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TECHNICAL BRIEFS

Valve-Plate Design for an Axial Piston Pump Operating at Low Displacements

[+] Author and Article Information
Noah D. Manring

Mechanical and Aerospace Engineering Department, University of Missouri—Columbia, Columbia, MO 65211

J. Mech. Des 125(1), 200-205 (Mar 21, 2003) (6 pages) doi:10.1115/1.1541632 History: Received August 01, 2001; Revised April 01, 2002; Online March 21, 2003
Copyright © 2003 by ASME
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References

Zeiger,  G., and Akers,  A., 1985, “Torque on the Swashplate of an Axial Piston Pump,” ASME J. Dyn. Syst., Meas., Control, 107, pp. 220–26.
Bolinger, J. W., 1982, “Considerations for Hydrostatic System Noise Control,” SAE International Off-Highway Meeting & Exposition, Milwaukee, WI, pp. 29–41.
Edge,  K. A., and Darling,  J., 1989, “The Pumping Dynamics of Swash Plate Piston Pumps,” ASME J. Dyn. Syst., Meas., Control, 111, pp. 307–312.
Helgestad,  B. O., Foster,  K., and Bannister,  F. K., 1974, “Pressure Transients in an Axial Piston Hydraulic Pump,” Proc. Inst. Mech. Eng., 188, pp. 189–95.
Fluid Power, Edited by T. Maeda ©1993 E&FN Spon, ISBN 0419191003, pp. 361–366.
Lin,  S. J., Akers,  A., and Zeiger,  G., 1985, “The Effect of Oil Entrapment in an Axial Piston Pump,” ASME J. Dyn. Syst., Meas., Control, 107, pp. 246–51.
Manring, N. D., and Zhang, Y., 2000, “The Improved Volumetric Efficiency of an Axial-Piston Pump Utilizing a Trapped-Volume Design,” Proc. of the ASME Winter Annual Meeting, FPST-Vol. 7, Orlando, FL, pp. 39–47.
Nishimura, T., Umeda, T., Tsuta, T., Fujiwara, M., and Kawakami, M., 1995, “Dynamic Response Analysis of a Swash Plate Type Hydraulic Piston Pump,” ASME PVP-Vol 300, Dynamic Fracture, Failure and Deformation, pp. 145–55.
Yamaguchi,  A., 1966, “Studies on the Characteristics of Axial Plunger Pumps and Motors,” Bull. JSME, 9(34), pp. 305–13.
Zaporozhets,  V. P., and Fursenko,  A. K., 1989, “Investigation of the Pressure Equalization Process in the Working Chamber of an Axial-Piston Hydromachine with Face Distributor,” Vestnik Mashinostroeniya, 69 (4), pp. 14–18.

Figures

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General pump configuration
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A general schematic of slot and porting geometry near top or bottom dead center of the valve plate
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Typical slot geometries that are used within axial-piston pumps
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Control volume for a single piston chamber
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Dimensionless pressure transition for three different slot geometries
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Dimensionless pressure time rate-of-change for three different slot geometries

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