Importance

Loading Importance Indicators...

Abstract

An automotive electric liquid pump includes a pumping section with a pump rotor, a motor section axially aligned with the pumping section, an electronics cooling circuit, a rotor shaft, and a pump cover housing part. The motor section has a motor control electronics which drives a dry electromagnetic motor stator, and a wet permanently-magnetized motor rotor separated therefrom via a separation wall. The electronics cooling circuit cools the motor control electronics. The rotor shaft supports the pump rotor and the motor rotor, is part of the internal electronics cooling circuit, and is provided as an axial liquid pipe with a motor-sided axial shaft opening and a pump-sided shaft axial opening. The pump cover housing part is mounted to a pump housing and has a throttle groove providing a fluid connection between the axial opening and a static low-pressure pump inlet chamber or with a static high-pressure pump outlet chamber.

Loading the Abstract Image...

First Claim