Electrically Heated Catalysts for Cold-Start Emission Control on Gasoline- and Methanol-Fueled Vehicles

[+] Author and Article Information
M. J. Heimrich

Department of Emissions Research, Southwest Research Institute, San Antonio, TX 78228

S. Albu

State of California Air Resources Board, El Monte, CA 91731

M. Ahuja

State of California Air Resources Board, Sacramento, CA 95814

J. Eng. Gas Turbines Power 114(3), 496-501 (Jul 01, 1992) (6 pages) doi:10.1115/1.2906616 History: Received September 29, 1991; Online April 24, 2008


Cold-start emissions from current technology vehicles equipped with catalytic converters can account for over 80 percent of the emissions produced during the Federal Test Procedure (FTP). Excessive pollutants can be emitted for a period of one to two minutes following cold engine starting, partially because the catalyst has not reached an efficient operating temperature. Electrically heated catalysts, which are heated prior to engine starting, have been identified as a potential strategy for controlling cold-start emissions. This paper summarizes the emission results of three gasoline-fueled and three methanol-fueled vehicles equipped with electrically heated catalyst systems. Results from these vehicles demonstrate that heated catalyst technology can provide FTP emission levels of nonmethane organic gases (NMOG), carbon monoxide (CO), and oxides of nitrogen (NOx ) that show promise of meeting the Ultra-Low Emission Vehicle (ULEV) standards established by the California Air Resources Board.

Copyright © 1992 by The American Society of Mechanical Engineers
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