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TECHNICAL PAPERS: Internal Combustion Engines: Emissions

Use of an Electrically Heated Catalyst to Reduce Cold-Start Emissions in a Bi-Fuel Spark Ignited Engine

[+] Author and Article Information
G. N. Coppage, S. R. Bell

Department of Mechanical Engineering, The University of Alabama, Box 870276, Tuscaloosa, AL 35487-0276

J. Eng. Gas Turbines Power 123(1), 125-131 (Aug 01, 1999) (7 pages) doi:10.1115/1.1340640 History: Received June 01, 1999; Revised August 01, 1999
Copyright © 2001 by ASME
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References

U.S. Environmental Protection Agency Report, 1995, “National Air Pollutant Trends, 1900–1994,” EPA-454/R-95-011, Research Triangle Park, NC.
Summers, J. C., and Silver, R. G., 1992, “Catalyst Technologies to Meet Future Emission Requirements for Light-Duty Vehicles,” Catalytic Control of Air Pollution—Mobile and Stationary Sources, R. G. Silver, J. E. Sawyer, and J. C. Summers, eds., American Chemical Society, Washington, D.C., pp. 3–10.
Laing, P. M., 1994, “Development of an Alternator-Powered Electrically-Heated Catalyst System,” SAE Paper No. 941042, LEV/ULEV Emission Technologies, Society of Automotive Engineers, Warrendale, PA, pp. 137–144.
Whittenberger, W. A., and Kubsh, J. E., 1990, “Recent Developments in Electrically Heated Metal Monoliths,” Recent Trends in Automotive Emissions Control, Society of Automotive Engineers, Inc., Warrendale, PA, SAE Paper No. 900503, pp. 61–70.
Gottberg, I., Rydquist, J. E., Backlund, O., Wallman, S., Maus, W., Bruck, R., and Swars, H., 1991, “New Potential Exhaust Gas Aftertreatment Technologies for ‘Clean Car’ Legislation,” SAE Paper No. 910840.
Kaiser, F. W., Maus, W., Swars, H., and Bruck, R., 1993, “Optimization of an Electrically-Heated Catalytic Converter System Calculations and Application,” SAE Paper No. 932722.
Brunson, G., Kubsh, J. E., and Whittenberger, W. A., 1993, “Combining Heated and Unheated Core Functions for Improved Cold Start Emissions Performance,” SAE Paper No. 932722.
Hellman, K. H., Piotrowski, G. K., and Schaefer, R. M., 1994, “Evaluation of Specialized Methane Catalytic Converters on a CNG-Fueled Vehicle,” LEV/ULEV Emission Technologies, Society of Automotive Engineers, Inc., Warrendale, PA, February, SAE Paper No. 940473, pp. 67–86.
Coppage, G. N., 1996, “Cold-Start Emissions Reduction in a Bi-Fuel Spark Ignited Engine Using an Electrically-Heated Catalyst,” Master’s thesis, University of Alabama, Tuscaloosa, AL.

Figures

Grahic Jump Location
Transient test cycle speed and load specifications
Grahic Jump Location
NOx concentration in ppm and brake torque as functions of time for gasoline fueling, before and after catalyst sampling, 0, 20, and 40 s electric catalyst heating, without secondary air injection
Grahic Jump Location
CO concentration in ppm and engine speed as functions of time for gasoline fueling, before and after catalyst sampling, 0, 20, and 40 s electric catalyst heating, with secondary air injection at approximately 125 lpm for 60 s
Grahic Jump Location
THC concentration in ppmC and engine speed as functions of time for gasoline fueling, before and after catalyst sampling, 40, s electric catalyst heating, with and without secondary air injection at approximately 125 lpm for 60 s
Grahic Jump Location
THC concentration in ppmC and engine speed as functions of time for gasoline and CNG fueling, after catalyst sampling, 0 s electric catalyst heating, without secondary air injection, stock, and enriched CNG fueling
Grahic Jump Location
CO concentration in ppm and engine speed as functions of time for gasoline and CNG fueling, after catalyst sampling, 0 s electric catalyst heating, without secondary air injection, stock, and enriched CNG fueling
Grahic Jump Location
NOx concentration in ppm and brake torque as functions of time for gasoline and CNG fueling, after catalyst sampling, 0 s electric catalyst heating, without secondary air injection, stock, and enriched CNG fueling

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