Fluid pressure control system for a hydraulic transmission with

192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch

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74733, F16D 3700, F16H 4700

Patent

active

040519325

ABSTRACT:
A fluid pressure control system for a hydraulic transmission with a lock-up clutch including a lock-up clutch control valve which selectively supplies oil pressure for actuating the lock-up clutch. The lock-up clutch control valve being controlled by selective application of one of a plurality of servo fluid pressures for operating friction engaging means of a gear transmission, said selection of the servo fluid pressures being effected by a change-over valve composite in a changing-over manner.

REFERENCES:
patent: 3058373 (1962-10-01), Snoy
patent: 3241399 (1966-03-01), Fisher
patent: 3255642 (1966-06-01), Christenson
patent: 3524523 (1970-08-01), Klimex
patent: 3857302 (1974-12-01), Morris

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