Multiple-speed automatic transmission for an automotive vehicle

Details Multiple-speed automatic transmission for an automotive vehicle Multiple-speed automatic transmission for an automotive vehicle

1996-04-29

1998-05-26

Ta, Khoi Q.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475279, 475286, F16H 5710, F16H 132

Patent

active

057556369

ABSTRACT:
A kinematic arrangement of an automatic transmission includes three simple planetary gear units having certain elements fixed to other elements mutually, a one-way coupling for holding the ring gear of the first gear unit against rotation, brakes for holding the carrier of the third gear unit and the sun gears of the second and third gear units against rotation on the transmission housing, two friction clutches arranged in parallel between the input shaft and the sun gears of the second and third planetary gear units, a brake band for holding the ring gear of the third gear unit and carrier of the second gear unit against rotation, and a friction clutch for holding the sun gear of the first gear unit against rotation.

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