The Rupe number and the ratio of injection orifice diameter are two key parameters affecting unlike impinging injector performance, and they are closely interrelated.
对于直流互击式喷注器，鲁泊数和孔径比是影响喷注器性能的两个关键参数，而且两者之间有一定关联。
In this simulating procedure the measured value of pressure wave from the inlet of injector is used as major input data for prediction of performance.
本模拟过程中利用喷油器进口处的压力波实测值作为性能预测的主要输入数据。
To design a high performance injector and to improve engine impulse performance are the permanent goals of engine designers.
设计高性能喷注器、提高发动机比冲性能是发动机设计者一直追求的目标。
The fuel injection process plays an important role on combustion. It has important influence on diesel engine performance and emission. And injector is the key factor of affecting injection process.
喷油过程是影响柴油机燃烧过程的重要组成部分，对柴油机的排放与性能具有重要的影响，而喷油器是影响喷油过程的关键因素。
On one hand the test and evaluation can feedback the structural design of the syringe, optimize the result of design, and improve the integral performance of the needle-free injector;
一方面测试评价可以反馈注射器结构设计，优化设计结果，提高无针注射器整体性能；
The results suggest that the injector outlet expanding can improve atomization performance;
研究表明：喷嘴出口扩张时可以改善喷嘴的雾化性能；
The atomization mechanism of the new type injector is analyzed and the atomization performance is decided. The experimental formula of atomization diameters is obtained by analyzing experimental data.
进而分析了该型喷嘴的雾化机理和雾化特性，给出雾化粒径经验关系式。
The atomization mechanism of the new type injector is analyzed and the atomization performance is decided. The experimental formula of atomization diameters is obtained by analyzing experimental data.
进而分析了该型喷嘴的雾化机理和雾化特性，给出雾化粒径经验关系式。
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