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Wireless zoned particulate matter filter regeneration control system

United States Patent

October 4, 2011
View the Complete Patent at the US Patent & Trademark Office
An assembly includes a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and multiple zones. An absorbing layer absorbs microwave energy in one of N frequency ranges and is arranged with the upstream end. N is an integer. A frequency selective filter has M frequency selective segments and receives microwave energy in the N frequency ranges. M is an integer. One of the M frequency selective segments permits passage of the microwave energy in one of the N frequency ranges and does not permit passage of microwave energy in the other of the N frequency ranges.
Gonze; Eugene V. (Pinckney, MI), Paratore, Jr.; Michael J. (Howell, MI), Kirby; Kevin W. (Calabasas Hills, CA), Phelps; Amanda (Malibu, CA), Gregoire; Daniel J. (Thousand Oaks, CA)
GM Global Technology Operations LLC (
12/ 191,475
August 14, 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.