Abstract: A method for monitoring the operation of a drive train of a motor vehicle, the drive train including a drive machine, a clutch and an automated transmission, and the drive train having an emergency program, which enables an emergency operation of the drive train even if important control signals such as engine torque, engine speed, transmission speed are missing, where the emergency operation is initiated as soon as one of the following signals is no longer present: engine torque or a substitute value for the engine torque, torque requested by a driver or a substitute for the torque requested by the driver, engine speed, transmission input speed.

Abstract: A method for controlling an automated friction clutch that is located between a drive motor and a transmission in a motor vehicle that is equipped with fraction control and driving condition recognition for detecting current driving conditions.

Abstract: The invention relates to a method for controlling an automated friction clutch arranged in a drive train of a motor vehicle between an internal combustion engine and a transmission, and is operated in a travel-controlled manner by means of an actuator controlled by a control unit and transmits a maximum clutch torque while the friction clutch is closed, where an engine's torque provided by the internal combustion engine is reduced when the maximum clutch torque is exceeded and is increased when the maximum clutch torque rises. The engine torque is reduced which corresponds to a reduced transmittable clutch torque when the reduced transmittable clutch torque is detected and is increased to the engine torque corresponding to the maximum transmittable clutch torque after a first time interval expires, where the engine torque is limited by means of a second, longer time interval when a reduced transmittable clutch torque is detected.

Abstract: The invention relates to a method for controlling an automated friction clutch arranged in a drive train of a motor vehicle between an internal combustion engine and a transmission, and is operated in a travel-controlled manner by means of an actuator controlled by a control unit and transmits a maximum clutch torque while the friction clutch is closed, where an engine's torque provided by the internal combustion engine is reduced when the maximum clutch torque is exceeded and is increased when the maximum clutch torque rises. The engine torque is reduced which corresponds to a reduced transmittable clutch torque when the reduced transmittable clutch torque is detected and is increased to the engine torque corresponding to the maximum transmittable clutch torque after a first time interval expires, where the engine torque is limited by means of a second, longer time interval when a reduced transmittable clutch torque is detected.

Abstract: A method for monitoring the operation of a drive train of a motor vehicle, the drive train including a drive machine, a clutch and an automated transmission, and the drive train having an emergency program, which enables an emergency operation of the drive train even if important control signals such as engine torque, engine speed, transmission speed are missing, where the emergency operation is initiated as soon as one of the following signals is no longer present: engine torque or a substitute value for the engine torque, torque requested by a driver or a substitute for the torque requested by the driver, engine speed, transmission input speed.

Abstract: A method for controlling an automated friction clutch that is located between a drive motor and a transmission in a motor vehicle that is equipped with fraction control and driving condition recognition for detecting current driving conditions.

Abstract: A method for referencing an incremental travel sensor in an electronically controlled actuation device of a clutch in the drive train of a traveling vehicle, the actuation device containing a memory in which a characteristic curve is stored that indicates the clutch torque as a function of the position of an actuation element, the method comprising the following steps: determining whether the clutch is slipping beyond a given threshold; if so, determining the current clutch torque; and determining the current position of the actuation element based on the current clutch torque and the characteristic curve. Additional methods are specified that facilitate a referencing according to requirements.

Abstract: A method of controlling at least a fifth characteristic operating value of a motor vehicle power train includes the step of performing an emergency adaptation of at least one of the stored clutch-disengagement thresholds during an operating phase of the motor vehicle, if predetermined third conditions are present. The method also includes the step of performing a nonemergency adaptation of at least one of the stored clutch-disengagement thresholds at the end of the operating phase if predetermined fourth conditions are present.

Abstract: A method for altering the coupling torque of a coupling in the drive train of a vehicle with an automatic gearbox and/or automatic coupling in a creep drive mode of a vehicle. According to the invention, the coupling torque is altered according to at least one variable, the parameter of the vehicle describing the creep drive mode thereof.

Abstract: A first characteristic operating value, for example the amount of transmissible clutch torque, in a motor vehicle power train with an engine is controlled by using at least a second characteristic value. The second characteristic value is subject to adaptation, if necessary, during an operating phase of the motor vehicle. The method steps are: starting the engine; and assuring that for a predetermined first time period after starting the engine, the first characteristic operating value is controlled independently of the second characteristic value, wherein the predetermined first time period depends on at least one predetermined third characteristic operating value.

