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为模拟内燃机缸套-活塞环运动,设计适用于缸套-活塞环的往复式摩擦性能试验台,由传动系统、加热系统、加载系统组成.根据系统中悬臂梁和活塞环专用夹具不同的使用要求,分别进行结构设计和有限元分析.结果表明,当实验条件达到预设极限值(加热温度130℃,摩擦力500 N)时悬臂梁和活塞环专用夹具均能满足使用要求.试验台使用二维力测力传感器,通过特殊装配设计,可同时测量摩擦力和法向负载.通过摩擦性能实验验证,缸套-活塞环在较低负荷(61.7、92.6、123.4 N)条件下,摩擦因数随转速的增大而急剧减小;在较高负荷(250.8、322.5 N)条件下,摩擦因数随转速的增大有所减小并逐渐趋于稳定状态.“,”In order to simulate the movement of cylinder liner-piston ring in internal combustion engine,a reciprocating test-rig to measure the tribological performance of cylinder liner-piston ring system was designed,which consists of transmitting system,heating system and loading system.According to the different operating requirement for the cantilever beam and sample fixing device,the structural design and finite element analysis was carried out for these two parts respectively.The result shows that designed cantilever beam and sample fixing device can meet the requirement under the limit experimental condition(heating to 130 ℃,friction 500 N).The 2-dimension force sensor used on the test-rig can measure friction and normal load simultaneously by special assembly design.By the friction and wear experimental verification,the friction coefficient of the cylinder liner-piston ring is decreased rapidly along with the increasing of speed in low load condition (61.7,92.6 and 123.4 N),and the friction coefficient is decreased slightly and gradually tends to be stable along with the increasing of speed in high load condition(250.8 and 322.5 N).