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通过对高速柴油机喷油系统的研究,证实了柴油机高压油管内压力波传播速度在有空穴的情况下比正常值有明显的降低,作者认为,这种现象可以用两相介质的音速理论来加以说明.为此,本文在综述国外研究情况的基础上,导出了计算气、液两相介质在各种压力与温度下音速的公式,并首次给出了计算空气-柴油两相介质音速的诺模图。
Through the research on the high-speed diesel engine fuel injection system, it is confirmed that the pressure wave propagation velocity in the high-pressure oil pipe of diesel engine is significantly lower than the normal value in the case of holes. According to the author, this phenomenon can be described by the theory of sound velocity in two- To sum up, based on the review of foreign research, this paper derives a formula to calculate the sonic velocity of gas-liquid two-phase medium at various pressures and temperatures, and for the first time gives the calculation of the sound velocity of two-phase air- Norm diagram.