Method and system for controlling an automatic transmission using a GPS assist having a learn mode

• US 7,480,552 B2
• Filed: 10/10/2006
• Issued: 01/20/2009
• Est. Priority Date: 03/30/2001
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Crenshaw, Robert James, Day, Paul Reuben, Bates, Cary Lee, Santosuosso, John Matthew
• Primary Examiner(s): Nguyen; Cuong H
• Application Number:
  US11/548,260
• Publication Number:
  US 20070135996A1
• Time in Patent Office: 833 Days
• Field of Search: 701 51- 52, 701/55, 701/65, 701 57- 59, 701/213, 340/5.1, 342/357.06, 342/357.12, 398/125, 398130- 13, 706/905
• US Class Current: 701/51
• 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 59/66 Road conditions, e.g. slope, slippery
• CPC Class Codes: F16H 61/0213 characterised by the method for generating shift signals

Abstract

A method and system for controlling an automatic transmission is disclosed. The method and system include obtaining positioning data using a global positioning satellite (GPS) and monitoring the automatic transmission to obtain transmission data. The method and system also include learning whether performance of the automatic transmission can be improved utilizing the positioning data and the transmission data. Moreover, the method and system include adjusting a shift threshold for the positioning data for the automatic transmission if it is determined that the performance of the automatic transmission can be improved.

Claims

1. A system for controlling an automatic transmission comprising:

a global positioning satellite (GPS) subsystem for obtaining positioning data using a GPS satellite; and

a transmission subsystem coupled to the transmission and the GPS subsystem for monitoring the automatic transmission to obtain transmission data, for automatically learning whether performance of the automatic transmission can be improved utilizing the positioning data and the transmission data and for automatically adjusting a shift threshold for the automatic transmission for the positioning data if the transmission subsystem determines that the performance of the automatic transmission can be improved;

wherein the automatic transmission subsystem determines automatically that the performance of the automatic transmission can be improved when a predetermined load on the automatic transmission system increases by a particular amount within a particular time,

wherein the automatic transmission subsystem automatically adjusts a shift threshold if the learning determines that the performance of the automatic transmission can be improved and if the positioning data can be obtained using the GPS, and the automatic transmission automatically substation sets the shift threshold to a preset shift threshold if the positioning data cannot be obtained using the GPS.

2. The system of claim 1 wherein the transmission subsystem adjusts the threshold by determining whether a driving condition exists and determining a desired threshold for the automatic transmission based on the driving condition.

3. The system of claim 1 wherein the transmission subsystem further adjusts the shift threshold only if the transmission subsystem determines a particular number of times that the performance of the automatic transmission can be improved.

4. The system of claim 1 wherein the transmission subsystem further adjusts the shill threshold each time the transmission subsystem determines that performance of the automatic transmission can be improved.

5. The system of claim 1 further comprising:

a memory coupled to the transmission subsystem for storing a record of the positioning data and transmission data.

6. The system of claim 5 wherein the transmission subsystem further removes the record if the positioning data is not repeated for a particular time.

7. The system of claim 1 wherein the transmission subsystem monitors a load on the transmission.

8. The system of claim 7 wherein the transmission subsystem determines whether the load indicates that the automatic transmission is to shift up or shift down and wherein the transmission subsystem further adjusts the shift level up if the load indicates that the automatic transmission is to shift up and adjusting the shift Threshold down if the load indicates that the automatic transmission is to shift down.

9. The system of claim 1 wherein the GPS subsystem and the transmission subsystem are integrated into the automatic transmission.

10. The system of claim 1 wherein the GPS subsystem is integrated into a GPS navigation system.