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US 10,094,447 B2Granted
Planetary gear train of automatic transmission for vehicles
AssigneeHyundai Motor Company
InventorsHyun Sik Kwon, Seong Wook Hwang, Woo Jin Chang, Wonmin Cho, Jae Chang Kook, Seongwook Ji
Life of this patent
Estimating the term…
Abstract
Eight or more forward speeds and at least one reverse speed is achieved by a planetary gear train of an automatic transmission for a vehicle including an input shaft, an output shaft, three planetary gear sets respectively having three rotation elements, and six control elements for selectively interconnecting the rotation elements.
Claims7
A planetary gear train of an automatic transmission for a vehicle, comprising:
- an input shaft receiving torque of an engine;
- an output shaft outputting changed torque;
- a first planetary gear set having first, second, and third rotation elements;
- a second planetary gear set having fourth, fifth, and sixth rotation elements;
- a third planetary gear set having seventh, eighth, and ninth rotation elements;
- a first rotation shaft including the first rotation element and the ninth rotation element and selectively connectable to the input shaft;
- a second rotation shaft including the second rotation element and the fifth rotation element;
- a third rotation shaft including the third rotation element and selectively connectable to the input shaft or a transmission housing;
- a fourth rotation shaft including the fourth rotation element and selectively connectable to the first rotation element;
- a fifth rotation shaft including the sixth rotation element and directly connected to the transmission housing;
- a sixth rotation shaft including the seventh rotation element and selectively connectable to the second rotation element;
- and
- a seventh rotation shaft including the eighth rotation element and directly connected to the output shaft to be selectively connectable to the fourth rotation shaft.
10 more elements
A planetary gear train of an automatic transmission for a vehicle, comprising:
- an input shaft receiving torque of an engine;
- an output shaft outputting changed torque;
- a first planetary gear set that is a single-pinion planetary gear set and includes a first sun gear, a first planet carrier, and a first ring gear;
- a second planetary gear set that is a single-pinion planetary gear set and includes a second sun gear, a second planet carrier, and a second ring gear;
- a third planetary gear set that is a single-pinion planetary gear set, and includes a third sun gear, a third planet carrier, and a third ring gear;
- a first rotation shaft including the first sun gear and the third ring gear and selectively connectable to the input shaft;
- a second rotation shaft including the first planet carrier and the second planet carrier;
- a third rotation shaft including the first ring gear and selectively connectable to the input shaft and a transmission housing;
- a fourth rotation shaft including the second sun gear and selectively connectable to the first rotation shaft;
- a fifth rotation shaft including the second ring gear and directly connected to the transmission housing;
- a sixth rotation shaft including the third sun gear and selectively connectable to the second rotation shaft;
- and
- a seventh rotation shaft including the third planet carrier and selectively connected to the fourth rotation shaft, and directly connected to the output shaft.
10 more elements
Dependencies are inferred from the claim text.