Method and apparatus for adapting a clutch torque
First Claim
1. A method for adjusting a relationship, stored in an electronic control unit, between a torque transmittable by a clutch, and a control variable for controlling an actuation unit of the clutch, which clutch is arranged in an automated motor vehicle drive train between a drive motor and a transmission, the drive train including a torque detection device arranged between the clutch and a transmission having a steplessly changeable transmission ratio, said method comprising the steps of:
- producing in the torque detection device an output parameter dependent upon a detected torque and a momentary transmission ratio of the transmission, calculating the torque transmitted by the clutch from the momentary transmission ratio and the value of the output parameter, and adjusting the transmittable torque based upon the control variable and the transmitted torque to produce an adjusted transmittable torque at an operating condition of the clutch at which the transmittable and transmitted torques of the clutch are equalized.
7 Assignments
0 Petitions
Accused Products
Abstract
Method for adapting a relationship stored in an electronic control unit, between a moment transmittable by a clutch, and a control variable for controlling an actuation unit of the clutch, which clutch is arranged in an automated motor vehicle drive train with a torque detection device arranged between the clutch and a transmission with a steplessly changeable transmission ratio for producing an output parameter dependent upon a detected moment and the momentary transmission ration of the transmission, by which method the moment transmitted by the clutch is calculated from the momentary transmission ratio and the value of the output parameter, and in an operating condition of the clutch in which the transmittable and transmitted moment of the clutch are equalized, the transmitted moment is coordinated with the control variable as an updated transmittable moment.
9 Citations
10 Claims
-
1. A method for adjusting a relationship, stored in an electronic control unit, between a torque transmittable by a clutch, and a control variable for controlling an actuation unit of the clutch, which clutch is arranged in an automated motor vehicle drive train between a drive motor and a transmission, the drive train including a torque detection device arranged between the clutch and a transmission having a steplessly changeable transmission ratio, said method comprising the steps of:
- producing in the torque detection device an output parameter dependent upon a detected torque and a momentary transmission ratio of the transmission, calculating the torque transmitted by the clutch from the momentary transmission ratio and the value of the output parameter, and adjusting the transmittable torque based upon the control variable and the transmitted torque to produce an adjusted transmittable torque at an operating condition of the clutch at which the transmittable and transmitted torques of the clutch are equalized.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
10. Apparatus for adjusting the transmittable torque of a clutch in an automated motor vehicle drive train including a drive motor, which is connected through the clutch with a transmission having a steplessly variable transmission ratio, said apparatus comprising:
- a torque detection device for detecting an input torque of the transmission, which torque detection device produces an output parameter which is dependent upon the torque and the transmission ratio of the transmission, and an electronic control unit for controlling a clutch actuation unit with a control value, in which control unit a characteristic curve is stored which gives a target torque transmittable by the clutch as a function of a control variable, which control unit is constructed for adjusting the characteristic curve as a function of the output parameter.
Specification