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ELECTRICALLY HEATED DIESEL PARTICULATE FILTER (DPF)

United States Patent Application

20100095657
A1
View the Complete Application at the US Patent & Trademark Office
A diesel particulate filter assembly includes a diesel particulate filter (DPF) and an electric heater that is integrally formed at an upstream end of the DPF. The electric heater includes a heating substrate and a resistive heating element. The heating substrate includes a central region and a boundary region around the central region. The resistive heating element includes a plurality of conductive portions. Adjacent ones of the conductive portions in the central region form a first spacing. Adjacent ones of the conductive portions in the boundary region form a second spacing. The second spacing is smaller than the first spacing.
Gonze, Eugene V. (Pinckney, MI), Paratore, JR., Michael J. (Howell, MI), Chapman, Mark R. (Brighton, MI)
GM GLOBAL TECHNOLOGY OPERATIONS, INC. (Detroit MI)
12/ 255,035
October 21, 2008
STATEMENT OF GOVERNMENT RIGHTS [0001] 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.