Effect of Out-of-Roundness on the Performance of a Diesel Engine Connecting-Rod Bearing

[+] Author and Article Information
D. Vijayaraghavan

NASA/Lewis Research Center, Cleveland, Ohio

D. E. Brewe

US Army Aviation Systems Command, NASA/Lewis Research Center, Cleveland, Ohio

T. G. Keith

Department of Mechanical Engineering, University of Toledo, Toledo, Ohio

J. Tribol 115(3), 538-543 (Jul 01, 1993) (6 pages) doi:10.1115/1.2921671 History: Received February 20, 1991; Revised March 01, 1992; Online June 05, 2008


In this paper, the dynamic performance of the Ruston and Hornsby VEB diesel engine connecting-rod bearing with circular and out-of-round profiles is analyzed. The effect of cavitation is considered by using a cavitation algorithm, which mimics JFO boundary conditions. The effect of mass inertia is accounted for by solving coupled nonlinear equations of motion. The journal profiles considered are circular, elliptical, semi elliptical and three lobe epicycloid. The predicted journal trajectory and other performance parameters for one complete load cycle are presented for all of the out-of-round profiles and are also compared with the predictions for the circular bearing.

Copyright © 1993 by The American Society of Mechanical Engineers
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