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TECHNICAL PAPERS: Internal Combustion Engines

Variable Composition Hydrogen/Natural Gas Mixtures for Increased Engine Efficiency and Decreased Emissions

[+] Author and Article Information
R. Sierens, E. Rosseel

University of Gent, Laboratory for Transporttechnology, Sint-Pietersnieuwstraat B-9000 Gent, Belgium

J. Eng. Gas Turbines Power 122(1), 135-140 (Jul 05, 1999) (6 pages) doi:10.1115/1.483191 History: Received June 25, 1992; Revised July 05, 1999
Copyright © 2000 by ASME
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References

Hoekstra, R. L., Collier, K., and Mulligan, N., 1994, “Demonstration of Hydrogen Mixed Gas Vehicles,” Proceedings, 10th World Hydrogen Energy Conference, Cocoa Beach, Vol. 3, pp. 1781–1796.
Hoekstra,  R. L., Collier,  K., Mulligan,  N., and Chew,  L., 1995, “Experimental Study of a Clean Burning Vehicle Fuel,” Int. J. Hydrogen Energy, 20, No. 9, pp. 737–745.
Hoekstra, R. L., Van Blarigan, P., and Mulligan, N., 1996, “ NOx Emissions and Efficiency of Hydrogen, Natural Gas and Hydrogen/Natural Gas Blended Fuels,” SAE Paper 961103.
Swain, M. R., Yusuf, M., Dülger, Z., and Swain, M. N., 1993, “The Effects of Hydrogen Addition on Natural Gas Engine Operation,” SAE Paper 932775.
Yusuf, M., Swain, M. R., Swain, M. N., and Dülger, Z., 1997, “An Approach to Lean Burn Natural Gas Fuelled Engine Through Hydrogen Addition,” Proceedings, 30th ISATA Conference, Florence, paper 97EL081.
Larsen,  J. F. and Wallace,  J. S., 1997, “Comparison of Emissions and Efficiency of a Turbocharged Lean-Burn Natural Gas and Hythane-Fuelled Engine,” ASME J. Eng. Gas Turbines Power, 119, pp. 218–226.
Cattelan, A. I., and Wallace, J. S., 1994, “Hythane and CNG Fuelled Engine Exhaust Emission and Engine Efficiency Comparison,” Proceedings, 10th World Hydrogen Energy Conference, Cocoa Beach, Vol. 3, pp. 1761–1770.
Raman, V., Hansel, J., Fulton, J., Lynch, F., and Bruderly, D., 1994, “Hythane—An Ultra Clean Transportation Fuel,” Proceedings, 10th World Hydrogen Energy Conference, Cocoa Beach, Vol. 3, pp. 1797–1806.
Bell,  S. R. and Gupta,  M., 1997, “Extension of the Lean Operating Limit for Natural Gas Fuelling of a Spark Ignited Engine Using Hydrogen Blending,” Combust. Sci. Technol., 123, pp. 23–48.
Milton,  B. E. and Keck,  J. C., 1984, “Laminar Burning Velocities in Stoichiometric Hydrogen and Hydrogen-Hydrocarbon Gas Mixtures,” Combust. Flame, 58, pp. 13–22.
Karim, G. A., 1996, “Hydrogen as an Additive to Methane for Engine Applications,” Proceedings, 11th World Hydrogen Energy Conference, Stuttgart, Vol. 2, pp. 1921–1926.
Heywood, J., 1988, Internal Combustion Engine Fundamentals, McGraw-Hill, New York.

Figures

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The hydrocarbon emissions as a function of the air-fuel ratio λ
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The NOx emission as a function of the air-fuel ratio λ
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The hydrocarbon emissions versus bmep
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The NOx emission versus bmep
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The NOx emissions versus efficiency
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The NOx emissions versus hydrocarbon emissions
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The bmep for high hydrogen concentrations as a function of λ
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The volumetric efficiency as a function of the air-fuel ratio λ
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The optimum ignition advance as a function of the air-fuel ratio λ
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The fuel preparation system
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The influence of the air-fuel ratio λ on bmep
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The influence of the air-fuel ratio λ on the efficiency

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