【作者】

Wang Jianping

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表。论文的版权归CIMAC所有。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.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

3

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