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 and second 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 third and fourth planetary gear sets on an external circumference of the output shaft;
a first shaft connected with the first rotation element;
a second shaft interconnecting the second rotation element and the sixth rotation element;
a third shaft connected with the third rotation element and directly connected with the input shaft;
a fourth shaft connected with the fourth rotation element;
a fifth shaft connected with the fifth rotation element;
a sixth shaft connecting the seventh rotation element and the tenth rotation element, and gear-meshed with the fourth shaft;
a seventh shaft connected with the eighth rotation element and engaged with the third shaft selectively;
an eighth shaft interconnecting the ninth rotation element and the eleventh rotation element and directly connected with the output shaft;
a ninth shaft connected with the twelfth rotation element; and
transfer gears each gear-meshed with at least 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, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, an input shaft mounted with the first and second 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 third and fourth planetary gear sets on an external circumference of the output shaft, a first shaft, a second shaft, a third shaft directly connected with the input shaft, a fourth shaft, a fifth shaft, a sixth shaft gear-meshed with the fourth shaft, a seventh shaft engaged with the third shaft selectively, an eighth shaft directly connected with the output shaft, a ninth shaft, and transfer gears each gear-meshed with at least one of the shafts.
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Citations
19 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 and second 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 third and fourth planetary gear sets on an external circumference of the output shaft; a first shaft connected with the first rotation element; a second shaft interconnecting the second rotation element and the sixth rotation element; a third shaft connected with the third rotation element and directly connected with the input shaft; a fourth shaft connected with the fourth rotation element; a fifth shaft connected with the fifth rotation element; a sixth shaft connecting the seventh rotation element and the tenth rotation element, and gear-meshed with the fourth shaft; a seventh shaft connected with the eighth rotation element and engaged with the third shaft selectively; an eighth shaft interconnecting the ninth rotation element and the eleventh rotation element and directly connected with the output shaft; a ninth shaft connected with the twelfth rotation element; and transfer gears each gear-meshed with at least 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, 10)
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11. 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 and second 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 third and fourth planetary gear sets on an external circumference of the output shaft, wherein the first rotation element is selectively connectable with a transmission housing, the second rotation element is directly connected with the sixth rotation element, the third rotation element is directly connected with the input shaft, the fifth rotation element is selectively connectable with at least one of the input shaft and the transmission housing, the seventh and tenth rotation elements are directly connected to each other and gear-meshed with the fourth rotation element, the eighth rotation element is gear-meshed with the third rotation element selectively, the ninth rotation element and the eleventh rotation element are directly connected with the output shaft, and the twelfth rotation element is selectively connectable with the transmission housing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification