Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Pin-Boss Bearing Lubrication Analysis of a Diesel Engine Piston Receiving High Combustion Pressure

고 연소압을 받는 디젤엔진 피스톤의 핀-보스 베어링 윤활해석

  • Chun, Sang-Myung (Dept. of Automotive Engineering, Hoseo University) ;
  • Ha, Dae-Hong (Dept. of Aero-Mechanical Engineering, Hanseo University)
  • 전상명 (호서대학교 자동차공학과) ;
  • 하대홍 (한서대학교 항공기계공학과)
  • Published : 2008.06.30
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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 the effects on the film pressure distribution due to the change in maximum combustion pressure.

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References

  1. Y. Mihara and T. Someya, "A Study on the Measurement of Oil-film Pressure in Engine Connecting Rod Bearing and Piston Pin-Boss by Thin-film Sensor", ASIATRIB 2002 International Conference, Jeju Island, Korea, Oct. 21-24, pp. 409-410, 2002
  2. Y. Mihara, K. Sekine and T. Someya, "Study on the Development of a Thin-film Sensor for Measuring Oil-film Pressure in Engine Bearing and Piston Pinboss", Tribology Series(Leeds), Amsterdam; Boston; Elsevier, pp. 391-402, 2003 https://doi.org/10.1016/S0167-8922(03)80152-9
  3. T. Someya and Y. Mihara, "Engine Tribology by Means of New Thin-Film Sensors", KSTLE 2005 Automotive Tribology International Symposium and 40th Spring Conference, Kwangju, Chosun Univ., June 16-17, Vol. 1, pp. 3-23, 2005
  4. J. L. Ligier and P. Ragot, "Piston Pin: Wear and Rotating Motion", SAE International, SAE 2005-01- 1651 (SP-1964), pp. 760-768, 2005
  5. S. M. Chun, "Study on the Rotating Motion of a Piston Pin of Full Floating Type", J. of the KSTLE, Vol. 23, No. 3, pp. 95-102, 2007
  6. Smalley AJ, McCallion H. The effect of Journal Misalignment on Performance of a Journal Bearing under Steady Running Conditions. Proc Inst Mech Engrs(Part 3B) 1966-1967 ;181:45-54
  7. P. C. Warner, "Static and Dynamic Properties of Partial Journal Bearings", J. of Basic Engineering, Trans. ASME, Series D, Vol. 85, 1963, p. 247, 1963 https://doi.org/10.1115/1.3656569
  8. J. F. Booker, "Dynamically Loaded Journal Bearing; Mobility Method of Solution", J. of Basic Engineering,Trans. ASME, Series D, Vol. 87, pp. 537-546, 1965 https://doi.org/10.1115/1.3650602