Automatic transmission for a vehicle

Details Automatic transmission for a vehicle Automatic transmission for a vehicle

1999-06-04

2000-10-24

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475285, 74606R, F16H 362

Patent

active

061359122

ABSTRACT:
An automatic transmission, which establishes automatic shifts in a multiple gear stages by selectively inputting a plurality of input rotations to a planetary gear set, includes first and third clutches connected through a reduction planetary gear to an input shaft and transmits a decelerated rotation to the planetary gear set and a second clutch directly connected to the input shaft and transmits a non-decelerated rotation to the planetary gear set. The reduction planetary gear is arranged on the end of a boss portion of a transmission case wall and the one element is fixed to the end of the boss portion, hydraulic servos of the first and third clutches are arranged on the boss portion, a hydraulic servo of a second clutch is arranged in the other side of the reduction planetary gear from the hydraulic servos, and the hydraulic paths for the hydraulic servos are formed in the boss portion.

REFERENCES:
patent: 4347765 (1982-09-01), Leonard et al.
patent: 5106352 (1992-04-01), Lepelletier
patent: 5495778 (1996-03-01), Mochizuki

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