Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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An Analytical Study on Camshaft Locus at Camshaft Bearing in a Direct Acting OHC Valve Train System

직접 구동 OHC 밸브 트레인 캠 축의 운동 궤적 해석

  • Published : 1997.12.01
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Abstract

The camshaft locus at camshaft beating in a direct acting OHC valve train system has been investigated using the transient method. Forces applied to the camsfiaft are composed of two components, one is the transfer force between the cam and the tappet, the other is the frictional force. These forces have been calculated using the lumped mass model and the elastohydrodynamic lubrication theory. The alternating direction implicit method has been used for the numerical analysis of Reynolds equation, and 4th order Runge-Kutta method has been used for the transient journal locus analysis. The effects of various load conditions are presented in the form of journal locus. As a result of the analysis, it has been found that camshaft bearings were mainly in the hydrodynamic lubrication condition.

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References

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