FLOW CHARACTERISTICS OF WALLFLOW DIESEL PARTICULATE FILTER SYSTEM WITH REVERSE PULSE AIR REGENERATION  

作　　者：Yao Chunde Shao Yuping Zhang Chunrun Zi XinYun Jiang Dahai Deng Chenglin 

机构地区：[1]State Key Laboratory of Engine Combustion, Tianjin University, Tianjin 300072, China [2]Department of Automotive Engineering, Military Traffic Institute, Tianjin 300161, China

出　　处：《Chinese Journal of Mechanical Engineering》2005年第3期439-441,共3页中国机械工程学报（英文版）

基　　金：This project is supported by National Hi-tech Research and DevelopmentProgram of China (863 Program, No.2003AA643010B).

摘　　要：To simulate steady airflows inside of wall-flow diesel particulate filters （DPF） with different reverse blowing pipes collocation, a mathematical model of the flow in a DPF is established by an equivalent continuum approach. The experimental results agree well with the theoretical values calculated from the model. Simulation shows that the velocity and the pressure distribution of the filters in the regenerative process are key factors to the filter＇s regeneration. How to decrease the mal-distribution of the flow in the filter and how to achieve the better regenerative performance at the least cost of air consumption in the regenerative process are the ultimate goals of the study. Calculation and experiments show that the goals can be realized through adjusting the angle of two reverse blowing pipes and their relative location suitably.To simulate steady airflows inside of wall-flow diesel particulate filters （DPF） with different reverse blowing pipes collocation, a mathematical model of the flow in a DPF is established by an equivalent continuum approach. The experimental results agree well with the theoretical values calculated from the model. Simulation shows that the velocity and the pressure distribution of the filters in the regenerative process are key factors to the filter＇s regeneration. How to decrease the mal-distribution of the flow in the filter and how to achieve the better regenerative performance at the least cost of air consumption in the regenerative process are the ultimate goals of the study. Calculation and experiments show that the goals can be realized through adjusting the angle of two reverse blowing pipes and their relative location suitably.

关 键 词：Wall-flow filter Reverse pulse air regeneration Flow characteristic Simulation 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]