Pierburg Pump Technology Gmbh

Vladimir Popov

Alessandro Malvasi

Ronald Rathke

Jens Teubel

Maik Waberski

Marco Parisi

An electric motor vehicle coolant pump includes a pump rotor which pumps a coolant and a drive motor which drives the pump rotor. The drive motor includes a dry motor stator comprising motor coils, a wet motor rotor, and a gap tube configured to separate the dry motor stator and the wet motor rotor from each other in a fluid-tight manner. The gap tube is formed by an integral sheet metal body which, in a gap region between the wet motor rotor and the dry motor stator consists of an austenitic high-grade steel comprising a material thickness of &#x3c;0.5 mm, a hardness of from 200 to 500, a specific electrical resistance &#x3e;0.10&#x3a9;&#xd7;mm/m, and a relative magnetic permeability&#x3c;20. The integral sheet metal body forms a sheet metal shell sliding bearing shell of a sliding bearing to radially mount the wet motor rotor.

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VS-Villingen, Germany

Vladimir Popov