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.

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。

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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.

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。

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