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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

Figures

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Transient test cycle speed and load specifications
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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
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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
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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
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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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