Schaeffler Technologies Ag & Co .kg

Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Luk Lamellen Und Kupplungsbau Beteiligungsgesellschaft Kg

Juergen Benz

Reinhard Berger

Marian Preisner

Alexander Schweizer

Burkhard Pollak

Dietmar Lang

Klaus Kuepper

A method of adapting control of clutches of a double clutch transmission, including: during a shifting process, controlling torque transmittable by an opening clutch and torque transmittable by a closing clutch according to nominal curves; during a shifting process, determining a difference between a nominal value and an actual value; and adapting a nominal curve of at least one of the clutches for a following shifting process by reducing a difference between the nominal value and the actual value.

Method and device for adapting the control of the clutches of a double clutch transmission

A method for controlling a drivetrain in a motor vehicle which has an internal combustion engine with a crankshaft, an automated gearbox with engagable and disengagable gears and a gearbox input shaft and a gearbox output shaft which drives drive wheels, a friction clutch which connects the crankshaft and the gearbox input shaft in a separable manner and is operated in an automated fashion, and a control unit for controlling the drivetrain. For driving comfort, before the vehicle comes to a stop, a starting gear is engaged in an overrun mode such that, after opening the friction clutch, a synchronization of gearbox input and output shaft rotational speed of the starting gear is initiated at a gearbox input shaft rotational speed which is higher than a target rotational speed of the gearbox input shaft yielded by the transmission ratio of the starting gear between the gearbox input and output shaft.

Method for controlling an automated shift gearbox

A method for determining an error in engine torque, wherein at least before and after a predetermined change in the engine torque the change in engine speed is registered, and this is compared with the engine torque before and after the change in the engine torque.

Determining an engine torque error during an engine torque intervention

A method is described for controlling a clutch which is located between a drive motor and an automated manual transmission of a drive train. In this method, vibrations during load alternations are reduced by controlling the clutch so that a free-wheeling function is implemented during an engine braking mode.

Method for controlling a clutch

Methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out using at least one electrically driven actuator, gear positions can be selected by using a selector device, and the parking brake can be activated by using the selector device when the vehicle is stationary or moving slowly. A vehicle provided with an additional gearbox. An ignition key can only be removed, when the gearbox is in a P state and the additional gearbox is not in the N state. A 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. Further methods and a device in which automated manual gearboxes, especially parallel gearboxes, are controlled in such a way that the vehicle can be safely parked.

Growing community of inventors

Oberkirch, Germany

Juergen Benz