Parametric Study of the Dynamic Performance of Gas Lubricated Ringless Pistons

[+] Author and Article Information
K. Gommed, I. Etsion

Department of Mechanical Engineering, Technion, Haifa 32000, Israel

J. Tribol 116(1), 63-69 (Jan 01, 1994) (7 pages) doi:10.1115/1.2927047 History: Revised January 14, 1993; Received June 14, 1993; Online June 05, 2008


A parametric study is performed for a relatively large size helium cryocooler which utilizes a ringless piston. The results are presented in a dimensionless form and may be useful for other ringless-piston systems as well. Altogether twelve different parameters were studied and their effect on piston stability and sealing performance was analyzed and discussed. Although the cylindrical piston shape is commonly used for ringless piston applications, it seems that this is not the best choice for an optimum design.

Copyright © 1994 by The American Society of Mechanical Engineers
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