Patent ID: 8935027
Filing Date: 2015-01-13
Classification: B60W,F01N,Y02T

Abstract:
1. A control module implemented method for effecting light-off of a catalytic device in an exhaust aftertreatment system fluidly coupled to an internal combustion engine of a multi-mode vehicular powertrain system including an electric machine electrically coupled to a battery, the method comprising: monitoring a user interface and determining, by processor, an output torque request for the multi-mode vehicular powertrain system; determining, by a processor, a preferred engine operating point having a minimum engine operating cost within a predetermined engine operating region for catalyst light-off; and when a state-of-charge of the battery is not approaching a predetermined state-of-charge limit, the control module: when a state-of-charge of the battery is approaching the predetermined state-of-charge limit, the control module: