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US 2016/0258514 A1Published application
Automotive multistage transmission
AssigneeHyundai Motor Company
InventorsWon Min Cho, Jae Chang Kook, Myeong Hoon Noh, Seong Wook Ji, Kang Soo Seo, Seong Wook Hwang
Life of this patent
Estimating the term…
Abstract
An automotive multistage transmission may include an input shaft and an output shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set each including three rotary members and transmitting torque between the input shaft and the output shaft, and at least six shifting members connected to the rotary members of the planetary gear sets.
Claims7
An automotive multistage transmission comprising:
- an input shaft and an output shaft;
- a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set each including three rotary members and transmitting torque between the input shaft and the output shaft;
- and
- at least six shifting members connected to the rotary members of the planetary gear sets,
- wherein in the first planetary gear set, a first rotary member is continuously connected to the input shaft and is selectively connected to both a second rotary member of the first planetary gear set and a third rotary member of the fourth planetary gear set, a second rotary member is fixable to at least one of the shifting members, and a third rotary member is continuously connected to a second rotary member of the second planetary gear set,
- in the second planetary gear set, a first rotary member is selectively connected to both a second rotary member and the third rotary member of the fourth planetary gear set, the second rotary member is selectively connected to a third rotary member of the third planetary gear set, and a third rotary member is continuously connected to a second rotary member of the third planetary gear set,
- in the third planetary gear set, a first rotary member is continuously connected to a transmission case, and the third rotary member is continuously connected to a first rotary member of the fourth planetary gear set, and
- in the fourth planetary gear set, the second rotary member is continuously connected to the output shaft.
5 more elements
An automotive multistage transmission comprising:
- a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set each including three rotary members, respectively;
- six shifting members selectively providing friction force;
- and
- eight rotary shafts connected to the rotary members of the planetary gear sets,
- wherein in the eight rotary shafts, a first rotary shaft is an input shaft directly connected to a first rotary member of the first planetary gear set,
- a second rotary shaft is directly connected to a second rotary member of the first planetary gear set,
- a third rotary shaft is directly connected to both a third rotary member of the first planetary gear set and a second rotary member of the second planetary gear set,
- a fourth rotary shaft is directly connected to a first rotary member of the second planetary gear set,
- a fifth rotary shaft is directly connected to both a third rotary member of the second planetary gear set and a second rotary member of the third planetary gear set,
- a sixth rotary shaft is directly connected to both a third rotary member of the third planetary gear set and a first rotary member of the fourth planetary gear set,
- a seventh rotary shaft is directly connected to a third rotary member of the fourth planetary gear set, and
- an eighth rotary shaft is an output shaft directly connected to a second rotary member of the fourth planetary gear set, and
- wherein in the six shifting members, a first clutch is disposed between the first rotary shaft and the second rotary shaft, a second clutch is disposed between the first rotary shaft and the seventh rotary shaft, a third clutch is disposed between the fourth rotary shaft and the eighth rotary shaft, a fourth clutch is disposed between the second rotary shaft and a transmission case, a fifth clutch is disposed between the third rotary shaft and the sixth rotary shaft, and a sixth clutch is disposed between the fourth rotary shaft and the seventh rotary shaft.
10 more elements
Dependencies are inferred from the claim text.