| CPC F16H 57/0476 (2013.01) [F16H 57/037 (2013.01); F16H 57/0424 (2013.01); F16H 57/0436 (2013.01); F16H 57/0443 (2013.01); F16H 57/0471 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); F16H 57/031 (2013.01); F16H 57/0417 (2013.01); F16H 57/0483 (2013.01); F16H 2057/02034 (2013.01)] | 19 Claims |
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1. An electric drive unit comprising:
a housing assembly that defines a first cavity, a second cavity, a sump and an upper reservoir, the sump being coupled in fluid communication with the first cavity, the upper reservoir being spaced apart from the sump and the first cavity;
an electric motor received in the first cavity, the electric motor having a stator, a rotor and a motor output shaft, the stator having a stator core, which is fixedly coupled to the housing assembly, and a plurality of windings, the rotor being received within the stator and being rotatable about a rotational axis, the motor output shaft being coupled to the rotor for rotation therewith about the rotational axis;
a differential assembly in the second cavity, the differential assembly having a differential input member, which is rotatable relative to the housing assembly, and first and second differential output members that are rotatable relative to the differential input member;
a first output shaft that is coupled to the first differential output member for rotation therewith;
a second output shaft that is coupled to the second differential output member for rotation therewith;
a transmission received in the second cavity, the transmission being configured to transmit rotary power between the motor output shaft and the differential input member; and
a fluid pump that is configured to draw a lubricant from the sump and provide a flow of the lubricant;
wherein at least a portion of the flow of the lubricant is discharged into the upper reservoir;
wherein the housing assembly defines a plurality of first lubricant supply galleries and a plurality of second lubricant supply galleries, each of the first and second lubricant supply galleries being a conduit that permits lubricant in the upper reservoir to drain due to gravity to an associated component of the electric drive unit to lubricate and/or cool the associated component;
wherein the first lubricant supply galleries intersect the upper reservoir at an associated location that is less than or equal to a first height dimension, wherein the second lubricant supply galleries intersect the upper reservoir at a corresponding location that is greater than or equal to a second height dimension, the second height dimension being larger than the first height dimension.
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