Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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EHL Analysis of Connecting Rod Bearings Considering Effects of Temperature Variation

온도 변화의 영향을 고려한 커넥팅 로드 베어링의 EHL 해석

  • 김병직 (LG전자 디지털 어플라이언스 연구소) ;
  • 김경웅 (한국과학기술원 기계공학과)
  • Published : 2001.06.01
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Abstract

EHL analysis of connecting rod bearing is proposed which includes effects of temperature variation in lubrication film. Lubrication film temperature is treated as a time-dependent, two-dimensional variable which is averaged over the film thickness, while connecting rod big end temperature is assumed to be time-independent and three-dimensional. It is assumed that a portion of the heat generated by viscous dissipation in the lubrication film is absorbed by the film itself, and the remainder flows into the bearing surface. Mass-conserving cavitation algorithm is applied and the effect of variable viscosity is included to solve the Reynolds equation. Simulation results of the connecting rod bearing in internal combustion engine are presented. It is shown that the temperature variation has remarkable effects on the bearing performance. It is concluded that the EHL analysis considering effects of the temperature variation is strongly recommended to predict the connecting rod bearing performance in internal combustion engine.

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References

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