Navigation system having means for determining a route with optimized consumption
First Claim
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1. A navigation system for a motor vehicle, comprising:
- an input unit operatively configured to receive a user input defining a maximum travel time for a journey from a first location to a second location;
a position-determining unit configured to determine a current position of the motor vehicle;
an output unit for outputting travel instructions which are matched to a current position of the motor vehicle; and
a central processing unit operatively coupled to said input unit, said position-determining unit and said output unit and operatively configured to calculate at least a first route between the first location and the second location by reference to map data containing information for determining a predicted fuel consumption for the route, such that the maximum travel time is not exceeded and the anticipated fuel consumption is minimized.
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Abstract
A navigation system of a motor vehicle has an input unit, a position-determining unit, a central processor unit (CPU) for calculating a route between a first and a second location by reference to map data which contains information for determining a predicted fuel consumption for the route, and an output unit for outputting travel instructions which are matched with the current position of the vehicle. A maximum travel time for a journey from the first location to the second location is predefined by a user using the input unit and the route is determined such that the predefined maximum travel time is not exceeded, and the anticipated fuel consumption is minimized.
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Citations
13 Claims
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1. A navigation system for a motor vehicle, comprising:
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an input unit operatively configured to receive a user input defining a maximum travel time for a journey from a first location to a second location; a position-determining unit configured to determine a current position of the motor vehicle; an output unit for outputting travel instructions which are matched to a current position of the motor vehicle; and a central processing unit operatively coupled to said input unit, said position-determining unit and said output unit and operatively configured to calculate at least a first route between the first location and the second location by reference to map data containing information for determining a predicted fuel consumption for the route, such that the maximum travel time is not exceeded and the anticipated fuel consumption is minimized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining a route between a starting point and a destination by reference to road map data which includes road classes, topological properties and speed restrictions, comprising the steps of:
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calculating routes between the starting point and the destination whose anticipated travel time is shorter than a predefined input defining a maximum travel time value between the starting point and the destination; determining a fuel consumption for the calculated routes; and selecting the route with the lowest fuel consumption. - View Dependent Claims (10, 11, 12, 13)
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Specification