Robert Boschgmbh

Tilo Hofmann

Klaus Schudt

Christof Ott

Aytekin Bozkan

An electromagnetic actuating device includes a pole tube that is substantially cylindrical overall, an armature situated radially inside the pole tube, and an electromagnetic coil situated radially outside the pole tube, the pole tube having a first axial end and a second axial end. The pole tube is configured as a sleeve that is stamped and is brought into its shape by reshaping, the sleeve having, close to its first axial end, openings that extend in the circumferential direction.

Electromagnetic actuating device

An electromagnetically actuable proportional hydraulic valve ( ) is described, which is distinguished in particular by a constant, low-wear operating performance. This is attained by means of a closing member ( ) having an approximately conical sealing body ( ) with a curved dome-like face end oriented toward the valve seat ( ). The sealing body ( ) together with the valve seat ( ) forms a conical seat valve. The sealing body of the closing member ( ) is provided with a flow separation edge ( ), which improves the temperature sensitivity of the proportional valve ( ).

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Tamm, Germany

Tilo Hofmann