Friction characteristics of piston ring pack with consideration of mixed lubrication: Parametric investigation
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- 作者：Kim Ji-Young (1)
Kim Jee-Woon (1) jinko@dreamwiz.com
Cho Myung-Rae (2)
Han Dong-Chul (1) - 关键词：Key words Mixed Lubrication ; Piston Ring Pack ; Asperity Contact ; Minimum Oil Film Thickness ; Surface Roughness ; Power Loss ; Tension
- 刊名：Journal of Mechanical Science and Technology
- 出版时间：April 2002
- 出版年：2002
- 期刊代码：108_1976-3824
- 类别：et
- 卷：16
- 期：4
- 页码：468-475
- 数据来源：sp
摘要
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 and 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 pack 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.