Back to results
US 9,850,986 B2Granted
Planetary gear train of automatic transmission for vehicle
AssigneeHyundai Motor Company
InventorsSeongwook Ji, Seong Wook Hwang, Hyun Sik Kwon, Wonmin Cho, Jae Chang Kook
Life of this patent
Estimating the term…
Abstract
Nine or more forward speeds and at least one reverse speed are 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 four rotation elements, and six control elements for selectively interconnecting the rotation elements.
Claims10
A planetary gear train of an automatic transmission for a vehicle, comprising:
- an input shaft configured for receiving an engine torque;
- an output shaft configured for outputting a shifted 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 fourth planetary gear set having tenth, eleventh, and twelfth rotation elements;
- six control elements for selectively interconnecting the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotation elements and a transmission housing;
- a first connecting member connected with the first rotation element and directly connected with the transmission housing;
- a second connecting member connected with the second rotation element and the fifth rotation element, and selectively connectable with the transmission housing;
- a third connecting member connected with the third rotation element, and selectively connectable with the input shaft;
- a fourth connecting member connected with the fourth rotation element and directly connected with the input shaft;
- a fifth connecting member connected with the sixth rotation element and the ninth rotation element, and selectively connectable with the transmission housing;
- a sixth connecting member connected with the seventh rotation element and the tenth rotation element, and selectively connectable with the input shaft;
- a seventh connecting member connected with the eighth rotation element and the twelfth rotation element, and selectively connectable with the transmission housing;
- and
- an eighth connecting member connected with the eleventh rotation element and directly connected with the output shaft.
13 more elements
A planetary gear train of an automatic transmission for a vehicle, comprising:
- an input shaft configured for receiving an engine torque;
- an output shaft configured for outputting a shifted torque;
- a first planetary gear set as a single pinion planetary gear set having first, second, and third rotation elements;
- a second planetary gear set as a single pinion planetary gear set having fourth, fifth, and sixth rotation elements;
- a third planetary gear set as a single pinion planetary gear set having seventh, eighth, and ninth rotation elements;
- a fourth planetary gear set as a single pinion planetary gear set having tenth, eleventh, and twelfth rotation elements;
- a first connecting member connected with the first rotation element and directly connected with a transmission housing;
- a second connecting member connected with the second rotation element and the fifth rotation element, and selectively connectable with the transmission housing;
- a third connecting member connected with the third rotation element, and selectively connectable with the input shaft;
- a fourth connecting member connected with the fourth rotation element and directly connected with the input shaft;
- a fifth connecting member connected with the sixth rotation element and the ninth rotation element, and selectively connectable with the transmission housing;
- a sixth connecting member connected with the seventh rotation element and the tenth rotation element, and selectively connectable with the input shaft;
- a seventh connecting member connected with the eighth rotation element and the twelfth rotation element, and selectively connectable with the transmission housing;
- an eighth connecting member connected with the eleventh rotation element and directly connected with the output shaft;
- a first clutch selectively connecting the input shaft and the third connecting member;
- a second clutch selectively connecting the input shaft and the sixth connecting member;
- a third clutch selectively connecting the input shaft and the seventh connecting member;
- a first brake selectively connecting the second connecting member and the transmission housing;
- a second brake selectively connecting the fifth connecting member and the transmission housing;
- and
- a third brake selectively connecting the seventh connecting member and the transmission housing.
18 more elements
A planetary gear train of an automatic transmission for a vehicle, comprising:
- an input shaft configured for receiving an engine torque;
- an output shaft configured for outputting a shifted torque;
- a first planetary gear set as a single pinion planetary gear set having a first sun gear, a first planet carrier, and a first ring gear;
- a second planetary gear set as a single pinion planetary gear set having a second sun gear, a second planet carrier, and a second ring gear;
- a third planetary gear set as a single pinion planetary gear set having a third sun gear, a third planet carrier, and a third ring gear;
- a fourth planetary gear set as a single pinion planetary gear set having a fourth sun gear, a fourth planet carrier, and a fourth ring gear;
- a first connecting member connected with the first sun gear, and directly connected with a transmission housing;
- a second connecting member connected with the first planet carrier and the second planet carrier, and selectively connectable with the transmission housing;
- a third connecting member connected with the first ring gear, and selectively connectable with the input shaft;
- a fourth connecting member connected with the second sun gear and directly connected with the input shaft;
- a fifth connecting member connected with the second ring gear and the third ring gear, and selectively connectable with the transmission housing;
- a sixth connecting member connected with the third sun gear and the fourth sun gear, and selectively connectable with the input shaft;
- a seventh connecting member connected with the third planet carrier and the fourth ring gear, and selectively connectable with the transmission housing;
- an eighth connecting member connected with the fourth planet carrier, and directly connected with the output shaft;
- and
- six control elements selectively connecting the first, second, third, fourth, fifth, sixth, seventh, and eighth connecting members and the transmission housing.
13 more elements
Dependencies are inferred from the claim text.