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Method for controlling a hybrid electric vehicle

  • US 7,206,687 B1
  • Filed: 04/06/2006
  • Issued: 04/17/2007
  • Est. Priority Date: 04/06/2006
  • Status: Active Grant
First Claim
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1. A method for controlling a hybrid electric vehicle having a primary power source and a secondary power source comprising:

  • estimating the power capability of the primary power source;

    obtaining a driver power command;

    establishing a primary power demand for the primary power source, a secondary power demand for the secondary power source, and a desired power balance between the primary power demand and the secondary power demand;

    calculating a system power capability based on the desired power balance and the estimated power capability of the primary power source;

    determining if the driver power command exceeds the system power capability;

    limiting the driver power command if the driver power command exceeds the system power capability; and

    executing the limited driver power command.

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