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CONSISTENT RANGE CALCULATION IN HYBRID VEHICLES WITH HYBRID AND PURE BATTERY ELECTRIC PROPULSION

  • US 20120239283A1
  • Filed: 03/14/2011
  • Published: 09/20/2012
  • Est. Priority Date: 03/14/2011
  • Status: Active Grant
First Claim
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1. A method for determining fuel consumption and travel range of an electric hybrid vehicle, said vehicle including a main power source and a rechargeable electric energy source, said method comprising:

  • determining an actual consumed fuel value that identifies how much actual fuel is being used by the main power source;

    determining a virtual consumed fuel flow value that is a function of an output current of the rechargeable electric energy source;

    determining a total consumed fuel value by adding the actual consumed fuel value and the virtual consumed fuel flow value;

    determining a fuel consumption value indentifying the fuel consumed by the vehicle by dividing the total consumed fuel value by a distance the vehicle has travelled;

    determining an actual available fuel value of how much actual fuel is available on the vehicle;

    determining a virtual available fuel value as a function of the state-of-charge of the rechargeable electric energy source;

    adding the actual available fuel value and the virtual available fuel value to get a total available fuel value; and

    dividing the total available fuel value by the fuel consumption value to get the travel range of the vehicle.

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