Patent ID: 9239243
Filing Date: 2016-01-19
CPC Classification: G01C,G01F,G06F

Claim Text:
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 curvature attribute and a mean absolute curvature ( a processing unit configured to estimate an energy consumption cost factor of the vehicle for a link using the curvature attribute retrieved from the database for the link, and using at least one of (i) vehicle velocity (ii) driver vehicle operating behavior (iii) vehicle fuel consumption (iv) vehicle coefficient of drag or (v) vehicle rolling resistance coefficient or (vi) grade resistance coefficient, where the sum or the integral are a weighted sum or a weighted integral in which the curvature values are weighted by a weighting factor, and where the weighting factor is configured to consider the influence of the curvature on energy consumption.