Hyundai Motor Company

Kia Motors Corporation

Myonghoon Noh

Kangsoo Seo

Jae Chang Kook

Chang Wook Lee

JongSool Park

Hyu Tae Shim

Hyukjun Lee

Seong Wook Hwang

Seongwook Ji

Wonmin Cho

Jin Hee Lee

Jinseok Kim

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving a torque of an engine, an output shaft disposed substantially in parallel with the input shaft at a predetermined distance and outputting a changed torque, a first planetary gear set disposed on the input shaft and including a first, second and third rotation elements, a second planetary gear set disposed on the output shaft and including a fourth, fifth and sixth rotation elements, four transfer gears forming the externally-meshed gears, and frictional elements including clutches connecting the input shaft and the rotation elements of the first and second planetary gear sets and brakes connecting the rotation elements of the first and second planetary gear sets and a transmission housing.

Planetary gear train of automatic transmission for vehicles

A planetary gear train of an automatic transmission may include: an input shaft; an output shaft parallel with the input shaft; a first planetary gear set on the input shaft including a first, second and third rotation elements, the first selectively connected to the input shaft, and the third selectively connected to the input shaft; a second planetary gear set on the output shaft including a fourth, fifth and sixth rotation elements, the first selectively connected to the input shaft through two gear ratio paths and selectively connected to a transmission housing, the fifth selectively connected to the input shaft and the transmission housing, and the sixth connected to the second rotation element and directly connected to the output shaft; four transfer gears; and frictional elements including clutches and brakes.

Planetary gear train of automatic transmission for vehicle

A planetary gear train of an automatic transmission for a vehicle may include: an input; an output; a first planetary gear set on the input including a first rotation element selectively connected to the input and selectively operated as a fixed element, a second rotation element selectively connected to the input and a third rotation element; a second planetary gear set on the output including a fourth rotation element connected to the second rotation element and selectively operated as a fixed element, a fifth rotation element connected to the third rotation element and directly connected to the output, and a sixth rotation element selectively connected to the input; four transfer gears; and frictional elements including clutches connecting the input and the rotation elements of the first and second planetary gear sets, and brakes connecting the rotation elements of the first and second planetary gear sets and a transmission housing.

A planetary gear train of an automatic transmission may include a first shaft receiving engine torque, a second shaft disposed in parallel to the first shaft, a first planetary gear set on the first shaft including a first element operated as a fixed element, a second element directly connected to the first shaft, and a third element, a compound planetary gear set formed by combining a second planetary gear set and a third planetary gear set including a fourth element selectively connected to the first shaft and the third element, a fifth element connected to an output gear, a sixth element selectively connected to the first element, and a seventh element selectively connected to the third element through a gear.

A planetary gear train may include a first shaft receiving torque from an engine, a second shaft disposed in parallel with the first shaft, a first planetary gear set disposed on the first shaft including a first rotation element, a second rotation element and a third rotation element operated as an output element, and a second planetary gear set disposed on the second shaft including a fourth rotation element, a fifth rotation element, and a sixth rotation element. A planetary gear train may further include four transfer gears connecting rotation elements of the second planetary gear set with the first shaft and rotation elements of the first planetary gear set, and frictional elements connecting rotation elements with each other or with the first shaft and brakes connecting with the transmission housing.

A planetary gear train may include a first shaft receiving torque of an engine, a second shaft selectively connected to the first shaft through an externally-meshed gear, a first planetary gear set disposed on the first shaft, and including a first rotation element selectively operated as a fixed element, a second rotation element directly connected to the first shaft, and a third rotation element, a compound planetary gear set including a fourth rotation element selectively connected to the third rotation element through an externally-meshed gear, a fifth rotation element selectively connected to the first rotation element through an externally-meshed gear, a sixth rotation element directly connected to an output gear, and a seventh rotation element directly connected to the second shaft and selectively connected to the third rotation element through an externally-meshed gear, and frictional elements selectively connecting the rotation elements with each other or with a transmission housing.

A planetary gear train of an automatic transmission may include an input shaft, an output shaft, a compound planetary gear set disposed on the output shaft, and including a first rotation element selectively connected to the input shaft through two paths respectively having an externally-meshed gear and operated as a selective fixed element, a second rotation element selectively connected to the input shaft through one path having an externally-meshed gear and operated as a selective fixed element, a third rotation element connected to the output shaft, and a fourth rotation element selectively connected to the input shaft through one path having an externally-meshed gear, three transfer gears forming the externally-meshed gears, and friction elements provided with clutches selectively connecting the first, second, and fourth rotation elements to the input shaft and brakes selectively connecting the first and second rotation elements to a transmission housing.

