摘要
针对某车用重型柴油机进行了二级增压系统匹配研究,根据产品开发目标要求选择了高、低二级增压器。采用GT-Power软件建立了二级增压柴油机仿真模型,并对柴油机外特性稳态工况性能进行了模拟计算,分析了二级增压系统能量分配对柴油机性能的影响规律。建立了二级增压柴油机测试平台,并进行了外特性、万有特性及排放特性试验。模拟及试验结果表明,二级增压系统可以大幅提高柴油机低速扭矩,改善燃油经济性,拓宽柴油机燃油经济性运行区域,大幅降低柴油机PM排放。
The matching of two-stage turbocharged system for a vehicle heavy-duty diesel engine was studied. Based on the requirements of product development, the high and low pressure stage turbocharger was selected. Using GT-Power software, the simulation model of two-stage turbocharged diesel engine was established, the full load conditions were simulated and calculated, and the influences of two-stage turbocharged energy distribution on diesel engine performance were analyzed. Finally, the test platform of two-stage turbocharged diesel engine was built and the experiments of external characteristic, universal characteristic and emission characteristic were carried out. The simulated and experimental results show that the two-stage turbocharged system can significantly increase the torque at low speed, improve the fuel economy, extend the operating area of fuel economy and greatly reduce the PM emission of diesel engine.
出处
《车用发动机》
北大核心
2013年第1期56-60,共5页
Vehicle Engine
基金
吉林省科技发展计划项目(20090542)
关键词
柴油机
二级增压
匹配
能量分配
性能
排放
diesel engine
two-stage turbocharging
matching
energy distribution
performance
emission
