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 parallel to 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 fourth 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 connected with the fifth rotation element;
a fifth shaft connected with the sixth rotation element and selectively acting as a fixed element;
a sixth shaft connected with the eighth rotation element, and selectively connectable with the fourth shaft;
a seventh shaft connected with the ninth rotation element, and selectively connectable with the input shaft;
an eighth shaft connected with the tenth rotation element and gear-meshed with one shaft among the fourth and seventh shafts;
a ninth shaft connected with the eleventh rotation element and directly connected with the output shaft;
a tenth shaft connected with the twelfth rotation element, and gear-meshed with a remaining shaft among the fourth and seventh shafts that is not gear-meshed with the eighth shaft; and
transfer gears, each gear-meshed with at least one of the first to 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, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, an input shaft mounted with the first, second, and third planetary gear sets, an output shaft mounted with the fourth planetary gear set, a first shaft, a second shaft directly connected with the input shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft selectively connectable with the fourth shaft, a seventh shaft selectively connectable with the input shaft, an eighth shaft gear-meshed with one shaft among the fourth and seventh shafts, a ninth shaft directly connected with the output shaft, a tenth shaft gear-meshed with a remaining shaft among the fourth and seventh shafts that is not gear-meshed with the eighth shaft, and transfer gears.
7 Citations
26 Claims
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1. A planetary gear train of an automatic transmission for a vehicle, comprising:
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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 parallel to 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 fourth 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 connected with the fifth rotation element; a fifth shaft connected with the sixth rotation element and selectively acting as a fixed element; a sixth shaft connected with the eighth rotation element, and selectively connectable with the fourth shaft; a seventh shaft connected with the ninth rotation element, and selectively connectable with the input shaft; an eighth shaft connected with the tenth rotation element and gear-meshed with one shaft among the fourth and seventh shafts; a ninth shaft connected with the eleventh rotation element and directly connected with the output shaft; a tenth shaft connected with the twelfth rotation element, and gear-meshed with a remaining shaft among the fourth and seventh shafts that is not gear-meshed with the eighth shaft; and transfer gears, each gear-meshed with at least one of the first to ninth shafts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A planetary gear train of an automatic transmission for a vehicle, comprising:
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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 parallel to the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft, wherein the first and fourth rotation elements are directly connected together 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 fifth rotation element is gear-meshed with one rotation element among the tenth and twelfth rotation elements and selectively connectable with the eighth rotation element, the sixth rotation element is selectively connectable with the transmission housing, the ninth rotation element is gear-meshed with a remaining rotation element among the tenth and twelfth rotation elements that is not gear-meshed with the fifth rotation element, and selectively connectable with the input shaft, and the eleventh rotation element is directly connected with the output shaft. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification