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RESEARCH PAPERS

The Profile Development of a Twin-Land Oil-Control Ring During Running-In

[+] Author and Article Information
M. Visscher, D. Dowson, C. M. Taylor

Institute of Tribology, Department of Mechanical Engineering, The University of Leeds, Leeds, LS2 9JT, U.K.

J. Tribol 120(3), 616-621 (Jul 01, 1998) (6 pages) doi:10.1115/1.2834595 History: Received February 22, 1996; Revised June 16, 1997; Online January 30, 2008

Abstract

This paper presents experimental results of motored engine tests on the wear and profile development of a twin-land oil-control ring. It is shown that the roughness height of the plateau honed liner decreases during running-in, indicating that the deeper grooves remain unaffected. The piston lands are much smoother, and do not show a significant overall change in surface roughness. The profile development results are compared with computer predictions in order to verify the theoretical modeling. It is indicated that the worn land profiles remain tapered, with an inclination resembling the twist angle of the ring. However, there remains a difference in the experimental and the numerically predicted land inclinations. This is probably due to the piston tilt, which was not included in the theoretical model.

Copyright © 1998 by The American Society of Mechanical Engineers
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