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Electrically heated particulate filter regeneration using hydrocarbon adsorbents

United States Patent

February 1, 2011
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 selectively heats exhaust passing through the upstream end to initiate combustion of particulates within the PF. A hydrocarbon adsorbent coating applied to the PF releases hydrocarbons into the exhaust to increase 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, Inc. (
11/ 876,171
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.