The Improved Volumetric-Efficiency of an Axial-Piston Pump Utilizing a Trapped-Volume Design

[+] Author and Article Information
Noah D. Manring, Yihong Zhang

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

J. Dyn. Sys., Meas., Control 123(3), 479-487 (Jan 04, 2000) (9 pages) doi:10.1115/1.1389311 History: Received January 04, 2000
Copyright © 2001 by ASME
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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. 246–251.
Yamaguchi,  A., 1966, “Studies on the characteristics of axial plunger pumps and motors,” Bull. JSME 9, No. 34, pp. 305–313.


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The general configuration of the axial-piston pump
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Diagram of mechanical forces and fluid flow
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The flow of hydraulic power
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Standard valve-plate design
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Trapped-volume valve plate design
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Changing valve-plate dimensions as a function of operating pressure
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A plot of the power-loss equations
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A plot of the efficiency equations



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