METHOD FOR CALCULATING CONSUMPTION AND/OR A REMAINING RANGE OF A MOTOR VEHICLE AND MOTOR VEHICLE

• US 20130325403A1
• Filed: 11/14/2011
• Published: 12/05/2013
• Est. Priority Date: 11/19/2010
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Lange, Rainer, Harries, Matthias
• Granted Patent: US 8,825,443 B2
• Time in Patent Office: Days
• US Class Current: 702/181
• CPC Class Codes: G01C 21/34 Route searching; Route guidance
• CPC Class Codes: G01C 21/3453 Special cost functions, i.e. other than distance or default speed limit of road segments
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00
• CPC Class Codes: G06F 17/18 for evaluating statistical data , e.g. average values, frequency distributions, probability functions, regression analysis forecasting specially adapted for a specific administrative, business or logistic context G06Q10/04

Abstract

A method calculates a remaining range and/or consumption of a motor vehicle with an energy storage system for a drive which acts on at least one wheel of the motor vehicle. The remaining range and/or the consumption can be calculated in a first fashion by using a first algorithm and in a second fashion by using a second algorithm. The second fashion requires a higher degree of expenditure on calculation than the first fashion. Switching over between the first fashion and the second fashion occurs as a function of the energy stored in the energy storage system.

Claims

1-8. -8. (canceled)

9. A method for calculating a remaining range and/or a consumption of a motor vehicle with an energy storage system for a drive which acts on at least one wheel of the motor vehicle, comprising:

calculating the remaining range and/or the consumption in a first fashion by using a first algorithm;

calculating the remaining range and/or the consumption in a second fashion by using a second algorithm, the second fashion requiring a higher degree of expenditure on calculation than the first fashion,

switching over between the first fashion and the second fashion as a function of energy stored in the energy storage system, wherein

the first algorithm is an algorithm which is based on area segments with respectively assigned energy costs, and

the second algorithm is a Dijkstra algorithm, which is based on road segments, or an algorithm which is derived from the Dijkstra algorithm, the second algorithm having energy values as a cost function.

10. The method as claimed in claim 9, wherein the energy storage system comprises a fuel tank and/or a battery.

11. The method as claimed in claim 9, wherein if the energy stored in the energy storage system is less than a limiting value, the second algorithm is used, and otherwise the first algorithm is used.

12. The method as claimed in claim 11, wherein the limiting value is adapted as a function of a user input.

13. The method as claimed in claim 9, wherein

for switching over between the first fashion and the second fashion, a limiting value for energy stored in the energy storage system, is used, and

the limiting value is adapted as a function of a user input.

14. The method as claimed in claim 9, wherein

in a map a partial area which can be reached is determined from the remaining range of the motor vehicle, and

the partial area is displayed.

15. A motor vehicle comprising:

a calculation device to calculate a remaining range and/or consumption of the motor vehicle;

a drive which acts on at least one wheel of the motor vehicle; and

an energy storage system for the drive,

wherein the calculation device comprises;

a first calculation unit to calculate the remaining range and/or the consumption in a first fashion, the first calculation unit using a first algorithm which is based on area segments with respectively assigned energy costs;

a second calculation unit to calculate the remaining range and/or the consumption in a second fashion, the second fashion requiring a higher degree of expenditure on calculation than the first fashion, the second calculation unit using a second algorithm which is a Dijkstra algorithm based on road segments or an algorithm which is derived from the Dijkstra algorithm, the second algorithm using energy values as a cost function; and

a switching unit to switch over between the first fashion and the second fashion as a function of energy stored in the energy storage system.

16. The motor vehicle as claimed in claim 15, wherein

the energy storage system comprises a fuel tank and/or a battery.

17. The motor vehicle as claimed in claim 15, wherein the calculation device is part of a navigation system.