Study of Response Characteristics of the Electronic-control Injector
The hydraulic pressure system of common rail injector is modeled as a volume system linked by pipes and calibrating holes. Author educes one-dimensional, variable sound velocity, variable density and variable viscosity fluid dynamics equations to describe fuel flow process in long pipes, and uses finite volume method to resolve the control equations. Then founded the numerical models of electronic-control injector according to the structure of fuel injection system, and specified the numerical models as fluid model boundary. A DELPHI common rail system electronic-control injector is used as the research object. The models of the injector are created with AVL HYDSIM, the base of investigation is the test of the injector rule of the common rail system in the 160MPa rail pressure. The models are validated by test results. The affects of key construction parameters on its response characteristics is investigated, by the simulation model, that is the valid area of inlet and outlet throttle hole (Aa and Ab), the cross section of control plunger (Ac) and the cross section of needle guide (Ag). The determination principle of key construction parameters is also discussed aiming at the improvement of its response characteristics. By the analysis and simulating calculation, the theory base is been provided for the selection and design of structure parameters on the Electronic-control Injector.
electronic-control injector response characteristics simulating calculation
MA Fukang YOU Guodong MA Yujie
Dept.of Vehicle and Power Engineering, North University of China, Taiyuan, Shanxi, China, 030051
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
2578-2581
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）