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RESEARCH PAPERS

Measurement of the Journal Locus in the Con-Rod Big-End Bearing of an Automobile Gasoline Engine

[+] Author and Article Information
M. Hiruma

Department of Mechanical Engineering, Musashi Institute of Technology, Tokyo, Japan

S. Furuhama

Musashi Institute of Technology, Tokyo, Japan

J. of Lubrication Tech 95(2), 249-254 (Apr 01, 1973) (6 pages) doi:10.1115/1.3451787 History: Received October 10, 1970; Revised August 09, 1971; Online October 18, 2010

Abstract

To measure the absolute oil film thickness or the journal center locus in con-rod big-end bearings of a practical automobile engine, a special new device and procedure have been developed. By means of this method, the measurement could be carried out stably up to full load at 5000 rpm. These measurements revealed that the journal travels along the vicinity of bearing surface by the inertia force. In the combustion period, however, the journal center passes near the center point of the bearing. On the other hand, under a misalignment condition, the minimum oil film thickness depends on the combustion pressure. Therefore in the future many of the problems related to con-rod big-end bearings will be resolved by this method.

Copyright © 1973 by ASME
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