Patent · US Active

Electric fluid pump for a motor vehicle

US11462971B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignee

PIERBURG PUMP TECHNOLOGY GMBH · DE

Inventors

ALESSANDRO MALVASI
Christian Schulz · Duisburg, DE
Frank Buerger · Lehrte, DE
Martin Glogasa · Neuss, DE
Witold Joschko · Kempen, DE

Key dates

Filing date	Oct 25, 2017
Grant date	Oct 4, 2022
Priority date	—
Expiry date	Aug 3, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.