Method for operating an engine in a hybrid powertrain system

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Electric vehicle

Reexamination Certificate

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Details

C180S065275, C180S065265

Reexamination Certificate

active

08010247

ABSTRACT:
An engine and an electric machine are operative to communicate tractive power with a transmission device to control output power to an output member. The electric machine is electrically coupled to an energy storage device. A method for controlling the engine and electric machine includes monitoring an operator request for power, monitoring a state of charge of the energy storage device, determining an operating cost for each of a plurality of candidate engine operating points based on the operator request for power and the state of charge of the energy storage device; and operating the engine at the candidate engine operating point having a preferred operating cost.

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