缸套-活塞环摩擦学性能模拟实验研究

发布时间：2018-05-15 02:01

  本文选题：摩擦性能试验台 + 结构设计　； 参考：《润滑与密封》2017年03期

【摘要】：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。
[Abstract]:In order to simulate the cylinder liner piston ring movement of internal combustion engine, a reciprocating friction performance test table suitable for cylinder piston ring is designed, which is composed of transmission system, heating system and loading system. The structure and finite element analysis are carried out according to the different use requirements of the special jig of the cantilever beam and piston ring in the system. The results show that the experimental conditions are reached. When the preset limit (heating temperature is 130, 500 N), the special fixture of the cantilever beam and the piston ring can meet the requirements. The test bench uses a two-dimensional force measuring force sensor to measure the friction force and the normal load at the same time through the special assembly design. The cylinder liner piston ring is proved to be at a lower load (61.7,92.6123.4 N) through the friction performance test. Under the condition of the higher load (250.8322.5 N), the friction factor decreases with the increase of the speed, and gradually tends to a stable state.

【作者单位】： 现代汽车零部件技术湖北省重点实验室(武汉理工大学);汽车零部件技术湖北省协同创新中心;
【基金】：国家自然科学基金项目(51575410)
【分类号】：TH117.1
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本文编号：1890453