Vehicular automatic transmission having five forward speed range

Details Vehicular automatic transmission having five forward speed range Vehicular automatic transmission having five forward speed range

1996-11-18

1998-11-03

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475278, 475285, F16H 362

Patent

active

058301003

ABSTRACT:
An automatic transmission having five forward speed ranges and a single reverse speed range wherein a fluid torque converter connected to a crankshaft of an engine increases the rotary torque of the engine and transferring the increased rotary torque to a planetary gear unit installed next to the fluid torque converter. The planetary gear unit includes: a first, a second and a third planetary gear set; and changes the rotary torque, rotary speed, and rotational direction of the power transferred from the fluid torque converter. Friction elements connect and lock the planetary gear sets to the driven shafts, and are controlled with a hydraulic control system. The hydraulic control system controls the fluid path by a shift lever, according to the speed and load of the vehicle.

REFERENCES:
patent: 4884471 (1989-12-01), Daggett et al.
patent: 4939955 (1990-07-01), Sugano
patent: 5213552 (1993-05-01), Ito
patent: 5261862 (1993-11-01), Pierce
patent: 5439088 (1995-08-01), Michioka et al.

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