Schaeffler Technologies Ag & Co .kg

Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Markus Baehr

Marco Grethel

Dominik Herkommer

Juergen Gerhart

Juergen Eich

Loyal George MacMillian

Andre Schauer

Reinhard Berger

Martin Zimmermann

Alexander Schweizer

Reinhard Stehr

Klaus Henneberger

Carsten Mayer

Matthias Panzer

Michael Schuhen

Matthias Ehrlich

Frank Stengel

Martin Fuss

Christian Rieger

Jens Martin

Heiko Dell

Ekkehard Reibold

Joachim Hirt

Jürgen Eich

Felix Dreher

Klaus Küpper

Thomas Weber

Alexander Renfer

Gerd Jaeggle

Thomas Eggert

Hyung Wook Choi

Sven-Jostein Kro

A clutch unit for a powertrain of a motor vehicle is disclosed, comprising a torque input component acting as a drive element, a torque output component acting as an output element, being connectable so as to transmit a torque to the torque input component via a clutch that can be shifted using friction elements, and with a torsional vibration damper having two masses damped relative to one another to reduce rotational irregularities, which is arranged between the torque input component and the torque output component, at least one of the two masses of the torsional vibration damper being simultaneously designed as a support for a friction partner. The disclosure further relates to a hybrid module comprising a first drive machine, the output shaft of which can be connected to an output shaft of a second drive machine or a transmission input shaft via such a clutch unit.

Clutch unit with torsional vibration damper as clutch support, and hybrid module comprising clutch unit

A clutch unit for a powertrain of a motor vehicle is disclosed, comprising a torque input component acting as a drive element and a torque output component acting as an output element, which can be connected to transmit a torque to the torque input component through a clutch which can be switched through friction elements, the clutch having two partial clutches by which the torque input component and the torque output component can be connected so as to transmit a torque, in which one of the two partial clutches is configured as a positive-fit clutch and the other of the two partial clutches is configured as a friction clutch. In addition, the disclosure relates to a hybrid module with a first drive machine the output shaft of which can be connected through such a clutch unit to an output shaft of a second drive machine or a transmission input shaft.

Clutch unit with torsional vibration damper as a clutch support, and hybrid module comprising clutch unit

A control unit arrangement for controlling a fluid arrangement includes at least one transmission actuator element, at least one valve and at least one pump, for clutch and transmission activation. The control unit arrangement also includes a plurality of control units. At least one control unit of the plurality of control units is configured to actuate the at least one transmission actuator element and at least one control unit of the plurality of control units is configured to actuate the at least one pump. One of the control units from the plurality of control units is configured to actuate the at least one valve, or at least two of the control units from the plurality of control units are connected via an OR logic for a common actuation of the at least one valve.

Control unit arrangement for controlling a fluid arrangement

A drive train for a motor vehicle includes an internal combustion engine, a starting device, and a vibration isolation device. The internal combustion engine has a main order of vibration and an excitation frequency predetermined by a predetermined operating principle and a predetermined number of cylinders. The starting device is for starting the internal combustion engine and has an electric machine with a torque characteristic over a speed (n). The vibration isolation device is designed for the main order of vibration of the internal combustion engine. The vibration isolation device has a resonance characteristic below an idling speed (nL) of the internal combustion engine in a resonance range occurring in a first speed range (&#x394;n). The resonance range is shifted into a second, lower speed range (&#x394;n) when the electric machine is coupled. The electric machine is arranged to supply a torque effective beyond the second, lower speed range (&#x394;n).

Drive train

A fluid arrangement for fluid actuation of at least one clutch and at least one transmission component and including a fluid energy source. The fluid energy source is a fluid pump including a first transport direction, in which the fluid pump serves on a transmission side to actuate the transmission component, and including a second transport direction opposite to the first transport direction, in which the fluid pump serves on a clutch side to actuate the clutch.

Fluid arrangement

A fluid assembly in a hydraulic circuit, comprising one or more reservoirs configured to store fluid. The fluid assembly also includes a pump configured to transport the fluid in the hydraulic circuit and actuate a load from a transmission of a motor vehicle, a pressure accumulator configured to collect pressure built up by the pump and actuate the load, and a valve system configured to allow fluid communication of the load with the pump.

