Single channel simulation of soot oxidation regeneration in DPF

被引：0
|
作者：
Guo G. [1 ,2 ]
Yu J. [1 ,2 ]
Fang L. [1 ,2 ]
Wang W. [1 ,2 ]
机构：
[1] Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan
[2] Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2022年 / 50卷 / 01期
关键词：
Diesel particulate filter; Intake air flow rate; Intake air temperature; Model optimization; Single channel model; Soot distribution;
D O I：
10.13245/j.hust.220109
中图分类号：
学科分类号：
摘要：
Based on the experiment of soot oxidation with La0.7Sr0.3CoO3 perovskite catalyst, a two-dimensional diesel particulate filter (DPF) single channel model was established by using COMSOL Multiphysics software, and the experimental model was assumed and simplified reasonably. The effects of inlet flow rate and inlet temperature on soot oxidation were analyzed, and the model verification was carried out. It is concluded that when the inlet flow rate is 1.5 m/s and the inlet temperature is 881 K, the temperature in the DPF channel reaches a peak of 1 010 K. Both inlet flow rate and inlet temperature would affect soot deposition and reaction. With the increase of inlet flow rate, soot oxidation slows down and soot deposition is intensified. With the increase of inlet temperature, the oxidation reaction of soot is accelerated, the deposition of soot is reduced, and the ignition time of soot is shortened. © 2022, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
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页码：50 / 55
页数：5
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