Planetary gear train of automatic transmission for vehicles

    公开(公告)号:US09856953B1

    公开(公告)日:2018-01-02

    申请号:US15370400

    申请日:2016-12-06

    Abstract: The present disclosure provides a planetary gear train of an automatic transmission for a vehicle having advantages of improving power transfer performance and fuel efficiency by implementing ten forward speeds and one reverse speed. The planetary gear train includes: first, second, third, and fourth planetary gear sets; an input shaft; an output shaft; eight shafts connected to the respective rotation elements of the first, second, third, and fourth planetary gear sets; four clutches and two brakes which are control elements; and a transmission housing H. With this arrangement, rotation power from an engine which is input from the input shaft is shifted by a mutual complementing operation between the first, second, third, and fourth planetary gear sets, and is then output through the output shaft.

    Planetary gear train of automatic transmission of vehicle

    公开(公告)号:US09856949B2

    公开(公告)日:2018-01-02

    申请号:US14947995

    申请日:2015-11-20

    Abstract: A planetary gear train for an automatic transmission may include input shaft, output shaft, first to fourth planetary gear sets and seven friction elements disposed to selectively connect the rotation elements with the rotation element and selectively connect the rotation elements with a transmission housing, and wherein the input shaft is/are continuously connected to the second rotation element, the output shaft is/are continuously connected to the eleventh rotation element, the third rotation element is/are continuously connected to the fifth rotation element, the third rotation element is/are continuously connected to the tenth rotation element, the fourth rotation element is/are continuously connected to the ninth rotation element, the sixth rotation element is/are continuously connected to the seventh rotation element, the input shaft is/are selectively connected to the sixth rotation element, wherein three friction elements among seven friction elements is/are operated at each speed stage.

    Multi-speed transmission in planetary design

    公开(公告)号:US09850984B2

    公开(公告)日:2017-12-26

    申请号:US14769618

    申请日:2014-01-22

    Abstract: A multi-speed transmission in planetary design for a vehicle includes a housing, a first shaft (1) as a drive (An), and a second shaft (2) provided as an output (Ab) that is arranged in a manner axially parallel to the drive. Three planetary gear sets, additional shafts, along with six shifting elements are also provided, through which the actuation of several gears are realized. Machine elements are provided for the transfer of torque between the drive and the output. The first shaft is connectable to the planetary gear carrier of the second planetary gear set, to the sun gear of the first planetary gear set, to the ring gear of the second planetary gear set, to the planetary gear carrier of the first planetary gear set, and to the first spur gear stage. The second shaft is connected or connectable to the first machine element and to the second machine element.

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