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US 2018/0323682 A1Published application
Vehicle propulsion system and electric motor for a vehicle propulsion system
AssigneeGM Global Technology Operations LLC
InventorKarl A. Sime
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A vehicle propulsion system, the system comprising:
- a drive member;
- a transmission coupled to the drive member;
- a prime mover coupled to the transmission, wherein the prime mover 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.
2 more elements
A vehicle propulsion system, the system comprising:
- 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.
Dependencies are inferred from the claim text.