Apparatus and method for providing automatic shift modes in an automatic transmission

• US 6,231,477 B1
• Filed: 05/21/1999
• Issued: 05/15/2001
• Est. Priority Date: 05/21/1999
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Daimler Chrysler Corporation (Mercedes-Benz Group AG)
• Inventors: Miller, Scott A., Rzepecki, John M. II, Czarnecki, Edward W., Hollingsworth, Rita D.
• Primary Examiner(s): ESTREMSKY, SHERRY LYNN
• Application Number:
  US09/316,605
• Time in Patent Office: 725 Days
• Field of Search: 743/35, 743/36, 701/52, 701/55, 477/155, 477/107
• US Class Current: 477/107
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 10/115 with planetary gears
• CPC Class Codes: B60W 30/18 Propelling the vehicle
• CPC Class Codes: B60W 30/1819 Propulsion control with control means using analogue circuits, relays or mechanical links
• CPC Class Codes: F16H 2059/082 with different modes
• CPC Class Codes: F16H 2059/084 Economy mode
• CPC Class Codes: F16H 2059/085 Power mode
• CPC Class Codes: F16H 2061/0227 Shift map selection, i.e. methods for controlling selection between different shift maps, e.g. to initiate switch to a map for up-hill driving
• CPC Class Codes: F16H 61/0213 characterised by the method for generating shift signals
• CPC Class Codes: F16H 61/14 Control of torque converter lock-up clutches

Abstract

A method and apparatus for providing first and second automatic shift modes for an automatic transmission. Shifting of the automatic transmission is controlled by a transmission controller. The driver selects a control mode by manipulating an input device. The controller controls the operation of the automatic transmission using a first set of operating characteristics and a second set of operating characteristics in response to receiving the first mode signal and the second mode signals, wherein the first and second sets of operating characteristics include engine management characteristics.

Claims

1. An apparatus, comprising:

an automatic transmission;

an input device including a gear shift lever, responsive to manipulation by a driver and adapted to produce one of a first and second mode signals in response thereto;

a plurality of sensors coupled to the automatic transmission and adapted to sense a plurality of parameters related to the automatic transmission and produce a plurality of respective sensor signals; and

,

a controller coupled to the automatic transmission and the input device, and being adapted to receive the sensor signals and the one of the first and second mode signals and automatically shift the automatic transmission in response to the sensor signals and the one of the first and second mode signals, the controller being programmable to provide first and second modes for automatic operation of the automatic transmission in response to receiving the first and second mode signals, respectively, such that torque management is performed in the first mode by reducing the amount of fuel supplied to the engine during a shift operation and torque management is performed in the second mode by reducing the amount of fuel supplied to the engine during a shift operation to a lesser extent than in the first mode.

2. An apparatus, as set forth in claim 1, wherein the input device includes a first mode position and a second mode position and wherein the input device produces the first mode signal in response to being in the first mode position and produces the second mode signal in response to being in the second mode position.

3. An apparatus, as set forth in claim 1 wherein the controller commands changes in the gear ratio of the automatic transmission by utilizing shift schedules.

4. An apparatus, as set forth in claim 1, wherein the controller commands changes in the gear ratio of the automatic transmission while in the first mode by utilizing a first shift schedule and commands changes in the gear ratio of the automatic transmission while in the second mode by utilizing a second shift schedule.

5. An apparatus, as set forth in claim 1, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to a torque converter lockup schedule.

6. An apparatus, as set forth in claim 1, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to first and second torque converter lockup schedules while in the first and second modes, respectively.

7. An apparatus, comprising:

an automatic transmission;

an engine coupled to the automatic transmission, an input device responsive to manipulation by a driver and adapted to produce one of a first and second mode signals in response thereto;

a plurality of sensors coupled to the automatic transmission and adapted to sense a plurality of parameters related to the automatic transmission and produce a plurality of respective sensor signals; and

,

a controller coupled to the automatic transmission and the input device, and being adapted to receive the sensor signals and the one of the first and second mode signals and automatically shift the automatic transmission in response to the sensor signals and the one of the first and second mode signals, the controller being programmable to provide first and second sets of operating characteristics for automatic operation of the automatic transmission in response to receiving the first and second mode signals, respectively, wherein the first and second sets of operating characteristics include torque management and wherein torque management is performed in the first mode by reducing the amount of fuel supplied to the engine during a shift operation and torque management is performed in the second mode by reducing the amount of fuel supplied to the engine during a shift operation to a lesser extent than in the first mode.

