Device For Predictively Determining Gear Ratio Changes in Automatic Transmissions

• US 20080319620A1
• Filed: 08/11/2006
• Published: 12/25/2008
• Est. Priority Date: 08/25/2005
• Status: Abandoned Application

• Current Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Deiss, Harald, Voss, Thomas, Fakler, Winfried
• Application Number:
  US12/064,758
• Publication Number:
  US 20080319620A1
• Time in Patent Office: Days
• US Class Current: 701/56
• 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 2061/0234 Adapting the ratios to special vehicle 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

A system for determining a gear ratio change in an automatic transmission of a motor vehicle, includes an electronic control unit, a device for acquiring information about a surroundings of the vehicle, a device for acquiring driver data and/or vehicle data, and a correction module connecting the electronic control unit to the transmission. The correction module is connected to the transmission, to the device for acquiring information about the surroundings, and to the device for acquiring driver data and/or vehicle data. In addition, a method for determining a gear ratio change in an automatic transmission of a motor vehicle using the devices of the system is provided.

Claims

1-12. -12. (canceled)

13. A system for determining a gear ratio change in an automatic transmission of a motor vehicle, comprising:

an electronic control unit;

a device for acquiring information about a surroundings of the vehicle;

a device for acquiring driver data and/or vehicle data;

a correction module connecting the electronic control unit to the transmission, the correction module connected to the transmission, to the device for acquiring information about the surroundings, and to the device for acquiring driver data and/or vehicle data.

14. The system as recited in claim 13, wherein the electronic control unit is configured to feed a first gear ratio suggestion to the correction module, wherein the correction module is configured to receive information about the surroundings from the device for acquiring information and to receive driver data and/or vehicle data from the device for acquiring driver data and/or vehicle data, and wherein the correction module is configured to forward a second gear ratio suggestion to the transmission.

15. The system as recited in claim 13, wherein the correction module includes a driving situation module configured to determine a future and/or current driving situation and a determination module configured to determine the second gear ratio suggestion.

16. The system as recited in claim 15, wherein the information about the surroundings, the first gear ratio suggestion and the driver data and/or vehicle data can be forwarded to the correction module, wherein the driving situation module is configured to forward data relating to a future and/or current driving situation to the determination module and wherein the determination module is configured to forward the second gear ratio suggestion to the transmission.

17. The system as recited in claim 15, wherein the correction module includes a driver preference module configured to recognize a driver preference and connected to the driving situation module and to the determination module.

18. The system as recited in claim 17, wherein the driving situation module is configured to forward data relating to the future and/or current driving situation to the driver preference module and wherein the driver preference module is configured to forward data relating to the driver preference to the determination module.

19. The system as recited in claim 13, wherein the electronic control unit is directly connectable to the transmission upon recognition of a malfunction.

20. The system as recited in claim 17, further comprising a bus-oriented connection connecting at least two of the device for acquiring driver data and/or vehicle data, the electronic control unit, the correction module, the device for acquiring information about the surroundings, the transmission, the driving situation module, the determination module, and the driver preference module.

21. The system as recited in claim 17, wherein at least two of the device for acquiring driver data and/or vehicle data, the electronic control unit, the correction module, the device for acquiring information about the surroundings, the transmission, the driving situation module, the determination module, and the driver preference module are connected wirelessly.

22. The system as recited in claim 21, wherein the at least two devices are connected by at least one of inductively and by radio.

23. A method for determining a gear ratio change in an automatic transmission of a motor vehicle, the method comprising:

feeding driver data and/or vehicle data to an electronic control unit;

determining a first gear ratio suggestion using the electronic control unit based on the driver data and/or vehicle data;

feeding the first gear ratio suggestion to a correction module disposed downstream of the electronic control unit;

receiving data relating to information about the surroundings and driver data and/or vehicle data into the correction module;

creating a second gear ratio suggestion using the correction module by either modifying or retaining the first gear ratio suggestion as a function of the incoming data; and

forwarding the second gear ratio suggestion to the transmission.

24. The method as recited in claim 23, further comprising:

determining a future driving situation in the driving situation module based on the information about the surroundings; and

forwarding the future driving situation to at least one of the determination module and the driver preference module.

25. The method as recited in claim 24, wherein the correction module includes a determination module and wherein the second gear ratio suggestion is computed by the determination module as a function of the recognized driving situation.