Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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A Study on Effects of the Changes in Lower Combustion Pressures and Pressure-Viscosity Index on Pin-Boss Bearing Lubrication of a Diesel Engine Piston Receiving High Combustion Pressure

연소실 저압변화와 압력-점도지수가 디젤엔진 고압피스톤의 핀-보스 베어링 윤활에 미치는 영향 연구

  • 전상명 (호서대학교 자동차공학과)
  • Published : 2008.04.30
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Abstract

In recently designed diesel engines, the running conditions for piston pin bearings have become very severe due to combustion pressure and temperature increase. In this paper, it will be investigated the tendency of piston pin rotating motion by calculating the friction coefficient at piston pin bearings, the oil film thickness and the frictional torques induced by hydrodynamic shear stress. Finally, the pressure distributions on the oil film of piston pin bearings will be found by two-dimensional lubrication analysis in order to help the optimum design of the bearings of piston pin. Specially, it is investigated how the changes in combustion pressure at exhaust and intake stroke and the pressure-viscosity index effect on the film pressure distribution.

Keywords

References

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Cited by

  1. 회전체 동역학 및 트라이볼로지 요소의 연구동향 vol.12, pp.1, 2009, https://doi.org/10.5293/kfma.2009.12.1.076