Robert Boschgmbh

Robert Bosch Gmbh

Udo Schaich

Rudolf Heinz

Holger Rapp

Dieter Kienzler

Thomas Pauer

Dieter Junger

Andreas Rau

Axel Bormann

Martin Kiontke

Andreas Gruenberger

Joachim Soubari

Stefan Schuerg

Thomas Schwarz

Marco Stieber

Joerg Hahn

Roland Herwig

Fridolin Zeck

Martin Forke

Peter Koblmiller

Falko Malt

Roland Berner

Torsten Leukert

Jens Koerkemeyer

Cetin Yilmazer

Thomas Sommer

Thomas Hohe

Dieter Roehr

Gueray Ikizalp

The invention relates to a shut-off valve () for hydrogen tank systems. comprising The invention also relates to a hydrogen tank system comprising a shut-off valve () according to the invention.

Shut-off valve, and hydrogen tank system comprising a shut-off valve

The invention relates to a solenoid valve (), in particular a shut-off valve for hydrogen tank systems, comprising a reciprocatingly movable magnetic armature () which is or can be coupled to a reciprocatingly movable valve element (), the magnetic armature () being preloaded in the direction of the valve element () by means of a spring (), the solenoid valve further comprising an annular solenoid coil () for acting on the magnetic armature (), the solenoid coil () surrounding the magnetic armature () in portions. According to the invention, the magnetic armature () has a portion () designed as a plunger armature and a portion () designed as a flat armature, the portion () designed as a plunger armature delimiting a pressure chamber () within the solenoid coil (), which pressure chamber is connected pneumatically, preferably via a choke (), to a control chamber () which can be relieved by opening a control valve () which can also be actuated by means of the solenoid coil (). The invention also relates to a hydrogen tank system comprising a solenoid valve () according to the invention.

Solenoid valve and hydrogen tank system comprising solenoid valve

A tank device for storing a gaseous medium includes a valve device and a tank. The valve device includes a valve housing with a pilot valve element. The pilot valve element interacts with a first seal seat and thus forms a pilot valve, wherein the pilot valve element can be moved by a solenoid coil. Furthermore, the valve housing includes a main valve element which interacts with a second seal seat and thus forms a main valve. The pilot valve element additionally has a transverse bore perpendicularly to the longitudinal axis of the tank device, said transverse bore opening into a transverse bore of the main valve element arranged perpendicularly to the longitudinal axis of the tank device. A driver element is at least partly arranged in the transverse bore of the pilot valve element and in the transverse bore of the main valve element.

Tank device for storing a gaseous medium, comprising a valve device

The invention relates to a shut-off valve comprising: a housing which has an inlet opening, an outlet opening and a control opening, wherein the housing defines an inner space extending along a longitudinal axis and has a partition which divides the inner space into an outlet chamber and a control chamber and has a guide hole which extends between the outlet chamber and the control chamber; an electrical coil which is accommodated in the partition and surrounds the guide hole; a servo valve needle which is arranged in the control chamber, is preloaded along the longitudinal axis into a closed position in which it seals the control opening, and can be moved, by means of a magnetic field which can be generated by the coil, into an open position in which it exposes the control opening and abuts the partition, wherein the servo valve needle has a connecting channel which connects the control chamber to the guide hole in the open position of the servo valve needle; and a main valve needle which is movably guided in the guide hole along the longitudinal axis, is preloaded along the longitudinal axis into a closed position in which it seals the outlet opening, and, when the servo valve needle is arranged in its open position, can be moved, by means of the magnetic field which can be generated by the coil, into an open position in which it exposes the outlet opening.

Fuel cell system, gas tank device and shut-off valve for a gas tank device

The invention relates to a tank device () for storing a gaseous medium, in particular hydrogen, comprising a valve device (), and a tank () and having a longitudinal axis (). The valve device () has a valve housing (), which is equipped with a pilot valve element () that can be moved along the longitudinal axis (), said pilot valve element () interacting with a first valve seat () in order to open and close a first outlet opening () and thus forming a pilot valve (). The valve device () can be actuated by means of a solenoid coil (), wherein a main valve element () is arranged in the valve housing (), said main valve element () interacting with a second valve seat () in order to open and close a second outlet opening () and thus forming a main valve (). The tank device () comprises a screw-in housing element (), wherein the valve device () is integrated into a neck region () of the tank () in a fixed manner by means of the screw-in housing element (). The valve device () is arranged in the tank () by means of a tank pressure and is in a closed position by means of a spring () when the solenoid coil () is deactivated.

Tank device for storing a gaseous medium

A tank device for storing a gaseous medium includes a valve device and a tank, the valve device includes a valve housing with a pilot valve element movable by a solenoid coil. The pilot valve element interacts with a first seal seat. A main valve element is arranged in the valve housing and, in order to open and close a through-opening, interacts with a second seal seat formed as a conical shoulder on the valve housing. A throttle channel is formed between the valve housing and an integrally molded shaping of the main valve element, which integrally molded shaping interacts with a second seal seat to open and close the through-opening, and said throttle channel has a conical widening against a direction of the second seal seat, whereby a throttle effect is provided, the valve device being openable in a direction of the tank when the solenoid coil is energized.

