한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제18권2호
  • /
  • Pages.135-140
  • /
  • 2010
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

적층형 EGR Cooler의 Pitch 길이 변화가 열교환 특성에 미치는 영향

Effects of Pitch Length of Stack-type EGR Cooler on Heat Exchange Characteristics in a Diesel Engine

  • 황세준 (인제대학교 대학원 기계공학과) ;
  • 김민철 (인제대학교 대학원 기계공학과) ;
  • 장상훈 (인제대학교 대학원 기계공학과) ;
  • 김형만 (인제대학교 기계자동차공학부 & 고안전차량 핵심기술연구소)
  • Hwang, Se-Joon (Graduate School of Mechanical Engineering, Inje University) ;
  • Kim, Min-Chol (Graduate School of Mechanical Engineering, Inje University) ;
  • Jang, Sang-Hoon (Graduate School of Mechanical Engineering, Inje University) ;
  • Kim, Hyung-Man (School of Mechanical & Automotive Engineering & High Safety Vehicle Core Technology Research Center, Inje University)
  • 투고 : 2009.08.12
  • 심사 : 2009.11.04
  • 발행 : 2010.03.01
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초록

An important goal in diesel engine research is the development of a means to reduce the emissions of nitrogen oxides (NOX). The use of a cooled exhaust gas recirculation (EGR) system is one of the most effective techniques currently available for reducing nitrogen oxides. Since Particular Matter (PM) fouling reduces the efficiency of an EGR cooler, a trade-off exists between the amount of NOX and PM emissions, especially at high engine loads. In the present study, engine dynamometer experiments have been performed to investigate the heat exchange characteristics of the stack-type EGR coolers with wave fin pitches of 3.6 and 4.6 mm. The results show that the heat exchange effectiveness is decreased as surface area decrease with pitch of 4.6 mm due to PM fouling. As surface area increase at pitch of 3.6 mm, super-cooling happens in the recirculated exhaust gas.

키워드

참고문헌

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