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Modeling the Effects of EGR and Injection Pressure on Emissions in a High-Speed Direct-Injection Diesel Engine

Experimental data is used in conjunction with multidimensional modeling in a modified version of the KIVA-3V code to characterize the emissions behavior of a high-speed, direct-injection diesel engine. Injection pressure and EGR are varied across a range of typical small-bore diesel operating... Full description

1st Person: Richards, K. J. verfasserin
Additional Persons: Subramaniam, M. N. verfasserin; Reitz, R. D. verfasserin; Lai, M.-C. verfasserin; Henein, N. A. verfasserin; Miles, P. C. verfasserin
Source: in SAE Transactions Vol. 110 (2001), p. 842-853
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Type of Publication: Article
Language: English
Published: 2001
Online: Volltext
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Summary: Experimental data is used in conjunction with multidimensional modeling in a modified version of the KIVA-3V code to characterize the emissions behavior of a high-speed, direct-injection diesel engine. Injection pressure and EGR are varied across a range of typical small-bore diesel operating conditions and the resulting soot-NOx tradeoff is analyzed. Good agreement is obtained between experimental and modeling trends; the HSDI engine shows increasing soot and decreasing NOx with higher EGR and lower injection pressure. The model also indicates that most of the NOx is formed in the region where the bulk of the initial heat release first takes place, both for zero and high EGR cases. The mechanism of NOx reduction with high EGR is shown to be primarily through a decrease in thermal NOx formation rate.
Item Description: Copyright: Copyright 2002 Society of Automotive Engineers, Inc.
Physical Description: Online-Ressource
ISSN: 2577-1531

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