Pierburg Pump Technology Gmbh

Huf Hülsbeck & Fürst Gmbh Co.kg

Pierburg Gmbh

Witold Joschko

Martin Witte

Peter Van Gastel

Alessandro Malvasi

Frank Buerger

Boris Ziller

Bernd Reifenberg

Bernd Gerdes

Andreas Peschl

Stefan Lange

Christian Schulz

Stephan Riefers

Martin Glogasa

Josef Zimmermann

Predrag Stevanovic

Thomas Joachim Gibat

Klaus-Dieter Kulik

An electric fluid pump for a motor vehicle includes an electric drive motor which is brushless and electronically commutated. The electric drive motor includes a permanent-magnetic motor rotor having a motor shaft and at least two rotor poles, each of the at least two rotor poles having one permanent magnet embedded therein, a plurality of stator-side magnetic coils, at least two sensor magnets each emitting an axial magnetic field and each having polarities, and at least one Hall sensor which is arranged to lie eccentrically in a transverse plane so that the at least one Hall sensor detects the axial magnetic fields of the at least two sensor magnets. The at least two sensor magnets are magnetized diametrically. The at least one Hall sensor is arranged to detect the polarities of each of the at least two sensor magnets during one revolution of the permanent-magnetic motor rotor.

Electric fluid pump for a motor vehicle

An automotive auxiliary unit includes an electronic protection unit. The electronic protection unit includes an inverse-polarity protection unit having a semiconductor switch, and an overcurrent protection unit which detects a voltage drop at the semiconductor switch of the inverse-polarity protection unit so as to determine a present current level.

Automotive auxiliary unit with an electronic protection unit

Growing community of inventors

Kempen, Germany

Witold Joschko