Abstract: A method for altering the coupling torque of a coupling in the drive train of a vehicle with an automatic gearbox and/or automatic coupling in a creep drive mode of a vehicle. According to the invention, the coupling torque is altered according to at least one variable, the parameter of the vehicle describing the creep drive mode thereof.

Abstract: A first characteristic operating value, for example the amount of transmissible clutch torque, in a motor vehicle power train with an engine is controlled by using at least a second characteristic value. The second characteristic value is subject to adaptation, if necessary, during an operating phase of the motor vehicle. The method steps are: starting the engine; and assuring that for a predetermined first time period after starting the engine, the first characteristic operating value is controlled independently of the second characteristic value, wherein the predetermined first time period depends on at least one predetermined third characteristic operating value.

Abstract: A method for controlling an automated clutch of a motor vehicle, wherein the frictional engagement of the clutch is characterized by a physical friction value that changes dependent on an operating state of the clutch, has the steps of: a) modeling the physical friction value as a friction value (RW) in a clutch control unit based on at least one parameter of the power train, wherein the friction value (RW) contains a component representing a dependency of the friction value from a clutch temperature, and b) controlling the frictional engagement of the automated clutch based on the friction value (RW) that was obtained as a result of the modeling in step a).

Abstract: A method for altering the coupling torque of a coupling in the drive train of a vehicle with an automatic gearbox and/or automatic coupling in a creep drive mode of a vehicle. According to the invention, the coupling torque is altered according to at least one variable, the parameter of the vehicle describing the creep drive mode thereof.

Abstract: A method for referencing an incremental travel sensor in an electronically controlled actuation device of a clutch in the drive train of a traveling vehicle, the actuation device containing a memory in which a characteristic curve is stored that indicates the clutch torque as a function of the position of an actuation element, the method comprising the following steps: determining whether the clutch is slipping beyond a given threshold; if so determining the current clutch torque; and, determining the current position of the actuation element based on the current clutch torque and the characteristic curve. Additional methods are specified that facilitate a referencing according to requirements.

Abstract: A method and apparatus for transmitting a torque and for operating a motor vehicle having a drive motor with an automated or automatic transmission in the drive train. A driver-identifying lock recognition system, as well as a transmission control unit that includes a memory function for storing driver-related parameters, especially for improving driving comfort, are provided.

Abstract: The invention relates to a method of compensating for the influence of changes of speed of a rotary component of an adjustable clutch upon the control torque characteristic curve of the clutch in the power train of a motor vehicle wherein the clutch operates between the rotary output element of the engine or another prime mover and a rotary input element of a change-speed transmission. The method includes the steps of monitoring the rotational speed of the clutch and varying the required positions of a mobile adjusting member for the clutch as a function of changes of the monitored rotational speed. The invention also relates to the power train wherein the influence of changes of rotational speed of the aforesaid component upon the characteristic curve can be varied in accordance with the novel method.

Abstract: An automated clutch of a motor vehicle is controlled according to a method with the steps: a) determining a first engine rpm-gradient signal (dnm(M)/dt) based on an engine torque signal (Me) and a target value (Mk) of the clutch torque; b) determining an engine rpm-rate signal (nm(R)) based on the engine rpm-gradient signal from step a); c) comparing an actual engine rpm-rate (nm) to the engine rpm-rate signal (nm(R)) from step b) and determining a correction quantity K based on the comparison; and d) correcting the first engine rpm-gradient signal (dnm(M)/dt) with the correction quantity K.

Abstract: A method for controlling an automated clutch of a motor vehicle, wherein the frictional engagement of the clutch is characterized by a physical friction value that changes dependent on an operating state of the clutch, has the steps of: a) modeling the physical friction value as a friction value (RW) in a clutch control unit based on at least one parameter of the power train, wherein the friction value (RW) contains a component representing a dependency of the friction value from a clutch temperature, and b) controlling the frictional engagement of the automated clutch based on the friction value (RW) that was obtained as a result of the modeling in step a).

Abstract: A method for altering the coupling torque of a coupling in the drive train of a vehicle with an automatic gearbox and/or automatic coupling in a creep drive mode of a vehicle. According to the invention, the coupling torque is altered according to at least one variable, the parameter of the vehicle describing the creep drive mode thereof.