Control circuit for fluid coupling with high-gear clutch

Details Control circuit for fluid coupling with high-gear clutch Control circuit for fluid coupling with high-gear clutch

1987-02-26

1989-05-09

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 329, F16H 4502

Patent

active

048280844

ABSTRACT:
A control circuit for a fluid coupling device with a high-gear clutch. The fluid coupling device includes a power chamber into which a working fluid is introduced for performing a transmission action, a clutch member arranged for connecting and disconnecting the input and output elements, a working chamber formed separately of the power chamber and a piston member forcibly displaced by a pressure differential between the working chamber and the power chamber for engaging or disengaging the clutch member. A fluid pressure source supplies working fluid to the interior of the power chamber and a high-gear clutch control valve supplies fluid to and discharges fluid from the working chamber for controlling the engagement and disengagement of the clutch. A control device, responsive to the supply and discharge of the working fluid to and from the working chamber by the high-gear clutch control unit, reduces a pressure internally of the power chamber to a hydraulic pressure proportionally to a throttle pressure from a throttle valve.

REFERENCES:
patent: 2736412 (1956-02-01), Livezy
patent: 2834632 (1958-09-01), Lucia et al.
patent: 3241399 (1966-03-01), Fisher et al.
patent: 3252352 (1966-05-01), General et al.
patent: 4271939 (1981-06-01), Iwanaga et al.

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