Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1987-03-30
1988-05-10
Reger, Duane A.
Fluid-pressure and analogous brake systems
Pipeless valves
303 85, 303114, B60T 1718
Patent
active
047430737
ABSTRACT:
A hydraulic system for an automotive vehicle having an auxiliary pressure source and an adjustable suspension device arranged between the vehicle body and the vehicle axle is disclosed. The suspension device includes a working cylinder having a piston chamber and a working piston mounted therein and devices which enable a controlled flow of a pressure medium from one side of the working piston to the other. A separating piston separates the piston chamber from a gas-filled chamber. The suspension device also includes a pressure chamber filled with pressure medium which is separated from the gas-filled chamber by a movable wall and provides for level adjustment of the vehicle body. The pressure chamber of the adjustable suspension device is connectible to the auxiliary pressure source by a pressure line including a changeover valve. The auxiliary pressure source communicates with the wheel brakes of the vehicle by way of a pressure control valve and a pressure modulation valve. Upon failure of the auxiliary pressure source the wheel brakes of the rear wheels can be braked by being connected to the pressure chambers of the adjustable suspension device.
REFERENCES:
patent: 3924902 (1975-12-01), Engle
patent: 4610484 (1986-09-01), Amberg et al.
patent: 4653813 (1987-03-01), Burgdorf
Alfred Teves GmbH
Raden James B.
Reger Duane A.
Seitter Robert P.
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