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Method and system for determining final desired wheel power in a hybrid electric vehicle powertrain

  • US 7,617,893 B2
  • Filed: 03/02/2006
  • Issued: 11/17/2009
  • Est. Priority Date: 08/02/2005
  • Status: Active Grant
First Claim
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1. A control method for determining a desired wheel power in a hybrid electric vehicle powertrain having an engine power source and an electric power source that includes a battery, an electric generator and an electric motor, one power source complementing the other to meet a driver demand for power at the vehicle wheels, the control method comprising the steps of:

  • measuring a driver demand for power and measuring actual engine power;

    subtracting actual engine power from the driver demand for power to determine desired battery power;

    filtering the desired battery power using a calibrated filter function to obtain a filtered desired battery power; and

    subtracting from the desired battery power the filtered desired battery power to obtain a profiled battery power modifier for use in determining a final desired wheel power.

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