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RESEARCH PAPERS: Internal Combustion Engines

Structural Analysis of Cylinder Head Cracking in a Heavy-Duty Diesel Engine

[+] Author and Article Information
J.-Y. Luo, C. J. Korte

Cummins Engine Company, Inc., Box 3005, Columbus, IN 47202-3005

J. Eng. Gas Turbines Power 120(2), 424-428 (Apr 01, 1998) (5 pages) doi:10.1115/1.2818140 History: Received August 01, 1996; Online November 19, 2007

Abstract

There were fatigue cracking problems at the intake ports of a prototype heavy-duty six-cylinder head. Several proposals of design change were evaluated by finite element and reliability analysis. Constant amplitude loading and monotonic temperature-dependent properties of the head material are assumed. An equivalent stress-strain parameter (ESSP) is proposed to consider multiaxial stress/strain effect on fatigue cracking. A significant reliability improvement was predicted with cost savings and verified by limited engine tests.

Copyright © 1998 by The American Society of Mechanical Engineers
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