KSTLE International Journal

한국트라이볼로지학회 (Korean Tribology Society)
권호 표지

Friction Characteristics of piston Skirt Parametric Investigation

  • Cho, Myung-Rae (Power Train R&D Center) ;
  • Kim, Jee-Woon (Graduate School, School of Aerospace and Mechanical Engineering, Seoul National University) ;
  • Moon, Tae-Sun (Graduate School, School of Aerospace and Mechanical Engineering, Seoul National University) ;
  • Han, Dong-Chul (Prosessor, School, School of Aerospace and Mechanical Engineering, Seoul National University)
  • 발행 : 2002.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The purpose of this paper is to investigate the effects of design parameters on the friction loss in piston skirt. An analytical model to describe the friction characteristics of piston skirt has been presented, which is based on the secondary motion of piston and mixed lubrication theory, It could be shown that the skirt friction closely depends on the side force acted on the piston pin. The side force is inf1uenced by cylinder pressure at low engine speed, but by inertia force at high engine speed. The usage of extensive skirt area and low weight piston is effective to reduce the friction loss at high speed. The low viscosity oil considerably decreases viscous friction as engine speed increases, but it increases boundary friction at low engine speed. From the parametric study, it is found that the skirt axial profile is the most important design parameter related to the reduction of skirt friction.

키워드

참고문헌

  1. Kim, W. Q., Seo, S. H., Kang, K. P. and Oh, D. Y.,'Development of low viscosity engine oil,' Technical report in Hyundai Motors, 2001
  2. Hu, Y, Cheng, H. S., Arai, T., Kobayashi, Y. and Ayoma, S., 'Numerical Simulation of Piston Ring in Mixed Lubrication A Nonaxisymmetrical Analysis,' Trans. ASME, J. Tribology, 116, pp. 470-478, 1994 https://doi.org/10.1115/1.2928867
  3. Li, D. F., Rhode, S. M. and Ezzat, H. A., 'An automotive piston lubrication model,' ASLE Trans., 26, pp. 151-160, 1983 https://doi.org/10.1080/05698198308981489
  4. Oh, K. R, Li, C. H. and Goenka, P. K., 'Elastohydrodynamic Lubrication of Piston Skirts,' Trans. ASME J. of Tribology, 109, pp. 356-362, 1987 https://doi.org/10.1115/1.3261366
  5. Dursunkaya, Z., Keribar, R. and Ganapathy V., 'A Model of Piston Secondary Motion and Elastohydrodynamic SkirtLubrication,' Trans. ASME J. of Thbology, 116, pp. 777-785, 1994 https://doi.org/10.1115/1.2927332
  6. Zhu, D., Cheng, H. S., Arai, T. and Hamai, K., 'A NumericalAnalysis for Piston Skirts in Mixed Lubrication-Part I: Basic Modeling,' Trans. ASME J. of Thbology, 114, pp. 553-562, 1992 https://doi.org/10.1115/1.2920917
  7. Zhu, D., Hu, Y.Z., Cheng, H.S., Arai, T. and Hamai, K., 'A Numerical Analysis for Piston Skirts in Mixed LubhcationPart II: Deformation Consideration,' Trans. ASME J. of Tribology, 115, pp. 125-133, 1993 https://doi.org/10.1115/1.2920965
  8. Liu, K., Xie, Y. B. and Gui, C. L., 'A comprehensive study of the friction and dynamic motion of the piston assembly,'Proc. Inst. Mech. Engrs., 212, Part J, pp. 221-226, 1998 https://doi.org/10.1243/1350650981542038
  9. Kim, J. Y, Han, D. C., Cho, M. R. and Choi, J. K., 'The Study on the Dynamics and Fnction Characteristics of PistonSkirt with Consideration of Mixed Lubrication,' KSME Int.Joumal, Vol. 15, No. 6, pp. 735-742, 2001
  10. Patir, N. and Cheng, H. S., 'An Average now Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubhcation,' Trans. ASME J. of Lubrication Technology, 100(1), pp. 12-17, 1978 https://doi.org/10.1115/1.3453103
  11. Patir, N. and Cheng, H. S., 'Application of Average Flow Model to Lubrication Between Rough Sliding Surface,'Trans. ASME J. of Lubrication Technology, 121(2), pp. 220-230, 1979
  12. Greenwood, J. A. and Tripp, J. H., 'The Contact of Two Nominally Flat Rough Surface,' Proc. Instn. Mech. Engrs., 185,48/71, 1971