Evaluation of Structural Integrity and Heat Exchange Efficiency for Dimpled Tube Type EGR Cooler

딤플 튜브형 EGR Cooler 구조건전성 및 열효율 평가

  • 서영호 (부산대학교 항공우주공학과 대학원) ;
  • 이현민 (부산대학교 항공우주공학과 대학원) ;
  • 박중원 (부산대학교 항공우주공학과 대학원) ;
  • 구태완 (부산대학교 항공우주공학과) ;
  • 김정 (부산대학교 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Published : 2008.11.05

Abstract

Most of vehicle manufacturers have applied exhaust gas recirculation (EGR) system to the development of diesel engines in order to obtain the high thermal efficiency without $NO_X$ and Particulate Matter (PM) emitted from the engine. EGR system, which reflow a cooled exhaust gas from vehicles burning diesel as fuel to a combustion chamber of engine, has been used to solve this problem. In order to confirm the safety of the EGR system, finite element analysis was carried out. The safety of EGR system against temperature variation in the shell and tubes was evaluated through the thermal and structural analysis, and the modal analysis using ANSYS was also performed. Finally, the performance of EGR system was verified through the experiment and numerical simulation using effectiveness-NTU method. Program for the estimation of the heat exchange efficiency of the EGR system with regard to the dimpled tube shape was developed.

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