Planetary gear train of automatic transmission for vehicle
First Claim
1. A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising:
- a first planetary gear set having first, second, and third rotational elements;
a second planetary gear set having fourth, fifth, and sixth rotational elements;
a third planetary gear set having seventh, eighth, and ninth rotational elements;
a fourth planetary gear set having tenth, eleventh, and twelfth rotational elements;
a first external gear set having thirteenth and fourteenth rotational elements;
a second external gear set having fifteenth and sixteenth rotational elements;
an input shaft coaxially arranged with the first, second, and third planetary gear sets and the thirteenth and fifteenth rotational elements; and
an output shaft arranged in parallel with the input shaft and coaxial with the fourth planetary gear set and the fourteenth and sixteenth rotational elements,wherein the second rotational element is fixedly connected with the input shaft,the seventh rotational element is externally gear-meshed with the tenth rotational element through the first external gear set,the fifth rotational element is externally gear-meshed with the twelfth rotational element through the second external gear set, andthe eleventh rotational element is fixedly connected with the output shaft.
1 Assignment
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Accused Products
Abstract
A planetary gear train of an automatic transmission includes: first to fourth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, and tenth to twelfth rotational elements; first and second external gear sets respectively having thirteenth and fourteenth rotational elements and fifteenth and sixteenth rotational elements; an input shaft coaxially arranged with the first, second, and third planetary gear sets and the thirteenth and fifteenth rotational elements; and an output shaft arranged in parallel with the input shaft and coaxial with the fourth planetary gear set and the fourteenth and sixteenth rotational elements. In particular, the second and eleventh rotational elements are fixedly connected with the input shaft and the output shaft respectively, and the seventh and fifth rotational elements are externally gear-meshed with the tenth and twelfth rotational elements through the first and second external gear sets respectively.
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Citations
20 Claims
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1. A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising:
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a first planetary gear set having first, second, and third rotational elements; a second planetary gear set having fourth, fifth, and sixth rotational elements; a third planetary gear set having seventh, eighth, and ninth rotational elements; a fourth planetary gear set having tenth, eleventh, and twelfth rotational elements; a first external gear set having thirteenth and fourteenth rotational elements; a second external gear set having fifteenth and sixteenth rotational elements; an input shaft coaxially arranged with the first, second, and third planetary gear sets and the thirteenth and fifteenth rotational elements; and an output shaft arranged in parallel with the input shaft and coaxial with the fourth planetary gear set and the fourteenth and sixteenth rotational elements, wherein the second rotational element is fixedly connected with the input shaft, the seventh rotational element is externally gear-meshed with the tenth rotational element through the first external gear set, the fifth rotational element is externally gear-meshed with the twelfth rotational element through the second external gear set, and the eleventh rotational element is fixedly connected with the output shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising:
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a first planetary gear set having first, second, and third rotational elements; a second planetary gear set having fourth, fifth, and sixth rotational elements; a third planetary gear set having seventh, eighth, and ninth rotational elements; a fourth planetary gear set having tenth, eleventh, and twelfth rotational elements; a first external gear set having thirteenth and fourteenth rotational elements; a second external gear set having fifteenth and sixteenth rotational elements; an input shaft coaxially arranged with the first, second, and third planetary gear sets and the thirteenth and fifteenth rotational elements; and an output shaft arranged in parallel with the input shaft and coaxial with the fourth planetary gear set and the fourteenth and sixteenth rotational elements, wherein the first rotational element is fixedly connected with the fourth rotational element, and selectively connected with a transmission housing, the second rotational element is fixedly connected with the input shaft, the fifth rotational element is fixedly connected with the fifteenth rotational element, the sixth rotational element is selectively connected with the transmission housing, the seventh rotational element is fixedly connected with the thirteenth rotational element, and selectively connected with the second rotational element and the third rotational element respectively, the tenth rotational element is fixedly connected with the fourteenth rotational element, the eleventh rotational element is fixedly connected with the output shaft, and the twelfth rotational element is fixedly connected with the sixteenth rotational element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification