Method for controlling an automated starter clutch in a drive train of a motor vehicle

Patent metadata

Field	Value
Publication number	US-11473633-B2
Application number	US-201917296810-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Dec 3, 2018
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A method for controlling an automated starter clutch (4) in a drive train of a motor vehicle (1), which drive train has a transmission (3). In at least one first mode, the starter clutch (4) is operated automatically and is transitioned in an event-controlled manner into a second mode, in which the starter clutch (4) can be operated in such a way that upon actuation of the starter clutch (4), at least one jolt-like movement of the motor vehicle (1) is caused. In the second mode, the actuation of the starter clutch (4) is initiated and controlled depending upon operation of an accelerator pedal (13).

First claim

The invention claimed is:

1. A method for controlling an automated starter clutch in a drive-train of a motor vehicle in which the drive-train has a transmission, the method comprising:
in a first mode, automatically operating the starter clutch and changing the starter clutch over in an event-driven manner to a second mode in which the starter clutch is operable in such a way that when the starter clutch is actuated, at least one jolt-like movement of the motor vehicle occurs, and
in the second mode, initiating the actuation of the starter clutch and controlling the actuation of the starter clutch by an actuation of an accelerator pedal.

2. The method according to claim 1 , further comprising, to bring about at least one consecutive engaging and disengaging movement, actuating the starter clutch with a clutch travel path whose variation is determined as a function of a position of the accelerator pedal.

3. The method according to claim 1 , further comprising, to bring about at least one consecutive engaging and disengaging movement, actuating the starter clutch with a clutch gradient whose order of magnitude is determined as a function of the actuation of the accelerator pedal.

4. The method according to claim 1 , further comprising, determining a time interval within which the starter clutch is actuated to bring about at least one consecutive engaging and disengaging movement, as a function of the time during which the accelerator pedal is actuated.

5. The method according to claim 1 , further comprising either activating or deactivating the second mode by manual actuation of an operating element.

6. The method according to claim 5 , further comprising activating the second mode when a presence of at least one vehicle condition datum is determined, which is a prerequisite for carrying out the at least one consecutive engaging and disengaging movement by the actuation of the starter clutch.

7. The method according to claim 6 , further comprising, as the prerequisite, determining a deviation of a shift position of the transmission from a neutral position thereof as the at least one vehicle condition datum.

8. The method according to claim 6 , further comprising, as the prerequisite, determining activation of an auxiliary power take-off for driving a tilting device as the at least one vehicle condition datum.

9. The method according to claim 1 , further comprising, when a change-over occurs from either the first mode to the second mode or from the second mode to the first mode, emitting either a visual or an audio-visual acknowledgment message.

10. The method according to claim 1 , further comprising, in the second mode, after its initiation by the actuation of the accelerator pedal, activating a service brake of the motor vehicle upon a return of the accelerator pedal to a starting position.

11. The method according to claim 1 , wherein during the operation of the starter clutch in the second mode, by returning the accelerator pedal to a starting position, initiating a new actuation of the starter clutch by a new actuation of the accelerator pedal.

12. A computer program product with program code means which are stored on a computer-readable data carrier, for carrying out a method according to claim 1 for the control of the automated starter clutch in the drive-train of the motor vehicle, when the computer program product is stored on a computer for controlling the automated starter clutch.

13. The computer program product with program code means according to claim 12 , wherein the computer is a control unit for controlling the automated starter clutch.

14. A control unit for controlling an automated starter clutch in a drive-train of a motor vehicle, the drive-train having a transmission,
wherein the control unit is designed to operate the starter clutch automatically at least in a first mode and, in an event-controlled manner, to change over to a second mode in order, by actuating the starter clutch, to bring about at least one jolt-like movement of the motor vehicle, the control unit is designed such that, in the second mode, the control unit initiates and controls the actuation of the starter clutch as a function of an actuation of an accelerator pedal.

15. The control unit according to claim 14 , wherein the control unit being configured to initiate and control actuation of the automated starter clutch to bring about at least one consecutive engaging and disengaging movement, the control unit actuating the starter clutch with a clutch travel path as a function of a position of the accelerator pedal.

16. A method of controlling an automated starter clutch in a drive-train of a motor vehicle in which the drive-train has a transmission, the method comprising:
in a first mode, automatically operating the starter clutch and changing over the starter clutch in an event-driven manner to a second mode in which the starter clutch is operable in such a way that when the starter clutch is actuated, at least one jolt-like movement of the motor vehicle occurs, and
in the second mode, initiating and controlling the actuation of the starter clutch by an actuation of an accelerator pedal.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Müller Lutz
• Gröner Wolfgang

Classifications

• F16D2500/7104

  Visual alarms · CPC title

• F16D2500/7041

  Position · CPC title

• F16D2500/31493

  Switches on the dashboard · CPC title

• F16D2500/50239

  Soft clutch engagement · CPC title

• F16D2500/1112

  Heavy vehicle · CPC title