Simulation of the Hydrostatic Load of the Valve Plate-cylinder Block System in an Axial Piston Pump

The paper analyses the load of the cylinder block and the valve plate in an axial piston pump. Torques are established of the hydrostatic forces acting on the cylinder block for positive overlap, negative overlap and the construction with relief grooves.The resultant pressing and relieving hydrostatic forces are obtained as functions of the rotation angle of the cylinder block. The values of the relief coefficient of the cylinder block are specified as function of its rotation angle as well.Trajectories are presented of the resultant hydrostatic forces pressing the cylinder block towards the valve plate and of the resultant hydrostatic forces relieving the cylinder block as functions of the rotation angle for the three constructional variants of the valve plate.