Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Schaeffler Technologies Ag & Co .kg

Klaus Küpper

Reinhard Berger

Martin Vornehm

Alexander Schweizer

Dietmar Lang

Jürgen Benz

Martin Zimmermann

Thomas Jäger

Klaus Henneberger

Burkhard Pollak

Heiko Dell

Stefan Winkelmann

Ekkehard Reibold

Jürgen Eich

Marc Hauptmann

Ralf Enderlin

Thomas Eggert

Carsten Rustige

Sven-Jostein Kro

Gerd Jäggle

The invention relates to a method and device for securely and comfortably operating a drive train of a motor vehicle, especially for operating a drive train with several clutches.

Method and system for controlling at least one actuator in the drive train of a motor vehicle

The methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out by means of at least one electrically driven actuator, gear positions can be selected by means of a selector device, and the parking brake can be activated by means of the selector device when the vehicle is stationary or moving slowly. The invention also relates to a vehicle provided with an additional gearbox. The ignition key can only be removed, when the gearbox is in the P state and the additional gearbox is not in the N state. The further method and device, whereby the additional gearbox can only be shifted in the N state when the gearbox is not in the P state. The methods and a device for carrying out the same, by automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked and can set off in a reliable and comfortable manner.

Method and device for operating especially an automatic or automated gearbox comprising a parking brake and a runaway locking mechanism

A method of controlling a motor vehicle with an automated clutch is provided and includes the steps of: (a) detecting the vehicle speed, (b) detecting if the brake and/or the gas pedal is actuated, (c) detecting whether or not the engine is running, (d) disengaging the clutch if the engine is found to be running while the vehicle is found to be moving faster than a threshold speed, and if at the same time neither the brake nor the gas pedal is found to be actuated, and (e) subsequently re-engaging the clutch if the brake and/or gas pedal is found to be actuated. Prior to re-engaging the clutch, a transmission input rpm-rate is determined, and an engine rpm-rate is controlled in such a manner that that the respective rpm-rates of the engine and the transmission are brought towards a closer agreement.

Method of controlling a motor vehicle with an automated clutch device

Specific shift positions of an electrically actuated vehicle transmission, such as first to fifth, neutral and reverse gears, are detected by monitoring one or more characteristic electrical variables, e.g., actuator currents, during a shift movement of the transmission and by correlating increased or decreased levels of current with the arrival at or passage through the specific shift positions.

Method of operating a vehicle transmission

In a method and apparatus for diagnosing a malfunction in a clutch actuator of a motor vehicle, the actual position of the clutch actuator is measured by a position sensor. Simultaneously, an estimated position of the clutch actuator is calculated by an emulation unit that emulates the function of the clutch actuator. Malfunctions of the clutch-actuator are diagnosed by comparing the actual, measured position to the estimated position.

Method and apparatus for diagnosing a malfunction of a clutch actuator

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Bühl, Germany

Klaus Küpper