Gear shift control for automatic transmissions in motor vehicles having an electronic control unit

• US 5,911,771 A
• Filed: 09/30/1996
• Issued: 06/15/1999
• Est. Priority Date: 09/29/1995
• Status: Expired due to Term

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Reichart, Guenter, Braess, Hans-Hermann
• Primary Examiner(s): Wright, Dirk
• Application Number:
  US08/723,120
• Time in Patent Office: 988 Days
• Field of Search: 477/97, 364/424.094, 701/65, 701/87, 701/95, 701/117
• US Class Current: 701/65
• CPC Class Codes: B60W 2552/05 Type of road, e.g. motorways, local streets, paved or unpaved roads
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: F16H 2059/666 Determining road conditions by using vehicle location or position, e.g. from global navigation systems [GPS]
• CPC Class Codes: F16H 59/60 Inputs being a function of ambient conditions
• CPC Class Codes: F16H 59/66 Road conditions, e.g. slope, slippery
• CPC Class Codes: F16H 61/0213 characterised by the method for generating shift signals

Abstract

In the case of a gear shift control for automatic transmissions in motor vehicles having an electronic control unit which determines the gear change as a function of operating parameters of the vehicle, the electronic control unit controls the gear changes also as a function of input signals which are obtained from information generated outside the vehicle and which indicate environmental conditions of the vehicle.

Claims

1. A gear shift control for an automatic transmission in a motor vehicle, comprising:

an electronic control unit which determines gear changes as a function of operating parameters of the vehicle, wherein said electronic control unit directly controls the gear changes also as a function of input signals obtained from information which reflects environmental conditions with respect to the vehicle, which information is generated outside of the vehicle.

2. The gear shift control according to claim 1, wherein one of the input signals indicates a type of road on which the vehicle is situated.

3. The gear shift control according to claim 1, wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated.

4. The gear shift control according to claim 2, wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated.

5. The gear shift control according to claim 1, wherein said information reflects environmental conditions to be expected at a future time.

6. The gear shift control according to claim 1, wherein said information generated outside of the vehicle is generated by a satellite network.

7. The gear shift control according to claim 1, wherein said information generated outside of the vehicle is generated by a radio data system.

8. The gear shift control according to claim 1, wherein said information generated outside of the vehicle is generated by a mobile radio unit.

9. The gear shift control according to claim 1, wherein said information generated outside of the vehicle is generated by an electronic traffic sign.

10. The gear shift control according to claim 1, wherein said information generated outside of the vehicle is generated by a vehicle navigation map, said map being stored in a vehicle navigation system on board the vehicle.

11. A gear shift control for an automatic transmission in a motor vehicle, comprising:

an electronic control unit which determines gear changes as a function of operating parameters of the vehicle, wherein said electronic control unit directly controls the gear changes also as a function of input signals obtained from information which reflects environmental conditions with respect to the vehicle, which information is generated outside of the vehicle; and

wherein one of the input signals indicates a traffic situation at least on a road on which the vehicle is situated.

12. The gear shift control according to claim 11, wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated.

13. The gear shift control according to claim 11, wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

14. The gear shift control according to claim 12, wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

15. A gear shift control for an automatic transmission in a motor vehicle, comprising:

an electronic control unit which determines gear changes as a function of operating parameters of the vehicle, wherein said electronic control unit directly controls the gear changes also as a function of input signals obtained from information which reflects environmental conditions with respect to the vehicle, which information is generated outside of the vehicle;

wherein one of the input signals indicates a type of road on which the vehicle is situated; and

wherein one of the input signals indicates a traffic situation at least on a road on which the vehicle is situated.

16. The gear shift control according to claim 15, wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated.

17. The gear shift control according to claim 15 wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

18. The gear shift control according to claim 16, wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

19. A gear shift control for an automatic transmission in a motor vehicle, comprising:

an electronic control unit which determines gear changes as a function of operating parameters of the vehicle, wherein said electronic control unit directly controls the gear changes also as a function of input signals obtained from information which reflects environmental conditions with respect to the vehicle, which information is generated outside of the vehicle; and

wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

20. The gear shift control according to claim 19, wherein one of the input signals indicates a type of road on which the vehicle is situated.

21. The gear shift control according to claim 20, wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated.

22. A gear shift control for an automatic transmission in a motor vehicle, comprising:

an electronic control unit which determines gear changes as a function of operating parameters of the vehicle, wherein said electronic control unit directly controls the gear changes also as a function of input signals obtained from information which reflects environmental conditions with respect to the vehicle, which information is generated outside of the vehicle;

wherein one of the input signals indicates a weather situation in a close vicinity on a road on which the vehicle is situated; and

wherein one of the input signals indicates a location marking in a close vicinity of a road on which the vehicle is situated.

23. A method of controlling gear changes for an automatic transmission in a motor vehicle, the method comprising the steps of:

inputting operating parameters of the vehicle to an electronic control unit;

inputting to the electronic control unit input signals obtained from information reflecting environmental conditions with respect to the vehicle, said information being generated outside of the vehicle; and

controlling gear changes for the automatic transmission in the motor vehicle with the electronic control unit as a function of the operating parameters of the vehicle and also the input signals obtained from information reflecting the environmental conditions with respect to the vehicle.