Conti Temic Microelectronic Gmbh

Daimler Chrysler Ag

Temic Telefunken Microelectronic Gmbh

Daimlerchrysler Ag Stuttgart

Michael Nagel

Matthias Gramann

Rudolf Wilczek

Roberto Schlenker

Roger Pohlmann

Juergen Martin

Kurt Maute

Wolfgang Thiel

Reinhard Orthmann

Werner Wiedemann

Andreas Schulze

Gunther Breu

Gerhard Hinkel

Steffen Walter

Holger Steffen

Christoph M&uuml;ller

Bernd Seitz

Hans-Peter Schoener

Thomas Rockl

Jürgen Martin

An electronic circuit includes a conductor path on a circuit board, and at least one SMD component, electronic component and/or electromechanical component mounted on the circuit board and connected to the conductor path. A circuit connection is established via a soldered joint and a spring-loaded or stressed springy contact bridge that provides fuse protection. In the event of excessive power dissipation or high temperature, the soldered joint melts or softens and the contact bridge springs open to interrupt the circuit.

Electronic assembly having stressable contact bridge with fuse function

A magnetic displacement sensor, where, in order to achieve an improved measurement behavior, magnets are formed in a direction of an x-axis such that a z-component (B) of the flux density has an essentially linear characteristic curve in a region of travel and/or the magnets are formed in a direction of a y-axis such that the z-component (B) is essentially constant in a region of a transversal offset.

Magnetic displacement sensor

An electronic assembly includes an electronic circuit on a circuit board. The circuit includes a conductor path on the circuit board, and at least one SMD component, electronic component and/or electromechanical component that is mounted on the circuit board and connected to the conductor path. A circuit connection between any two of the conductor paths and/or the components is established via a soldered joint and a spring-loaded contact bridge. In the event of excessive power dissipation, the soldered joint melts or weakens and the contact bridge opens due to the spring force.

Electronic assembly having spring-loaded contact bridge with fuse function

The present invention relates to an actuator for electromagnetic valve control in which the yokes of the electromagnets have a slotted design by means of the yokes consisting of a plurality of solid parts joined to one another.

Actuator for electromagnetic valve control

A method of operating an actuator for electromagnetically controlling a valve in an internal combustion engine involves supplying a heating current to the operating coils of the actuator before starting the internal combustion engine from a cold start condition. Thereby, the operating coils, the components surrounding them, and the lubricant are heated to ensure proper viscosity of the lubricant and thus proper operation of the actuator.

Method for operating actuators for electromagnetically controlling a valve

An actuator for electromagnetically controlling a valve with a device comprising a magnetic field sensor and a magnetic field transmitter for determining the instantaneous position of a retaining plate, the magnetic field sensor and the magnetic field transmitter being surrounded by magnetic screening.

Magnetic screening of an acturator for electromagnetically controlling a valve

On a known electromagnetic actuator for valve control of an internal combustion engine an armature (1) is moved by magnetic force between the pole faces (21, 31) of an opening magnet (2) and a closing magnet (3) to activate an intake/exhaust valve (5). Owing to the work that has to be done when the intake/exhaust valve (5) is opened in order to counteract the high internal gas pressure in the combustion chamber the opening operation takes longer than the closing operation. The disclosed actuator permits faster opening of the intake/exhaust valve (5), in that the magnetic force exerted by the opening magnet (2) is increased for large stroke lengths (d.sub.o) in comparison with the magnetic force exerted by the closing magnet (3) on the armature (1) in conjunction with the same stroke length (d.sub.s) by the provision of a two-section connecting sleeve (7) enclosing the space between the pole faces (21, 31). This connecting sleeve (7) consists of a ferromagnetic sleeve section (70) attached to the opening magnet (2) and a nonferromagnetic sleeve section (71) attached to the closing magnet (3).

Electromagnetic actuator

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Nuremberg, Germany

Michael Nagel