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US 12,576,708 B2Granted
Electric axle with compact electric machine and gearbox arrangement
AssigneeDana Automotive Systems Group, LLC
InventorsEric M. Engerman, Burke Smith
Life of this patent
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Abstract
Systems and methods for an electric axle. The electric axle includes, in one example, a first electric machine directly coupled to a sun gear of a planetary gear set and a second electric machine directly coupled to a carrier of a planetary gear set. The planetary gear set includes a set of planet gears that rotate on the carrier and an output gear that meshes with an input gear in a differential.
Claims7
An electric axle comprising:
- a first electric machine directly coupled to a sun gear of a planetary gear set;
- and
- a second electric machine directly coupled to a carrier of the planetary gear set;
- wherein the planetary gear set includes a set of planet gears that rotate on the carrier and a ring gear that meshes with an input gear in a differential;
- wherein the first electric machine, the second electric machine, and the planetary gear set are coaxially arranged;
- wherein the ring gear includes:
- inner teeth that mesh with gears in the set of planet gears;
- and
- outer teeth that mesh with the input gear of the differential;
- and
- wherein the inner teeth and the outer teeth are radially aligned.
8 more elements
Dependencies are inferred from the claim text.