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DPF heater attachment mechanisms

United States Patent

April 26, 2011
View the Complete Patent at the US Patent & Trademark Office
An exhaust filter system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A fastener limits expansion movement of the heating element relative to the PF.
Gonze; Eugene V. (Pinckney, MI), Ament; Frank (Troy, MI), Paratore, Jr.; Michael J. (Howell, MI)
GM Global Technology Operations, Inc. (
11/ 673,917
February 12, 2007
STATEMENT OF GOVERNMENT RIGHTS Certain of the subject matter of the present application was developed under Contract Number DE-FC-04-03 AL67635 awarded by the Department of Energy. The U.S. government has certain rights in this invention.