Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Study on the Dynamic Behaviors of Engine Bearing with the Inertia Effect of Crank Pin Journal

크랭크 핀의 질량관성을 고려한 엔진 베어링의 틈새 거동 연구

  • Jang Siyoul (School of Mechanical and Automotive Engineering, Kookmin University)
  • 장시열 (국민대학교 기계자동차공학부)
  • Published : 2005.02.01
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Abstract

Investigation of the mass effect on the journal traces in the clearance of engine bearing has been performed for better design of mass distribution of crank system components such as crank pin, piston, con-rod, balance weight, crank throw weight, etc. as well as for better oil reaction behaviors to the applied forces from the cylinder pressures on the bearing. In this preliminary study, crank pin traces in the engine bearing clearance are computed by varying the equivalent magnitude of crank pin mass that includes the masses of crank pin, piston, con-rod. etc.. while most previous studies regarding journal traces in the bearing clearance neglect the inertia effects of crank pin mass. Although the inertia effect of pill mass is negligibly small compared to viscous force by ${\pi}bearing$ theory, it is found that it gives a great amount of influences on the journal traces in full bearing computation $(2\pi\;bearing\;theory)$ under the dynamic loading conditions.

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References

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