Hydraulic shift system for a transfer case

Details Hydraulic shift system for a transfer case Hydraulic shift system for a transfer case

1998-03-10

1999-06-29

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

F16H 5904

Patent

active

059160519

ABSTRACT:
A hydraulic shift system for a four-wheel drive transfer case is disclosed. The hydraulic shift system includes a pump, a pressure regulator, an accumulator, a control valve, a range shift assembly, a mode shift assembly, and a shift actuator. The pump supplies hydraulic pressure to the accumulator which is in communication with the control valve. The shift actuator controls the delivery of hydraulic pressure from the control valve to the range shift assembly and the mode shift assembly in response to actuation by the vehicle operator of a mode select mechanism.

REFERENCES:
patent: 4770280 (1988-09-01), Frost
patent: 5076112 (1991-12-01), Williams
patent: 5159847 (1992-11-01), Williams et al.
patent: 5346442 (1994-09-01), Eastman
patent: 5377800 (1995-01-01), Sperduti et al.

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