The Analysis of Cavitation Problems in the Axial Piston Pump

This paper discusses and analyzes the control volume of a piston bore constrained by the valve plate in axial piston pumps. The vacuum within the piston bore caused by the rise volume needs to be compensated by the flow; otherwise, the low pressure may cause the cavitations and aerations. In the research, the valve plate geometry can be optimized by some analytical limitations to prevent the piston pressure below the vapor pressure. The limitations provide the design guide of the timings and overlap areas between valve plate ports and barrel kidneys to consider the cavitations and aerations.

[1]  Noah D. Manring,et al.  Experimental Studies on the Performance of Slipper Bearings Within Axial-Piston Pumps , 2004 .

[2]  K A Edge,et al.  The Pumping Dynamics of Swash Plate Piston Pumps , 1989 .

[3]  Noah D. Manring,et al.  Valve-Plate Design for an Axial Piston Pump Operating at Low Displacements , 2003 .

[4]  Noah D. Manring,et al.  The Impact of Linear Deformations on Stationary Hydrostatic Thrust Bearings , 2002 .

[5]  G. Thomas.  Calculus and Analytic Geometry , 1953 .

[6]  Brane Širok,et al.  Development of a cavitation erosion model , 2006 .

[7]  Claus-Dieter Munz,et al.  Cavitation in Hydraulic Tools Based on Thermodynamic Properties of Liquid and Gas , 2002 .

[8]  K A Edge,et al.  Predicting the behavior of slipper pads in swashplate-type axial piston pumps , 1996 .

[9]  John Aurie Dean,et al.  Lange's Handbook of Chemistry , 1978 .

[10]  Noah D. Manring,et al.  The Improved Volumetric-Efficiency of an Axial-Piston Pump Utilizing a Trapped-Volume Design , 2000, Fluid Power Systems and Technology.

[11]  Atsushi Yamaguchi,et al.  Cavitation in an Axial Piston Pump , 1982 .

[12]  Andrea Vacca,et al.  Modelling of fluid properties in hydraulic positive displacement machines , 2006, Simul. Model. Pract. Theory.

[13]  François Avellan,et al.  Comparison of erosion mechanisms in different types of cavitation , 1986 .

[14]  Atsushi Yamaguchi,et al.  Formation of a Fluid Film between a Valve Plate and a Cylinder Block of Piston Pumps and Motors : 2nd Report, A Valve Plate with Hydrostatic Pads : Heat Transfer, Combustion, Power, Thermophysical Properties , 1987 .

[15]  A. Yamaguchi.  Formation of A Film Fluid Between A Valve Plate and A Cylinder Block of Piston Pumps and Motors ( 2nd Report, A Valve Plate With Hydrostatic Pads ) , 1987 .

[16]  Atsushi Yamaguchi.  Formation of a Fluid Film between a Valve Plate and a Cylinder Block of Piston Pumps and Motors : 1st Report, A Valve Plate with Hydrodynamic Pads , 1986 .

[17]  Jae-Youn Jung,et al.  Measurment of fluid film thickness on the valve plate in oil hydraulic axial piston pumps (Part II: Spherical design effects) , 2005 .

[18]  François Avellan,et al.  Cavitation erosion power as a scaling factor for cavitation erosion of hydraulic machines , 1993 .

[19]  Andrea Vacca,et al.  Simulation Model of an Axial Piston Pump Inclusive of Cavitation , 2002 .

[20]  H. E. Merritt,et al.  Hydraulic Control Systems , 1991 .

[21]  Olivier Coutier-Delgosha,et al.  Numerical modelling of cavitation erosion , 2009 .

[22]  K A Edge,et al.  Cylinder Pressure Transients in Oil Hydraulic Pumps with Sliding Plate Valves , 1986 .