Modeling of a Hydraulic Energy Regeneration System: Part II—Experimental Program

[+] Author and Article Information
A. Pourmovahed

Power Systems Research Department, General Motors Research Laboratories, Warren, MI 48090

N. H. Beachley, F. J. Fronczak

Mechanical Engineering Department, University of Wisconsin-Madison, Madison, WI 53706

J. Dyn. Sys., Meas., Control 114(1), 160-165 (Mar 01, 1992) (6 pages) doi:10.1115/1.2896498 History: Received March 22, 1990; Revised March 01, 1991; Online March 17, 2008


This study reports experimental data taken with a hydraulic energy regeneration system and compares the measured data with analytical results. The system tested consisted of two foam-filled hydraulic accumulators, a variable-displacement piston-type pump/motor, a reservoir and a flywheel. During a series of experiments, energy was repeatedly transferred between the hydraulic accumulators and the flywheel through the pump/motor. Computed system variables compared favorably with the experimental results. At high and moderate pump/motor swivel angles, the round-trip efficiency varied from 61 to 89 percent. It was significantly lower at small angles.

Copyright © 1992 by The American Society of Mechanical Engineers
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