Evolution and characterization of the friction condition transition of chrome-plated cylinder liner and two typical piston rings
This paper is aimed at the friction condition transition (FCT) and scuffing problems of piston ring and cylinder liner (PRCL) in high power density diesel engine. : Friction pairs are selected for testing: chrome-plated (CP) cylinder liner sliding against plasma-sprayed molybdenum (PSM) and the chromium nitride coating with physical vapor deposition (PVD) piston rings, Based on the chaos theory, friction force obtained from the designed starvation experiment was used to characterize the FCT, and then explore the evolution process and its related action mechanism for the two sets of friction pairs. Results showed that attractors constructed from the signal of friction force in the phase space can describe the regularity which seems irregular. When the load and temperature were in the lower range, both pairs presented excellent anti-scuffing behavior, while the load and temperature increased to the higher range, both anti-scuffing behavior became weaker, However, PVD/CP was better than PSM/CP. The scuffing mechanism of PSM/CP was mainly partial adhesion and material transfer, and PVD/CP presented high temperature locally plastic deformation.
Wang Jianping
China North Engine Research Institute,China
国际会议
上海
英文
1-10
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）