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NAVIGATION SYSTEM AND METHOD OF USING VEHICLE STATE INFORMATION FOR ROUTE MODELING

  • US 20120179315A1
  • Filed: 01/11/2011
  • Published: 07/12/2012
  • Est. Priority Date: 01/11/2011
  • Status: Active Grant
First Claim
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1. A vehicle comprising:

  • a powertrain controller;

    an energy storage system (ESS);

    a traction motor that is energized via the ESS, and that is configured to propel the vehicle;

    at least one electrical device, including a heating, ventilation, and air conditioning (HVAC) system; and

    a navigation system in communication with a geospatial database, and configured to generate a recommended travel route between a route origin and a route destination using mapping data from the geospatial database;

    wherein the navigation system is configured to;

    receive, as vehicle state information, a current powertrain state from the controller and a current power load from the at least one electrical device, wherein the current powertrain state includes a state of charge of the ESS;

    select, using the vehicle state information, between a charge-depleting costing model that uses the traction motor in a manner that depletes the ESS below a calibrated threshold state of charge, and a charge-sustaining costing model that uses the traction motor in a manner that maintains the state of charge of the ESS above the calibrated threshold;

    generate the recommended travel route via the navigation system using the selected costing model; and

    display the recommended travel route via a display screen.

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