Study on DOC auxiliary DPF regeneration method

被引：0
|
作者：
Zhang D. [1 ,2 ]
Li S. [1 ]
Li K. [2 ]
Bao X. [2 ]
Wang M. [2 ]
Qin H. [2 ]
机构：
[1] College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics
[2] Chinese Research Academy of Environment Sciences
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2010年 / 46卷 / 24期
关键词：
Diesel engine; Diesel oxidation catalyst; Diesel particulate filter; Regeneration;
D O I：
10.3901/JME.2010.24.107
中图分类号：
学科分类号：
摘要：
Diesel oil is injected into upriver vent-pipe of diesel oxidation catalyst (DOC) and mixed with the engine exhaust. The diesel oil is oxidized through the catalytic converter and gives out heat to improve the engine exhaust temperature, thus realizing the regeneration of diesel particulate filter(DPF). The whole system consists of fuel injector, oxidation catalytic converter and particulate filter. The regeneration characteristics of this system are researched on the engine bench, including the attainable temperature of exhaust after oxidation catalytic converter at different simulation vehicle speeds and different injection quantities; the temperature rise characteristics after catalytic converter during regeneration; the back pressure characteristics of particulate filter in regeneration process; and the analysis on the economy and secondary pollution of the regeneration method. The results show that when simulation speed is greater than 60 km/h, injection and regeneration can be carried out. The whole regeneration time is 330 s, the economy of the regeneration method is good, and the secondary pollutants are mainly HC and CO. © 2010 Journal of Mechanical Engineering.
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页码：107 / 110+117
相关论文
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