The machining project of control cavity was set down based on the orthogonal test method, and the influence of control hole A and B on the hydraulic response of injector was tested.
The test result shows that by using bigger dimension difference of control hole A and B and high common-rail pressure the better open response of injector can be achieved.
试验结果表明较大的A、B量孔尺寸差值和高的共轨压力，可以获得较好的喷油器开启响应特性。
3
In this paper, the influence of flow coefficient of injectorhole, hole diameter and needle lift on emission is studied through contrast experiment of different injectors.