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    • 10. 发明申请
    • MULTI-SPEED TRANSMISSION
    • 多速传输
    • US20120178579A1
    • 2012-07-12
    • US12987799
    • 2011-01-10
    • James M. HartAndrew W. PhillipsEdward W. MelletScott H. Wittkopp
    • James M. HartAndrew W. PhillipsEdward W. MelletScott H. Wittkopp
    • F16H57/10F16H3/44
    • F16H3/66F16H2003/442F16H2200/0065F16H2200/2012F16H2200/2046
    • The present invention provides a multiple speed automatic transmission having an input member, an output member and four planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The transmission also includes four friction brakes and two friction clutches. The transmission further includes a plurality of fixed or rigid connections. A first connection couples the ring gear of the first planetary gear assembly to the sun gear of the second planetary gear assembly. A second connection couples the planet gear carrier of the first planetary gear assembly to the planet gear carrier of the second planetary gear assembly. A third connection couples the ring gear of the third planetary gear assembly to the sun gear of the fourth planetary gear assembly. A fourth connection couples the planet gear carrier of the third planetary gear assembly to the planet gear carrier of the fourth planetary gear assembly. A fifth connection couples the ring gear of the second planetary gear assembly to the sun gear of the third planetary gear assembly.
    • 本发明提供一种多速自动变速器,其具有输入构件,输出构件和四个行星齿轮组件,每个行星齿轮组件包括太阳轮,具有多个行星齿轮的行星齿轮架和环形齿轮。 变速器还包括四个摩擦制动器和两个摩擦离合器。 变速器还包括多个固定或刚性连接。 第一连接将第一行星齿轮组件的齿圈与第二行星齿轮组件的太阳齿轮连接。 第二连接将第一行星齿轮组件的行星齿轮架联接到第二行星齿轮组件的行星齿轮架。 第三连接将第三行星齿轮组件的齿圈与第四行星齿轮组件的太阳齿轮连接。 第四连接将第三行星齿轮组件的行星齿轮架联接到第四行星齿轮组件的行星齿轮架。 第五连接将第二行星齿轮组件的齿圈与第三行星齿轮组件的太阳齿轮连接。