Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Performance Design of Aluminum EGR Cooler Consisting of Extruded Tubes for LPL EGR System

LPL EGR 시스템용 압출 튜브 구조의 알루미늄 EGR 쿨러 성능 설계

  • Heo, Hyungseok (Energy System R&D Center, Korea Automotive Technology Institute) ;
  • Bae, Sukjung (Energy System R&D Center, Korea Automotive Technology Institute) ;
  • Kang, Taegu (Energy System R&D Center, Korea Automotive Technology Institute) ;
  • Lee, Junyong (Energy System R&D Center, Korea Automotive Technology Institute) ;
  • Seo, Hyeongjun (R&D Center, Sambomotors)
  • 허형석 (자동차부품연구원 에너지부품연구센터) ;
  • 배석정 (자동차부품연구원 에너지부품연구센터) ;
  • 강태구 (자동차부품연구원 에너지부품연구센터) ;
  • 이준용 (자동차부품연구원 에너지부품연구센터) ;
  • 서형준 (삼보모터스 기술연구소)
  • Received : 2016.10.10
  • Accepted : 2016.11.01
  • Published : 2017.01.01
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Abstract

A study has been conducted to develop an aluminum EGR cooler for the LPL EGR system of a diesel engine. Aluminum has a much lower density and thermal conductivity that is about 12 times or more than that of stainless steel, so it is advantageous for use in an EGR cooler for weight reduction and cooling performance effects. A design process has been carried out to ensure heat dissipation performance in a restricted space to investigate the geometric parameters and satisfy the requirements for pressure drops at both fluid sides. The tubes of exhaust gas have been designed as extruded tubes. An aluminum EGR cooler consisting of extruded tubes entails a simpler manufacturing process compared to a stainless steel EGR cooler with conventional heat transfer fins. A prototype has been manufactured from the final model selected through the design process. The performance of the aluminum EGR cooler was evaluated and compared with that of the conventional one. The weight of the aluminum EGR cooler is reduced by 22.9%, while performance is significantly improved.

Keywords

References

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