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RESEARCH PAPERS

A Numerical Analysis for Piston Skirts in Mixed Lubrication—Part I: Basic Modeling

[+] Author and Article Information
Dong Zhu, Herbert S. Cheng

Center for Engineering Tribology, Northwestern University, Evanston, Ill. 60208

Takayuki Arai, Kyugo Hamai

Engine and Powertrain Research Laboratory, Central Engineering Laboratories, Nissan Motor Company, Yokosuka, 237 Japan

J. Tribol 114(3), 553-562 (Jul 01, 1992) (10 pages) doi:10.1115/1.2920917 History: Received February 15, 1991; Revised July 01, 1991; Online June 05, 2008

Abstract

This paper presents a mathematical model for piston skirts in mixed lubrication. It takes into account the effects of surface waviness, roughness, piston skirt surface profile, bulk elastic deformation and thermal distortion of both piston skirts and cylinder bore on piston motion, lubrication and friction. The corresponding computer program developed can be used to calculate the entire piston trajectory and the hydrodynamic and contact friction forces as functions of crack angle under engine running conditions. This paper is the first part of a series of two papers. It gives basic information and some preliminary results. The second part will include the major results and discussions, focused on the influences of elastic and thermal deformations.

Copyright © 1992 by The American Society of Mechanical Engineers
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