8. An apparatus, as set forth in claim 7, wherein the input device includes a first mode position and a second mode position and wherein the input device produces the first mode signal in response to being in the first mode position and produces the second mode signal in response to being in the second mode position.

9. An apparatus, as set forth in claim 8, wherein the input device includes a gear shift lever.

10. An apparatus, as set forth in claim 7, wherein the controller commands changes in the gear ratio of the automatic transmission by utilizing shift schedules.

11. An apparatus, as set forth in claim 7, wherein the controller commands changes in the gear ratio of the automatic transmission while in the first mode by utilizing a first shift schedule and commands changes in the gear ratio of the automatic transmission while in the second mode by utilizing a second shift schedule.

12. An apparatus, as set forth in claim 7, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to a torque converter lockup schedule.

13. An apparatus, as set forth in claim 7, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to first and second torque converter lockup schedules while in the first and second modes, respectively.

14. An apparatus, comprising:

an automatic transmission;

an engine coupled to the automatic transmission and wherein the engine and automatic transmission are in a vehicle;

an input device responsive to manipulation by a driver and adapted to produce one of a first and second mode signals in response thereto;

a plurality of sensors coupled to the automatic transmission and adapted to sense a plurality of parameters related to the automatic transmission and produce a plurality of respective sensor signals; and

,

a controller coupled to the automatic transmission and the input device, and being adapted to receive the sensor signals and the one of the first and second mode signals and automatically shift the automatic transmission in response to the sensor signals and the one of the first and second mode signals. the controller being programmable to provide first and second sets of operating characteristics for automatic operation of the automatic transmission in response to receiving the first and second mode signals, respectively, wherein the first and second sets of operating characteristics includes torque management performed in the first mode of operation by reducing the amount of fuel supplied to the engine while the vehicle is decelerating and torque management performed in the second mode by reducing the amount of fuel supplied to the engine to a lesser extent than in the first mode while the vehicle is decelerating.

15. An apparatus, as set forth in claim 14, wherein the input device includes a first mode position and a second mode position and wherein the input device produces the first mode signal in response to being in the first mode position and produces the second mode signal in response to being in the second mode position.

16. An apparatus, as set forth in claim 15, wherein the input device includes a gear shift lever.

17. An apparatus, as set forth in claim 14, wherein the controller commands changes in the gear ratio of the automatic transmission by utilizing shift schedules.

18. An apparatus, as set forth in claim 14, wherein the controller commands changes in the gear ratio of the automatic transmission while in the first mode by utilizing a first shift schedule and commands changes in the gear ratio of the automatic transmission while in the second mode by utilizing a second shift schedule.

19. An apparatus, as set forth in claim 14, including a torque converter and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to a torque converter lockup schedule.

20. An apparatus, as set forth in claim 14, including a torque converter and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to first and second torque converter lockup schedules while in the first and second modes, respectively.

21. An apparatus, comprising

a throttle;

an automatic transmission;

an input device responsive to manipulation by a driver and adapted to produce one of first and second mode signals in response thereto;

a plurality of sensors coupled to the automatic transmission and adapted to sense a plurality of parameters related to the automatic transmission and produce a plurality of respective sensor signals; and

wherein the plurality of sensors includes a throttle position sensor adapted to produce a responsive throttle position signal; and

a controller coupled to the automatic transmission and the input device, and being adapted to receive the sensor signals and the one of the first and second mode signals and automatically shift the automatic transmission in response to the sensor signals and the one of the first and second mode signals, the controller being programmable to provide first and second sets of operating characteristics for automatic operation of the automatic transmission in response to receiving the first and second mode signals, respectively, wherein the first and second sets of operating characteristics include engine management characteristics;

wherein the controller is adapted to receive the throttle position signal, detect a tip-out condition as a function of the throttle position signal and responsively prevent a shifting of the automatic transmission to a higher gear ratio for a predetermined period of time.

22. An apparatus, as set forth in claim 21, wherein the input device includes a first mode position and a second mode position and wherein the input device produces the first mode signal in response to being in the first mode position and produces the second mode signal in response to being in the second mode position.

