Patent ID: 7865287
Filing Date: 2011-01-04
Classification: B60K,B60W,F16H,Y02T

Abstract:
1. Article of manufacture, comprising a storage medium having a machine-executable program encoded therein to operate a hybrid powertrain, the powertrain comprising an internal combustion engine, an energy storage system, an electric machine, and an electro-mechanical transmission, the energy storage system and electric machine electrically-operatively coupled for power flow therebetween; and, the engine, electric machine, and the electro-mechanical transmission mechanically-operatively coupled to transmit power therebetween to generate a power flow to an output member, the program comprising: code to determine an operator torque request; code to determine a preferred engine power and a corresponding preferred power flow from the energy storage system to the electric machine in response to the operator torque request; code to operate the engine to achieve the preferred engine power; code to operate the electric machine to meet the operator torque request when the engine is operated to achieve the preferred engine power; code to monitor actual power flow from the energy storage device to the electric machine during the operation; and, code to operate the engine to adjust engine power in response to a difference between the actual and preferred power flows from the energy storage device to the electric machine.