Multi-speed electric axle
AssigneeDana Automotive Systems Group, LLC
InventorEric M. ENGERMAN
Life of this patent
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Abstract
A system and method for a multi-speed electric axle. The multi-speed electric axle includes, in one example, an electric machine rotationally coupled an input shaft and a planetary gear set that includes a ring gear rotationally coupled to the input shaft or an output shaft and a carrier or the ring gear rotationally coupled to the input shaft or the output shaft. The multi-speed electric axle further includes one or more clutches configured to selectively ground a sun gear or a carrier in the planetary gear set and configured to selectively rotationally couple the sun gear and the carrier.
Claims20
A multi-speed electric axle assembly, comprising:
- an electric machine rotationally coupled an input shaft;
- a planetary gear set including:
- a ring gear rotationally coupled to the input shaft or an output shaft;
- and
- a carrier or the ring gear rotationally coupled to the input shaft or the output shaft;
- one or more clutches configured to:
- selectively ground a sun gear or the carrier in the planetary gear set;
- and
- selectively rotationally couple the sun gear and the carrier.
A multi-speed electric beam axle, comprising:
- a traction motor rotationally coupled an input shaft;
- a meshed planet compound planetary gear set or a simple planetary gear set including:
- a ring gear, a carrier, and a sun gear;
- one or more clutches configured to:
- selectively ground the sun gear or the carrier in the planetary gear set;
- and
- selectively rotationally couple the sun gear and the carrier.
Dependencies are inferred from the claim text.