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    • 4. 发明申请
    • Multiple speed automatic transmission
    • 多速自动变速器
    • US20080113844A1
    • 2008-05-15
    • US11595497
    • 2006-11-09
    • Reid A. Baldwin
    • Reid A. Baldwin
    • F16H3/62
    • F16H3/66F16H2200/0026F16H2200/006F16H2200/0065F16H2200/2012F16H2200/2048F16H2200/2097
    • A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a first brake, a second brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said first brake being operable to hold said fourth rotating member against rotation, and said second brake being operable to hold said second rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a second clutch, a third clutch, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second control clutch being operable to couple said fifth rotating member to the input, said second control clutch being operable to couple said seventh rotating member to the input, said third brake being operable to hold the seventh rotating member against rotation, and said sixth rotating member being secured for rotation to the output.
    • 多速传输包括输入和输出; 第一,第二,第三和第四行星齿轮组,每个齿轮组包括太阳齿轮,齿圈,载体和支撑在载体上并与太阳齿轮和齿圈啮合的小齿轮; 第一行星齿轮传动装置,包括第一齿轮组,第二齿轮组,第一离合器,第一制动器,第二制动器以及第一,第二,第三和第四旋转构件,所述第一离合器可操作以将所述第一旋转构件 所述第一制动器可操作以保持所述第四旋转构件抵抗旋转,并且所述第二制动器可操作以保持所述第二旋转构件抵抗旋转; 以及包括所述第三齿轮组,所述第四齿轮组,第二离合器,第三离合器,第三制动器以及第五,第六,第七和第八转动构件的第二行星齿轮传动装置,所述第三旋转构件固定到所述第八旋转构件 所述第二控制离合器可操作以将所述第五旋转构件联接到所述输入,所述第二控制离合器可操作以将所述第七旋转构件联接到所述输入,所述第三制动器可操作以保持所述第七旋转构件抵抗旋转,并且所述第二旋转构件 第六旋转构件被固定以转动到输出。