Abstract: An electromotive drive module for installation in a housing between an internal combustion engine and a transmission of a motor vehicle power train. The drive module includes an electric machine with a stator and a rotor and first and second clutch devices, by means of which the rotor can be connected when desired to the internal combustion engine and/or to the transmission for the transmission of torque.

Abstract: A torsional vibration damper for arrangement in a clutch disk includes a hub element and a hub-disk arrangement arranged on the hub element. The hub-disk arrangement has a first transmission arrangement and a second transmission arrangement which is rotatable about an axis of rotation relative to the first transmission arrangement. A first damping arrangement acts between the first and the second transmission arrangement. A third transmission arrangement is connected in a rotationally fixed manner to the hub element. A second damping arrangement acts between the third transmission arrangement and one of the first and second transmission arrangements and allows a relative rotation between the third transmission arrangement and the one of the first and second transmission arrangements. Furthermore, a first friction device acts between the third transmission arrangement and at least one of the first and second transmission arrangements.

Abstract: Operating device for motor vehicles, in particular having an output cylinder and/or an input cylinder connected hydraulically to the latter. The operating device includes a housing, a cylinder arranged in the housing and a piston which can be moved back and forth in the cylinder between a rest dead point and an operating dead point. The position of the piston in the cylinder is rendered detectable by signals from at least one switch. As many switches as desired are integrated into an input cylinder, thus rendering it possible to interrogate the position of the piston via a switch unit either for a display or for data reconciliation.

Abstract: A torsional vibration damper includes a hub element, and a hub-disk assembly which is mounted on the hub element by means of a bearing assembly. The bearing assembly is prestressed by a first prestressing arrangement in the bearing seat against the hub element. The hub-disk assembly has a first transmission and a second transmission, which is rotatable about an axis of rotation in relation to the first transmission arrangement, and a first damping arrangement, preferably a damping spring, which acts between the first and the second transmission arrangements. A friction device generates a friction damping force at a relative rotation between the first and second transmissions. The friction device includes at least one friction element which is acted upon by a second prestressing arrangement and is displaceable on at least one transmission arrangement of the first and second transmission arrangements at a relative rotation with generation of the friction damping force.