Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Schaeffler Technologies Ag & Co .kg

Luk Lamellen Und Kupplungsbau Gmbh

Luk Getriebe-systeme Gmbh

Jean-Francois Heller

Urban Panther

Roland Welter

Wolfgang Reik

Stephan Maienschein

Steven P Olsen

Ludwig Winkelmann

Wolfgang Fugel

Dieter Adler

Manfred Kraus

Marc Meisner

Gerhard Meyer

Peter Giese

Thomas Heck

Gunnar Back

Hubert Friedmann

Rudolf H&ouml;nemann

Rainer Venz

Ulrich Helfmeier

Wolfgang Sulger

Uwe Abraham

Paul Granderath

Manfred Jansen

Bruno Müller

Axel Rogner

Ernani Almeida

Volker Lang

Todd Sturgin

David C Avins

Manfred Homm

Walter Parzefall

Thomas Rammhofer

Alain Rusch

Eugen Kremer

Gerhard Prosch

Jan Grabenst&auml;tter

Uwe Weller

Joachim Hoffman

Romain Kaufmann

J&uuml;rgen Osterl&auml;nger

Alexandre Fidline

Jennifer Lau

A torsional vibration damper for a drive train includes an axis of rotation, a multi-flange damper for damping torsional vibrations, a torque limiter unit for limiting a maximum transmissible torque, an outer hub connecting the multi-flange damper to the torque limiter unit for torque transmission, and an inner hub for connection to a transmission input shaft. The multi-flange damper has a plurality of flanges. The torque limiter unit is arranged radially inside the multi-flange damper and includes an inner plate and an outer plate. The outer hub is arranged radially between the multi-flange damper and the torque limiter unit and the inner hub is arranged radially inside the torque limiter unit. The outer hub includes an external toothing engaged with each of the plurality of flanges and an internal toothing engaged with the outer plate.

Torsional vibration damper having an axis of rotation for a drive train

The present invention broadly comprises a vibration damper assembly for a torque transmitting device. The assembly includes a thrust washer secured by first and second components of a vibration damper and a hub secured by the first and second components. The vibration damper, thrust washer, and hub are secured in a fixed position with respect to one another. In some aspects, the torque transmitting device comprises a longitudinal axis and the thrust washer comprises a hub segment having substantially a toroidal shape and at least one retainer segment extending outward, with respect to the axis, from the hub segment. At least a portion of the at least one retainer segment is disposed between the first and second components.

Thrust washer to take torque converter axial loading

An assembly for improving a connection between splined assemblies generally includes first and second assemblies each having at least one spline thereon, an integral fastening assembly for axially fastening the first assembly with respect to the second assembly, and a biasing assembly for asserting a force to oppositely rotationally dispose the first and second assemblies with respect to one another. In an embodiment, the first and second assemblies are annular plates. A method for improving a connection between splined assemblies generally includes asserting a bias upon first and second assemblies such that are oppositely rotationally disposed with respect to one another. In the above method, the first assembly and the second assembly each have at least one spline, an integral fastening assembly for axially securing the first and second assemblies, and a biasing assembly. In an embodiment of the above method, the first and second assemblies are annular plates.

Spline connection

The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston. The piston and/or the lip seal can be installed in the casing to contact one or two metallic or plastic guide sleeves which are connected to or form part of the casing.

Hydraulic operating arrangement for clutches and the like

A hydrokinetic torque converter with a built-in bypass clutch is provided with an arrangement which regulates the cooling of the clutch at a rate dependent upon the slip between the coaxial driving and driven parts of the clutch, and hence upon the quantity of generated friction heat. The cooling unit for the driving and/or driven part of the clutch can employ, for example, one or more pumps; a supply of a substance which changes its aggregate state from liquid to gaseous or from solid to flowable in response to heating, and vice versa in response to cooling; one or more porous washers in the path for the flow of hydraulic fluid between the customary plenum chambers provided in the housing of the torque converter to move a piston of the driven part of the clutch into and from frictional engagement with the housing; and/or a system of recesses, grooves, channels and/or other passages serving to convey fluid between the chambers at a rate which is higher or highest when the clutch operates with maximum slip. Such rate can decrease to zero when the torque converter is idle or the clutch is fully engaged to operate without slip.

Torque transmitting apparatus

The piston of a master cylinder in the power train of a motor vehicle is made, at least in part, of a thermosetting plastic material and cooperates with one or more annular seals to ensure that a source of hydraulic fluid is communicatively connected with the chamber in the housing of the master cylinder when the piston is moved by one or more springs or otherwise in a sense to increase the volume of the chamber. When a pedal or another actuator causes the piston to expel pressurized fluid from the master cylinder into a slave cylinder, the seal or seals cooperates or cooperate with the housing and/or with the piston of the master cylinder to seal the source from the chamber of the master cylinder. The slave cylinder can actuate the friction clutch between the prime mover and the transmission in the power train of the motor vehicle. The piston of the master cylinder is reciprocable by or with a piston rod by way of a ball and socket joint wherein the ball of the piston rod is held against unintentional extraction from the socket of a connector forming part of or being anchored in the piston.

Hydraulic operating systems for clutches and the like

The housing of the slave cylinder in an apparatus for actuating a friction clutch between the engine and the input shaft of the change-speed transmission in the power train of a motor vehicle has a one-piece metallic or plastic member which is non-rotatably affixed to the transmission case. The annular piston of the slave cylinder carries a clutch release bearing and is surrounded by a wall of the housing; this piston slidably surrounds a deep-drawn metallic guide sleeve which is centered in the transmission case and has a flange secured to a collar of the housing by two or more lugs having mutually inclined portions partially bent around and partially recessed into the collar.

Clutch actuating apparatus

A hydraulic system for a motor vehicle has at least one pressure restricting valve with a housing that has two or more connections. At least one conduit cross-section in the housing can be closed by means of a closing body that is movable axially against the action of an energy accumulator. At least a part of the axial travel of the closing body is damped by means of a damping device.

Hydraulic system

The invention relates to hydrodynamic torque converter comprising a pump wheel which is arranged inside of a housing, a turbine wheel, a stator, a torque converter lock-up clutch and a torsional vibration damper. The turbine wheel has a turbine hub which is axially and rigidly mounted on a drive hub of the torque converter in an axial direction to the drive hub by means of at least one axial bearing. The turbine hub is mounted in a radial direction by means of a radial bearing. A connection with circumferential backlash is provided between the turbine hub and the drive hub by means of a disengaging gear. The invention also provides a rotationally fixed connection by means of an engaging gear located between the input component of the torsional vibration damper and the turbine hub, whereby the engaging gear and the disengaging gear are arranged on an essentially same axial position and radially within one another.

Hydrodynamic torque converter

The hydrodynamic torque converter (,) comprises a pump wheel (,) in a casing (,), a turbine wheel (,) and a turbine distributor (,). There is also a bypass coupling (,) including an axially moving piston, a torsional oscillations absorber (,) with input and output parts rotating relative to each other in opposition to force accumulators. Its turbine wheel comprises a hub (,) housed axially on the torque converter output hub (,). A connection with the rotational clearance, the splines (,), is provided between the two hubs. A fixed connection, by splines (,) is between the input part of the absorber and the turbine wheel hub. The two sets of splines are in the same axial position radially one in the other.

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Jean-Francois Heller