Apparatus and Method for Identifying in Advance Overrun Phases of a Vehicle

• US 20100179726A1
• Filed: 01/14/2010
• Published: 07/15/2010
• Est. Priority Date: 07/16/2007
• Status: Active Grant

• Current Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Original Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Inventors: LEINUNG, Andreas
• Granted Patent: US 8,280,582 B2
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60W 2510/0647 Coasting condition
• CPC Class Codes: B60W 2530/18 Distance travelled
• CPC Class Codes: B60W 2552/25 Road altitude
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/18072 Coasting

Abstract

A device is provided for identifying overrun phases of a vehicle in advance. The device includes at least one processing unit, which processes altitude position data of a route that is traveled by a vehicle or will be traveled by a vehicle and calculates a prediction of the probable occurrence of future overrun phases of the vehicle, taking into consideration the altitude position data.

Claims

1. An apparatus for identifying overrun condition phases of a vehicle, the apparatus comprising:

a processing unit operatively configured to receive and process altitude position data of a section of road that is being traveled on or is to be traveled on by the vehicle, said processing unit calculating a prediction about a probable occurrence of future overrun condition phases of the vehicle taking into account the received altitude position data.

2. The apparatus according to claim 1, wherein the processing unit calculates a prediction indicating, in each case, an occurrence of probable future overrun condition phases along a segment of the road section lying ahead of the vehicle.

3. The apparatus according to claim 1, wherein the processing unit calculates in advance the prediction for, in each case, one segment of the road section having a predefined length, said segment of the road section lying directly ahead of the vehicle during a journey along the road section.

4. The apparatus according to claim 1, wherein the processing unit calculates a prediction indicating whether and where overrun condition phases occur on a road section or segment of a road section lying ahead of the vehicle.

5. The apparatus according to claim 1, wherein the prediction comprises indications about at least one of:

a start time, an end time, and a chronological duration of one or more overrun condition phases expected to be imminent.

6. The apparatus according to claim 1, wherein the processing unit is operatively configured to calculate, from the received altitude position data and from a travel direction of the vehicle along the road section, where negative gradients will occur in the travel direction on the road section or on a segment lying directly ahead of the vehicle of the road section.

7. The apparatus according to claim 1, wherein the processing unit is operatively configured to compare the duration of overrun condition phases that are expected to occur with a predefined minimum duration, and calculate a prediction that brings about a selective utilization exclusively of those overrun condition phases already started or imminent and for whose calculated duration is longer than the predefined minimum duration.

8. The apparatus according to claim 7, further comprising a memory that stores, as the predefined minimum duration for overrun condition phases to be utilized technically, a fixed limiting value or a limiting value dependent on vehicle parameters.

9. The apparatus according to claim 1, wherein the processing unit is operatively configured to compare a length of road sections having a negative gradient lying ahead with a predefined minimum length, and output prediction data permitting targeted utilization of overrun condition phases on only said road sections having the negative gradient and a length exceeding the predefined minimum length.

10. The apparatus according to claim 1, wherein the processing unit calculates, for an instantaneous overrun condition phase, a prediction about an expected remaining chronological duration of the instantaneous overrun condition phase.

11. The apparatus according to claim 10, wherein the processing unit generates a control signal for the instantaneous overrun condition phase, said control signal defining, as a function of the expected remaining chronological duration, whether or not technical utilization of the instantaneous overrun condition phase is to be used for at least one vehicle component.

12. The apparatus according to claim 11, wherein the processing unit generates a second control signal for an instantaneous overrun condition phase that has already occurred, said second control signal causing a technical utilization of the instantaneous overrun condition phase in at least one vehicle component when the expected remaining chronological duration exceeds a predefined limiting value.

13. The device according to claim 1, wherein the processing unit calculates a prediction about expected chronological durations of one or more overrun condition phases that are to occur in the future.

14. The apparatus according to claim 13, wherein the processing unit generates a control signal for one or more of the future overrun condition phases, said control signal as a function of the expected chronological duration of the overrun condition phases, defining in each case whether or not technical utilization of a respective overrun condition phase is to be used in at least one vehicle component.

