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TECHNICAL PAPERS: Internal Combustion Engines

Strategies for Reduced NOx Emissions in Pilot-Ignited Natural Gas Engines

[+] Author and Article Information
S. R. Krishnan, K. K. Srinivasan, S. Singh, S. R. Bell, K. C. Midkiff

Department of Mechanical Engineering, The University of Alabama, 290 Hardaway Hall, Tuscaloosa, AL 35487-0276

W. Gong, S. B. Fiveland, M. Willi

Technical Center, Building F, Caterpillar, Inc., P.O. Box 1875 Peoria, IL 61656-1875

J. Eng. Gas Turbines Power 126(3), 665-671 (Aug 11, 2004) (7 pages) doi:10.1115/1.1760530 History: Received October 01, 2002; Revised September 01, 2003; Online August 11, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic of experimental setup
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Fuel conversion efficiency and brake specific energy consumption versus injection timing
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(a) Gross heat release rate versus crank angle for injection timings between 15 deg and 35 deg BTDC. (b) Gross heat release rate versus crank angle for injection timings between 40 deg and 60 deg BTDC.
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Onset of combustion and combustion duration (10%–90%) versus injection timing
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Coefficient of variation of imep, ignition delay, and overall equivalence ratio versus injection timing
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Mean NOx-HC tradeoff curve at different injection timings
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NOx-fuel conversion efficiency tradeoff curve at different injection timings
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HC and CO emissions versus injection timing

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