Journal
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
Volume 139, Issue 1, Pages -Publisher
ASME
DOI: 10.1115/1.4033135
Keywords
mixed lubrication; viscosity; surface treatments; piston ring
Categories
Funding
- National Natural Science Foundation of China [51375300, 51575342]
- Research Project of State Key Laboratory of Mechanical System and Vibration [MSVZD201401]
- National Natural Science Foundation of China [51375300, 51575342]
- Research Project of State Key Laboratory of Mechanical System and Vibration [MSVZD201401]
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In this paper, the start-up process of the ring/liner system with surface texturing is studied. By employing a thermal-mixed lubrication model considering the oil supply, the tribological behavior of the textured surface under the cold and hot start-up conditions is investigated. It is found that the friction coefficient curve under the cold start-up condition is different from the hot start-up result. The textured surface is easier to form the hydrodynamic lubrication than the smooth surface, which is helpful to separate the mixed lubricated contact surfaces. With the textured features on the ring face, the less friction heat is generated at the start-up phase. These effects could prove beneficial in applications with the frequent start and stop conditions. Besides, the inlet wedge of ring can also influence the start-up performance.
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