Hyundai Motor Company

Kia Motors Corporation

Kia Motor Corporation

Kia Corporation

Dong Hwan Hwang

Jong Soo Kim

Jong Sool Park

Kyeong Hun Lee

Seong Wook Hwang

Seongwook Ji

Wonmin Cho

Hyun Sik Kwon

Chang Wook Lee

Jin Ho Kim

JongSool Park

Sueng Ho Lee

KyeongHun Lee

Jae Chang Kook

Woo Jin Chang

Chon Ok Kim

Jinseok Kim

Tae Whan Kim

SeokJin Kim

Kangsoo Seo

Ki Tae Kim

Myeong Hoon Noh

Hyu Tae Shim

Ho Rim Yang

Wook Jin Jang

Jin Won Seok

Dongwoo Kim

Seong Wook Ji

Won Min Cho

Juhyeon Park

Ilhan Yoo

Wookjin Jang

Soonki Eo

Tae Seok Seo

Kang Hoon Lee

Jong Hyo Park

Hye Jin Lim

Woo Churl Son

Seongeun Yun

Hyeonjin Kim

Yeong Hoon Kim

Yong Beom Kim

A transmission apparatus may include a planetary gear set including three rotation elements, a dog clutch provided to selectively fix one rotation element of the planetary gear set, input and output shafts connected to two remaining rotation elements, a friction clutch provided to vary frictional force between two arbitrary rotation elements, a linear actuator provided to form linear displacement, a push member provided to receive the linear displacement and to apply pressure to the friction clutch to increase frictional force thereof, a return spring elastically supporting the push member in a direction of releasing the frictional force of the friction clutch, a one-way interlocking structure provided between a sleeve and the push member, and a release spring provided to elastically support the sleeve with respect to the push member in a direction of releasing the dog clutch.

Transmission

A power transmission apparatus of a hybrid electric vehicle using an engine and a motor/generator as power sources includes: a first input shaft selectively connected to a rotor of the motor/generator; a second input shaft disposed external to the first input shaft, and selectively connected to the rotor; an idle shaft disposed in parallel with the first input shaft; an intermediate shaft shifting rotational power transmitted from the first input shaft to the idle shaft; a first output shaft shifting and outputting rotational power transmitted from the second input shaft and the idle shaft; a second output shaft shifting and outputting rotational power transmitted from the first input shaft; and a plurality of gear sets shifting the rotational power input through the first and second input shafts.

Power transmission system for hybrid electric vehicle

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 vehicle transmission is provided that improves fuel efficiency through multiple speed stages and enhances silent drivability of a vehicle using an operating point in a low RPM range of an engine. The vehicle transmission combines three simple planetary gear units with a single compound planetary gear set or combines five simple planetary gear units to shift gears while changing rotational speeds and directions by a selective intermittence operation using rotation elements of the planetary gear units and a plurality of friction elements. Through such a shift operation, it is possible to form at least forward 10-speed or more and reverse 1-speed gear ratios for driving of the vehicle.

Vehicle transmission

A planetary gear train of an automatic transmission may include: an input shaft; an output shaft; first to fifth planetary gear sets each including first to third rotation elements, fourth to sixth rotation elements, seventh to ninth rotation elements, tenth to twelfth rotation elements, thirteenth to fifteenth rotational elements; a first shaft connected with the second rotation element and the input shaft; a second shaft connected with the fourteenth rotation element and the output shaft; a third shaft connected with the sixth, seventh and thirteenth rotation elements; a fourth shaft connected with the tenth and fifteenth rotation elements; a fifth shaft connected with the third and fourth rotation elements; a sixth shaft connected with the fifth, eighth, and eleventh rotation elements; a seventh shaft connected with the ninth rotation element; an eighth shaft connected with the first rotation element; and a ninth shaft connected with the twelfth rotation element.

Planetary gear train of automatic transmission for vehicle

A planetary gear train of an automatic transmission for a vehicle is provided to improve power delivery and fuel efficiency by applying five control elements to four planetary gear sets to achieve multiple speed stages. The planetary gear train may include: first to fourth planetary gear sets respectively having first to third rotational elements, fourth to sixth rotational elements, seventh to ninth rotational elements, tenth to twelfth rotational elements; an input shaft mounted with the first, second, and third planetary gear sets; and an output shaft mounted with the fourth planetary gear set; first to tenth shafts; and two transfer gears. In particular, the eighth shaft is fixedly connected with the tenth rotational element and externally engaged with the first shaft via a first transfer gear, the tenth shaft is fixedly connected with the twelfth rotational element and externally engaged with the sixth shaft via a second transfer gear.

