Journal
ATMOSPHERIC ENVIRONMENT
Volume 42, Issue 6, Pages 1349-1358Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2007.10.075
Keywords
carbonyls; exhaust emissions; ethanol-blended gasoline; biodiesel
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Detailed carbonyls emissions from ethanol-blended gasoline (containing 10% v/v, ethanol, E-10) and biodiesel-ethanol-diesel (BE-diesel) were carefully investigated on an EQ49li gasoline engine equipped with a three-way-catalyst (TWC) and a Commins-4B diesel engine. In engine-out emissions for the gasoline engine, total carbonyls from E-10 varied in the range of 66.7-99.4 mg kW(-1) h(-1), which was 3.1-8.2% less than those from fossil gasoline (E-0). In tailpipe emissions, total carbonyls from E-10 varied in the range of 9.2-20.7 mg kW(-1) h(-1), which were 3.0-61.7% higher than those from E-0. The total carbonyls emissions from BE-diesel were 1-22% higher than those from diesel at different engine operating conditions. Compared with fossil fuels, E-10 can slightly reduce CO emission, and BE-diesel can substantially decrease PM emission, while both alternative fuels increased slightly NOx emission. (C) 2007 Elsevier Ltd. All rights reserved.
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