This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Tailpipe Emissions and Cold Start Performance of E85 Vehicles from the 2000 Ethanol Challenge
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 05, 2001 by SAE International in United States
Annotation ability available
Event: SAE 2001 World Congress
The transportation industry has been investigating ethanol as an alternative fuel for many years. Ethanol provides a clean alternative to gasoline, though widespread use of this fuel has been limited due to a number of technical challenges, such as poor cold-start performance and reduced vehicle range, and economic competitiveness with gasoline. To address the technical issues surrounding the use of ethanol, a group of university engineering teams were selected to participate in the Ethanol Vehicle Challenge by converting 1999 Chevrolet Silverado trucks to dedicated E85 operation (85% ethanol and 15% gasoline). The goals of the Ethanol Vehicle Challenge concentrated on significantly lowering emissions and improving the cold-start performance, fuel efficiency and overall vehicle performance of the trucks. This report examines the emissions and cold-start performance results from the competition and the approaches taken by the teams to address these issues.
In May 2000, the Challenge vehicles underwent emissions testing at Environment Canada's Environmental Technology Centre in Ottawa, Ontario, Canada. The vehicles were placed on chassis dynamometers and tested according to the Federal Test Procedure 75. Exhaust emissions were collected and analyzed for nitrogen oxides, carbon monoxide, carbon dioxide, ethanol, aldehydes, and non-methane hydrocarbons. Teams incorporated novel approaches to changing the fuel delivery system to improve the vehicle's power, fuel economy, and emissions. The technologies that demonstrated an impact on emission reductions were secondary air injection, phase change material insulated catalytic converters, PCM adjustments, and EGR. These developments led one team to achieve the California Air Resources Board Ultra Low Vehicle Emissions level for light-duty vehicles and another team to demonstrate improved cold starting and better driveability compared to the stock vehicle operating on gasoline.
CitationAubin, K. and Smith, H., "Evaluation of Tailpipe Emissions and Cold Start Performance of E85 Vehicles from the 2000 Ethanol Challenge," SAE Technical Paper 2001-01-0678, 2001, https://doi.org/10.4271/2001-01-0678.
- Adler, U. 1986 Automotive Handbook 2nd Edition Girling P. Germany Robert Bosch GmbH 1985
- Degobert, P. 1995 Automobiles and Pollution Marshall N. Carr F. Pennsylvania Society of Automotive Engineers, Inc. 1992
- Schäfer, F. van Basshuysen, R. 1995 Reduced Emissions and Fuel Consumption in Automobile Engines Stähle J. New York Springer - Verlag/Wien 1993
- Toyota Safety and Environment Information: The Relationship Between Air Pollution and the Automobile 1995 Toyota
- California Environmental Protection Agency: Air Resources Board 1993 Nov. Acetaldehyde as a Toxic Air Contaminant 2000 July 19
- Canadian Renewable Fuels Association 2000 Aug 2 Environmental Effects of Ethanol and Gasoline 2000 Aug. 28
- Environment Canada 1998 Apr. 1 Report to the Canadian Council of Ministers of the Environment by the Task Force on Cleaner Vehicles and Fuels 2000 July 19