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| Experimental Study on the Active Regeneration Performance of Catalytic Diesel Particle Filter on Idle Load |
| DOI：10.13949/j.cnki.nrjgc.2021.06.011 |
| Key Words:diesel diesel particulate filter（DPF） active regeneration regeneration efficiency |
| Author Name | Affiliation | | MENG Zhongwei, WANG Wei, JIANG Yuan, TAN Jie, CHEN Shiyao, MAO Jiawei | 1.Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China；2.Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, School of Automobile and Transportation, Xihua University, Chengdu 610039, China
3.Department of Intelligent Manufacturing, Neijiang Vocational and Technical College， Neijiang 641199, China
4.Chongqing CVS Environmental Protection Technology Co., Ltd., Chongqing 401122, China
5.Sichuan Institute of Product Quality Supervision & Inspection， Chengdu 610031, China |
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| Abstract:The active regeneration performance of catalytic diesel particle filter（CDPF） on idle load was investigated by retrofitting an exhaust pipe injection active regeneration system on the light-duty diesel engine bench. The experiment results show that the CDPF pressure drop is affected by space speed vsp, flow temperature and carbon loading. The higher the vsp and carbon loading, the greater the pressure drop gradient. The CDPF pressure drop is linearly related to the flow temperature. The effects of vsp and flow temperature needs to be taken into account during the carbon loading in practice. When the vsp value is fixed during active regeneration, the higher the flow temperature, the smaller the amount of fuel injected to reach the active regeneration target temperature(≥500℃). The CDPF inlet temperature change rate is 1.74℃/(mg·s-1)～2.20℃/(mg·s-1) which means the inlet temperature increases about 20℃ when fuel injection increases 10 mg/s. There is a rapid oxidation period for active regeneration on idle load, the particles burn violently, the CDPF outlet temperature rises rapidly, meanwhile, the CDPF pressure drop decreases significantly. It is beneficial to reduce the temperature difference between CDPF inlet and outlet by controlling the CDPF inlet temperature jagged rise, and the regeneration efficiency can reach 90.55%. |
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