Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Thermal Structural Analysis of the Engine Turbocharger under the Transient Temperature History Corresponding to the Motoring Fatigue Test

모터링 내구시험을 상사한 비정상 온도이력을 받고 있는 엔진 터보차져의 열적 거동해석

  • Choi, Bok-Lok (School of Automotive and Mechanical Engineering, Gangneung-Wonju National University) ;
  • Bang, In-Wan (Powertrain Analysis Team, Hyundai Motor Company) ;
  • Chang, Hoon (Powertrain Analysis Team, Hyundai Motor Company)
  • 최복록 (강릉원주대학교 기계자동차공학부) ;
  • 방인완 (현대자동차 파워트레인해석팀) ;
  • 장훈 (현대자동차 파워트레인해석팀)
  • Received : 2011.04.21
  • Accepted : 2011.06.20
  • Published : 2011.11.01
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Abstract

Fatigue cracks of the turbocharger are often observed for high performance engines under thermal shock tests. Maximum exhaust gas temperature of recently developed gasoline engines could reach approximately $950^{\circ}C$. It's very important to estimate transient temperature histories during thermal shock cycles to predict the stress and the fatigue life of the turbocharger. With these temperature profiles, temperature-dependent material properties and boundary conditions, we could identify critical locations by the application of finite element simulation technologies. In this paper, we applied the reliable analysis approach to the actual turbocharger to predict the weak locations due to the repetitions of plastic strains and compared the results with the crack locations under physical engine test.

Keywords

References

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