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CONTINUOUSLY REGENERATING PARTICULATE FILTER FOR INTERNAL COMBUSTION ENGINE

United States Patent Application

20090077954
A1
View the Complete Application at the US Patent & Trademark Office
An internal combustion engine system having a non-catalyzed particulate filter receiving products of combustion at a temperature of frequently above 600.degree. C. and an excess of oxygen of between 0.5 and 0.8% from a stoichiometric diesel engine. A NO.sub.x reduction catalyst is positioned downstream of the particulate filter. The engine system may include a turbocharger and the particulate filter and NO.sub.x reduction catalyst may be positioned either upstream of the turbine or downstream of the turbine or alternatively the particulate filter upstream of the turbine and the NO.sub.x reduction catalyst downstream of the turbine.
Winsor, Richard E. (Waterloo, IA), Baumgard, Kirby J. (Cedar Falls, IA), Nevin, Ryan M. (Waterloo, IA), Huynh, Cuong T. (Independence, IA), Lohmann, Craig W. (Denver, IA), Holthaus, Brian E. (Cedar Falls, IA)
11/ 859,936
September 24, 2007
GOVERNMENT RIGHTS IN PATENT [0001] This invention was made with Government support under contract DE-FC26-05NT42416 awarded by the Department of Energy. The U.S. government may have certain rights in this invention.