The Effect of Added Rotation on Crosshead Bearing Performance

[+] Author and Article Information
M. Takasaki

Mitsui Engineering & Shipbuilding Co., Tamano City, Okayama, Japan

C. M. McC. Ettles

Mechanical Engineering Department, Rensselaer Polytechnic Institute, Troy, N.Y. 12181

J. Tribol 107(1), 104-109 (Jan 01, 1985) (6 pages) doi:10.1115/1.3260984 History: Received March 20, 1984; Online October 29, 2009


Crosshead bearings in two stroke engines operate under severe conditions of lubrication since the sliding velocity of the bearing parts is very low and oscillatory. A computational model is developed to find the effect of intermittently increasing the speed of rotation by indexing the pin through a few degrees of rotation at some part of the 360 deg cycle. It is found that the best position for added rotation is at bottom dead center and that the improvement in minimum film thickness is approximately proportional to the amount of extra rotation. Quite small amounts of pin indexing (ten degrees) can produce a worthwhile increase in film thickness.

Copyright © 1985 by ASME
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