Fte Automotive Gmbh

Fahrzeugtechnik Ebern Gmbh

Fag Kugelfischer Georg Schafer

Valeo Powertrain Gmbh

Wilhelm Heubner

Egid Macht

Alexander Reul

Roland Stössel

Norbert Oberlack

Christian Voigt

Sonja Lenke

Karin Fecke

Wilhelm Will

Reinhold Stöhr

Dietmar Fuchs

Christian Sperber

Roland Stoessel

Herbert Sauer

Frank Sauerteig

Karl Peuker

Alexander Lehnert

Patrick Gegner

Holger Böhme

Katrin Ebert

Walter Drescher

Lutz-Gunter Hinrichsen

Benjamin Wuechner

Wolfgang Reeb

Benjamin Wüchner

Roland STÖßEL

Roland STÖSSEL

A pump unit which has at least one high-pressure port and at least one low-pressure port, having a motor and a hydraulic pump which has at least one high-pressure outlet and at least one low-pressure outlet, wherein the high-pressure outlet is connected to the high-pressure port via at least one pressure-regulating valve.

Pump unit for a drive train of a motor vehicle

A pump unit for clutch actuation, having a high-pressure port for clutch actuation, a low-pressure port for a lubricant flow, a single drive motor and a dual pump, which is driven by the drive motor and has a high-pressure outlet, which is connected to the high-pressure port with a high-pressure line, and a low-pressure outlet, which is connected to the low-pressure port with a low-pressure line, wherein a prefilling line which leads from the low-pressure line to the high-pressure line is provided.

Pump unit for clutch actuation

A liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle, includes a drive motor, a pump module which can be operated in two opposing directions of rotation, and at least one inlet and multiple outlets, each of which has at least one corresponding check valve. The pump has a valve plate corresponding to the pump module in which, for each check valve, a valve seat and a receptacle for a valve element interacting with the valve seat are provided.

Liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle

A pump unit provides a hydraulic pressure for actuating an actuator in the drive train of a motor vehicle, in particular a clutch actuator or gearbox actuator. The pump unit includes a pump, a storage container for hydraulic fluid, and at least one solenoid valve. The solenoid valve is arranged within the storage container such that it is surrounded by hydraulic fluid.

Pump unit for providing a hydraulic pressure for actuating an actuator in the drive train of a motor vehicle

A hydraulic gearbox actuator with a hydraulic pump which has a pump body wherein a rotor is arranged, wherein a drive motor is provided with which the rotor can be driven in opposite directions, wherein two working chambers which are separated from each other are formed in the pump body, the working chambers each having two openings, of which at least three openings are connected to a respective pressure supply circuit, the one side of which is connected to a reservoir and the other side of which is connected to one of three pressure outlets of the gearbox actuator.

Hydraulic gearbox actuator and assembly with such a gearbox actuator and a gearbox for a drive train of a motor vehicle

An actuator () for a device for clutch actuation in a motor vehicle has cylinder housing () with a pneumatic pressure connection (Ep) and at least one hydraulic pressure connection (E, E), in which cylinder housing a piston () is operatively connected to a longitudinally moveably control element (G). The piston together with the cylinder housing defines a pneumatic chamber (K) that can be pressurized via the pneumatic pressure connection. At least one hydraulic chamber (K, K) is connected to the hydraulic pressure connection. The chambers are separated from one another by a sealing arrangement (). In a very compact design of the actuator, a pneumatic operative surface (A) axially delimiting the hydraulic chamber are formed on the piston, so that by pressurizing the pneumatic chamber the control element can be longitudinally moved via the piston in an actuating direction (B) against an external return force acting in a return direction (R), and a piston movement can be controlled by a pressure build-up in the at least one hydraulic chamber.

Actuator, in particular slave cylinder, for a device for a clutch actuation in a motor vehicle

A device for actuating a clutch, having an actuator with a pneumatic chamber (K) delimited by a pneumatic active area (A), two hydraulic chambers (K, K) each delimited by a hydraulic active area (A, A), and a control element (G) that is actively connected to the clutch and can be moved and subjected to a force by the active areas. The pneumatic active area is subjected to a pneumatic pressure by a compressed air source (Q) to generate force in an actuating direction (B). The hydraulic chambers can each be hydraulically connected to a storage container (Q) for hydraulic fluid by an electromagnetically actuatable 2/2-way proportional valve (V, V). Furthermore, a control system (CPU) is provided to independently control the pressure application of the pneumatic chamber and valve positions of the 2/2-way proportional valves.

Device for actuating a clutch

An electric parking brake actuator has a transmission mechanism, which is rotationally drivable by an electric motor and converts rotational movement into an axial movement of an actuating rod that carries an actuating element for the parking brake. The actuating rod normally moves by electric motor displacement via the transmission mechanism from an unblocking position to a blocking position and vice versa. A blocking mechanism serves the purpose of holding the actuating rod in the unblocking position of the actuating rod against the force of a spring element. A blocking disc, which is in drive connection with the transmission mechanism, has a stop surface for a locking device in only one rotational direction of the blocking disc. For secondary alternate operation the stop surface is releasable by the locking device so that the actuating rod is biased by the spring element to the blocking position without electric-motorized assistance.

