Abstract: An electrical plug-in connection has a plug part with contact pins and a socket part with socket contacts. Coding elements interact in accordance with the lock/key principle in order for the two parts to be fixed in place in a pre-defined relative plug-in position. One or more protrusions, and apertures complementing the protrusions, are provided on the plug or socket parts. On being connected, one protrusion each is incorporated in an aperture, engaging behind the periphery of the associated aperture in the process. The aperture has two adjacent accommodating chambers. A plug-in accommodating-chamber periphery that is directed away from the plug-in direction, is at such a low level that the associated protrusion slides over it in the plug-in direction, and an arresting accommodating-chamber periphery is at such a high level to effectively prevent sliding of the protrusion over the arresting accommodating-chamber periphery.

Abstract: An electric exhaust gas recirculation valve for an internal combustion engine of a motor vehicle includes a motor rotor. A drive motor is configured to be mechanically commutated. The drive motor comprises a plastic carrier panel lying in a transverse plane arranged at a longitudinal end of the drive motor. The plastic carrier panel comprises, on a side facing the motor rotor, at least two commutator brushes and suppression reactance coils assigned to the at least two commutator brushes. Suppression capacitors are arranged on a side averted from the motor rotor. A valve body. A reduction gearing is connected to the drive motor. The reduction gearing is mechanically connected to the valve body.

Abstract: An electrical plug-in connection has a plug part with contact pins and a socket part with socket contacts. Coding elements interact in accordance with the lock/key principle in order for the two parts to be fixed in place in a pre-defined relative plug-in position. One or more protrusions, and apertures complementing the protrusions, are provided on the plug or socket parts. On being connected, one protrusion each is incorporated in an aperture, engaging behind the periphery of the associated aperture in the process. The aperture has two adjacent accommodating chambers. A plug-in accommodating-chamber periphery that is directed away from the plug-in direction, is at such a low level that the associated protrusion slides over it in the plug-in direction, and an arresting accommodating-chamber periphery is at such a high level to effectively prevent sliding of the protrusion over the arresting accommodating-chamber periphery.

Abstract: An electric exhaust gas recirculation valve for an internal combustion engine of a motor vehicle includes a motor rotor. A drive motor is configured to be mechanically commutated. The drive motor comprises a plastic carrier panel lying in a transverse plane arranged at a longitudinal end of the drive motor. The plastic carrier panel comprises, on a side facing the motor rotor, at least two commutator brushes and suppression reactance coils assigned to the at least two commutator brushes. Suppression capacitors are arranged on a side averted from the motor rotor. A valve body. A reduction gearing is connected to the drive motor. The reduction gearing is mechanically connected to the valve body.

Abstract: A wet-running direct-current motor for a fuel pump having a commutator (2) formed from carbon lamellas (5), and carbon brushes (3) having brush running faces (6) which are fluted in the direction of rotation. The fluting is obtained by curved, parallel ribs of triangular cross-sections whose apexes define the brush running face. The curved ribs have radii offset from the curvature of the commutator surface, the offset being achieved by offset of the center of the radius of each rib in a direction counter to the direction of relative rotation of the commutator and brushes. The motor is rendered usable for fuel pumps of diesel engines.

Abstract: A wet-running direct-current motor for a fuel pump having a commutator (2) formed from carbon lamellas (5), and carbon brushes (3) having brush running faces (6) which are fluted in the direction of rotation. The fluting is obtained by curved, parallel ribs of triangular cross-sections whose apexes define the brush running face. The curved ribs have radii offset from the curvature of the commutator surface, the offset being achieved by offset of the center of the radius of each rib in a direction counter to the direction of relative rotation of the commutator and brushes. The motor is rendered usable for fuel pumps of diesel engines.