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디젤입자상물질필터의 기하학적 형상변화가 재생과정 중 활성화 특성 및 비정상 온도거동에 미치는 영향에 관한 수치적 연구

Title
디젤입자상물질필터의 기하학적 형상변화가 재생과정 중 활성화 특성 및 비정상 온도거동에 미치는 영향에 관한 수치적 연구
Other Titles
Numerical Study on the Effect of Changes of Geometric Shape of Diesel Particulate Filter on Light-Off Characteristics and Transient Thermal Behavior during Regeneration
Author
김우승
Keywords
DPF(디젤입자상물질필터); Regeneration(재생); Soot(탄소미립자); Light-Off(활성화)
Issue Date
2006-07
Publisher
한국자동차공학회
Citation
한국자동차공학회논문집, v. 14, No. 4, Page. 68 - 76
Abstract
The minimization of maximum DPF wall temperature and the fast Light-off during regeneration are the targets for the high durability of the DPF system and the high efficiency of regeneration. In order to predict transient thermal response of DPF, one-channel numerical modeling has been adopted. The effect of the ratio of length to diameter (L/D), cell density, the amount of soot loading on temporal thermal response and regeneration characteristics has been numerically investigated under two different running conditions: city driving mode and high speed mode. The results indicate that the maximum wall temperature of DPF increase with increasing ‘L/D’ in ‘High speed mode’. For ‘City driving mode’, the maximum wall temperature decreases with increasing ‘L/D’ in the range of ‘L/D≥0.6'. The maximum temperature decreases with increasing cell density because heat conduction and heat capacity are increased. It is also found that the effect of amount of soot loading on light-off time is negligible.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00719882&language=ko_KRhttp://repository.hanyang.ac.kr/handle/20.500.11754/108955
ISSN
1225-6382
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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