Patent ID: 8274194

Claim:
An auxiliary arrangement of a combustion engine, which is to be coupled with an electrical axial flow machine for performing an actuating movement, comprising a stator and a rotor, wherein the auxiliary arrangement comprises a housing which is formed as a deep-drawn part or casting, the stator comprises a coil arrangement, and the rotor comprises a cup-shaped support for permanent magnet elements (N, S), the coil arrangement of the stator comprises at least one cylindrical winding and is at least partially enclosed by two essentially pot-shaped magnetic flux yokes, wherein each of the pot-shaped magnetic flux yokes comprises side areas with magnetic flux poles whose outsides are oriented towards the permanent magnet elements (N, S) of the rotor, the magnetic flux poles of the stator are arranged at a distance from the permanent magnet elements (N, S) of the rotor so as to form an air gap, whose magnetic orientation towards the air gap alternates, and in certain positions of the rotor relative to the stator are oriented so as to be at least partially aligned with at least some of the magnetic flux poles of the rotor, the cup-shaped support of the rotor is formed as a deep-drawn part from pure iron, and the pot-shaped magnetic flux yokes are formed from pure iron as punched and bent parts or castings, wherein each magnetic flux yoke has an essentially flat bottom area with a central opening in order to arrange each magnetic flux yoke secured against rotation on a stator support which comprises a cylindrical tube formed from pure iron, and each magnetic flux yoke comprises an interruption which starts from the central opening in the bottom area and which ends between two webs in the side area.