Hyundai Motor Company

Kia Motors Corporation

Hyundia Motor Company

Kangsoo Seo

Jae Chang Kook

Wonmin Cho

Seongwook Ji

Seong Wook Hwang

Myeong Hoon Noh

JongSool Park

Chang Wook Lee

Hyu Tae Shim

Myonghoon Noh

Won-jun Sung

Changwook Lee

Donghwan Hwang

Jaechang Kook

Hyukjun Lee

Horim Yang

Seongwook Hwang

Myeonghoon Noh

Wookjin Jang

Hyutae Shim

Dong Hwan Hwang

Jaeyoung Jeon

Sueng Ho Lee

KyeongHun Lee

Wonseok Oh

Ildae Cho

Hyun Sik Kwon

Jin Hee Lee

Jinseok Kim

Sung Hoon Park

Sang Bum Baek

Seongwook Jl

Young Ji Park

Myong Hoon Noh

A transmission for a vehicle may include a first input shaft selectively connected to an engine through a first clutch, a second hollow input shaft disposed in a front side portion of the first input shaft and selectively connected to the engine through a second clutch, a continuously variable transmission mechanism (CV) that continuously shifts and outputs rotation power transferred from the first input shaft, a shift output mechanism that receives rotation power transferred from driving gears on the second input shaft and the CV through driven gears connected to an external gear and selectively shifts and outputs the rotation power, a reverse idle mechanism that transfers the rotation power of the first input shaft to the shift output mechanism in a reverse direction, and a final reduction mechanism that reduces the rotation power output from the shift output mechanism.

Power transmission apparatus for hybrid electric vehicle

A planetary gear train of automatic transmission may include input shaft, output gear, first to fourth planetary gear sets, first rotating shaft including first sun gear, second rotating shaft including first planet carrier, second ring gear, third planet carrier, and fourth ring gear, third rotating shaft including first ring gear and third ring gear, and selectively connected to transmission housing, fourth rotating shaft including second sun gear, and selectively connected to transmission housing, fifth rotating shaft including second planet carrier, and selectively connected with first rotating shaft and simultaneously and directly connected with input shaft, sixth rotating shaft including third sun gear, seventh rotating shaft including fourth sun gear, and selectively connected with sixth rotating shaft and simultaneously and selectively connected to transmission housing, eighth rotating shaft including fourth planet carrier, and selectively connected with sixth rotating shaft and simultaneously and directly connected with output gear, and six friction elements.

Planetary gear train of automatic transmission for vehicle

A power transmission system may include: an engine power delivery module configured to transmit power of the engine directly to the first motor/generator as driving power for generating electricity and to selectively transmit the power of the engine as driving power for driving the vehicle, and a motor power delivery module disposed in parallel with and independently from the engine power delivery module, and configured to directly transmit power of the second motor/generator as driving power for driving the vehicle.

Power transmission system of hybrid electric vehicle

A planetary gear train of an automatic transmission for vehicles may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first shaft, a second rotation shaft, a third rotation shaft, a fourth rotation shaft selectively connected to the input shaft, a fifth rotation shaft selectively connected to the input shaft or selectively connected to the transmission housing, a sixth rotation shaft directly connected to the output shaft to be continuously operated as an output element, a seventh rotation shaft selectively connected to the transmission housing, an eighth rotation shaft selectively connected to the third rotation shaft, a ninth rotation shaft directly connected to the input shaft to be continuously operated as an input element, and six friction elements.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft selectively connected to a transmission housing, a second rotation shaft, a third rotation shaft selectively connected to the transmission housing, a fourth rotation shaft directly connected to the input shaft, a fifth rotation shaft selectively connected to the second rotation shaft, a sixth rotation shaft, a seventh rotation shaft selectively connected to the input shaft, and selectively connected to the fifth rotation shaft or the sixth rotation shaft, and an eighth rotation shaft directly connected to the output shaft.

Planetary gear train of automatic transmission for vehicles

A power transmission system of hybrid electric vehicle includes an input shaft, counter shaft, an output shaft, first motor/generator, second motor/generator, first planetary gear set, second planetary gear set to selectively externally gear-connect fourth rotation element to third rotation element through counter shaft while being directly connected to counter shaft and to directly connect fifth rotation element to output shaft and selectively connect sixth rotation element to transmission housing, first transfer gear disposed between second rotation element and output shaft, second transfer gear disposed between third rotation element and counter shaft, variable direct connection device to selectively connect two of three rotation elements of second planetary gear set, and variable connection device to selectively connect sixth rotation element to transmission housing or selectively external gear-connect third rotation element to fourth rotation element.

