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RESEARCH PAPERS

Heat Release Analysis of Oxygen-Enriched Diesel Combustion

[+] Author and Article Information
D. Assanis, E. Karvounis

University of Illinois at Urbana-Champaign, Urbana, IL 61801

R. Sekar, W. Marr

Argonne National Laboratory, Argonne, IL 60439

J. Eng. Gas Turbines Power 115(4), 761-768 (Oct 01, 1993) (8 pages) doi:10.1115/1.2906772 History: Received August 01, 1992; Online April 24, 2008

Abstract

A heat release correlation for oxygen-enriched diesel combustion is being developed through heat release analysis of cylinder pressure data from a single-cylinder diesel engine operating under various levels of oxygen enrichment. Results show that standard combustion correlations available in the literature do not accurately describe oxygen-enriched diesel combustion. A novel functional form is therefore proposed, which is shown to reproduce measured heat release profiles closely, under different operating conditions and levels of oxygen enrichment. The mathematical complexity of the associated curve-fitting problem is maintained at the same level of difficulty as for standard correlations. When the novel correlation is incorporated into a computer simulation of diesel engine operation with oxygen enrichment, the latter predicts pressure traces in excellent agreement with measured pressure data. This demonstrates the potential of the proposed combustion simulation to guide the application of oxygen-enriched technology successfully to a variety of multicylinder diesel systems.

Copyright © 1993 by The American Society of Mechanical Engineers
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