Luk Fahrzeug-hydraulik Gmbh & Co. Kg

Ford Global Technolgoies, LLC

Luk Fahrzeug-hydraulik Gmbh

Luk Fahzeug-hydraulik Gmbh & Co. Kg

Luk Fahrzeug-hydraulik Gmbh & Co.

Thomas Nied-Menninger

Hans-Jurgen Lauth

Randolf Kortge

Van Doan Nguyen

Willi Parsch

Dirk Sickert

Bernd Denfeld

Hans-J&uuml;rgen Lauth

Gerhard Overdiek

Yuejin Gong

Holger Siebertz

Klaus Becker

Axel Fassbender

Axel Faßbender

An adjustable rotary vane pump configured to reduce pressure pulsations during hydraulic fluid discharge includes a housing having two side plates positioned in parallel. Each side plate has multiple grooves formed in its surface. A rotor mounted between the side plates has multiple vanes extending radially outward. A lift ring surrounds the rotor, pivotally connected to the housing to swivel between positions eccentric to the housing. During rotation of the rotors, the vanes divide the annular region between the rotor and the lift ring into multiple cells, which alternately position themselves between a suction zone and a pressure zone of the pump. In a transition region between the suction and pressure zone, when the lift ring is between pre-determined angular positions, the grooves within lift ring and the side plate substantially align to create an overflow channel, which transfers the hydraulic fluid from the suction zone to the pressure zone.

Adjustable vane pump for reducing pressure pulsations during discharge

A pump is proposed, in particular a vane pump, for a liquid or gaseous medium, which can be driven with the help of a motor, in particular an electric motor, and which comprises a rotor ( ) that can be coupled to a drive shaft ( ) of the motor and is arranged in an operating chamber and at least one pressure plate ( ) that closes the operating chamber ( ) in the axial direction and on its lateral face ( ) facing away from the rotor ( ) is connected to a pressure chamber ( ), and also a coupling element ( &prime;) which surrounds part of the drive shaft ( ), cooperates with at least one seal and contributes to sealing off the pressure chamber ( ) with respect to the motor, the drive shaft ( ) extending through a through opening ( ) in the pressure plate ( ). The pump ( ) is characterized in that the coupling element ( &prime;) has a sleeve-like section ( ) which engages in the through opening ( ) in the pressure plate ( ).

Vane pump having a pressure plate and a shaft seal

Vane pump having a pressure plate which is concave when unloaded

The present invention relates to a blocking-vane pump having a casing which contains a rotor and in the wall of which there are arranged grooves which receive in each case one blocking vane and which are pressed by a spring against a circumferential surface of the rotor which has control surfaces separated from each other by separating regions. According to the invention, at least four blocking vanes (30) are provided and, distributed over the circumferential surface (20) of the rotor (16), a number of control surfaces (22) amounting to a multiple of 2, two control surfaces (22) being in each case arranged opposite each other and developed identical and the number of control surfaces (22) being greater than the number of blocking vanes (30).

Blocking-vane pump

A vane pump including a rotor, which is arranged within a cam ring located in the pump housing, and which carries a plurality of radially displaceable vanes which are also displaceable along the inner double-symmetrical contour of the cam ring, with the inner contour defining two diametrically opposite pump chambers and with each chamber being divided in three sections forming, respectively, a suction region, a pressure region, and a separation region between the suction and pressure regions.

Vane pump

A valve assembly for controlling volume flow from a discharge device to an actuator and including a discharge throttle, and a flow control valve for controlling flow through the throttle and having a piston, and end portion of which overlaps a channel for returning excess fluid to a suction side of the discharge device and has an end region forming a seated valve preventing leakage past the end region, when the end region completely overlaps the return channel.

Valve assembly

Growing community of inventors

Usingen, Germany

Thomas Nied-Menninger