A planetary gear train may include an input shaft, an output shaft, first and second planetary gear sets each having three rotation elements, a first rotation shaft directly connected to one rotation element of the second planetary gear set and selectively connected to the input shaft, a second rotation shaft directly connected to one rotation element of the first planetary gear set and another rotation element of the second planetary gear set, and directly connected to the output shaft, a third rotation shaft directly connected to another rotation element of the first planetary gear set and the remaining rotation element of the second planetary gear set, and selectively connected to the input shaft and/or selectively connected to a transmission housing, and a fourth rotation shaft directly connected to the remaining rotation element of the first planetary gear set, and selectively connected to the input shaft through two paths and/or selectively connected to the transmission housing.

A power transmission system of a hybrid electric vehicle which uses an engine and first and second motor/generators as power sources may include an input shaft receiving torque of the engine, an intermediate shaft parallel with and apart from the input shaft, an output shaft relatively rotatable with respect to the intermediate shaft, a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element, a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element, a first transfer gear connecting the second rotation element with the output shaft, a second transfer gear connecting the input shaft or the first rotation element with the sixth rotation element, and a first clutch selectively connecting two rotation elements among three rotation elements of the second planetary gear set.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft selectively connected to a transmission housing, a second rotation shaft, a third rotation shaft selectively connected to the transmission housing, a fourth rotation shaft directly connected to the input shaft, a fifth rotation shaft, a sixth rotation shaft selectively connected to the second and fourth rotation shafts, a seventh rotation shaft selectively connected the second rotation shaft, an eighth rotation shaft selectively connected to the seventh rotation shaft, and directly connected to the output shaft, and six friction elements disposed to selectively connect the rotation shafts and selectively connect the rotation shafts with the transmission housing.

A planetary gear train of an automatic transmission may include input shaft, output shaft, first planetary gear set including first to third rotation elements, second planetary gear set including fourth to sixth rotation elements, third planetary gear set including seventh to ninth rotation elements, fourth planetary gear set including tenth to twelfth rotation elements, and six control elements disposed at portions selectively connecting between the rotation elements and between the rotation elements and a transmission housing, wherein the input shaft is directly connected to the fourth rotation element and the eighth rotation element, the output shaft is directly connected to the eleventh rotation element, the tenth rotation element is directly connected to the third rotation element while being selectively connected to the seventh rotation element, the second rotation element is selectively connected to the sixth rotation element, and the first rotation element is directly connected to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft directly connected to the input shaft, a second rotation shaft selectively connected to a transmission housing, a third rotation shaft, a fourth rotation shaft, a fifth rotation shaft directly connected to the transmission housing, a sixth rotation shaft, a seventh rotation shaft selectively connected to the fourth rotation shaft, and selectively connected to the transmission housing, an eighth rotation shaft selectively connected to the third rotation shaft, and directly connected to the output shaft, and a ninth rotation shaft selectively connected to the second rotation shaft.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving power from an engine, an output shaft outputting the power changed in speed, a first planetary gear set, a second planetary gear, a third planetary gear set, a fourth planetary gear set, a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft selectively connected with the first rotating shaft and simultaneously selectively connected with a transmission housing, a fifth rotating shaft selectively connected with the first rotating shaft and simultaneously directly connected with the input shaft, a sixth rotating shaft selectively connected with the third rotating shaft and simultaneously selectively connected with the transmission housing, a seventh rotating shaft selectively connected with the first rotating shaft, an eighth rotating shaft directly connected with the output shaft, and six friction elements.

A planetary gear train of an automatic transmission for vehicles may include an input shaft receiving torque of an engine, an output shaft outputting changed torque, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotational shaft selectively connected to a transmission housing, a second rotational shaft directly connected to the input shaft, a third rotational shaft, a fourth rotational shaft, a fifth rotational shaft selectively connected to the first rotational shaft or the second rotational shaft, a sixth rotational shaft directly connected to the output shaft, a seventh rotational shaft selectively connected to the transmission housing, an eighth rotational shaft selectively connected to the fourth rotational shaft or the fifth rotational shaft, and six friction elements interposed between the rotational shafts, or between at least one rotational shaft and the transmission housing to connect selectively.

A power transmission system of a hybrid electric vehicle may include an input shaft to which power from an engine is input, an output shaft, a planetary gear set including a first rotation element being driven by electrical driving force, a second rotation element being externally engaged with the output shaft as an output element, and a third rotation element being driven by rotational power of an engine, a first motor/generator directly connected to the first rotation element of the planetary gear set, a second motor/generator selectively externally engaged with the output shaft, a first transfer gear, a second transfer gear, a variable connecting unit selectively connecting the first transfer gear to the input shaft or the output shaft, and a variable direct coupling unit selectively connecting two rotation elements among the three rotation elements, of the planetary gear set.

A planetary gear train of an automatic transmission of a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque, a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear, a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear, a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear, a fourth planetary gear set including a fourth sun gear, a fourth planet carrier, and a fourth ring gear, a first rotation shaft, a second rotation shaft, a third rotation shaft, a fourth rotation shaft, a fifth rotation shaft, a sixth rotation shaft, a seventh rotation shaft, and an eighth rotation shaft.

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Yongin-si, South Korea

Kangsoo Seo