A vehicle propulsion system includes a rotor shaft defining a cavity within the rotor shaft and a radial hole extending from the cavity to an external surface of the rotor shaft, and a restrictor that reduces a flow of liquid through the radial hole in response to a rotational speed of the hollow rotor shaft exceeding a predetermined threshold rotational speed.
VEHICLE PROPULSION SYSTEM AND ELECTRIC MOTOR FOR A VEHICLE PROPULSION SYSTEM
2018-11-08
Patent
Electronic Resource
English
Vehicle propulsion system and electric motor for a vehicle propulsion system
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