Patent ID: 7343735

Claim:
A method for regenerating an exhaust gas aftertreatment component of an internal combustion engine, the method comprising: determining an output torque of the engine, if the output torque is greater than a torque threshold, supplying a single quantity of fuel to the engine after combustion of a main quantity of fuel and prior to combustion of a next main quantity of fuel, if the output torque is not greater than the torque threshold, supplying a first quantity of fuel to the engine near an end of combustion of the main quantity of fuel and prior to combustion of the next main quantity of fuel followed by supplying a second quantity of fuel after combustion of the main quantity of fuel and prior to combustion of the next main quantity of fuel, determining a temperature associated with the aftertreatment component, determining a fuel adjustment value as a function of the temperature associated with the aftertreatment component and a target regeneration temperature for the aftertreatment component, and adjusting the single quantity of fuel by the fuel adjustment value if the output torque is greater than the torque threshold, and otherwise adjusting at least the second quantity of fuel by the fuel adjustment value.