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Generator powered electrically heated diesel particulate filter

United States Patent

March 18, 2014
View the Complete Patent at the US Patent & Trademark Office
A control circuit for a vehicle powertrain includes a switch that selectivity interrupts current flow between a first terminal and a second terminal. A first power source provides power to the first terminal and a second power source provides power to the second terminal and to a heater of a heated diesel particulate filter (DPF). The switch is opened during a DPF regeneration cycle to prevent the first power source from being loaded by the heater while the heater is energized.
Gonze; Eugene V. (Pinckney, MI), Paratore, Jr.; Michael J. (Howell, MI)
GM Global Technology Operations LLC (
12/ 016,456
January 18, 2008
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.