| 摘要:为研究柴油机在贫油润滑状态下活塞环-缸套摩擦副的润滑特性，以活塞环-缸套摩擦副为研究对象，基于平均雷诺方程和微凸体接触模型，建立活塞环-缸套摩擦副一维混合润滑模型，并在该模型的基础上，根据来流油膜厚度计算贫油状态润滑域，得到贫油润滑模型。通过贫油润滑模型，对不同载荷、不同频率、不同贫油程度对润滑油膜厚度、摩擦力、摩擦因数等参数的影响进行仿真。结果表明：在贫油润滑时油膜厚度分布规律与富油润滑时的分布规律类似，但油膜厚度与润滑区宽度均小于富油润滑；微凸体承载力占比增大，动压润滑效应被削弱，摩擦因数增大。 |
| 关键词: 贫油润滑 活塞环 缸套 摩擦副 |
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| Simulation of Starved Lubrication Characteristics of Piston Ring-Cylinder Liner |
| CHEN Yuanping,YANG Chuanlei,WANG Yinyan,MA Xuan,WANG Hechun |
| College of Power and Energy Engineering， Harbin Engineering University，Harbin 150001， China |
| Abstract:In order to study the lubrication characteristics of piston ring-cylinder liner friction pair under starved lubrication condition，a one-dimensional hybrid lubrication model of piston ring-cylinder liner friction pair was established based on the mean Reynolds equation and micro-convex body contact model，and on the basis of this model，the starved lubrication domain was calculated according to the thickness of the incoming oil film，and the starved lubrication model was obtained.Through the starved lubrication model，the effects of different loads，different frequencies and different starved degrees on the parameters of lubricant film thickness，friction force and friction factor were simulated.The results show that the distribution of oil film thickness under starved lubrication is similar to that under rich lubrication，but both the film thickness and the width of lubrication zone are smaller than those under rich lubrication；The proportion of micro convex body bearing capacity increases，the dynamic pressure lubrication effect is weakened，and the friction factor increases. |
| Key words: starved lubrication piston ring cylinder liner friction pair |
