Abstract: An automotive auxiliary unit with an electric motor. The automotive auxiliary unit includes a motor stator, a rotatable metallic rotor shaft which defines a rotor fixation section, and a motor rotor which is co-rotatably fixable to the rotatable metallic rotor shaft via pressing at the rotor fixation section. The rotor fixation section has material bulgings at a shaft surface of the rotatable metallic rotor shaft. The material bulgings at the shaft surface of the rotatable metallic rotor shaft are provided via a laser engraving.

Abstract: A check valve arrangement includes a valve housing which radially defines a valve body chamber, a valve inlet opening arranged in the valve housing, a valve seat arranged at a first axial end of the valve body chamber to radially surround the valve inlet opening, a valve travel limiter arranged at a second axial end of the valve body chamber which is remote from the first axial end and the valve seat, and a disc-shaped valve body which is arranged loosely within the valve body chamber. The valve travel limiter includes a support ring which is fixed to the valve housing, a central transversal platform structure which axially protrudes from a side of the support ring which faces the valve seat, and a platform frame which axially connects the central transversal platform structure with the support ring. The platform frame includes at least one radial frame opening.