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- 저자 : 최광춘(Kwang Chun Choi) (검색결과 2 건)
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수소와 일산화탄소를 이용한 멀티채널 CDPF의 재생특성에 관한 연구
최광춘(Kwang Chun Choi),전광민(Kwang Min Chun),송순호(Soonho Song) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Diesel particulate filter(DPF) systems are being used to reduce the particulate matter emission of diesel vehicles. The DPF should be regenerated after certain driving hours or distance to eliminate soot in the filter. The most widely used method is active regeneration with oxygen at 550~650℃. Syngas(synthetic gas) can be used to regenerate the Catalyzed DPF(CDPF). The syngas was made by CPOx(Catalyzed Partial Oxidation) at reformer, that of mainly helpful component at DPF regeneration is hydrogen and carbon-monoxide. We use the hydrogen and carbon-monoxide model gas for regeneration characteristic of filter regeneration. The oxidation characteristics of PM with model gas supplied to filter were studied using partial flow system that can control temperature and flow rate independently. The filter is coated with washcoat loading of 25g/ft³ Pt/Al₂O₃-CeO₂, and multi-channel CDPF(MC-CDPF) was used. The DPF regeneration experiments were performed to investigate the effect of syngas exothermic reaction on soot oxidation in the filter. Before oxidation experiment, PM was collected about 8g/L to the filter at engine condition of 1500rpm, bmep 8bar and flow temperature of 200℃. Various conditions of temperature and concentration of H₂, CO gas were used for the tests. Regeneration of soot in the filter started at 2% H₂ and CO concentration respectively and inlet temperature of 250℃. Filter Regeneration occurs more actively as the model gas concentration becomes higher.
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합성가스(Reforming gas)를 이용한 멀티채널 CDPF의 재생 특성 연구
최광춘(Kwang Chun Choi),정진화(Jinhwa Chung),송순호(Soonho Song),전광민(Kwang Min Chun) 한국자동차공학회 2011 한국 자동차공학회논문집 Vol.19 No.3
Diesel particulate filter (DPF) systems are being used to reduce the particulate matter emission of diesel vehicles. The DPF should be regenerated after certain driving hours or distance to eliminate soot in the filter. The most widely used method is active regeneration with oxygen at 550~650℃. Syngas (synthetic gas) can be used to lower the regeneration temperature of Catalyzed DPF (CDPF). The syngas is formed by fuel reforming process of CPOx (Catalytic Partial Oxidation) at specific engine condition (1500rpm, 2bar) using 1wt.% Rh/CeO₂-ZrO₂ catalyst. The oxidation characteristics of PM with syngas supplied to filter were studied using partial flow system that can control temperature and flow rate independently. The filter is coated with washcoat loading of 25g/ft³ Pt/Al₂O₃-CeO₂, and multi-channel CDPF (MC-CDPF) was used. The filter regeneration experiments were performed to investigate the effect of syngas exothermic reaction on soot oxidation in the filter. For this purpose, before oxidation experiment, PM was collected about 8g/L to the filter at engine condition of 1500rpm, bmep 8bar and flow temperature of 200℃. Various conditions of temperature and concentration of syngas were used for the tests. Regeneration of filter started at 2% H₂ and CO concentration respectively and inlet temperature of 260℃. Filter Regeneration occurs more actively as the syngas concentration becomes higher.
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