Research on injector optimization of extended-range new energy vehicle based on PISO algorithm
Through the three-dimensional numerical simulation software Converge combined with PISO algorithm,for the heavy direct injection diesel engine,the influence of different hole diameter,hole depth and injection angle of the injector on the combustion and emission performance of the engine is studied,and the injector parameter setting scheme for the best thermal efficiency of the diesel engine is obtained.The results show that the change of nozzle hole diameter has a greater influence on the thermal efficiency of the engine,and can effectively improve the NOx and soot emissions of the engine,compared with the nozzle hole depth and nozzle hole inclination angle.When the nozzle diameter is 0.179 mm,0.219 mm and 0.259 mm,the increase reached respectively to 1.4%,3.4%and 2.8%,and the thermal efficiency is improved significantly.
diesel direct injectionConvergePISO algorithmfuel injectorthermal efficiencycombustion and emission
万方数据
维普
