Hydraulic control system for automatic transmission

Details Hydraulic control system for automatic transmission Hydraulic control system for automatic transmission

1993-05-26

1995-05-02

Look, Edward K.

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

475128, F16H 560

Patent

active

054114462

ABSTRACT:
A hydraulic control system for an automatic transmission comprises a plurality of shift valves which connect a first hydraulic passage communicating with an N+2 speed apply chamber to a second hydraulic passage communicating with an N+1 speed release chamber upon N speed, where N is a whole number equal to or greater than 1.

REFERENCES:
patent: 2890603 (1959-06-01), Harris et al.
patent: 3938410 (1976-02-01), Dach et al.
patent: 4262554 (1981-04-01), Ahlen et al.
patent: 4395927 (1983-08-01), Muller et al.
patent: 4555964 (1985-12-01), Sugano
patent: 4724726 (1988-02-01), Knecht
patent: 5334114 (1994-08-01), Ando et al.

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