MULTISTAGE TRANSMISSION OF NINE GEARS FOR FORWARD DRIVE AND ONE GEAR FOR BACKWARD DRIVE

PROBLEM TO BE SOLVED: To compactly dispose a multistage automatic transmission of nine gears for forward drive and one gear for backward drive comprised of a main transmission and pre-transmission using two planetary gear trains.SOLUTION: The multistage transmission of nine gears for forward drive a...

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1. Verfasser: OKUBO MASAHIRO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To compactly dispose a multistage automatic transmission of nine gears for forward drive and one gear for backward drive comprised of a main transmission and pre-transmission using two planetary gear trains.SOLUTION: The multistage transmission of nine gears for forward drive and one gear for backward drive comprises: a planetary gear train including first, second, third and fourth components to be a main transmission, a planetary gear train including components A, B, C and D to be a pre-transmission, and six clutch and brake fastening elements. In the multistage transmission, rotations of an input shaft can be inputted to at least the component A, the components D and B can be braked by first and second brakes B1 and B2, the component C and the first component are connected by a connecting shaft 17, and rotations of two of the first, second and fourth components are regulated by the six fastening elements and outputted to the third component.