Heat Release Studies in a Divided-Chamber Diesel Engine

[+] Author and Article Information
A. C. Alkidas

Engine Research Department, General Motors Research Laboratories, Warren, MI 48090-9057

J. Eng. Gas Turbines Power 109(2), 193-199 (Apr 01, 1987) (7 pages) doi:10.1115/1.3240024 History: Received February 20, 1986; Online October 15, 2009


The influences of operational parameters on the heat release and heat transfer characteristics of a divided-chamber diesel engine were examined. Increasing the fuel-air ratio increased the heat release rate, as expected, and increased the duration of combustion. Near the beginning and end of combustion the mass-burned rate was found to increase in direct proportion to an increase of engine speed. In contrast, in the central part of the combustion duration, the mass-burned rate was found to increase at a higher rate than engine speed. For motored conditions, the computed area-averaged heat-flux histories were found to be in reasonable agreement with the corresponding measured local heat-flux histories.

Copyright © 1987 by ASME
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