大功率柴油机双段喷射的仿真  

Simulation on two-stage injection of a heavy-duty diesel engine

作　　者：李明海[1] 侯春林[1] 贾先喆[2] 

机构地区：[1]大连交通大学交通运输学院,大连116028 [2]清华大学汽车工程系,北京100084

出　　处：《汽车安全与节能学报》2010年第3期247-252,共6页Journal of Automotive Safety and Energy

基　　金：汽车安全与节能国家重点实验室开放基金项目(KF10182)

摘　　要：利用GT-Power软件,建立了16V280ZJ型柴油机电子喷射系统的整机模型。对直喷柴油机典型的双段喷射方案进行燃烧过程仿真计算。16V280ZJ型柴油机是中国铁路干线内燃机车的动力装置。通过与试验结果的对比,对计算过程参数进行了修正,计算结果有效反映出了两次喷射脉冲的油量分配比例和喷射脉冲间隔角对排放特性及燃油经济性的影响规律。最后以改善柴油机排放和降低压力升高率为目标,总结出了双段喷射模式下的喷油规律优化方案。An engine cycle simulation model of 16V280ZJ diesel engine with an electronic injection system was established using the software GT-Power.The engine is the power unit of Chinese main railway diesel locomotives.A series of combustion cases of the heavy-duty direct injection（DI） diesel engine were calculated based on typical split injection modes.Simulation parameters are modified based on the comparison with given experimental results.Calculation results effectively demonstrated the effects of different injection velocity,fuel distribution and pulse interval on heat release rate.The injection optimization under multi-injection mode was proposed to lower the emissions and the pressure rise gradient.

关 键 词：柴油机 多段喷射 仿真 优化 

分 类 号：U262.11[机械工程—车辆工程]