Electric parking brake actuator for actuation of a parking brake in a motor vehicle

A hydraulic operating device for operating actuators in a motor vehicle transmission has at least two actuation cylinders each containing a cylinder housing. An actuation piston is guided therein along a cylinder axis in a longitudinally displaceable manner. Each actuation piston can be hydraulically loaded and is operatively connected to one of the actuators. The actuation cylinders are combined into a unit that can be flange-mounted on one side, via a flange face, to a dividing wall of a transmission housing of the motor vehicle transmission. The cylinder housings are injection molded from plastic integrally with a flange plate that runs transversely to the cylinder axes, the flange face being formed on the flange plate. The cylinder housings protrude beyond the flange plate, at least on the side of the flange face, in the direction of the cylinder axes.

Hydraulic actuating device for actuation of setting elements in a motor vehicle transmission

The invention relates to a hydraulic or pneumatic operating device for operating actuators in a motor vehicle transmission. At least two actuation cylinders are provided, each containing a cylinder housing. An actuation piston is guided therein along a cylinder axis in a longitudinally displaceable manner. Each actuation piston can be hydraulically or pneumatically loaded and is operatively connected to one of the actuators. The actuation cylinders are combined into a unit which can be flange-mounted on or in a transmission housing of the motor vehicle transmission. A sensor for detecting the position of a signal element arranged on each actuation piston is associated with each cylinder housing. An electrical interface, which is signal-connected to the sensors, is integrated in the unit, via which interface the sensors can be mutually contacted.

Hydraulic or pneumatic actuating device for actuation of setting elements in a motor vehicle transmission

A hydraulic actuation device for a motor vehicle friction clutch has a manually actuatable master cylinder, that has a master pressure chamber which, in a rest position, is fluidically connected to a reservoir. The master cylinder is connected to a slave arrangement that is functionally connected to the motor vehicle friction clutch. A pressure line connects the master pressure chamber to the slave arrangement and in which incorporates an electrically actuatable valve arrangement with an electrically actuatable proportional valve and, connected in parallel, a first check valve which blocks in the direction of the master pressure chamber. A motor pump is connected, on the input side, to the reservoir and can be connected, on the output side, to the pressure line between the valve arrangement and the slave pressure chamber through a second check valve that blocks in the direction of the motor pump.

Device for hydraulically actuating a motor vehicle friction clutch

A hydraulic actuating device for a friction clutch and a gear setting element has a power unit for pressure generation by use of an electrically driven pump. Gear setting and clutch actuating sections are hydraulically connected to the power unit. A detenting device with a blocking element is associated with a piston of the clutch setting cylinder, which is operatively connected with the friction clutch and can be hydraulically loaded on opposite sides. The blocking element is resiliently biased into a blocking setting preventing piston movement and is movable by an actuator from the blocking setting into a release setting permitting piston movement. The pump is reversible in order to load the piston on one or the other side for an actuating movement. The control unit coordinates activation of the pump and actuator in order to disengage or engage the friction clutch.

Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle

An actuating device for hydraulically actuating at least one setting element comprising a pump, which has an electric pump drive, with reversible pumping direction, at least one double-acting piston-cylinder arrangement, which is connected therewith and the piston of which is operatively connected with the setting element, and a hydraulic fluid reservoir from which the hydraulic fluid can be pumped to the piston-cylinder arrangement in order to hydraulically load the piston thereof for a setting element movement depending on pumping direction on one (effective surface) or other (effective surface) side. In this connection, the piston-cylinder arrangement is functionally associated with a detent device with a blocking element, which is spring-biased into a blocking position preventing setting element movement and is movable by an electrically activatable actuator from the blocking position into a release position permitting setting element movement.

Hydraulic actuating device for actuation of one or more setting elements in, in particular, a motor vehicle transmission

A hydraulic actuating device for actuation of clutches in a multi-clutch transmission for motor vehicles is disclosed, comprising a multi-circuit pump having an electric pump drive, at least two pressure circuits hydraulically connected with the pump, and a reservoir for hydraulic fluid, from which the fluid can be conveyed by the pump to the pressure circuits. In this regard, each pressure circuit starting from the pump comprises a non-return valve blocking in the direction of the pump, an electromagnetically actuable proportional throttle valve, by way of which the respective pressure circuit can be the subject of defined hydraulic relief in direction towards the reservoir, and at the outlet side a slave cylinder operatively connected with an associated clutch. The pump drive and the proportional throttle valves are electrically connected with a control unit, which co-ordinates the electrical activation of the pump drive and the proportional throttle valves.

Hydraulic actuating device for actuation of clutches in, in particular, a multi-clutch transmission for motor vehicles

The invention relates to a method for regulating the brake power on the wheels (VR, HR) of a single-track vehicle, using a brake system comprising a wheel brake circuit (RBK) having a pressure modulator (RGC) for regulating the brake pressure pon a front wheel brake (); a wheel brake circuit (RBK) having a pressure modulator (RGV) for regulating the brake pressure pon a rear wheel brake ('); at least one control circuit (STK, STK) for controlling both pressure modulators (RGV, RGV); and a control unit (). According to the invention, the brake pressure pin the brake circuit (RBK) for the rear wheel (HR) is determined according to the brake pressure pdetected in the brake circuit (RBK) for the front wheel (VR)&#x2014;taking an ideal brake power distribution characteristic stored in the control unit () as a basis&#x2014;and is regulated for the rear wheel (HR) by means of the pressure modulator (RGV) in the wheel brake circuit (RBK). As a result, a method is provided which enables the best possible use of the grip between the tyres and the ground in an automated manner during a brake process. The invention also relates to a simply constructed brake system for carrying out the method.

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Itzgrund, Germany

Wilhelm Heubner