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System and method for adjusting the fuel economy range calculation for flex fuel vehicles

  • US 7,219,539 B1
  • Filed: 04/06/2006
  • Issued: 05/22/2007
  • Est. Priority Date: 04/06/2006
  • Status: Active Grant
First Claim
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1. A method for calculating the mileage range for a vehicle having a fuel tank, the method comprising:

  • obtaining a current fuel parameter value corresponding to fuel in the fuel tank after a refueling event;

    obtaining a past fuel parameter value corresponding to fuel in the fuel tank prior to the refueling event;

    calculating a scale factor based on the current fuel parameter value and the past fuel parameter value;

    scaling a past fuel consumption value using the scale factor to obtain an adjusted fuel consumption value; and

    generating an updated mileage range value based on the adjusted fuel consumption value.

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