US 9,958,035 B2Granted

Planetary gear train of automatic transmission for vehicles

AssigneeHyundai Motor Company

InventorsSeongwook Ji, Sueng Ho Lee, Jae Chang Kook, Dong Hwan Hwang, SeokJin Kim, Wonmin Cho, Hyun Sik Kwon, Jong Sool Park, Kyeong Hun Lee, Seong Wook Hwang

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

A planetary gear train of an automatic transmission for a vehicle, the planetary gear train may include an input shaft receiving power from an engine, an output shaft outputting shifted power of the engine, a first planetary gear set including first, second, and third rotating elements, a second planetary gear set including fourth, fifth, and sixth rotating elements, a third planetary gear set including seventh, eighth, and ninth rotating elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotating elements, and six control elements which are disposed at positions where at least one of the rotating elements is selectively connectable with another of the rotating elements or disposed at positions where rotating elements are selectively connectable to a transmission housing.

Claims8

Dependent claims

A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising:

an input shaft receiving power from an engine;
an output shaft outputting shifted power of the engine;
a first planetary gear set including first, second, and third rotating elements;
a second planetary gear set including fourth, fifth, and sixth rotating elements;
a third planetary gear set including seventh, eighth, and ninth rotating elements;
a fourth planetary gear set including tenth, eleventh, and twelfth rotating elements;
and
six control elements disposed at positions where at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotating elements is selectively connectable with another of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotating elements or disposed at positions where at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotating elements is selectively connectable to a transmission housing,
wherein the input shaft is directly connected to the first rotation element,
wherein the output shaft is directly connected to the eighth rotation element,
wherein the third rotation element is directly connected to the fifth rotation element,
wherein the fourth rotation element is directly connected to the transmission housing,
wherein the eighth rotation element is directly connected to the twelfth rotation element,
wherein the ninth rotation element is directly connected to the eleventh rotation element,
wherein at least one of the second rotation element and the seventh rotation element are selectively connectable to the transmission housing,
wherein the second rotation element is selectively connectable to the input shaft,
wherein the eleventh rotation element is selectively connectable to the input shaft,
wherein the second rotation element is selectively connectable to the tenth rotation element, and
wherein the sixth rotation element is selectively connectable to the tenth rotation element.

16 more elements

A planetary gear train of an automatic transmission for vehicles, the planetary gear train comprising:

an input shaft receiving power of an engine;
an output shaft outputting shifted power of the engine;
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 disposed at positions to selectively connect the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotation elements or at positions to selectively connect at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth rotation elements and a transmission housing;
a first rotational shaft including the first rotation element and directly connected to the input shaft;
a second rotational shaft including the second rotation element and selectively connectable to the transmission housing;
a third rotational shaft including the third rotation element and the fifth rotation element;
a fourth rotational shaft including the fourth rotation element and directly connected to the transmission housing;
a fifth rotational shaft including the sixth rotation element;
a sixth rotational shaft including the seventh rotation element and selectively connectable to the transmission housing;
a seventh rotational shaft including the eighth rotation element and the twelfth rotation element, and directly connected to the output shaft;
an eighth rotational shaft including the ninth rotation element and the eleventh rotation element, and selectively connectable to the input shaft;
and
a ninth rotational shaft including the tenth rotation element, and selectively connectable to at least one of the second rotational shaft and the fifth rotational shaft,
wherein the first planetary gear set comprises a single pinion planetary gear set, the first rotation element is a first sun gear, the second rotation element is a first planet carrier, and the third rotation element is a first ring gear,
wherein the second planetary gear set comprises a single pinion planetary gear set, the fourth rotation element is a second sun gear, the fifth rotation element is a second planet carrier, and the sixth rotation element is a second ring gear,
wherein the third planetary gear set comprises a single pinion planetary gear set, the seventh rotation element is a third sun gear, the eighth rotation element is a third planet carrier, and the ninth rotation element is a third ring gear, and
wherein the fourth planetary gear set comprises a single pinion planetary gear set, the tenth rotation element is a fourth sun gear, the eleventh rotation element is a fourth planet carrier, and the twelfth rotation element is a fourth ring gear.

18 more elements

A planetary gear train of an automatic transmission for vehicles, the planetary gear train comprising:

an input shaft receiving power of an engine;
an output shaft outputting shifted power;
a first planetary gear set comprising a single pinion planetary gear set, and including first, and second, and third rotation elements;
a second planetary gear set comprising a single pinion planetary gear set, and including fourth, fifth, and sixth rotation elements;
a third planetary gear set comprising a single pinion planetary gear set, and including seventh, eighth, and ninth rotation elements;
a fourth planetary gear set comprising a single pinion planetary gear set, and including tenth, eleventh, and twelfth rotation elements;
a first rotational shaft including the first rotation element and directly connected to the input shaft;
a second rotational shaft including the second rotation element and selectively connectable to a transmission housing;
a third rotational shaft including the third rotation element and the fifth rotation element;
a fourth rotational shaft including the fourth rotation element and directly connected to the transmission housing;
a fifth rotational shaft including the sixth rotation element;
a sixth rotational shaft including the seventh rotation element and selectively connectable to the transmission housing;
a seventh rotational shaft including the eighth rotation element and the twelfth rotation element, and directly connected to the output shaft;
an eighth rotational shaft including the ninth rotation element and the eleventh rotation element, and selectively connectable to the input shaft;
a ninth rotational shaft including the tenth rotation element, and selectively connectable to at least one of the second rotational shaft and the fifth rotational shaft;
a first clutch selectively connecting the input shaft and the second rotational shaft;
a second clutch selectively connecting the input shaft and the eighth rotational shaft;
a third clutch selectively connecting the second rotational shaft and the ninth rotational shaft;
a fourth clutch selectively connecting the fifth rotational shaft and the ninth rotational shaft;
a first brake selectively connecting the second rotational shaft and the transmission housing;
and
a second brake selectively connecting the sixth rotational shaft and the transmission housing.

19 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/248,563Filed 26 Aug 2016
Priority: KR 10-2015-01709902 Dec 2015
Published: US 2017/0159769 A18 Jun 2017
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16H 3/66
Gearings having three or more central gears: composed of a number of gear trains without drive passing from one train to another
F16H 2003/445
Using gears having orbital motion: without permanent connection between the input and the set of orbital gears
F16H 2200/0065
Characterised by the number of forward speeds: the gear ratios comprising nine forward speeds
F16H 2200/2012
Characterised by the number of sets of orbital gears: with four sets of orbital gears