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Air toxic emissions from passenger cars operating on ethanol blend gasoline
Citation:
LONG, T., R. Snow, J. S. HERRINGTON, M. D. HAYS, AND R. W. BALDAUF. Air toxic emissions from passenger cars operating on ethanol blend gasoline. In Proceedings, 104th AWMA Conference, Orlando, FL, June 21 - 24, 2011. AWMA, Pittsburgh, PA, 3,674 (4 vol), (2011).
Impact/Purpose:
symposium paper
Description:
Emissions of gaseous and particulate contaminants have been characterized during the operation of two flex-fuel and one non-flex-fueled light-duty vehicle. These vehicles were operated on a chassis dynamometer using a driving cycle representative of urban conditions while burning conventional gasoline (0% ethanol; E0), 10% ethanol gasoline (E10), and 85% ethanol gasoline (E85). The chassis dynamometer is housed in an environmentally control chamber, and the vehicles were operated at 20 arid 75 degrees Fahrenheit for all vehicle and fuel combinations. Exhaust emissions were characterized for criteria pollutants (CO, NOx, PM2.5), VOC and carbonyl air toxics (e.g., benzene, toluene, xylenes, formaldehyde, acetaldehyde, acrolein), greenhouse gases (CO2, methane), and particulate matter components (e.g., mass, carbon content, PARs). Results show the trends in vehicle emissions for these measured pollutants under the varying vehicle technology, fuel, and temperature combinations. This presentation will describe the overall project and present results of the criteria, air toxic, and greenhouse gas pollutant measurements for the multiple testing parameters. The presentation will also discuss potential implications of these results to urban and regional air quality impacts.
