Pierburg Pump Technology Gmbh

Viktor Schroeder

Alessandro Malvasi

Andreas Wulf

Frank Buerger

Martin Schumachers

Michael Haase

Harald Spiertz

An automotive electrical oil pump includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber so as to pump a pressurized oil to an oil recipient, an electric driving motor which drives the pump rotor of the oil displacement pumping unit, an electrical connector plug which electrically connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet which is fluidically connected to a chamber inlet, a pump outlet which is fluidically connected to a chamber outlet, a center front opening, and a ring front opening which is arranged coaxially to the center front opening. The center front opening and the ring front opening define the pump inlet and the pump outlet.

Automotive electrical oil pump

An automotive electric fluidic pump includes a brushless and electronically commutated electric drive motor. The electric drive motor includes a permanent-magnetic motor rotor which rotates around a rotation axis and includes rotor poles, stator-sided electro-magnetic coils, a printed circuit board with openings, at least two stator-sided Hall sensors arranged on a proximal side of the printed circuit board to face the permanent-magnetic motor rotor, and a ferromagnetic back iron member arranged at a distal side of the printed circuit board to provide a direct magnetic coupling of the Hall sensors with each other. The Hall sensors are arranged eccentrically to detect axial magnetic fields of the rotor poles. The ferromagnetic back iron member comprises axial protrusions. An axial protrusion extends into an opening of the printed circuit board. Each axial protrusion faces a Hall sensor.

Automotive electric fluidic pump

An automotive electrical oil pump which includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber to pump oil to an oil recipient, an electric driving motor which drives the pump rotor, an electrical connector plug which connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet fluidically connected to a chamber inlet, a pump outlet fluidically connected to a chamber outlet, a first lateral circular ring opening which define the pump inlet or the pump outlet, and a second lateral circular ring opening or a circular front opening which defines the pump outlet or the pump inlet. The second lateral circular ring opening is provided separate from the first lateral circular ring opening. The pump outlet and the pump inlet are arranged coaxially to each other.

An automotive auxiliary device includes an electric drive motor which is brushless and electronically commutated. The electric drive motor includes a rotatable motor rotor which defines a longitudinal rotor axis, a motor stator, and at least one stator-sided hall-sensor. The motor rotor includes a rotor shaft, a magnet carrier, and at least one permanent magnet which generates at least two rotor poles. The permanent magnet is fixed to the magnet carrier to provide a free inner space between the rotor shaft and the permanent magnet. The permanent magnet includes an axial protruding portion which axially protrudes from at least one side of the magnet carrier. The motor stator comprises at least two stator coils which are arranged radially around the rotatable motor rotor. The hall-sensor is arranged in the free inner space and is provided as a type of radial rotor detection sensor.

Growing community of inventors

Leghorn, Italy

Viktor Schroeder