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VEHICLE NAVIGATION SYSTEM

  • US 20160084665A1
  • Filed: 12/07/2015
  • Published: 03/24/2016
  • Est. Priority Date: 09/08/2010
  • Status: Active Grant
First Claim
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1. A vehicle navigation system, comprising:

  • a database configured to store map data having links corresponding to road segments and attributes associated with the links, the map data having at least some links associated with a rolling resistance attribute and a grade resistance attribute, the rolling resistance attribute for a link having a rolling resistance attribute value (gcos) proportional to a sum or an integral over the cosine of the angles of elevation (δ

    ) along the road segment, the grade resistance attribute for a link having a grade resistance attribute value (gsin) proportional to a sum or an integral over the sine of the angles of elevation (δ

    ) along the road segment;

    a processing unit configured to estimate an energy consumption of the vehicle for a link using at least one of the rolling resistance attribute and the grade resistance attribute retrieved from the database for the link.

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