Process and device for controlling and/or regulating an automated clutch

Abstract

In a process which is for controlling and/or regulating an automated clutch, in particular in the drive train of a vehicle, and in which an actuating element, whose position determines the clutch torque transmissible by the clutch, is actuated for setting a predefined clutch torque according to a characteristic curve, the actuating element is actuated according to a characteristic curve which in a first range of the clutch torque specifies the clutch torque as a function of the position of the actuating element and in a second range of the clutch torque specifies the clutch torque as a function of the force applied to the clutch by the actuating element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained with the aid of schematic drawings as examples and with additional details, in which:

FIG. 1 is a schematic representation of a clutch-actuating device; and,

FIGS. 2 to 5 illustrate different characteristic curves to explain the invention.

Claims

1. A process for controlling and/or regulating an automated clutch, in particular in the drive train of a vehicle, and in which an actuating element, whose position determines the clutch torque transmissible by the clutch, is actuated for setting a predefined clutch torque according to a characteristic curve, comprising the step of actuating the actuating element according to a characteristic curve which, in a first range of the clutch torque, specifies the clutch torque as a function of the position of the actuating element and, in a second range of the clutch torque, specifies the clutch torque as a function of the force applied to the clutch by the actuating element.

2. The process recited in claim 1, wherein, in the clutch torque range in which one uses the characteristic curve which specifies the clutch torque as a function of the force, the change of the clutch torque associated with a predefined change of the position of the actuating element is greater than in the other clutch torque range.

3. The process recited in claim 1, wherein a force/path characteristic curve of the actuating element is incorporated, where via said characteristic curve the clutch torque/force characteristic curve and the clutch torque/path characteristic curve can be adapted to one another.

4. A device for controlling and/or regulating an automated clutch, in particular in the drive train of a vehicle, comprising an actuator (14) for moving an actuating element (16) of the clutch (10) and comprising an electronic control device (14) which controls the actuator as a function of operational parameters and according to characteristic curves stored in said electronic control device, characterized by the fact that at least two characteristic curves are stored in the control device (14), where one of the two characteristic curves includes the transmissible clutch torque as a function of the position of the actuating element (16) and the other characteristic curve includes the transmissible clutch torque as a function of the position of the force applied to the clutch by the actuating element and in the control device a change-over device is provided which changes over the control of the actuator from one characteristic curve to the other.

5. The device recited in claim 4, wherein in at least one range of the transmissible clutch torque one of the two characteristic curves is activated and in another range of the transmissible clutch torque the other characteristic curve is activated.

6. The device recited in claim 4, wherein the change-over device activates the characteristic curve which specifies the clutch torque as a function of the force in a range of the transmissible clutch torque in which the change of the clutch torque associated with a predefined change of the position of the actuating element is greater than in the other range of the clutch torque.

7. The device recited in claim 4, wherein the clutch (10) is operatively arranged to be placed into a closed position.

8. The device recited in claim 4, wherein the clutch (10) can advantageously be a clutch of a parallel shift gearbox.