Change-speed control construction

Details Change-speed control construction Change-speed control construction

1989-10-18

1991-05-07

Braun, Leslie A.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 008, F16D 2514

Patent

active

050129090

ABSTRACT:
A vehicle change-speed control construction for selectively engaging and disengaging a hydraulic clutch of a propelling transmission system according to a change-speed operation. Through maximum simplification and rationalization, the construction has a hydraulic control system comprised of minimized number of components consisting essentially of one pilot pressure controlled selector valve and a plurality of check valves operable in response to a change-speed operation. The improved construction is extremely simple and economical, yet achieves higher operational efficiency without transmission delay.

REFERENCES:
patent: 2575277 (1951-11-01), Johnson
patent: 2955691 (1960-10-01), Brueder
patent: 3137311 (1964-06-01), Rohweder et al.
patent: 3386543 (1968-06-01), Osburn
patent: 3459285 (1969-08-01), Camburn et al.
patent: 4719812 (1988-01-01), Machida et al.
patent: 4724727 (1988-02-01), Shibayama et al.

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