Volume flow control for hydraulic systems of vehicles, especiall

Details Volume flow control for hydraulic systems of vehicles, especiall Volume flow control for hydraulic systems of vehicles, especiall

1993-11-10

1995-03-21

Lopez, F. Daniel

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

60422, 137118, F15B 1116

Patent

active

053985940

ABSTRACT:
A volume flow control for a hydraulic system of a vehicle has a pump for supplying a main consuming device and an auxiliary consuming device with a hydraulic medium. A valve having a main connection for connecting the pump to the main consuming device an auxiliary connection for connecting the pump to the auxiliary consuming device and is provided. The valve has a main piston with a throttle and an auxiliary piston positioned downstream of the throttle. The throttle is positioned within the auxiliary connection. The auxiliary connection is pressurized by the main piston. The auxiliary piston has a first end face, subjected to the operational pressure of the hydraulic medium, and a second end face, biased by at least one pressure spring and subjected to a reduced pressure of the hydraulic medium caused by the throttle. With this arrangement, the auxiliary piston is positioned such that, independent of the operational pressure, a substantially constant amount of hydraulic medium is supplied to the auxiliary consuming device when switched on.

REFERENCES:
patent: 4232701 (1980-11-01), Adachi

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