Multi-mode hybrid powertrain
AssigneeFord Global Technologies, LLC
InventorsXiaowu Zhang, David Gon Oh, David Allen Janson, Mark John Jennings, Gregory Daniel Goleski
Life of this patent
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Abstract
A transmission includes first, second, and third planetary gear sets (PGS). A first electric machine is fixedly coupled to a sun gear of the first PGS. A second electric machine is fixedly coupled to a carrier of the first PGS. A brake is selectively holding a ring gear of the first PGS against rotation. First and second clutches selectively couple the first and second electric machines, respectively, to a portion of the second and third PGS, respectively.
Claims20
A transmission for a hybrid vehicle, comprising:
- an input;
- an output;
- a first electric machine;
- a second electric machine
- a first planetary gear set having a first sun gear fixedly coupled to the first electric machine, a first carrier fixedly coupled to the second electric machine, and a first ring gear fixedly coupled to the input;
- a second planetary gear set having a second carrier, a second ring gear, and a second sun gear fixedly coupled to the first carrier;
- and
- a third planetary gear set having a third sun gear, a third carrier, and a third ring gear fixedly coupled to the output.
A transmission comprising:
- an input;
- an output;
- first and second electric machines (EMs);
- a first planetary gear set having a ring gear fixedly coupled to the input, and a carrier fixedly coupled to the second EM;
- a second planetary gear set selectively coupled to the first EM and a sun gear fixedly coupled to the carrier;
- and
- a third planetary gear set having a ring gear fixedly coupled to the output.
A transmission comprising:
- first, second, and third planetary gear sets (PGS);
- a first electric machine fixedly coupled to a sun gear of the first PGS;
- a second electric machine fixedly coupled to a carrier of the first PGS;
- a brake selectively holding a ring gear of the first PGS against rotation;
- and
- first and second clutches selectively coupling the first and second electric machines, respectively, to a portion of the second and third PGS, respectively.
Dependencies are inferred from the claim text.