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Selective catalyst reduction light-off strategy

United States Patent

October 18, 2011
View the Complete Patent at the US Patent & Trademark Office
An emissions control system includes a temperature determination module and an emissions control module. The temperature determination module determines a first temperature of a heater element of a diesel particulate filter (DPF) assembly in an exhaust system and determines a second temperature of a catalyst of the DPF assembly. The emissions control module selectively activates the heater element, selectively initiates a predefined combustion process in an engine based upon the first temperature, and selectively starts a reductant injection process based upon the second temperature.
Gonze; Eugene V. (Pinckney, MI), Paratore, Jr.; Michael J. (Howell, MI)
GM Global Technology Operations LLC (
11/ 946,256
November 28, 2007
STATEMENT OF GOVERNMENT RIGHTS This invention was produced pursuant to the 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.