Abstract
ABSTRACT The oil film between the cylinder block and valve plate represents one of the most critical designs in the rotating kit of an axial piston pump. The finite difference and relaxation iterative methods are used to solve the Reynolds equation of the oil film pressure for axial piston pump valve plate pair. Simulating the oil film thickness and pressure distribution. Analysing the change of kidney-shaped slot’s pressure to the load carrying capacity and offset load torque. The lubricating characteristics of wedge-shaped oil film and the maximum pressure under different working conditions are comparative analysis. The result shows that the oil film thickness changed when cylinder block is tilt relative to the valve plate and produced hydrodynamic effects. The load capacity and offset load torque of oil film increase with increasing inlet pressure. The structural parameter of the valve plate pair influenced lubrication characteristics.
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