Matching Optimization of Hydraulic System Parameters of Common Rail Injector
The hydraulic system parameters of common rail injector have a great influence on hydraulic response process.The appropriate matching parameters can improve the response speed of fuel injector and improve the injection.In this paper,in order to analyze the relations of the key parameters of the electronic-controlled fuel injector,a DELPHI common rail system electronic-control injector is used as the research object.The models of the injector are created with AVL HYDSIM software,which include the models of leakage at control piston and needle component under the high-pressure conditions.The correctness and accuracy of the fluid numerical model are verified by the test of the injector rate of the common rail system in the 160MPa rail pressure.Nondimensional parameters are used to further analyze and research on the hydraulic response and their relationship between the matching,then the best range of parameters is found out.By orthogonal test,an integrated score was obtained for quantitative analysis that the factor of key structural parameters,and the various factors were optimized.
Common rail injectorHydraulic system parametersOrthogonal test, Matching
NETL
NSTL
万方数据
维普
