传统的柴油机喷油器针阀升程测量方式多为接触式。
Traditionally, the way to measure the needle displacement of oil injector is of contact pattern.
汽车经长时间使用后，喷油器针阀表面会形成少量积碳，影响其喷油质量。
After the motor vehicle is used for a long time, a little carbon deposit is formed in the needle valve surface of fuel injector and the fuel injection quality will be affected.
本文通过对柴油机配置不同喷油器所进行的排放对比试验，研究分析了喷油器喷孔流量系数、喷孔直径、针阀升程对排放的影响。
In this paper, the influence of flow coefficient of injector hole, hole diameter and needle lift on emission is studied through contrast experiment of different injectors.
结果表明：节流孔板是电控共轨喷油器的重要构成部分，既控制着唢油嘴针阀的开启速度，义控制着喷油率的形状。
The results show that, as important components of electronic injector used in common rail system, orifices affect on the open rate of nozzle needle and injection rate shapes.
介绍了具有油束撞击效应的轴针式喷油器在不同柴油机燃烧系统中的应用。
This paper reports experimental results of the mixture formed by Pintle nozzle with impinging head used to diesel engines with different combustion systems.
经理论分析和计算发现，短针阀喷油器可以进一步降低针阀对密封座面的冲击应力。
By theoretical analysing and calculating, we find the short needle valve fuel injector can further decrease the impact stress of the needle valve to the sealed conical surface.
经理论分析和计算发现，短针阀喷油器可以进一步降低针阀对密封座面的冲击应力。
By theoretical analysing and calculating, we find the short needle valve fuel injector can further decrease the impact stress of the needle valve to the sealed conical surface.
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