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Torque management algorithm for hybrid electric vehicles

  • US 7,295,902 B2
  • Filed: 04/30/2004
  • Issued: 11/13/2007
  • Est. Priority Date: 04/30/2004
  • Status: Expired due to Fees
First Claim
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1. A method for providing torque management in a hybrid electric vehicle, said hybrid electric vehicle including an engine, an electric motor and a battery, said method comprising:

  • determining a penalty factor value that influences the usage of the battery and affects a torque allocation between the engine and the motor;

    providing a requested vehicle torque value and a vehicle speed value;

    selecting an engine torque value;

    determining a fuel consumption value based on the engine torque value and the vehicle speed value;

    determining a change in the battery state of charge value based on a motor torque value and the vehicle speed value; and

    determining an optimal engine torque command from cost values based on the fuel consumption value, the change in the battery state of charge value and the penalty factor value.

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