柴油机后处理DPF堵塞故障仿真与优化研究  

Simulation and Optimization of DPF Blocking Fault with GT-Power

作　　者：李振 姚广涛 伍恒[3] 张卫峰 王继佳 LI Zhen;YAO Guang-tao;WU Heng;ZHANG Wei-feng;WANG Ji-jia(Postgraduate Training Brigade,Army Military Transportation University,Tianjin 300161,China;Military Vehicle Department,Army Military Transportation University,Tianjin 300161,China;Department of Aircraft Engineering,Naval Aeronautical Engineering Institute,Yantai 264001,China)

机构地区：[1]陆军军事交通学院研究生队,天津300161 [2]陆军军事交通学院军用车辆系,天津300161 [3]海军航空工程学院飞行器工程系,烟台264001

出　　处：《内燃机与配件》2018年第21期5-8,共4页Internal Combustion Engine & Parts

摘　　要：通过调节过滤体的渗透率来反映不同的微颗粒物(particulate matter, PM)过滤效率,模拟柴油机颗粒物过滤器(DPF)不同的堵塞程度,进而建立了基于GT软件的DPF堵塞故障仿真模型。利用仿真模型测得排气温度、排气压差等主要特征参数,再以排气阻力试验结果与仿真结果进行验证与优化,最后依据发动机台架试验采集的故障主要特征参数,进一步验证优化后模型的正确性。仿真得出结论:利用GT软件建立堵塞仿真模型来提取排气背压,排气温度等主要特征参数是较好的、理想的。By adjusting the permeability of filter to express different PM filtration efficiency and simulating the different blocking degree of diesel particulate filter（DPF） in this way, a simulation model of DPF jamming fault based on GT software was established. The main characteristic parameters such as exhaust temperature and exhaust pressure difference are measured by the simulation model. Then,the simulation results are verified and optimized by the results of the exhaust resistance test. Finally, according to the main characteristic parameters of the fault collected by the engine bench test, the correctness of the model are verified again. The simulation results make conclusions that the main feature parameters measured such as exhaust back pressure and exhaust temperature are accurate and reliable by using GT software to establish blocking simulation model.

关 键 词：柴油机 颗粒物过滤器 堵塞故障 仿真 优化 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]