Temperature Characteristics of Oil Film in the Port Plate Pair of Axial Piston Pump
The film temperature distribution of the port plate pair in piston pump affects the lubrication,leakage,and friction.The test platform was constructed to measure the three-point film thickness and multi-point temperature of the port plate pair.The wedge-shaped oil film model was established according to the three-point film thickness test data.The axial force balance equation of the piston cylinder was derived regarding the static pressures in the piston chambers and in the film on the cylinder,and the force between the micro-convex surfaces of the port plate pair.The film heat balance model was developed considering the energy loss,the heat conduction,and the oil viscosity-temperature characteristics.The results indicate that the film maximum temperature increases with the rise of the loading pressure and the swash plate inclination angle.The maximum temperature point falls in the range of-20°～20° on both sides of the symmetric line of the high-pressure waist groove.The maximum temperature relative error between theoretical and experimental results is less than 8％.
万方数据
维普
