通过数值模拟方法 ,发现高压共轨式喷油器针阀液压控制腔的液力过程和作用在针阀上液压力的相互关系 ,对喷油器的时间响应特性、喷油器供油规律和供油量具有重要影响。在喷油器制造中将表现为喷油定时和喷油量的不一致性。值得指出的是 ,这种不一致性是无法通过控制软件进行修正的 Through the numerical simulation method, it is found that the hydraulic process of the hydraulic pressure control chamber of needle valve of high-pressure common rail injector and the relationship between the hydraulic pressure acting on the needle valve, the time response characteristics of the injector, the fuel supply rule of the injector and Fuel supply has a significant impact. In the manufacture of injectors will show the injection timing and fuel injection inconsistencies. It is worth noting that this inconsistency can not be corrected by the control software