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TECHNICAL PAPERS—SPECIAL ICE SECTION: Alternative Fuels Combustion and Emissions

Stoichiometric Operation of a Gas Engine Utilizing Synthesis Gas and EGR for NOx Control

[+] Author and Article Information
Jack A. Smith

Department of Engine Research, Engine and Vehicle Research Division, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78226-0510

Gordon J. J. Bartley

Department of Emissions Research, Automotive Products and Emission Research Division, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78226-0510

J. Eng. Gas Turbines Power 122(4), 617-623 (Apr 02, 2000) (7 pages) doi:10.1115/1.1289386 History: Received March 20, 2000; Revised April 02, 2000
Copyright © 2000 by ASME
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References

Meyers, D. P., and Kubesh, J. T., 1995, “The Hybrid Rich-Burn/Lean-Burn Engine,” Natural Gas and Alternative Fuels for Engines, Book No. H0093 ASME, New York.
Smith, J. A., et al., 1996, “The Hybrid Rich-Burn/Lean-Burn Engine, Part 2,” Natural Gas Engine, Combustion, Emission and Simulation, ASME, New York.
Houseman, J., and Hoehn, F. W., 1974, “A Two-Charge Engine Concept: Hydrogen Enrichment,” SAE Paper No. 741169.
Parks, F. B., 1976, “A Single-Cylinder Engine Study of Hydrogen Rich Fuels,” SAE Paper No. 760099.
MacDonald, J. S., 1976, “Evaluation of the Hydrogen-Supplemented Fuel Concept with an Experimental Multicylinder Engine,” SAE Paper No. 760101.
Andreatta, D., 1996, “An Experimental Study of Air-Reformed Natural Gas in Spark-Ignited Engines,” SAE Paper No. 960852.
Transamerica Delaval, Inc., 1982, “Emulsified Fuel Testing in a Medium Speed Diesel Engine,” Final Report, Prepared for the United States Department of Transportation Maritime Administration, MARAD Report No. MA-RD-920-82069.
Pearce, K. R., et al., “Emission Characteristics of a Medium Speed Diesel Using Water-Emulsified Residual Fuels,” Final Report, Prepared for the United States Department of Transportation Maritime Administration, MARAD Contract No. MA-80-SAC-01859.
Harbach,  J. A., and Agosta,  V., 1991, “Effects of Emulsified Fuel on Combustion in a Four-Stroke Diesel Engine,” J. Ship Res., 35, No. 4, pp. 356–363.
Kuroda, H., et al., 1978, “The Fast Burn with Heavy EGR, New Approach for Low NOx and Improved Fuel Economy,” SAE Paper No. 780006.
Sato, Y., et al., 1993, “Effect of EGR on NOx and Thermal Efficiency Improvement in a D.I. Methanol Engine for Light Duty Vehicles,” SAE Paper No. 930758.
Noble, A. D., and Beaumont, A. J. 1991, “Control System for a Low Emissions Natural Gas Engine for Urban Vehicles,” SAE Paper No. 910255.
Podnar, D. J., et al., 1978, “Development and Application of Advanced Control Techniques to Heavy-Duty Natural Gas Engines,” presented at the Society of Automotive Engineers Conference.
Heywood, J. B., 1988, Internal Combustion Engine Fundamentals, McGraw-Hill, New York, New York, pp. 567–586.
Smith, J. A., and Bartley, G. J. J., 1997, “Using Syngas in a Heavy-Duty, Lean-Burn Natural Gas Engine as a Means of NOx Reduction,” Engine Combustion Performance and Emissions, ASME, New York.

Figures

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Schematic of test engine setup
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Syngas composition as a function of catalyst equivalence ratio
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CO2 mole fraction in intake charge as a function of overall system equivalence ratio
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Maximum EGR fractions for syngas fractions of 0, 30, and 40 percent
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Brake thermal efficiency versus the EGR fraction
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Effect of syngas on lower heating value of fuel mixture at intake port
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Indicated thermal efficiency versus the EGR fraction
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Ignition delay versus the EGR fraction
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10–90 percent MFB duration versus the EGR fraction
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Effects of syngas and EGR on raw, uncorrected, NOx emissions
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Minimum NOx for the baseline and syngas cases at the corresponding maximum EGR fraction
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Wet unburned HC emissions versus the EGR fraction
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Dry CO emissions versus the EGR fraction
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The COV of IMEP versus the EGR fraction

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