US 2017/0284512 A1Published application

Planetary gear train of automatic transmission for vehicles

AssigneeHyundai Motor Company

InventorsWonmin CHO, Seong Wook HWANG, Hyun Sik KWON, Jae Chang KOOK, Seongwook JI

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Abstract

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 torque, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first shaft directly connected with the input shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft selectively connectable with each of the first shaft and the second shaft, a sixth shaft selectively connectable with the third shaft, and directly connected with the output shaft, and a seventh shaft selectively connectable with the second shaft.

Claims14

Dependent claims

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

an input shaft receiving torque of an engine;
an output shaft outputting torque;
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 third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;
a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;
a first shaft connecting the first rotation element and the fifth rotation element and directly connected with the input shaft;
a second shaft connected with the second rotation element;
a third shaft connecting the third rotation element and ninth rotation element;
a fourth shaft connected with the fourth rotation element;
a fifth shaft connected with the eighth rotation element and selectively connectable with each of the first shaft and the second shaft;
a sixth shaft connected with the eleventh rotation element, selectively connectable with the third shaft, and directly connected with the output shaft;
and
a seventh shaft connected with the twelfth rotation element and selectively connectable with the second shaft.

11 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 torque;
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 third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;
and
a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element,
wherein the input shaft is directly connected with the fifth rotation element,
the output shaft is directly connected with the eleventh rotation element,
the first rotation element is directly connected with the fifth rotation element,
the third rotation element is directly connected with the ninth rotation element,
the fourth rotation element is directly connected with a transmission housing,
the seventh rotation element is directly connected with the tenth rotation element and selectively connectable with the sixth rotation element,
the eighth rotation element is selectively connectable with each of the second rotation element and the fifth rotation element,
the eleventh rotation element is selectively connectable with the ninth rotation element, and
the twelfth rotation element is selectively connectable with the second rotation element.

13 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 torque;
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 third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;
and
a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element,
wherein the input shaft is directly connected with the fifth rotation element,
the output shaft is directly connected with the eleventh rotation element,
the first rotation element is directly connected with the fifth rotation element,
the third rotation element is directly connected with the ninth rotation element,
the sixth rotation element is directly connected with the seventh rotation element and the tenth rotation element,
the eighth rotation element is selectively connectable with each of the second rotation element and the fifth rotation element,
the eleventh rotation element is selectively connectable with the ninth rotation element, and
the twelfth rotation element is selectively connectable with the second rotation element.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/265,795Filed 14 Sep 2016
Priority: KR 10-2016-003847230 Mar 2016
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 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 2200/0073
Characterised by the number of forward speeds: the gear ratios comprising eleven forward speeds
F16H 2200/2012
Characterised by the number of sets of orbital gears: with four sets of orbital gears
F16H 2200/2046
Characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes: with six engaging means

Family

US 10,030,742 B2Related patent
US 2017/0284512 A1This patent

From the US filing history. Foreign family members aren’t listed.

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