Drive system for a vehicle
AssigneeOshkosh Corporation
InventorsDavid J. Steinberger, Jon J. Morrow, Eric E. Braun, Andrew J. Kotloski
Life of this patent
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Abstract
A drive system for a vehicle includes a first planetary gear set including a first carrier, a second planetary gear set including a second carrier, and a third planetary gear set including a sun gear, a ring gear, a plurality of planetary gears coupling the sun gear to the ring gear, and a third carrier rotationally supporting the plurality of planetary gears. The third planetary gear set is directly coupled to the first carrier and the second carrier. The drive system further includes a first electromagnetic device coupled to the first planetary gear set, a second electromagnetic device coupled to the second planetary gear set, and an output shaft coupled to the first planetary gear set.
Claims15
A drive system for a vehicle, comprising:
- a first planetary gear set including a first carrier;
- a second planetary gear set including a second carrier;
- a third planetary gear set including a sun gear, a ring gear, a plurality of planetary gears coupling the sun gear to the ring gear, and a third carrier rotationally supporting the plurality of planetary gears, wherein the third planetary gear set is directly coupled to the first carrier and the second carrier, and wherein the sun gear of the third planetary gear set is directly coupled to a ring gear of the second planetary gear set;
- a first electromagnetic device coupled to the first planetary gear set;
- a second electromagnetic device coupled to the second planetary gear set;
- and
- an output shaft coupled to the first planetary gear set.
A drive system for a vehicle, comprising:
- a first planetary gear set;
- a second planetary gear set;
- a third planetary gear set directly coupled to the first planetary gear set and the second planetary gear set;
- a first electromagnetic device coupled to the first planetary gear set;
- a second electromagnetic device coupled to the second planetary gear set;
- a connecting shaft coupled to the first planetary gear set and extending through at least one of the second planetary gear set, the third planetary gear set, or the second electromagnetic device;
- and
- an output shaft coupled to the first planetary gear set,
- wherein the third planetary gear set is aligned with the first planetary gear set, the second planetary gear set, and the output shaft.
A vehicle, comprising:
- a multi-mode transmission including:
- a first planetary gear set;
- a second planetary gear set;
- a third planetary gear set coupled to the first planetary gear set and the second planetary gear set;
- a first motor/generator coupled to the first planetary gear set;
- and
- a second motor/generator coupled to the second planetary gear set;
- and
- a drive axle coupled to the first planetary gear set,
- wherein during a first mode of the multi-mode transmission, (a) an actuator is engaged to limit rotation of the third planetary gear set, (b) the third planetary gear set limits rotation of a carrier of the first planetary gear set relative to a ring gear of the second planetary gear set, and (c) the first motor/generator is permitted to rotate independent of the second motor/generator.
Dependencies are inferred from the claim text.