Hydraulic control systems for transmissions

Details Hydraulic control systems for transmissions Hydraulic control systems for transmissions

1991-05-09

1992-04-07

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

74335, 192 8718, B60K 4122, F16D 2511

Patent

active

051019426

ABSTRACT:
In the embodiments described in the specification, a hydraulic control system for supplying pressure to a plurality of servo motors associated with shift elements of the several speeds of a transmission includes a slide valve having three positions arranged so that, in each position, two of the servo motors at a time are connectable alternatively with two separate pressure medium delivery lines. Valves are provided in the pressure medium delivery lines for alternate connection of the lines to a central pressure medium supply line.

REFERENCES:
patent: 4452101 (1984-06-01), Fujioka
patent: 4560045 (1985-12-01), Walsh
patent: 4637269 (1987-01-01), Hasegawa et al.
patent: 4848530 (1989-07-01), Chess

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