摘要
基于涡轮通流模型,建立两级增压通流仿真平台,探讨了两级涡轮几何参数的改变对发动机性能的影响规律及原因,采用该平台对某车用两级增压柴油机进行仿真研究,并完成两级涡轮新的匹配设计。匹配结果表明,通过合理设计两级涡轮几何参数,可使该发动机低速扭矩提高7.4%,燃油消耗率降低6.9%。
Based on turbine through-flow model, the platform of two-stage turbocharging through-flow simulation was established and the influences of two-stage turbine geometry parameters on engine performance were discussed. Based on the platform, a vehicle two-stage turbocharging diesel engine was simulated and the match design of the two-stage turbine was completed. The simulation results show that the appropriate geometry parameters of two-stage turbocharger can make the low-speed torque increase by 7.4% and fuel consumption decrease by 6.9%.
出处
《车用发动机》
北大核心
2011年第6期33-37,共5页
Vehicle Engine
关键词
涡轮增压
两级增压
涡轮通流模型
几何参数
性能
匹配
turbocharging
two-stage turbocharging
turbine through-flow model
geometry parameter
performance
match
