Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Schaeffler Technologies Ag & Co .kg

Luk Getriebe-systeme Gmbh

Ina Schaeffler Kg

Luk Gebriebe-systeme Gmbh

Thomas Pfund

Michael Reuschel

Wolfgang Reik

Martin Zimmermann

Manfred Kraus

Harald Hochmuth

Dieter Otto

Thomas Dirnberger

Thomas Endler

Martin Vornehm

Jens Schafer

Franz Bitzer

Jurgen Osterlanger

Jens Schäfer

Juergen Gerhart

Christian Lauinger

Martin Fuss

Heiko Dell

André Linnenbrügger

Klaus K&uuml;pper

Thomas Schencke

Jürgen Osterlänger

Anton Rink

Wai-Wai Buchet

Sven-Jostein Kro

Jürgen Gerhart

Christian Späth

Christoph Angele

Wai-Wal Buchet

Klaus Herzog

Martin Fuß

A dynamoelectric permanently excited machine having the possibility of mechanical field weakening. The machine includes a stator (), a rotor () spaced apart from the stator () by an air gap (), permanent magnets () arranged on the rotor () for generating an excitation field in the air gap (), and a centrifugal-force-controlled field-weakening mechanism for weakening the excitation field in the air gap () in accordance with rotational speed. In order to increase the operational safety of systems that are driven by such a machine, the machine also includes a signal input for a fault signal and an actuator for controlling the field-weakening mechanism independently of rotational speed.

Electric machine having mechanical field weakening and including a fail-safe actuator system

A method for determining a wear value of a transmission element between a crankshaft and a camshaft of a reciprocating piston internal combustion engine, in particular a timing chain or toothed belt, is provided. The camshaft is driven by the transmission element via a drive part, for example a camshaft gearwheel. In each case, at least one measurement value for the phase position of the drive part relative to the crankshaft is determined at time intervals during which the crankshaft drives the camshaft, and the wear value is determined from the difference between the measurement values.

Reciprocating piston internal combustion engine and method for determining the wear of a transmission element arranged between a crankshaft and a camshaft

In a method for operating a drive train for a motor vehicle, a torque is produced by means of an internal combustion engine as a function of an available torque set value signal and transmitted to drive wheels by means of a clutch. With the help of an electric motor, a closing force is applied, with which the clutch is held in a closed position against a restoring force. The electric motor is energized in such a way that a high current is used in the case of a high torque and a lower current is used in the case of a lower torque. The thermal load of the electric motor is determined and a load signal corresponding to the thermal load is produced. The load signal is compared with a load limit signal assigned to a permissible load range. If the load signal deviates from the load-limit signal, the torque of the internal combustion engine is limited.

Drive train for a motor vehicle and method for operating such a drive train

The input rotational speed of a belt-driven conical-pulley transmission is determined by measuring a wheel rotational speed and the transmission ratio and by calculating the input rotational speed therefrom. In order to ascertain the slipping of a CVT transmission, the rate of change in the transmission ratio is drawn upon, or an acoustic parameter of the transmission is used. In the fluid control system, a valve is used whose opening cross-section is controlled according to the one differential pressure. In order to oil the conical discs, injection holes of an injection tube are used that passes through a slot provided in a slide rail resting against a strand of a flexible torque transmitting member of a conical disc flexible drive.

Method for determining the rotational speed of a part, ascertaining the slipping of a continuously variable transmission (CVT), and for controlling a CVT, and a conical disc flexible drive transmission

An actuator for a clutch or gear mechanism in a motor vehicle comprises an electric motor and an incremental encoder. The encoder comprises a position measurement signal output at which a position measurement signal can be output which has a number of different signal states, each of which is assigned to a relative position between a primary part and a secondary part of the electric motor. For the commutation of the electric motor, the position measurement signal output is connected to a position measurement signal input of a control device for a motor winding of the electric motor. The control device comprises a device for checking the plausibility of the position measurement signal and is designed in such a manner that on the occurrence of an implausible signal state the power supply to the electric motor is disconnected and/or the power of the electric motor is limited.

Actuator for the actuation of a clutch and/or a gear mechanism

A vehicle roll stabilizer for the chassis of a motor vehicle is provided, with its actuator () being energized with independent energy, as necessary, for counteracting a roll. The actuator () is provided with at least one additional energy accumulator (), with its stored energy additionally counteracting the roll.

Roll stabilizer for the chassis of a motor vehicle

The invention relates to a roll stabilizer for the chassis of a motor vehicle, comprising an actuator (), which is mounted between anti-roll bar halves () and which rotates these about a rotation axis in opposite directions as necessary. The curved path carriers () of the actuator that are assigned to the roll stabilizer halves () are each provided with a curved path () inside of which a coupling element () is guided that can be displaced along these curved paths () via an actuating drive (). The U-shaped or V-shaped curved path () of one curved path carrier () has two curved path branches () that are arranged in a mirror symmetric manner in relation to a longitudinal central plane containing the rotation axis of the actuator ().

Anti-roll bar for the chassis of a motor vehicle

A method and apparatus for regulating the transmission ratio of a continuously variable transmission. A set point value for adjusting the transmission ratio can be changed as a function of the operating parameters of a power train that includes the transmission. The set point value is composed of an initial control value and a regulating value. The initial control value depends on at least two operating parameters of the transmission. The set point value is updated to take into account changes that occur during operation of the transmission.

Method and apparatus for regulating the transmission ratio of a continuously variable transmission

The positions of a gear selecting lever in a combined automatically and manually shiftable transmission which is installed in the power train of a motor vehicle are monitored by a first sensor which transmits signals to a control circuit serving to initiate the operation of an actuator for the gear selecting lever. Certain positions of the lever are monitored and reported to the control circuit by one or more additional sensors which influence the operation of the actuator in the event of failure of the first sensor. One of the additional sensors can monitor a first range of positions of the lever including the position when the transmission is shifted into reverse gear, and another additional sensor can monitor a second range of positions of the lever including the position when the transmission is in neutral gear.

Transmission for use in power trains of motor vehicles

Method of and apparatus for transmitting torque in the power trains of

A lock-up clutch for a flow converter having pump and turbine blades which are hydraulically coupled, in which a ring piston is located between the converter cover and the turbine blades. The ring-piston and converter cover have mating conically shaped friction surfaces, thereby leaving a wedge-shaped space between the converter cover the turbine blades and the friction surface of the ring piston. An annular damper unit located in the wedge-shaped space has a plurality of damper elements which are coupled to the turbine vanes by fingers extending from the turbine vanes.

Coupling for a hydrodynamic flow converter

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Leiberstung, Germany

Thomas Pfund