Three-Dimensional EHD Behavior of the Engine Block/Crankshaft Assembly for a Four Cylinder Inline Automotive Engine

[+] Author and Article Information
Thierry Garnier, Dominique Bonneau

Laboratoire de Mécanique des Solides de I’Université de Poitiers, 4 Avenue de Varsovie, F-16021 Angoulême Cedex, France

Christian Grente

Renault S. A. Direction des Etudes, F-92508 Rueil Malmaison, France

J. Tribol 121(4), 721-730 (Oct 01, 1999) (10 pages) doi:10.1115/1.2834128 History: Received January 19, 1998; Revised August 11, 1998; Online January 24, 2008


Detailed formulations are presented for an EHD model that studies all the engine main bearings, considering the bearings, housing and crankshaft elastic deformations in connection with the hydrodynamic pressure fields as well as the quasi-static loads balance for this complex kinematic system. The calculation process uses the finite element method and the Newton-Raphson method for the numerical analysis. The elastic crankshaft behavior is quantified by a standard stiffness matrix. With two structural analysis steps, a condensed housing stiffness matrix is obtained to reduce the computing time. The transient evolution of the cavitation area is evaluated with Murty’s algorithm. This model is utilized to study a four cylinder inline engine.

Copyright © 1999 by The American Society of Mechanical Engineers
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