Planetary gear train of automatic transmission for vehicles

A planetary gear train of an automatic transmission may include: an input shaft; an output shaft; first to fifth planetary gear sets each including first to third rotation elements, fourth to sixth rotation elements, seventh to ninth rotation elements, tenth to twelfth rotation elements, thirteenth to fifteenth rotational elements; a first shaft connected with the third rotation element and the input shaft; a second shaft connected with the fourteenth rotation element and the output shaft; a third shaft connected with the fourth and thirteenth rotation elements; a fourth shaft connected with the ninth and fifteenth rotation elements; a fifth shaft connected with the second, fifth and eighth rotation elements; a sixth shaft connected with the seventh and twelfth rotation elements; a seventh shaft connected with the first rotation element; an eighth shaft connected with the sixth and eleventh rotation elements; and a ninth shaft connected with the tenth rotation element.

The present disclosure provides a planetary gear train of an automatic transmission including: input and output shafts, first to fifth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, tenth to twelfth, and thirteenth to fifteenth rotational elements, a first shaft connected with the second rotational element and the input shaft, a second shaft connected with the fourteenth rotational element and the output shaft, a third shaft connected with the ninth and thirteenth rotational elements, a fourth shaft connected with the tenth and fifteenth rotational elements, a fifth shaft connected with the third and seventh rotational elements, a sixth shaft connected with the sixth rotational element, a seventh shaft connected with the fifth, eighth, and eleventh rotational elements, an eighth shaft connected with the first and fourth rotational elements, and a ninth shaft connected with the twelfth rotational element.

The present disclosure provides nine forward speeds and one reverse speed. They are achieved by a planetary gear train of an automatic transmission that includes a main shifting portion having three planetary gear sets arranged on an input shaft, an auxiliary shifting portion having one planetary gear set arranged on an output shaft, nine shafts respectively connected with corresponding rotational elements of the four planetary gear sets, and two transfer gears respectively forming external gear-engagement between the main and auxiliary shifting portions.

A planetary gear train of an automatic transmission includes a main shifting portion having three planetary gear sets arranged on an input shaft, an auxiliary shifting portion having one planetary gear set arranged on an output shaft, eleven shafts respectively connected with corresponding rotational elements of the four planetary gear sets, and two transfer gears respectively forming external gear-engagement between the main and auxiliary shifting portions.

A planetary gear train of an automatic transmission including: input and output shafts, first to fifth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, tenth to twelfth, and thirteenth to fifteenth rotational elements, a first shaft connected with the second rotational element and the input shaft, a second shaft connected with the fourteenth rotational element and the output shaft, a third shaft connected with the sixth and thirteenth rotational elements, a fourth shaft connected with the tenth and fifteenth rotational elements, a fifth shaft connected with the third, fourth, and seventh rotational elements, a sixth shaft connected with the eighth rotational element, a seventh shaft connected with the fifth, ninth, and eleventh rotational elements, an eighth shaft connected with the first rotational element, and a ninth shaft connected with the twelfth rotational element.

A planetary gear train may include first to fifth planetary gear sets having first to third, fourth to sixth, seventh to ninth, and tenth to twelfth elements, a first shaft fixedly connected to the first and eleventh elements and input shaft, a second shaft fixedly connected to the second element and one element of the fifth planetary gear set, selectively connectable to the input shaft and a transmission housing, a third shaft fixedly connected to the eighth element and output shaft, a fourth shaft fixedly connected to the third and fifth elements, a fifth shaft fixedly connected to the sixth, seventh, tenth, and another element of the fifth planetary gear set not connected to the second shaft, a sixth shaft fixedly connected to the twelfth element, a seventh shaft fixedly connected to a remaining element of the fifth planetary gear set not connected to the first and second shafts.

A planetary gear train of an automatic transmission for a vehicle may include a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, an input shaft mounted with the first, second, and third planetary gear sets, an output shaft mounted with the fourth planetary gear set, a first shaft, a second shaft directly connected with the input shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft selectively connectable with the fourth shaft, a seventh shaft selectively connectable with the input shaft, an eighth shaft gear-meshed with one shaft among the fourth and seventh shafts, a ninth shaft directly connected with the output shaft, a tenth shaft gear-meshed with a remaining shaft among the fourth and seventh shafts that is not gear-meshed with the eighth shaft, and transfer gears.

A planetary gear train includes: first to fourth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, and tenth to twelfth rotational elements; an input shaft axial to the first to third planetary gear sets; and an output shaft axial to the fourth planetary gear set. In particular, the first and fourth rotational elements, the second rotational element and the input shaft, the fifth and eighth rotational elements, and the eleventh rotational element and the output shaft are fixedly interconnected by first, second, fourth, and ninth shafts respectively. Moreover, the third, sixth, seventh, and ninth rotational elements are fixedly connected with third, fifth, sixth, and seventh shafts respectively, an eighth shaft is fixedly connected with the tenth rotational element and externally gear-meshed with the sixth shaft, and a tenth shaft fixedly connected with the twelfth rotational element and externally gear-meshed with the fourth shaft.

Growing community of inventors

Seoul, South Korea

Dong Hwan Hwang