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TECHNICAL PAPERS

Optimal Orifice Geometry for a Hydraulic Pressure-Reducing Valve

[+] Author and Article Information
N. D. Manring

Mechanical & Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211

R. E. Johnson

Mechanical Engineering and Engineering Science, The University of North Carolina, Charlotte, NC 28223

J. Dyn. Sys., Meas., Control 119(3), 467-473 (Sep 01, 1997) (7 pages) doi:10.1115/1.2801280 History: Received March 11, 1996; Online December 03, 2007

Abstract

In this paper, the flow gain of a hydraulic pressure-reducing valve is examined. It is noted that classical linear-analysis is typically used to optimize the flow gain of hydraulic control-systems and that in practice this parameter is usually nonlinear. For this reason, it is important that a designer know how to reconcile the optimization using linear analysis with the implementation of the nonlinear physical design. In particular, this paper concerns itself with the steady-state flow gain and the shape of the flow passage that contributes to the nonlinear flow-gain characteristics. The shapes of a circle, a rectangle, a diamond, and a triangle are discussed and it is shown that a triangular shape provides an optimal flow passage compared to other shapes of similar size.

Copyright © 1997 by The American Society of Mechanical Engineers
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