Skip to Content
Find More Like This
Return to Search

Overlap zoned electrically heated particulate filter

United States Patent

July 19, 2011
View the Complete Patent at the US Patent & Trademark Office
A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.
Gonze; Eugene V. (Pinckney, MI), Chapman; Mark R. (Brighton, MI)
GM Global Technology Operations LLC (
11/ 972,716
January 11, 2008
STATEMENT OF GOVERNMENT RIGHTS This disclosure 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 disclosure.