Hyundai Motor Company

Kia Motors Corporation

Wook Jin Jang

Seong Wook Hwang

Jae Chang Kook

Myeong Hoon Noh

Seong Wook Ji

Won Min Cho

Kang Soo Seo

Hyun Sik Kwon

Jong Sool Park

Jin Ho Kim

Hyu Tae Shim

Dong Wook Lee

Chul Yung Choi

Sang O Pan

Sun Oh Kim

Hee Sook Kim

Jae Gap Kim

Hee Jin Seol

Gyu Ok Lee

Jong Soo Kim

Dong Hwan Hwang

Kyeong Hun Lee

Ho Rim Yang

Ka Hyon Park

Hyun Kim

Jong Sung Kim

Jin Young Hwang

Hoon Suk Chang

Jae Joon Lee

Jae Yong Kim

Jin Hyung Kong

Sung Whan Min

Joonyung Park

Huwon Kang

A transmission for an electric vehicle may include a first planetary gear set; a first motor configured to input power to a first rotation element of the first planetary gear set; a differential configured to receive power output from a second rotation element of the first planetary gear set; a second motor configured to selectively provide power to a third rotation element of the first planetary gear set; a second planetary gear set including a first rotation element which is directly connected to the differential, and a second rotation element which is configured to selectively receive power from the second motor; and a third planetary gear set including a third rotation element which is directly connected to a third rotation element of the second planetary gear set, a second rotation element which is fixed, and a first rotation element which is directly connected to a selected output shaft of the differential.

Transmission for electric vehicle and control method thereof

A hybrid vehicle transmission includes input and output shafts, first and second motor/generators, a first planetary gear train in which one rotary element of three rotary elements is connected to the input shaft and another thereof is connected to the first motor/generator, a second planetary gear train in which one of three rotary elements is connected to the output shaft and another thereof is connected to the second motor/generator, a first external gear pair consisting of a first gear, connected to a remaining rotary element of the first planetary gear train, and a second gear, connected to a remaining rotary element of the second planetary gear train, and a second external gear pair consisting of a third gear, connected to the input shaft, and a fourth gear directly connected to one rotary element of the second planetary gear train.

Hybrid vehicle transmission

A transmission may include input shaft connected to second rotary element of the third planetary gear set and first clutch; first shaft connecting first rotary element of the second planetary gear set, and second clutch; second shaft connecting first rotary element of the third planetary gear set and first brake; third shaft connecting first rotary element of the first planetary gear set and third clutch; fourth shaft connecting third rotary element of the fourth planetary gear set, the third clutch, and second brake; fifth shaft connecting second rotary element of the first planetary gear set, second rotary element of the second planetary gear set, and third rotary element of the third planetary gear set; and sixth shaft connecting third rotary element of the first planetary gear set, third rotary element of the second planetary gear set, first rotary element of the fourth planetary gear set, and fourth clutch.

Transmission for vehicle

A transmission for a vehicle may include 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 elements, and a plurality of friction members, wherein the friction members are connected to at least one of the rotary elements of the planetary gear sets and control rotation of the rotary elements.

A transmission for a vehicle may include an input shaft, an output shaft, a first planetary gear set, a second planetary gear set, a third, planetary gear set, a fourth planetary gear set, provided to transfer a torque between the input shaft and the output shaft, and friction members, wherein each of the first, second, third, and fourth planetary gear sets includes three rotary elements and three of the friction members are each selectively connected to at least one of the at least three rotary elements of the first, second, third, and fourth planetary gear sets and control rotation of the rotary elements to achieve gear ratios of ten or more steps of forward shifting and one step of reverse shifting in a vehicle.

A transmission for vehicles may include a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set each of the first, second and third planetary gear sets including three rotary elements; and a plurality of friction members, wherein the friction members are connected to at least one of the rotary elements of the planetary gear sets and control rotation of the rotary elements.

Transmission for vehicles

A transmission for a vehicle may include 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 elements, and a plurality of friction members, in which the friction members are connected to at least one or more of the rotary elements of the planetary gear sets and control rotation of the rotary elements.

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.

Automotive multistage transmission

A multi-stage transmission for a vehicle includes an input shaft, an output shaft, first to fourth planetary gear devices each having three rotary elements and transmitting rotary forces between the input and output shafts, and at least six shifting elements connected to the rotary elements of the planetary gear devices. Of the first planetary gear device, the first rotary element is installed to be fixable by any one of the shifting elements and permanently connected to the second rotary element of the third planetary gear device and the third rotary element of the fourth planetary gear device, the second rotary element is variably connected to the third rotary element of the second planetary gear device and the third rotary element of the third planetary gear device, and the third rotary element is variably connected to the first and second rotary elements of the second planetary gear device.

Multi-stage transmission for vehicle

A multi-stage transmission for vehicle may include an input shaft; and an output shafts; first to fourth planetary gear devices transmitting rotary force between the input and output shafts, each of them having three rotary elements; and at least six shifting elements connected to the rotary elements of the planetary gear devices; wherein first rotary element of the first planetary gear device is permanently connected to the input shaft and second rotary element of the third planetary gear device, second rotary element is installed to be fixable by any one of the shifting elements and variably connected to first rotary element of the third planetary gear device and first rotary element of the fourth planetary gear device, and third rotary element is variably connected to first rotary element of the second planetary gear device and permanently connected to second rotary element of the second planetary gear device.

A multi-stage transmission for a vehicle may include an input shaft, an output shaft, first to fourth planetary gear devices disposed between the input shaft and the output shaft to transmit rotary force, each of them having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices, wherein a first rotary element of the first planetary gear device is continuously connected to the input shaft and variably connected to a second rotary element of the first planetary gear device, the second rotary element is installed to be fixable by one shifting element of the at least six shifting elements, and a third rotary element of the first planetary gear device is continuously connected to a second rotary element of the second planetary gear device and variably connected to a third rotary element of the third planetary gear device.

A transmission for a vehicle includes: 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 elements; and a plurality of friction members for controlling rotation of the rotary elements. The transmission improves fuel efficiency by implementing multiple steps of shifting and improves vehicle driving comfort by using operating points in a low RPM range of an engine.

A multistage automatic transmission may include an input shaft, a first composite planetary gear set including first and second planetary gear sets, each of the first and second planetary gear sets including three rotary members, a first brake, a first clutch, a second brake, a second clutch selectively connecting a pair of rotary members of the first composite planetary gear set that are selectively connected to each other, and a second composite planetary gear set arranged coaxially with the input shaft and including a plurality of rotary members, wherein the plurality of rotary members include a rotary member connected to the first composite planetary gear set, a rotary member connected to the input shaft, and a further rotary member connected to an output shaft, at least two rotary members of the plurality of rotary members in the second composite planetary gear set being connected to two friction members.

Multistage automatic transmission for vehicle

A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.

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Yongin-si, South Korea

Wook Jin Jang