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Magenta Gmbh Systemlieferant Fuer Elektromagnetische Baugruppen

Franz A Bierbrauer

Hans Martin

Wolfgang Kuttler

Rudolf Wichtl

The present invention relates to a fan for an internal combustion engine. The fan has a locking device for a fluid friction clutch in the form of a pivoting hook that may be mounted subsequently at a fixed location using a holding device and may be triggered using an electromagnet. The electromagnet may be accommodated in the circuit of an ignition lock such that when the engine is started, the fan wheel is prevented from rotating unintentionally.

Fan assembly with a fan locking device for an automotive fluid friction fan clutch

A fluid friction clutch has a supply chamber separated from a working chamber by a connecting orifice between the supply chamber and the working chamber. The clutch has a pivotable valve lever with a permanent magnet. A circuit applies a selectively positive or negative current to an electromagnetic coil for generating a selectively alternative magnetic field that interacts with the permanent magnet to control the movement of the valve lever, and, thereby open and close the connecting orifice.

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Schwalbach, Germany

Franz A Bierbrauer