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Thermal Deformation Analysis of Exhaust Manifold for Turbo Diesel Engine in Consideration of Flange Design

터보 디젤 엔진용 배기매니폴드의 열변형 해석

  • 김범근 (인제대학교 기계자동차공학부) ;
  • 이은현 (현대기아 연구개발본부 승용디젤엔지시험팀) ;
  • 최복록 (원주대학 자동차기계과)
  • Published : 2007.03.01

Abstract

Thermal deformation of cast iron exhaust manifold for turbo diesel engine is investigated by finite element analysis (FEA). The FE model included the temperature dependent material properties as well as the interactions between exhaust manifold, cylinder head and fasteners. It also considers the sliding behavior of the flanges of exhaust manifold on cylinder head when either expansion or contraction of the exhaust manifold exceeds the fastener pretension. The result of analysis revealed that remarkable thermal deformation along the longitudinal direction. Compressive plastic deformation at high temperature remained tensile stress in manifold and resulted in longitudinal contraction at ambient temperature. The amount of contraction at each fastener position was predicted and compared with experimental results. Analysis results revealed that the model predicted deformation qualitatively, but more elaborated cyclic hardening behavior would be necessary to predict the deformation quantitatively.

Keywords

Turbo Diesel Engine;Exhaust Manifold;Fea;Plastic Strain;Thermal Deformation

References

  1. Mamiya, N., Masuda, T. and Noda, Y., 2002, 'Thermal Fatigue Life of Exhaust Manifolds Predicted by Simulation,' SAE Technical Paper, #2002-01-0854
  2. Hoeschler, K., Bischof, J. and Koschel, W., 2002, 'Thermo-Mechanical Analysis of an Automotive Diesel Engine Exhaust Manifold,' Temperature-Fatigue Interaction SF2M, pp. 299-307 https://doi.org/10.1016/S1566-1369(02)80086-3
  3. Yoon, S., Lee, K. O., Lee, S. B. and Park, K. H., 2004, 'Thermal Stress and Fatigue Analysis of Exhaust Manifold,' Key engineering materials, Vol. 261/263, No. 2, pp. 1203-1208 https://doi.org/10.4028/www.scientific.net/KEM.261-263.1203
  4. Choi, B. L., Chang, H. and Park, K. H., 2004, 'Low Cycle Thermal Fatigue of the Engine Exhaust Manifold,' Internationals Journal of Automotive Technology, Vol. 5, No. 4, pp. 297-302
  5. Delprete, C. and Rosso, C., 2005, 'Exhaust Manifold Thermo-Structural Simulation Methodology,' SAE Technical Paper, #2005-01-1076

Cited by

  1. Design and Performance Evaluation of Integrated Exhaust Manifold vol.34, pp.7, 2010, https://doi.org/10.3795/KSME-A.2010.34.7.905