液固二相流体润滑状态下的热效应分析

Analysis of the thermal effect in liquid-solid lubrication

文章以活塞环-缸套摩擦副为研究对象,基于雷诺方程和能量方程,考虑了润滑油的粘温效应,对液固二相流体润滑状态下的流体压力进行计算和分析,探讨了不同工作状态下温度对压力所带来的影响。另外,针对颗粒的存在所引起的润滑油粘度变化,讨论了润滑油中的颗粒对流体压力所带来的影响,从理论上对液固二相流体润滑状态下的活塞环-缸套摩擦副的润滑特性进行分析和研究。

The lubrication character of the piston ring-cylinder liner friction pair is researched theoretically with a calculation example. The fluid pressure in the state of liquid-solid lubrication is calculated and analyzed based on the Reynolds equation and the energy equation,and the effect of viscosity-temperature is taken into account. The influence of temperatures on the fluid pressure in different practical situations is described. In view of the change of viscosity of the lubrication oil due to the presence of the solid particles in the oil, the effect of the particles on the fluid pressure is discussed.