PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE
First Claim
1. A planetary gear train of an automatic transmission for a vehicle, comprising:
- 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;
an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft;
an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft;
a first shaft connecting the first rotation element and the sixth rotation element and selectively acting as a fixed element;
a second shaft connected with the second rotation element and directly connected with the input shaft;
a third shaft interconnecting the third rotation element and the seventh rotation element;
a fourth shaft connecting the fourth rotation element and the ninth rotation element and selectively connectable with the second shaft;
a fifth shaft connected with the fifth rotation element;
a sixth shaft connected with the eighth rotation element and engaged with the output shaft selectively;
a seventh shaft connected with the tenth rotation element and selectively acting as a fixed element;
an eighth shaft connected with the eleventh rotation element and directly connected with the output shaft;
a ninth shaft connected with the twelfth rotation element and engaged with the fifth shaft; and
two transfer gears, each of which is gear-meshed with one of the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth shafts.
1 Assignment
0 Petitions
Accused Products
Abstract
A planetary gear train of an automatic transmission for a vehicle may include a first planetary gear set including, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, an input shaft, an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on external circumference of the output shaft, a first shaft selectively acting as a fixed element, a second shaft directly connected with the input shaft, a third shaft, a fourth shaft selectively connectable with the second shaft, a fifth shaft, a sixth shaft engaged with the output shaft selectively, a seventh shaft selectively acting as a fixed element, an eighth shaft directly connected with the output shaft, a ninth shaft engaged with the fifth shaft, and two transfer gears, each of which is gear-meshed with one of the shafts.
2 Citations
18 Claims
-
1. A planetary gear train of an automatic transmission for a vehicle, comprising:
-
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; an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft; an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft; a first shaft connecting the first rotation element and the sixth rotation element and selectively acting as a fixed element; a second shaft connected with the second rotation element and directly connected with the input shaft; a third shaft interconnecting the third rotation element and the seventh rotation element; a fourth shaft connecting the fourth rotation element and the ninth rotation element and selectively connectable with the second shaft; a fifth shaft connected with the fifth rotation element; a sixth shaft connected with the eighth rotation element and engaged with the output shaft selectively; a seventh shaft connected with the tenth rotation element and selectively acting as a fixed element; an eighth shaft connected with the eleventh rotation element and directly connected with the output shaft; a ninth shaft connected with the twelfth rotation element and engaged with the fifth shaft; and two transfer gears, each of which is gear-meshed with one of the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth shafts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A planetary gear train of an automatic transmission for a vehicle, comprising:
-
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; an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft; and an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on external circumference of the output shaft, wherein the first rotation element is directly connected with the sixth rotation element and selectively connectable with a transmission housing. the second rotation element is directly connected with the input shaft, the third rotation element is directly connected with the seventh rotation element, the fourth rotation element is directly connected with the ninth rotation element, the fifth rotation element is gear-meshed with the twelfth rotation element, the eighth rotation element is engaged with the output shaft selectively, the tenth rotation element is selectively connectable with the transmission housing, and the eleventh rotation element is directly connected with the output shaft. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification