PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE
First Claim
1. A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus 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 fixedly connected to the third rotation element and selectively connectable to the input shaft;
a second shaft fixedly connected to the fourth rotation element and selectively connectable to the input shaft;
a third shaft fixedly connected to the twelfth rotation element and the output shaft;
a fourth shaft fixedly connected to the first rotation element, the sixth rotation element, and the eighth rotation element;
a fifth shaft fixedly connected to the ninth rotation element and the tenth rotation element;
a sixth shaft fixedly connected to the second rotation element, the fifth rotation element, and the eleventh rotation element; and
a seventh shaft fixedly connected to the seventh rotation element.
1 Assignment
0 Petitions
Accused Products
Abstract
A planetary gear train may include: an input shaft; an output shaft; a first planetary gear set including first, second, and third rotation elements; a second planetary gear set including fourth, fifth, and sixth rotation elements; a third planetary gear set including seventh, eighth, and ninth rotation elements; a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements; four clutches, each selectively connecting at least one of the first to twelfth rotation elements to another rotation element or the input shaft; and two brakes, each selectively connectable at least one of the first to twelfth rotation elements to a transmission housing.
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Citations
20 Claims
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1. A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus comprising:
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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 fixedly connected to the third rotation element and selectively connectable to the input shaft; a second shaft fixedly connected to the fourth rotation element and selectively connectable to the input shaft; a third shaft fixedly connected to the twelfth rotation element and the output shaft; a fourth shaft fixedly connected to the first rotation element, the sixth rotation element, and the eighth rotation element; a fifth shaft fixedly connected to the ninth rotation element and the tenth rotation element; a sixth shaft fixedly connected to the second rotation element, the fifth rotation element, and the eleventh rotation element; and a seventh shaft fixedly connected to the seventh rotation element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus comprising:
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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 fixedly connected to the third rotation element and selectively connectable to the input shaft; a second shaft fixedly connected to the fourth rotation element and selectively connectable to the input shaft; a third shaft fixedly connected to the twelfth rotation element and the output shaft; a fourth shaft fixedly connected to the first rotation element, the sixth rotation element, and the eighth rotation element; a fifth shaft fixedly connected to the ninth rotation element and the tenth rotation element; and a plurality of shafts formed by combinations of remaining rotation elements among the first to twelfth rotation elements of the first, second, third, and fourth planetary gear sets that are not connected to the first to fifth shafts, and each thereof selectively connectable to a transmission housing. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus comprising:
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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 each of the third rotation element and the fourth rotation element is selectively connectable to the input shaft, wherein the twelfth rotation element is fixedly connected to the output shaft, wherein the first rotation element is fixedly connected to the sixth rotation element and the eighth rotation element, wherein the second rotation element is fixedly connected to the fifth rotation element and the eleventh rotation element and is selectively connectable to a transmission housing, wherein the seventh rotation element is selectively connectable to the transmission housing, wherein the eighth rotation element is selectively connectable to the seventh rotation element and the twelfth rotation element, and wherein the ninth rotation element is fixedly connected to the tenth rotation element. - View Dependent Claims (17, 18, 19, 20)
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Specification