한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제19권5호
  • /
  • Pages.76-81
  • /
  • 2011
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

EGR Cooler Fouling 저감을 위한 촉매 장착 EGR Cooler System 평가

Evaluation of Catalyst Assisted EGR Cooler System for EGR Cooler Fouling Reduction

  • 홍광석 (연세대학교 대학원 기계공학과) ;
  • 박정수 (연세대학교 대학원 기계공학과) ;
  • 이교승 (경기과학기술대학교 자동차과)
  • Hong, Kwang-Seok (Department of Mechanical Engineering, Graduate School, Yonsei University) ;
  • Park, Jung-Soo (Department of Mechanical Engineering, Graduate School, Yonsei University) ;
  • Lee, Kyo-Seung (Department of Automotive Engineering, Gyeonggi College of Science and Technology)
  • 투고 : 2010.12.31
  • 심사 : 2011.04.01
  • 발행 : 2011.09.01
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초록

Exhaust gas recirculation is the well-known and widely used NOx reduction technology for diesel engines. More effective EGR cooler has been developed and applied to diesel engines to meet the reinforced emission regulation. However, the contaminated EGR cooler by diesel exhaust gas reduces the performance of the engine and NOx reduction rate. The buildup of deposits in EGR coolers cause significant degradation in heat transfer performance, often on the order of 20~30%. Deposits also increase pressure drop across coolers and thus may degrade engine efficiency under some operation conditions. In this study, as a solution for this problem, DOC assisted EGR cooler is designed and then investigated to reduce fouling and its impact on cooler performance. A single channel EGR cooler fouling test apparatus and soot particle generator were developed to represent the real EGR cooler and exhaust gas of diesel engine. EGR cooler effectiveness of the case with catalyst of pt 30g/ft3 decreased just up to 5%. This value was 45% less compared to the case without catalyst which decreased up to 9% after 10hours experiments.

키워드

참고문헌

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