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Electrically heated particulate filter embedded heater design

United States Patent

July 1, 2014
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 and wherein an upstream surface of the particulate filter includes machined grooves. A grid of electrically resistive material is inserted into the machined grooves of the exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF.
Gonze; Eugene V. (Pinckney, MI), Chapman; Mark R. (Brighton, MI)
GM Global Technology Operations LLC (N/A)
11/ 876,121
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.