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Application of Catalyzed Hydrocarbon Traps to Reduce Hydrocarbon Emissions from Ethanol Flex-Fuel Vehicles
Technical Paper
1999-01-3624
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Catalyzed hydrocarbon traps have shown promise in reducing cold-start tailpipe hydrocarbon emissions from gasoline powered vehicles. In this paper, we report the use of catalyzed hydrocarbon trap technology to reduce the non-methane hydrocarbon emissions from a flex-fuel vehicle that can operate on fuel mixtures ranging from pure gasoline to 85% ethanol/15% gasoline. We have found that hydrocarbon traps show a substantially greater reduction in hydrocarbon emissions when used with ethanol fuel than with gasoline. We present laboratory and vehicle test results that show that tailpipe non-methane hydrocarbon emissions from a flex-fuel vehicle can be reduced by 43% when using 85% ethanol/15% gasoline fuel and 16% when using gasoline fuel from a baseline exhaust system using a three-way catalyst. These results were obtained using a catalyzed hydrocarbon trap specifically formulated for use with ethanol fuel.
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Citation
Goralski, C., Lupescu, J., Chanko, T., and Hepburn, J., "Application of Catalyzed Hydrocarbon Traps to Reduce Hydrocarbon Emissions from Ethanol Flex-Fuel Vehicles," SAE Technical Paper 1999-01-3624, 1999, https://doi.org/10.4271/1999-01-3624.Also In
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