本文介绍一种利用柴油机高压泵喷油管壁上的压力波脉冲信号，来测量柴油机转速的新方法。
The paper introduces a new rotating speed measuring method for diesel engine utilizing pressure pulse signal on the tube wall of high pressure fuel injection system of diesel engine.
泵-管-嘴式喷油系统中喷油嘴与高压油管的结构参数决定燃油的喷雾质量，从而影响整个柴油机的燃烧状况。
The quality of fuel spray is decided by the structure of nozzle and high-pressure fuel pipe in the pump-tube-nozzle fuel injection system, and it influences the whole diesel combustion.
井压较低时，关闭环型防喷器，使油管和接箍强行通过环型防喷器胶芯。
Close the annular blowout preventer as the well pressure is relatively low and force oil pipes and couplings to pass through rubber core of the annular blowout preventer.
井压较低时，关闭环型防喷器，使油管和接箍强行通过环型防喷器胶芯。
Close the annular blowout preventer as the well pressure is relatively low and force oil pipes and couplings to pass through rubber core of the annular blowout preventer.
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