The Seasonal Impact of Blending Oxygenated Organics with Gasoline on Motor Vehicle Tailpipe and Evaporative Emissions - Part II 902129
Evaporative and tailpipe emissions from a 1987 GM Corsica with adaptive learning closed loop control were measured with six fuels and four temperatures. Measured emissions were total (THC) and speciated hydrocarbons, aldehydes, ethanol, MTBE, benzene, 1,3-butadiene, CO, and NOx.
Tests were also performed to determine the effect of air conditioning (AC) and oxygen sensor failure. In general, AC reduced Highway Fuel Economy emissions, increased FTP emissions, and reduced fuel economy for both test cycles. Oxygen sensor malfunction increased tailpipe emissions and fuel economy.
Higher levels of regulated tailpipe emissions were generally produced at the low test temperature. None of the fuels tested appeared to offer a consistent reduction in tailpipe THC and CO emissions under the conditions tested.
Citation: Stump, F., Knapp, K., Ray, W., Burton, C. et al., "The Seasonal Impact of Blending Oxygenated Organics with Gasoline on Motor Vehicle Tailpipe and Evaporative Emissions - Part II," SAE Technical Paper 902129, 1990, https://doi.org/10.4271/902129. Download Citation
Fred D. Stump, Kenneth T. Knapp, William D. Ray, Charles Burton, Richard Snow
US Environmental Protection Agency Research Triangle Park, NC, NSI, Inc. Research Triangle Park, NC
International Fuels & Lubricants Meeting & Exposition
SAE Transactions Journal of Fuels and Lubricants-V99-4