Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Effects of Warm-up Performance on SI Engine with Exhaust Heat Recovery System

배기열 회수장치 적용에 따른 SI 엔진의 웜업 성능에 미치는 영향

  • Park, Kyoun-Suk (Department of Mechanical Engineering, Kyunghee University) ;
  • Suh, Ho-Cheol (R&D Center, Sejong Industrial Co. Ltd.) ;
  • Park, Sun-Hong (Department of Mechanical Engineering, Graduate School, Kyunghee University) ;
  • Kim, In-Tae (Department of Mechanical Engineering, Graduate School, Kyunghee University) ;
  • Jang, Sung-Wook (R&D Center, Sejong Industrial Co. Ltd.)
  • 박경석 (경희대학교 기계공학과) ;
  • 서호철 (세종공업(주) 기술연구소) ;
  • 박선홍 (경희대학교 대학원 기계공학과) ;
  • 김인태 (경희대학교 대학원 기계공학과) ;
  • 장성욱 (세종공업(주) 기술연구소)
  • Received : 2011.01.05
  • Accepted : 2011.06.15
  • Published : 2011.11.01
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Abstract

The effect of exhaust heat recovery system can be evaluated by two well known method. First method is to measure the time duration from engine start under cold coolant temperature till coolant get warmed. By this methodology coolant warming duration can be index of warm-up effect. Second method is to analyze heat balance of the engine during warm-up phase under steady engine operation so that wasted energy by losses such as cooling and exhaust can be index of warm-up effect. This study focused on evaluation of warming-up effect by both methodology above mentioned using 2L SI engine under from idle to 2000rpm steady condition. Results, idle operation showed low heat recovery efficiency but under higher engine speed condition, remarkable heat recovery efficiency improvement was observed. In 2000rpm steady condition, warm-up duration of engine is decreased by exhaust heat recovery system.

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References

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