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논문 상세정보

배기가스의 온도 및 HC와 $O_2$의 조성 변화에 따른 DOC-CDPF의 재생 특성에 관한 실험적 연구

An Experimental Study on Regeneration Characteristics by Variation of Exhaust Gas Temperature, HC and $O_2$ Concentrations on DOC-CDPF System


A catalyzed diesel particulate filter (CDPF) causes the progressive increase in back pressure of an exhaust system due to the loading of soot particles. To minimize pressure drop which is generated by CDPF, the filter should be regenerated when it collects a certain quantity of soot. It is important to know characteristics of regeneration of CDPF with various of exhaust gas temperatures and compositions. The oxidation of HC in DOC leads to increase gas temperature of DOC downstream. The increased gas temperature by DOC has an positive effect on CDPF regeneration. This study presents characteristics of regeneration of CDPF with DOC according to various gas composition, such as HC and $O_2$ concentration. The test-rig is used to control each gas composition and temperature during regeneration of CDPF. Experimental results indicate that the increased concentration of $O_2$ regenerates DPF more actively. With increasing HC concentration, the gas temperature of CDPF upstream increased due to more oxidation of HC. But excessive supply of HC leads to decrease of $O_2$ concentration in the CDPF, which makes it hard to regenerate CDPF.

참고문헌 (10)

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이 논문을 인용한 문헌 (1)

  1. Kim, Tae-Kwon ; Kim, Young-Jo ; Ha, Ji-Soo ; Lee, Chun-Beom ; Oh, Kwang-Chul 2011. "An Experimental Study on Filtration Efficiency and BPT Characteristics by Soot Loading in Partial-diesel Particulate Filter" 한국자동차공학회논문집 = Transactions of the Korean Society of Automotive Engineers, 19(6): 10~16 

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