Method for self-configuring automated mechanical transmission and electronic controller

• US 20070105688A1
• Filed: 11/08/2005
• Published: 05/10/2007
• Est. Priority Date: 11/08/2005
• Status: Active Grant

• Current Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Muetzel, Ronald, Sayman, Robert, DeVore, James, Ross, Christopher
• Granted Patent: US 7,367,918 B2
• Time in Patent Office: Days
• US Class Current: 477/34
• CPC Class Codes: F16H 2061/0053 Initializing the parameters of the controller
• CPC Class Codes: F16H 59/70 dependent on the ratio established
• CPC Class Codes: F16H 61/30 Hydraulic or pneumatic motors or related fluid control means therefor
• CPC Class Codes: Y10T 74/19251 Control mechanism

Abstract

A method for self configuring automated mechanical transmissions (AMT) and electronic control units (ECU) ensures compatibility therebetween. The method comprehends undertaking a program or subroutine when the vehicle is first powered up which moves the shift operators into a predetermined position. The shift operators include full stroke sensors. Depending upon differences between the commanded shift pattern and the actual shift pattern of the transmission, the specific type of transmission, for example, a twelve speed or a sixteen speed, can be determined.

Claims

1. A method of ensuring proper automated mechanical transmission and electronic control unit association in a vehicle, comprising the steps of:

providing a plurality of actuators for translating gear selecting components of a transmission into predetermined positions,

providing a plurality of sensors capable of sensing such translation,

providing a controller having a program for selecting at least one predetermined gear position,

executing said program and comparing data from said sensors with data stored in said controller regarding said predetermined gear position selection, and

determining a transmission type by comparison of said stored data with said data from said sensors.

2. The method of ensuring proper transmission and control unit association of claim 1 further including the step of terminating operation when an incompatibility is detected.

3. The method of ensuring proper transmission and control unit association of claim 2 wherein said incompatibility is between said transmission and said control unit.

4. The method of ensuring proper transmission and control unit association of claim 2 wherein said incompatibility relates to gear shift patterns.

5. The method of ensuring proper transmission and control unit association of claim 1 further including the step of selecting software in said controller compatible with said determined transmission type.

6. The method of ensuring proper transmission and control unit association of claim 1 wherein said transmission type is one of a twelve speed transmission and a sixteen speed transmission.

7. The method of ensuring proper transmission and control unit association of claim 1 wherein said at least one predetermined gear position is reverse.

8. A method for determining compatibility between a multiple speed automated mechanical transmission and an electronic control unit comprising the steps of:

providing a multiple speed transmission having a shift operator assembly including a plurality of actuators and associated position sensors having outputs,

providing an electronic control unit having a program comprising the steps of;

commanding one of said actuators to move to a shift position which selects an operating gear in a first type of transmission and selects a non-gear position in a second type of transmission,

determining translation of said moving actuator by reading an output of one of said position sensors associated with said moving actuator,

comparing said translation of said position sensor with a predetermined value associated with selecting said operating gear in said first type of transmission, and

identifying said transmission as a first type if said translation is less than or equal to said predetermined value and identifying said transmission as a second type if said translation is greater than said predetermined value.

9. The method for determining compatibility between a transmission and a control unit of claim 8 wherein said first transmission is a sixteen speed transmission and said second transmission is a twelve speed transmission.

10. The method for determining compatibility between a transmission and a control unit of claim 8 further including the step of terminating operation when an incompatibility is detected.

11. The method for determining compatibility between a transmission and a control unit of claim 10 wherein said incompatibility is between said transmission and said control unit.

12. The method for determining compatibility between a transmission and a control unit of claim 10 wherein said incompatibility relates to gear shift patterns.

13. The method for determining compatibility between a transmission and a control unit of claim 8 further including the step of selecting software in said control unit compatible with said determined transmission type.

14. A method of determining compatible assembly of a transmission with an electronic control unit, comprising the steps of:

providing a transmission with at least one gear selecting operator having an associated motion transducer,

providing a controller for receiving a signal from said transducer and controlling said operator,

commanding said operator to move to a predetermined gear,

reading the motion of said transducer,

determining a first transmission type if said motion is less than or equal to a predetermined value and a second transmission type if said motion is greater than said predetermined value.

15. The method of determining compatible assembly of claim 14 further including the step of terminating operation of said transmission and electronic control unit if one of said first and second types of transmission is incompatible with said electronic control unit.

16. The method of claim 14 wherein said predetermined gear is reverse gear.

17. The method of determining compatible assembly of claim 14 further including the step of configuring said electronic control unit to be compatible with said determined transmission type.

18. The method of determining compatible assembly of claim 14 wherein said transmission type is one of a twelve speed transmission and a sixteen speed transmission.

19. The method of determining compatible assembly of claim 14 further including the step of terminating operation of said transmission and said electronic control unit when an incompatibility is detected.

20. The method of determining compatible assembly of claim 19 wherein said incompatibility relates to a gear shift pattern.