高压油管中燃油压力波传递速度的研究

本文介绍了柴油机高压油管中燃油压力波的物理概念,并在高压喷射条件下对高压油管中燃油压力波的传递速度(即当地音速)进行了实验测定.结果表明,高压油管中燃油具有两相性,其压力波速度明显低于单相液质中的数值,这对喷射系统的理论研究和应用实践均有实际意义.

A Study of the Propagation Velocity of Pressure Wave in Fuel Pipe

The physical concept of pressure wave in the fuel pipe is presented in this paper,and on a test rig the propagation velosity of pressure wave is measured at the injection.Experimental results show that the propagation velocity of pre-ssure wave in fuel pipe is evidently lower than the nomal value.A general con-clusion has been reached and it is applicable to the theoretical investigation and the applied practice in a injection system.