Siemens Aktiengesellschaft

Continental Automotive Gmbh

Vitesco Technologies Gmbh

Claus Zumstrull

Carsten Schuh

Andreas Voigt

Hellmut Freudenberg

Andreas Wildgen

Marcus Unruh

Stefan Kohn

Michael Denzler

Horst Gilg

Thomas Richter

Jörg Haubold

Harald Johannes Kastl

Emanuel Sanftleben

Klaus Plecher

Bernd Döllgast

Bernhard Döllgast

Wilhelm Frank

Günter Lewentz

Andreas Lenk

Tim Bohlmann

Christoph Hamann

Maximilian H Kronberger

Christian Reichinger

Wendelin Klügl

Martin Neumaier

Dejan Jovovic

G&uuml;nter Lewentz

Roland Niefanger

Alexandra Lautenschläger

Yavuz Kurt

Matthias Goller

Wolfgang Reisinger

Susan Seifert

Christian HÄGLER

Grit KRÜGER

Alexandra LAUTENSCHLÄGER

A method of forming an electronic structural element having a stack including first and second electrode layers arranged alternatively with material layers is disclosed. A stack is formed with the first electrode layers projecting beyond a first lateral side of the stack and the second electrode layers spaced radially inward from the first lateral side. A first contacting structure that contacts each first electrode layer is applied directly to the first side of the stack, which contacting structure embeds such the projecting first electrode layers in an electrically conductive manner. A second contacting structure is formed by exposing the first and second electrode layers at a second side of the stack, forming, by an additive method, a solvent-free insulating structure that electrically insulates the first electrode layers, and applying an electrically conductive material over the solvent-free insulating structure to form the second contacting structure that contacts each second electrode layer.

Method for producing an electronic structural element as a stack

A piezo component with a contacting component for electrically contacting a piezo stack. The contacting component has an electrically conductive meandering structure for bringing the contacting component into electric contact with inner electrodes of the piezo stack and an electrically conductive contacting device for electrically contacting the contacting component from outside the piezo stack. The meandering structure and the contacting device are arranged at a distance from each other, and a connection element is provided in order to connect the contacting device and the meandering structure in an electrically conductive manner and simultaneously decouple forces between the contacting device and the meandering structure.

Component for electrically contacting a piezo stack, a piezo stack, and method for producing the same

A piezo-stack includes a plurality of lateral surfaces and a first passivation layer applied to a first lateral surface. The first passivation layer terminates flush with opposing lateral surfaces that adjoin the first lateral surface.

Piezo-stack with passivation, and a method for the passivation of a piezo-stack

An actuator unit for a fuel injection valve of a vehicle internal combustion engine. The actuator unit includes an electronic component formed as a stack. The component includes a plurality of electrode layers and a plurality of material layers which are arranged alternately and react to the application of an electric field. The component also has two outer electrodes electrically connected to respective electrode layers on at least one circumferential side of the component. Additionally, the actuator unit has a piezoelectric sensor coupled to the component in a force-fitting manner, in the stroke direction of the component. When the component is in operation, the sensor detects a force generated by the component, as a voltage or charge between two electrodes arranged on opposing end faces, of a sensor element. The electrodes are deposited from an electrically conductive material directly onto at least the end faces of the sensor element.

Modular actuator unit for a fuel injection valve

A method is provided for making electrical contact with an electronic component in the form of a stack formed from a plurality of material layers, which react upon application of an electric field, and a plurality of electrode layers, wherein each material layer is arranged between two of the electrode layers. An insulation structure is generated on at least one stack circumferential region of the stack, which exposes each second electrode layer of the at least one stack circumferential region for electrical contact to be made. Also, a contact-making structure is applied to the at least one stack circumferential region which is provided with the insulation structure. Before the step of generating the contact-making structure, the material layers are partially removed by a material-removing method such that the electrode layers are exposed close to the surface.

