Transmission systems and methods

• US 8,666,619 B2
• Filed: 05/24/2011
• Issued: 03/04/2014
• Est. Priority Date: 03/25/2011
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Benson, Christopher G., Malik, Matthew R., Bezdek, Steven Mark, Philippart, Timothy P., Crisler, Martha A., Craig, Stonewall J.
• Primary Examiner(s): Black, Thomas
• Assistant Examiner(s): HUYNH, LUAT T
• Application Number:
  US13/114,438
• Publication Number:
  US 20120245811A1
• Time in Patent Office: 1,015 Days
• Field of Search: 701/51, 701 53- 60, 701 62- 64, 192/220.24, 192/220, 192/3.57, 477/155, 477/168, 477/152
• US Class Current: 701/55
• CPC Class Codes: F16H 2061/0053 Initializing the parameters of the controller
• CPC Class Codes: F16H 2061/0096 using a parameter map
• CPC Class Codes: F16H 2061/0258 Proportional solenoid valve
• CPC Class Codes: F16H 61/0251 Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals

Abstract

A method includes: receiving M solenoids, each marked with a unique one of M identifiers, where M is an integer greater than one; receiving M lookup tables associated with respective ones of the M identifiers, wherein each of the M lookup tables establishes a relationship between input current and output pressure for only one of the M solenoids; assembling a transmission with a selected one of the M solenoids; selecting one of the M lookup tables based on one of the M identifiers marked on the selected one of the M solenoids; storing the selected one of the M lookup tables in memory of a transmission control module of a vehicle that is assembled with the transmission; and controlling output pressure of the selected one of the M solenoids based on the selected one of the M lookup tables and the input current using the transmission control module.

Claims

1. A method comprising:

receiving M solenoids, each marked with a unique one of M identifiers, where M is an integer greater than one;

receiving M lookup tables associated with respective ones of the M identifiers, wherein each of the M lookup tables establishes a relationship between input current and output pressure for only one of the M solenoids;

assembling a transmission with a selected one of the M solenoids;

selecting one of the M lookup tables based on one of the M identifiers marked on the selected one of the M solenoids;

storing the selected one of the M lookup tables in memory of a transmission control module of a vehicle that is assembled with the transmission; and

controlling output pressure of the selected one of the M solenoids based on the selected one of the M lookup tables and the input current using the transmission control module.

2. The method of claim 1 further comprising assembling the vehicle with the transmission control module fixed to the vehicle externally to a housing of the transmission.

3. The method of claim 1 further comprising storing the selected one of the M lookup tables in the memory of the transmission control module based on a location of the selected one of the M solenoids in one of N available solenoid locations within the transmission,

wherein N is an integer greater than 1.

4. The method of claim 3 further comprising controlling the output pressure of the selected one of the M solenoids further based on the location using the transmission control module.

5. The method of claim 1 further comprising determining the one of the M identifiers marked on the selected one of the M solenoids based on a second unique identifier of the transmission.

6. The method of claim 5 further comprising determining a location of the selected one of the M solenoids within the transmission based on the second unique identifier of the transmission,

wherein the location is one of N available solenoid locations within the transmission and N is an integer greater than 1.

7. The method of claim 6 further comprising:

storing the selected one of the M lookup tables in the memory of the transmission control module based on the location of the selected one of the M solenoids; and

controlling the output pressure of the selected one of the M solenoids further based on the location using the transmission control module.

8. The method of claim 6 further comprising selectively associating the one of the M lookup tables, the location of the selected one of the M solenoids, and the one of the M identifiers with the second unique identifier of the transmission in a storage module that is external to the vehicle.

9. The method of claim 8 further comprising:

assembling the vehicle with the transmission; and

associating the second unique identifier of the transmission with a third unique identifier marked on the vehicle.

10. The method of claim 1 further comprising:

generating additional data for controlling the selected one of the M solenoids;

storing the additional data in the memory of the transmission control module; and

controlling the output pressure of the selected one of the M solenoids further based on the additional data using the transmission control module.

11. A method comprising:

receiving data at a storage module indicating a unique identifier marked on a solenoid;

receiving a lookup table at the storage module that is associated with the unique identifier and that establishes a relationship between input current and output pressure for the solenoid;

storing the lookup table from the storage module in memory of a transmission control module of a vehicle; and

controlling output pressure of the solenoid within a transmission of the vehicle based on the lookup table using the transmission control module.

12. The method of claim 11 further comprising obtaining the lookup table from the storage module based on the unique identifier.

13. The method of claim 11 further comprising assembling the vehicle with the transmission control module fixed to the vehicle externally to a housing of the transmission.

14. The method of claim 11 further comprising storing the lookup table in the memory of the transmission control module based on a location of the solenoid in one of N available solenoid locations within the transmission,

wherein N is an integer greater than 1.

15. The method of claim 14 further comprising controlling the output pressure of the solenoid further based on the location using the transmission control module.

16. The method of claim 11 further comprising:

determining the unique identifier marked on the solenoid based on a second unique identifier marked on the transmission; and

obtaining the lookup table from the storage module based on the unique identifier of the solenoid.

17. The method of claim 16 further comprising:

determining a third unique identifier marked on the vehicle; and

associating the second unique identifier of the transmission with the third unique identifier of the vehicle in the storage module.

18. The method of claim 17 further comprising:

determining a fourth unique identifier marked on the transmission control module; and

associating the fourth unique identifier of the transmission control module with the third and second unique identifiers in the storage module.

19. The method of claim 11 further comprising:

generating additional data for controlling the solenoid; and

associating the additional data with the unique identifier of the solenoid in the storage module.

20. The method of claim 19 further comprising:

storing the additional data in the memory of the transmission control module; and

controlling the output pressure of the solenoid further based on the additional data using the transmission control module.