15. The apparatus according to claim 14, wherein the processing unit generates in each case for the future overrun condition phases identified in advance, a control signal which, if the expected chronological duration exceeds a predefined limiting value, causes a technical utilization of the overrun condition phase in the at least one vehicle component.

16. The apparatus according to claim 1, wherein the processing unit calculates a chronological interval up to a start of an earliest future overrun condition phase having a duration expected to exceed a predefined minimum duration.

17. The apparatus according to claim 16, wherein, for at least one of instantaneous and future overrun condition phases having a chronological duration expected in each case to be shorter than the predefined minimum duration and which precede the calculated earliest future overrun condition phase having a longer duration than the predefined minimum duration, the processing unit prevents the technical utilization of such preceding overrun condition phases for vehicle components.

18. The apparatus according to claim 1, further comprising at least one vehicle component, said at least one vehicle component being controlled via the processing unit.

19. The apparatus according to claim 1, wherein, in order to calculate overrun condition phases in advance, the processing unit further calculates a prediction about an expected occurrence of future overrun condition phases of the vehicle as a function of location coordinates indicating a geographic location of the vehicle along the road section.

20. The apparatus according to claim 19, wherein the processing unit, for calculating the overrun condition phase in advance, continues processing current vehicle parameters, said current vehicle parameters comprising at least one of:

said altitude position data, said location coordinates, vehicle speed, wheel speeds, yaw rates, vehicle acceleration, a compressed air level of a vehicle brake system, a humidity level of a compressed air vessel or compressed air-treatment cartridge, an engine speed, an absolute value and/or sign of an engine torque, clutch data, gear speed date, vehicle retarder data, and an inter vehicle distance.

21. The apparatus according to claim 19, wherein said location coordinates indicate an instantaneous position of the vehicle traveling along the road section.

22. The apparatus according to claim 21, further comprising a navigation device operatively configured to receive the location coordinates, said navigation device transmitting said location coordinates to said processing unit.

23. The apparatus according to claim 22, further comprising a memory unit in which said altitude position data of the road section is stored.

24. The apparatus according to claim 22, wherein said navigation device also receives said altitude position data of the road section and transmits said altitude position data to said processing unit.

25. The apparatus according to claim 24, wherein said altitude position data comprise vertical position coordinates of points on the road section or segments of the road section.

26. The apparatus according to claim 18, further comprising a control unit operatively coupled to said processing unit, said control unit controlling the at least one vehicle component.

27. The apparatus according to claim 1, wherein said processing unit is operatively configured to output control signals based on said calculated prediction, said control signals being at least one of electrical, pneumatic, and optical control signals.

28. The apparatus according to claim 1, wherein said processing unit performs open-loop or closed-loop control of air pressure of a compressed air system of the vehicle, said compressed air system being coupled to said processing unit.

29. The apparatus according to claim 7, wherein the technical utilization of overrun condition phases is carried out such that during each technically utilized overrun condition phase, energy is at least briefly acquired from said overrun condition and/or stored in at least one vehicle component, or energy consumption of the at least one vehicle component is temporarily reduced during the overrun condition.

30. The apparatus according to claim 29, wherein the at least one vehicle component is one of:

a compressed air system, a compressed system component, a brake system, a brake system component, a dynamo, and a generator.

31. A method for operating a vehicle, the method comprising the acts of:

receiving altitude position data relative to a road section that is being traveled upon by the vehicle or is to be traveled upon by the vehicle; and

calculating in a processing unit a prediction about an expected occurrence of future overrun condition phases of the vehicle as a function of said altitude position data.

32. The method according to claim 31, wherein the calculating act calculates the prediction indicating in each case an occurrence of the expected future overrun condition phases along a segment of the road section that lies ahead.

33. The method according to claim 32, wherein the segment of the road section lying ahead has a predefined length.

34. The method according to claim 32, wherein the calculated prediction comprises indications about a start time, an end time, and/or a chronological duration of one or more of the overrun condition phases expected to occur along the segment of the road section lying ahead.