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

Kim, Ji-Young (Graduate Student, Seoul National University)
Kim, Jee-Woon (Graduate Student, Seoul National University)
Cho, Myung-Rae (Power Train R&D Center, Hyundai Motor Co.)
Han, Dong-Chul (Seoul National University)
Publication Information
Journal of Mechanical Science and Technology / v.16, no.4, 2002 , pp. 468-475 More about this Journal
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
Mixed Lubrication; Piston Ring Pack; Asperity Contact; Minimum Oil Film Thickness; Surface Roughness; Power Loss; Tension;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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