Tilting-Pad Journal Bearings With Electronic Radial Oil Injection

[+] Author and Article Information
I. F. Santos, F. H. Russo

DPM - Department of Mechanical Design, UNICAMP, State University of Campinas, 13083-970 Campinas, SP, Brazil

J. Tribol 120(3), 583-594 (Jul 01, 1998) (12 pages) doi:10.1115/1.2834591 History: Received February 26, 1996; Revised July 24, 1997; Online January 30, 2008


This paper gives a theoretical treatment of the problem of journal bearings modeling connected to electronic oil injection into the bearing gap. The feasibility of influencing the static behavior of hydrodynamic forces by means of such oil injection is investigated. The lubricant is injected into the bearing gap by two mechanisms of lubrication: the conventional hydrodynamic lubrication and through orifices distributed along the bearing surface (active lubrication in the radial direction). By controlling the pressure of the oil injection, it is possible to get large variations in the active hydrodynamic forces; such effects could be useful for reducing vibrations in rotating machines.

Copyright © 1998 by The American Society of Mechanical Engineers
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