23. An apparatus, as set forth in claim 22, wherein the input device includes a gear shift lever.

24. An apparatus, as set forth in claim 21, wherein the controller commands changes in the gear ratio of the automatic transmission by utilizing shift schedules.

25. An apparatus, as set forth in claim 21, wherein the controller commands changes in the gear ratio of the automatic transmission while in the first mode by utilizing a first shift schedule and commands changes in the gear ratio of the automatic transmission while in the second mode by utilizing a second shift schedule.

26. An apparatus, as set forth in claim 21, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to a torque converter lockup schedule.

27. An apparatus, as set forth in claim 21, including a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the controller is adapted to lock the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to first and second torque converter lockup schedules while in the first and second modes, respectively.

28. A method for providing first and second automatic shift modes for an automatic transmission coupled to an engine, including the steps of:

receiving one of a first and second mode signals in response to selection by a driver;

sensing a plurality of parameters related to the automatic transmission and producing a plurality of respective sensor signals; and

,

receiving the sensor signals and the one of the first and second mode signals automatically shifting the automatic transmission as a function of the sensor signals and a first set of operating characteristics in response to receiving the first mode signal and a second set of operating characteristics in response to receiving the second mode signals, wherein the first and second sets of operating characteristics include engine management characteristics, wherein the step of automatically shifting the automatic transmission includes the steps of reducing the amount of fuel supplied to the engine during a shift operation in the first mode and reducing the amount of fuel supplied to the engine during a shift operation to a lesser extent than in the first mode while in the second mode.

29. A method, as set forth in claim 28, wherein the controller commands changes in the gear ratio of the automatic transmission by utilizing shift schedules.

30. A method, as set forth in claim 28, wherein the step of automatically shifting the automatic transmission includes the steps of:

a. determining a desired gear ratio while in the first mode by utilizing a first shift schedule, and

b. determining a desired gear ratio while in the second mode by utilizing a second shift schedule.

31. A method, as set forth in claim 28, wherein the automatic transmission is coupled to a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the step of automatically shifting the automatic transmission includes the step of locking the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to a torque converter lockup schedule.

32. A method, as set forth in claim 28, wherein the automatic transmission is coupled to a torque converter and an engine and wherein the engine, transmission, and the torque converter are in a vehicle, wherein the step of automatically shifting the automatic transmission includes the steps of

a. while in the first mode, locking the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a predetermined threshold according to first torque converter lockup schedule, and

b. while in the second mode, locking the torque converter when the automatic transmission is in a high gear ratio and vehicle speed is above a second predetermined threshold according to a second torque converter lockup schedule.

33. A method for providing first and second automatic shift modes for an automatic transmission coupled to an engine, including the steps of:

receiving one of a first and second mode signals in response to selection by a driver;

sensing a plurality of parameters related to the automatic transmission and producing a plurality of respective sensor signals; and

,

receiving the sensor signals and the one of the first and second mode signals automatically shifting the automatic transmission as a function of the sensor signals and a first set of operating characteristics in response to receiving the first mode signal and a second set of operating characteristics in response to receiving the second mode signals, wherein the first and second sets of operating characteristics include engine management characteristics;

in the first mode, reducing the amount of fuel supplied to the engine while the vehicle is decelerating, and

in the second mode, reducing the amount of fuel supplied to the engine to a lesser extent than in the first mode while the vehicle is decelerating.

34. A method for providing first and second automatic shift modes for an automatic transmission and a throttle coupled to the automatic transmission, including the steps of:

receiving one of a first and second mode signals in response to selection by a driver;

sensing a plurality of parameters related to the automatic transmission and producing a plurality of respective sensor signals and wherein the plurality of sensor signals includes a throttle position signal; and

,

receiving the sensor signals and the one of the first and second mode signals automatically shifting the automatic transmission as a function of the sensor signals and a first set of operating characteristics in response to receiving the first mode signal and a second set of operating characteristics in response to receiving the second mode signals, wherein the first and second sets of operating characteristics include engine management characteristics, and detecting a tip-in condition as a function of the throttle position signal and responsively preventing a shifting of the automatic transmission to a higher gear ratio for a predetermined period of time.