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Stripping ethanol from ethanol-blended fuels for use in NO.sub.x SCR

United States Patent

August 21, 2007
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NO.sub.x emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (and other lean-burn) engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.
Kass; Michael Delos (Oak Ridge, TN), Graves; Ronald Lee (Knoxville, TN), Storey; John Morse Elliot (Oak Ridge, TN), Lewis, Sr.; Samuel Arthur (Andersonville, TN), Sluder; Charles Scott (Knoxville, TN), Thomas; John Foster (Powell, TN)
U T Battelle, LLC (Oak Ridge, TN)
10/ 361,432
February 10, 2003
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with United States Government support under Contract No. DE-AC05-00OR 22725 between the United States Department of Energy and UT-Battelle, LLC, and the United States Government has certain rights in this invention.