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US 2011/0298318 A1Published application
Gravity Fed Oil Cooling for an Electric Machine
AssigneeRemy Technologies, L.L.C.
InventorMichael D. Bradfield
Life of this patent
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Abstract
Embodiments of the invention provide an electric machine module and a method for cooling an electric machine. The electric machine module includes an electric machine and a housing enclosing the electric machine within a machine cavity. The housing can include at least one end cap positioned axially adjacent to the electric machine and including a shroud protruding into the machine cavity. The shroud can include a step with an angled rotor feed path.
Claims20
An electric machine module comprising:
- an electric machine;
- a housing enclosing the electric machine within a machine cavity and including at least one end cap positioned axially adjacent to the electric machine;
- the at least one end cap including a shroud protruding into the machine cavity;
- and
- the shroud including a step with one of a constant-angled and a variable-angled rotor feed path.
2 more elements
An electric machine module comprising:
- an electric machine including a stator with stator end turns;
- a housing enclosing the electric machine within a machine cavity and including a sleeve member substantially circumscribing the electric machine coupled to at least one end cap positioned axially adjacent to the electric machine;
- and
- the at least one end cap including a shroud protruding into the machine cavity, the shroud, the sleeve member, and the at least one end cap positioned to define a stator cavity substantially surrounding the stator end turns in order to help concentrate a coolant within the stator cavity near the stator end turns.
1 more element
A method for cooling an electric machine comprising:
- providing the electric machine including a rotor and a stator circumscribing the rotor, the stator including stator end turns;
- enclosing the electric machine within a machine cavity of a housing, the housing including a sleeve member and at least one end cap with a shroud protruding into the machine cavity;
- dispersing a coolant through a plurality of coolant apertures of the sleeve member toward the stator end turns;
- concentrating at least a first portion of the coolant near the stator end turns using at least the shroud;
- and
- providing a step in the shroud to redirect at least a second portion of the coolant toward the rotor.
3 more elements
Dependencies are inferred from the claim text.