A method for adjusting and adapting an operating point of a hydraulic actuator arrangement, in which a volume flow source is connected to a hydraulic cylinder via a pressure line that is filled with a hydraulic fluid. The method includes regulating a volume of the hydraulic fluid by the volume flow source, wherein an operating point of a position of the actuator arrangement corresponds, with respect to a predefined parameter, to a device which is to be actuated by the actuator arrangement. A modified volume of the hydraulic fluid which is necessary to adjust the operating point is derived from a rotational position of a volume flow source motor and/or of the volume flow source.

Method for controlling a hydraulic actuator

The invention relates to a gearbox control system for the fluidic operation of a gearbox which includes a plurality of gears that can be selected and shifted by a gearbox actuator device, and for the fluidic operation of two partial clutches of a dual clutch. The invention is characterized in that the gearbox control system includes two reversing pump actuators which are each assigned one of the partial clutches and which each have two connections to which a fluidic AND valve is connected, the latter having a tank connection as a third connection, wherein the gearbox actuator device is connected to the two reversing pump actuators via a fluidic OR valve.

Gearbox control system

The invention relates to a clutch device for a drivetrain of a motor vehicle, including a pressure plate which is preferably displaceable in the axial direction of the clutch device, wherein the pressure plate, in a coupled position of the clutch device, presses a clutch disk against a counterpressure plate that can be connected to a crankshaft of an internal combustion engine, and including an actuating device which has a displaceable actuating piston. The displacement position of the actuating piston defines a position of the pressure plate and the actuating piston can be driven by a drive unit of the actuating device in order to displace the pressure plate between the coupled position and an uncoupled position. The drive unit has at least one pump, and the at least one pump is accommodated in a pump seat housing and the pump seat housing is connected to the counterpressure plate in such a way as to rotate therewith.

Clutch device with fully integrated hydraulics

A lever system for actuating at least one clutch, comprising at least one pivotable lever that has a certain bending stiffness. The lever has at least one flexurally elastic zone which is designed and/or arranged in such a way that the bending stiffness of the lever varies in accordance with an actuation path of the clutch.

Lever system

The invention relates to a method for controlling a dual clutch and a dual clutch housing two friction clutches which are each actuated independently of one another by means of a hydrostatic actuator. The hydrostatic actuator actuates the clutch as a function of a control signal of a control unit by means of a pressure which is applied to the actuation element and corresponds to a position of an actuation element of the friction clutch along an activation path. In order to sense a change in the position of the actuation element on one friction clutch which is brought about by the pressure on the actuation element of the other friction clutch, it is proposed to determine a correction variation for the purpose of compensating the changed position by means of a variable which represents the pressure of the disruptive hydrostatic actuator.

Method for controlling a dual clutch

A method for controlling an automated clutch, which comprises a hydraulic clutch actuating system having a hydrostatic actuator, the pressure of which is detected. The method includes using the pressure of the hydrostatic actuator to adapt the characteristic curve of the clutch.

Method for controlling an automated clutch

A method for the determination of a motor voltage limit, wherein a clutch actuator of an automated shift transmission remains motionless, including the steps of (a) raising or lowering a withstand voltage by an increment &#x394;U, starting from a current withstand voltage (U), and (b) determining whether the clutch actuator moves under the changed withstand voltage.

Method for the determination of a voltage limit of a clutch actuating motor

In a method for referencing the position of an actuating element of a functional unit, in particular of a clutch in the drivetrain of a vehicle, the attainment of a reference position of the actuating element is assessed for plausibility in that it is checked whether a variable which can be applied to the actuating element varies in a predetermined way in a predetermined spacing of the position of the actuating element from the reference position.

Method and device for referencing the position of an actuating element

A process and device for the currentless referencing of a clutch position in non self-locking clutch actuating systems which are switched without current for a first predetermined, passive period of time or until an actuator standstill occurs, in order to verify a clutch reference position, then the clutch position achieved is determined by first measurement and current is supplied to the clutch actuating system for a predetermined, active period of time, the clutch actuating system being then switched again without current for another predetermined, passive period of time or until an actuator standstill occurs, the clutch position being determined by another measurement; finally the measured clutch position is checked to determine whether it can be verified as a new clutch reference position.

Growing community of inventors

Buehl, Germany

Markus Baehr