Friction Characteristics of Piston Ring Pack with Consideration of Mixed Lubrication: Parametric Investigation

  • Published : 2002.04.01

Abstract

This paper reports on the friction characteristics of a piston ring pack with consideration of mixed lubrication. The analytical model is presented by using the average flow antral asperity contact model. The effect of operating condition, and design parameters on the MOFT, maximum friction force, and mean frictional power loss are investigated. Piston ring prick shows mixed and hydrodynamic lubrication characteristics. From the predicted results, it was fand that the ring tension and height of surface roughness have great influence on the frictional power losses in a ring pack. Especially, ring tension is a dominant factor for the reduction of friction loss and maintenance of oil film thickness.

Keywords

References

  1. Dowson, D., Economou, P. N., Euddy, B. L., Strachan, P. J. and Baker, A. J. S., 1979, 'Piston Ring Lubrication-Part Ⅱ.Theoretical Analysis of a Single Ring and a Complete Ring Pack, Energy Conservation Through Fluid Film KKubrication Technology: Frontiers in Research and Design,' Winter Annual Meeting of ASME, pp. 23-52
  2. Greenwood, J. A. and Tripp, J. H., 1971, 'The Contact of Two Nominally Flat Rough Surface,' Proc. Instn. Mech. Engrs., 185, 48/71
  3. Hamatake, T., Wakuri, Y., Soejima, M., Kitahara, T. and Matusi, K., 1995, 'Mixed Lubrication of an Oil-Control Ring in a Piston Engine,' Proc. Int. Trib. Conf., Yokohama, pp. 1429-1434
  4. Lloyd, T., 1968, 'The Hydrodynamic Lubrication of Piston Ring,' Proc. Inst. Mech. Engrs., 183, Part 3P, pp. 28-34
  5. Patir, N. and Cheng, H. S., 1978, 'An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication,' ASME Journal of Lubrication Technology, 100, 1, pp. 12-17 https://doi.org/10.1115/1.3453103
  6. Patir, N., Cheng, H. S., 1979, 'Application of Average Flow Model to Lubrication Between Rough Sliding Surface,' ASME Journal of Lubrication Technology, 121, 2, pp. 220-230
  7. Hu, Y., Cheng, H. S., Arai, T., Kobayashi, Y. and Aoyama, S., 1994, 'Numerical Simulation of Piston Ring in Mixed Lubrication;A Nonaxisymmetrical Analysis,' ASME Journal of Tribology, 116, pp. 470-478 https://doi.org/10.1115/1.2928867
  8. Rohde, S. M., 1980, 'A Mixed Friction Model For Dynamically Loaded Contacts with Application to Piston Ring Lubrication,' Proc. the 7th Leeds-Lyon Symp. on Tribology, Butterworths, pp. 262-278
  9. Ting, L. L., Mayer, J. E., 1974, 'Piston Ring Lubrication and Cylinder Bore Wear Analysis, Part I-Theory,' ASME Journal of Lubrication Technology, 96, pp. 305-314 https://doi.org/10.1115/1.3451948
  10. Wakuri, Y., Hamatake, T., Soejima, M. and Kitahara, T., 1995, 'Study on the Mixed Lubrication of Piston Rings in Internal Combustion Engine,' JSME, 61, 538, Part C, pp. 1123-1128
  11. Yun, J. E., Chung, Y., Chun, S. M. and Lee, K. Y., 1995, 'An Application of Simplified Average Reynolds Equation for Mixed Lubrication Analysis of Piston Ring Assembly in an Internal Combustion Engine,' SAE952562, pp. 206-216