredients of pulse engines, with five different combustion chamber volumes, throttle valve at small, middle and wide opening positions respectively, are tested.

对五种不同燃烧室体积的脉冲发动机在小、中和大油门开度三种供油条件下测定其排放物。

If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.

如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。