Robert Boschgmbh

Michael Hermann

Detlef Prahl

Eberhard Schnaibel

Georg Mallebrein

Andreas Blumenstock

Lutz Reuschenbach

Helmut G Schwegler

Ulrich Kuhn

Stephan Uhl

Hartmut Nitzsche

Thorsten Fritz

Andreas Schiel

Michael Nicolaou

Juergen Munz

Josef Foerstera

Bernhard Merschroth

Zsolt Dudas

Siegmar Schoser

Joerg Brandes

Tamas Banky

Tobias Rothfuss

Werner Krauss

Michael Maelzer

In an electronically commutated DC motor having a stator unit () and a rotor unit () which is in the form of an external rotor, and having stationary sintered bearings (), the invention proposes that the rotor unit () is conductively connected to the shaft () in order to connect a conductive shielding, which is formed on the rotor unit (), to a defined electrical potential, and that the sintered bearing () is conductively connected to the potential, so that the shielding of the rotor unit () is capacitively coupled to the potential by means of the electrically insulating, oil-filled bearing gap which is arranged between the shaft () and the sintered bearing (). Therefore, a sliding contact is not required.

Electronically commutated DC motor with shielding

A small commutator motor ( ), in particular a blower motor for motor vehicles, has a rotor shaft ( ) rotatably mounted in at least one rotor bearing ( ) in a motor housing ( ). A commutator ( ) and an armature winding ( ) electrically connected with the commutator ( ) are arranged on the rotor shaft ( ) so as to be fixed with respect to rotation relative to it. Further, brush guides ( ) for receiving brushes ( ) held in sliding contact at the commutator ( ) and an end shield ( ) which fixes the first rotor bearing ( ) in place are provided. The end shield ( ) and the brush guides ( ) are formed as a one-piece structural component part which is a component part of the motor housing ( ) as a first motor housing part ( ).

Commutator-small power motor

The invention is directed to a method and arrangement for checking the operability of a vessel. Pressure is introduced into the vessel utilizing a pressure source having operating variables which vary during operation of the pressure source. These operating variables are detected while the pressure is introduced into the vessel and a conclusion as to a presence of a leak in the vessel is drawn from the operating variables. By utilizing the operating variables, a statement as precise as possible is provided as to the presence of the leak with as little additional equipment as possible.

Method and arrangement for checking the operability of a tank-venting

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Lauf, Germany

Michael Hermann