Tank device with a valve device

The invention relates to a tank device () for storing a gaseous medium, in particular hydrogen, comprising a valve device () and a tank container (), wherein the valve device () comprises a valve housing (), in which valve housing () a pilot valve element () that can be moved along a longitudinal axis () of the tank container () is disposed. The pilot valve element () cooperates with a first sealing seat () to open and close a passage opening () and thus forms a pilot valve (), wherein the valve device () comprises a solenoid coil () by means of which solenoid coil () the pilot valve element () can be moved along the longitudinal axis () of the tank device (). A main valve element () is furthermore disposed in the valve housing (), which main valve element () cooperates with a second sealing seat () to open and close a passage opening () and thus forms a main valve (), wherein the second sealing seat () is configured as a conical shoulder () on the valve housing (). In addition, a permanent magnet () is disposed at one end () of the pilot valve element (), which permanent magnet () is disposed in the valve device () such that a positive pole element () of the permanent magnet () is disposed in the direction of a housing cover () of the valve device () and a negative pole element () of the permanent magnet () is disposed in the direction of the tank container (), wherein the permanent magnet () is disposed in a positive pole region () of a permanent magnetic field () generated by the solenoid coil () when the solenoid coil () is energized.

A tank device for storing a gaseous medium, in particular hydrogen, includes a valve device and a tank. The valve device includes a valve housing having a longitudinal axis, in which valve housing an interior is formed. An actuation valve element is movable along the longitudinal axis and is arranged in the interior, which actuation valve element interacts with a valve seat in order to open and close an outlet opening and thus forms an actuation valve. The valve device includes a solenoid. The valve seat is formed downstream on the valve housing and at the outlet opening, and the cylindrical outlet opening leads into a cylindrical passage channel, the diameter D of the passage channel is greater than the diameter d of the outlet opening.

The invention relates to a tank device () for storing a gaseous medium, in particular hydrogen, comprising at least one tank reservoir (), wherein said at least one tank reservoir () comprises a tank housing () having a tank neck (). Furthermore, a tank pressure bottom () is arranged in the tank neck (), which tank pressure bottom () separates a tank neck space () and a tank interior () from one another, and wherein said tank neck () has an outer thread () as an abutment on an outer side ().

Tank device for storing a gaseous medium and method for producing a tank device

The invention relates to a device for storing compressed gas, for example hydrogen or natural gas, comprising a storage line () to which at least one compressed gas container () is connected via a valve (). According to the invention, the storage line () has at least one connection port () for the gas-tight connection of the at least one compressed gas container (), and a safety element (), which has a filter function and a shutoff function, is integrated in the connection port (). The invention further relates to a vehicle having a device according to the invention for storing compressed gas.

Device for storing compressed gas, vehicle

An actuator module including a piezoactuator, for example for a piezoinjector for metering fuel in an internal combustion engine, is proposed. The piezoactuator has piezoelements stacked one above another between an actuator head and an actuator foot and is provided with at least one elastomer layer enclosing the piezoelements. The elastomer layer is enveloped by a corrugated bellows or by telescopic tubes, composed of a material that is diffusion-impermeable with respect to a fuel to be metered by the piezoinjector. The corrugated bellows or the telescopic tubes have on their periphery grooves which can absorb expansions of the elastomer layer or of the piezoactuator.

Actuator module with a sheathed piezoelectric actuator

A piezoelectric actuator module having a multilayer structure of piezoelectric elements is proposed as a piezoelectric actuator, wherein a different polarity of an electric voltage is alternately applied to inner electrodes which are arranged between piezoelectric layers of the piezoelectric elements in the direction of the layer structure of the piezoelectric elements, said module having an actuator foot and an actuator head composed of steel and having an elastic insulation medium which surrounds at least the piezoelectric elements in predefined limits. At least one annular groove or recess, into which a material which can be crosslinked with the insulation medium is vulcanized, is provided on the actuator foot and/or on the actuator head, and a flexible, weldable hose or sheath lies encompasses the piezoelectric element, and at least above the grooves or recesses containing the material as an insulation medium the weldable hose is welded to the material in the grooves or recesses.

Piezoelectric actuator module having a sheath, and a method for its production

A piezoelectric actuator with piezoelectric elements, fastened between an actuator head and an actuator foot, and with a plastic sleeve surrounding at least the piezoelectric elements is proposed, which is set in a clamping ring on the actuator head and/or the actuator foot of the piezoelectric actuator. The respective clamping ring may be a metal part or a plastic part, which is equipped with clamping lugs suitable for setting the plastic sleeve and is thrust, pressed, or shrunk onto the respective actuator head and/or actuator foot of the steel piezoelectric actuator.

Piezoelectric actuator with a sheath, for disposition in a piezoelectric injector

A piezoelectric actuator module having a piezoelectric actuator, fastened between an actuator head and an actuator foot, and having a sheath, surrounding the piezoelectric actuator, for electrical passivation, is proposed in which the sheath is an insulation guard layer that is joined by nonpositive and/or positive engagement, by means of a mechanical attachment, to attachment components in the region of the end faces of the piezoelectric actuator or of the actuator head and/or of the actuator foot.

Piezoelectric actuator module with a sheathed piezoelectric actuator

A plug-and-socket connection including a plug and a mating connector, the plug and the mating connector in each case having a housing in which contact elements are provided for producing the electrical plug-and-socket connection and for conducting high currents and voltages, and guide elements being provided in each case on the housing for the exact guidance of the plug. According to the present invention, the guide elements are formed as electrical contact elements. The contact elements used here are utilized, for example, to transmit data streams as currents in the low-voltage range.

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Stuttgart, Germany

Udo Schaich