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Electrically heated particulate filter using catalyst striping

United States Patent

July 16, 2013
View the Complete Patent at the US Patent & Trademark Office
An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF.
Gonze; Eugene V. (Pinckney, MI), Paratore, Jr.; Michael J. (Howell, MI), Ament; Frank (Troy, MI)
GM Global Technology Operations LLC (
11/ 876,136
October 22, 2007
STATEMENT OF GOVERNMENT RIGHTS This invention was produced pursuant to U.S. Government Contract No. DE-FC-04-03 AL67635 with the Department of Energy (DoE). The U.S. Government has certain rights in this invention.