Skip to Content
Find More Like This
Return to Search

Overlap zoned electrically heated particulate filter

United States Patent

7,981,198
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
20090071338
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.