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RESEARCH PAPERS: Internal Combustion Engines: SI Engines

A New Criterion for Judging SI Engine In-Cylinder Pressure Development for Its Effect on Combustion Noise

[+] Author and Article Information
J. Yang, R. W. Anderson

Ford Motor Company, Scientific Research Laboratory, MD 2629, 20000 Rotunda Drive, P.O. Box 2053, Dearborn, MI 48121-2053

J. Eng. Gas Turbines Power 120(3), 664-668 (Jul 01, 1998) (5 pages) doi:10.1115/1.2818197 History: Received November 21, 1997; Online November 19, 2007

Abstract

The effect of engine in-cylinder pressure development on combustion noise is studied based on measured pressure traces and the attenuation-curve theory by Austen and Priede (1958). A new criterion is proposed that correlates better to the noise levels predicted by the attenuation theory than the commonly used maximum pressure rise rate. The effect of engine bore size on combustion noise is studied next with the same engine speed, the same piston mean speed, or the same power output, respectively. For the first two cases, a smaller bore size results in a lower noise level.

Copyright © 1998 by The American Society of Mechanical Engineers
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