Study on the Elastohydrodynamic Lubrication Characteristics of the Vane-stator Pair in High Pressure Vane Pump

At present, the elastohydrodynamic lubrication characteristics between the vane-stator pair of high-pressure vane pump are not clear, and the premature wear failure of the vane-stator pair has become a bottleneck restricting the high-pressure development of vane pump. Therefore, a mathematical model of the elastohydrodynamic lubrication of the vane-stator pair is established. Combined with the bicolor light interference elastohydrodynamic lubrication test and the high-pressure vane pump bench test, the characteristics of pressure distribution, elastic deformation, oil film thickness distribution and oil film hydrodynamic bearing between the vane-stator pair were studied. And the distribution diagram of the oil film hydrodynamic bearing capacity between the vane-stator pair at different phases is provided. The results show that, the oil film in the oil absorption area is relatively thin, with a minimum oil film thickness of about 0.45 μm. The oil film thickness at both ends of the vane-stator pair in the width