Mahle International Gmbh

Jens Baumbach

Alfred Elsässer

Martin Helmis

Alfred Elsäβer

René Dingelstadt

Frank Beyer

Wolfgang Schilling

Jan Schmidt

Patric Genieser

Rainer Otto

Eberhard Kallenbach

Georg Kaltwasser

Dietmar Türpe

The present invention relates to an actuation device () for shifting an actuation member () between two end positions, in particular for controlling a gas flow in an internal combustion engine, with an armature () which is mounted in a stator () such that it can move between two end positions in a pivoting manner about a pivot axis () and which is connected or can be connected in a rotationally fixed manner to the actuation member (), with at least one electromagnet (), which is arranged on or in the stator (), for generating electromagnetic attractive forces, with at least one first stator-side bearing face (), against which a first contact face () of the armature () bears when the armature () is in the first end position, and with at least one second stator-side bearing face (), against which a second contact face () of the armature () bears when the armature () is in the second end position. Increased reliability can be achieved for the operation of the actuation device () by a sensor system () for measuring at least one parameter of a magnetic field, which is produced by the at least one electromagnet () during operation of the actuation device (), which parameter is dependent on the armature movement and/or armature position.

Actuation device, valve means and operating method

The present invention relates to an electromagnetic actuator drive () for adjusting an actuator drive among at least three positions, comprising a soft magnetic armature () which is drive-coupled to the final controlling element and has a plurality of armature faces (), a plurality of soft magnetic pole elements () having a plurality of pole faces () on which the armature faces () come to rest in two end positions of the armature () a restore position () which drives the armature () by spring force into a horizontal starting position, and a holding device () with the help of which the armature () can be secured in its end positions by electromagnetic forces. To implement the actuator drive () less expensively, an even number of at least four pole elements () may be provided, a separate electromagnetic coil () being assigned to each pole element () and electric power being applied to the holding device () for securing the armature () in its end positions, the holding device applying electric current to the coils () so that the pole faces () of adjacent pole elements () are oppositely polarized.

Electromagnetic actuator drive

Growing community of inventors

Ilmenau, Germany

Jens Baumbach