Method for making electrical contact with an electronic component in the form of a stack, and electronic component having a contact-making structure

A piezoelectric component with a monolithic stack, has electrode layers and piezoceramic layers arranged alternately one on top of the other, the piezoceramic layers have a piezoceramic, and having at least one porous security layer arranged in the stack for the formation of a crack if mechanical overload of the stack should occur. The piezoelectric component has an infiltration barrier arranged between the security layer and a lateral surface section of the stack for suppressing the penetration of a foreign substance into the security layer. The piezoelectric component can be as a piezoactuator for controlling a valve, particularly a valve of an internal combustion engine.

Piezoelectric component comprising a security layer and an infiltration barrier and a method for the production thereof

A production method for a contact mat for electrical contacting of an actuator uses a contact mat roll including (a) a plurality of terminal posts spaced apart from each other and extending in a first direction and (b) a plurality of electrically-conductive wires extending parallel to each other in a second, perpendicular direction, such that each wire extends across the terminal posts. The method includes unwinding the contact mat roll; connecting the wires to a metallization strip of an actuator; separating the wires at a location between adjacent terminal posts in the mat, such that a contact mat, including a single terminal post and the wires extending from the metallization strip to the terminal post, is connected to the actuator; and winding a free end of the contact mat including the terminal post at least partially around the actuator and securing the terminal post in position.

Production method of contact mat for an actuator

A sealing arrangement of a piezoactuator () for a fuel injection valve of an internal combustion engine, has connecting pins () projecting out of the piezoactuator () and a head arrangement () placed on to the piezoactuator (), which is provided with openings () for the penetration of the connecting pins (), wherein a liquid-tight sealing element () abuts against the outer surfaces of the connecting pins () on one side and also against the head arrangement () on the other. In order to ensure a reliable seal with this arrangement, in particular also over extended periods of time, the sealing element () abuts against the outer surfaces of the connecting pins () located inside the openings (), and sealing element sections () located inside the openings () are radially compressed in the openings.

Sealing arrangement of a piezoactuator for a fuel injection valve of an internal combustion engine

An actuator for actuating a fuel injection valve has a piezoactuator, enclosed in an actuator housing unit (). The housing unit has a cylindrical actuator housing () which is elongate in its axial direction (A) and at least partially encased by an extruded plastic coat. The actuator housing unit (), in its encased area, is provided with a ventilation aperture () in which a ventilation element () produced from a microporous material is disposed.

Actuator for actuating a fuel injection valve

A protective cover for an actuating drive, that can be used as universally as possible, for components () of a contacting and/or sealing arrangement of the actuating drive. The sealing arrangement is embodied in a liquid-tight but gas-permeable manner and ends in a cavity on the outer side, the cavity being covered by a cover () held on the actuating drive by means of a catch connection ().

Actuating drive for actuating a fuel injection valve

A reception bush for a piezoelectric actuator is provided with two connection pins for electrically bonding the piezoelectric actuator, in particular for a piezoelectric actuator controlling the injector of an injection system for an internal combustion engine. The reception bush has a first () and a second () bush elements which are interconnected when the bush is mounted. The first element () is provided with through holes () for the connection pins of the inventive piezoelectric actuator. The second element () is provided with at least one guide () for the connection pins.

Reception bush for a piezoactuator

A head plate assembly () for an actuator, has a cover (), a lead-through (), at least one connecting pin () led through the lead-through (), and a seal () obturating the lead-through of the connecting pin. The head plate assembly () is pre-assembled without the actuator.

Head plate assembly for an actuator and method for producing an actuator

A contact mat () for electrically contacting an actuator, particularly a piezo actuator for an injector of an injection system has several electrically conductive wires () that are placed next to each other and several mechanical transversal connections located between the individual wires (). The transversal connections consist of one respective terminal post (-) of the actuator.

Contact mat for an actuator, and associated production method

A support assembly for a piezoelectric actuator (), in particular for a piezoelectric actuator for driving an injector for the injection system of an internal combustion engine has a holder (-) for spatially securing a piezoelectric stack () and two associated connection pins () for electrically contacting the stack (). The support assembly is configured as a single support, which only holds a single piezoelectric stack () with two associated connection pins ().

Growing community of inventors

Regenstauf, Germany

Claus Zumstrull