커먼레일 인젝터의 분사특성 해석을 이용한 HSDI 디젤엔진의 연소해석

To enhance the accuracy of the engine combustion analysis in a Diesel engine the understanding of the injection characteristics is very important In this study, the l-D hydraulic Simulation code of HYDSIM was applied to investigate the injection rate, timing and duration In the Common. Rail high pressure injector, and the analyzed injection quantity was compared with that of experiment for the model validation With the results as initial boundary conditions the mixture formation, combustion and pollutants formation processes were predicted in a combustion chamber of HSDI engine. The analyzed cylinder pressure were compared with the experimental data for verifying the analysis The combustion processes and pollutant formations are analyzed, and BSFC is predicted. The results agree well with the experimental data.