An Optimum Step Design for Centering of Pistons

[+] Author and Article Information
I. Etsion

Department of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel

J. Fluids Eng 97(4), 621-624 (Dec 01, 1975) (4 pages) doi:10.1115/1.3448147 History: Received September 01, 1975; Online October 12, 2010


A stepped lands piston enclosed within a tight circular cylinder of uniform bore and subjected to unequal upstream and down-stream boundary pressures is analysed for the case of incompressible fluid. Performance characteristics are given for small eccentricity ratios as a function of the step height and location, and a design parameter which relates the leakage and the centering force is defined. It is shown that piston performance can bo optimized by selecting a proper step design.

Copyright © 1975 by ASME
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