A planetary gear train of an automatic transmission may include: a first shaft; a second shaft parallel with the first shaft; a first gear set on the first shaft including a first element selectively connected to the first shaft, a second element selectively connected to the first shaft and a transmission housing, and a third element; a second gear set on the second shaft including a fourth element operably connected to the first element and selectively connected to the first shaft, a fifth element connected to the third element and directly connected to an output gear, and a sixth element selectively connected to the first shaft and selectively connected to the housing; three transfer gears; and frictional elements including clutches selectively connecting the first shaft to elements of the first and second gear sets and brakes selectively connecting elements of the first and second gear sets to the housing.

A vehicular planetary gear train may include: a first input shaft; a second parallel shaft; a first planetary gear set including a first element selectively connected to the first shaft, a second element selectively connected to the first shaft and/or a transmission housing, and a third output element; a second planetary gear set including a fourth element connected to the second element, a fifth element connected to the third element and directly connected to an output gear, and a sixth element selectively connected to the first shaft through two paths; four transfer gears connecting the fourth and fifth elements respectively to the second and third elements, and connecting the sixth element to the first shaft through two paths; and frictional elements selectively connecting the first, second, and sixth elements to the first shaft, and a brake selectively connecting the second element to the transmission housing.

A planetary gear train of an automatic transmission may include: a first input shaft; a second parallel shaft; a compound planetary gear set on the second shaft, and including a first rotation element engageable with the first shaft through two paths respectively having an external gear, a second rotation element connected to an output gear so as to be operated as an output element, a third rotation element engageable with the first shaft through one path having an external gear and selectively fixed, and a fourth rotation element engageable with the first shaft through one path having an external gear and selectively fixed; four transfer gears forming the external gears; frictional elements including clutches selectively connecting the first, third, and fourth rotation elements to the first shaft and brakes selectively connecting the third and fourth rotation elements to a transmission housing.

A planetary gear train includes first, second, third and fourth planetary gear sets, first rotating body including first sun gear, second rotating body including first planet carrier, third rotating body including first ring gear and third and fourth sun gears, fourth rotating body including second sun gear, fifth rotating body including second planet carrier, sixth rotating body including second ring gear and third planet carrier, seventh rotating body including third ring gear and fourth planet carrier, an eighth rotating body including fourth ring gear, first clutch variably connecting the first and fourth rotating bodies, second clutch variably connecting the second and fourth rotating bodies, third clutch variably connecting the third and fifth rotating bodies, fourth clutch variably connecting the fifth and eighth rotating bodies, first brake variably connecting the first rotating body and the transmission housing, and second brake variably connecting the eighth rotating body and the transmission housing.

Planetary gear train of an automatic transmission for a vehicle

A planetary gear train of an automatic transmission for a vehicle include: an input shaft; an output shaft; a first compound planetary gear set combining first and second planetary gear sets and firstly changing torque input through one input path and two variable input paths into six speeds; a second compound planetary gear set combining third and fourth planetary gear sets, secondly changing the six speeds a rotation speed of the input shaft input through one variable input path into eleven forward speeds and reverse speed, and finally outputting the changed rotation speed; and friction members including clutches interposed between two rotation shafts or between a rotation shaft and the input shaft, and brakes interposed between a rotation shaft and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include: a first shaft; a second parallel shaft; a first planetary gear set on the first shaft including a first element selectively connected to the first shaft, a second element selectively connected to the first shaft or a transmission housing, and a third output element; a second planetary gear set on the second shaft, and including a fourth element selectively connected to the first shaft, connected to the first element, and selectively connected to the transmission housing, a fifth element connected to the third element and directly connected to an output gear, and a sixth element selectively connected to the first shaft; four transfer gears; and frictional elements including clutches selectively connecting the first, second, fourth, and sixth elements with the first shaft and brakes selectively connecting the second and fourth elements with the transmission housing.

An automatic transmission planetary gear train for a vehicle may include a first shaft receiving a torque of an engine, a second shaft disposed substantially in parallel with the first shaft, a first planetary gear set disposed on the first shaft and including a first sun gear, a first planet carrier, and a first ring gear as rotation elements, a second planetary gear set disposed on the second shaft and including a second sun gear, a second planet carrier, and a second ring gear as rotation elements, a third planetary gear set disposed on the second shaft and including a third sun gear, a third planet carrier, and a third ring gear as rotation elements, three transfer gears forming the externally-meshed gears, and frictional elements selectively interconnecting the rotation elements of the first, second, and third planetary gear sets or selectively connecting a rotation element to a transmission housing.

A planetary gear train of an automatic transmission may include: a first shaft receiving engine torque; a second parallel shaft; a first planetary gear set on the first shaft including a first element engaging the first shaft and a transmission housing, a second element engaging the first shaft and the transmission housing, and a third output element; a second planetary gear set on the second shaft, and including a fourth element engaging the first element, a fifth element connected to the third element and directly connected to an output gear, and a sixth element connected to the first shaft and engaging the first element; three transfer gears; and frictional elements including four clutches connecting the first and second elements to the first shaft and connecting the first element to the fourth and sixth elements, and two brakes connecting the first and second elements to the transmission housing.

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Seongnam-si, South Korea

Myonghoon Noh