Central hydraulic installation for a motor vehicle

摘要

The invention proceeds from a central hydraulic installation for driving a generator and a fan wheel of a motor vehicle. A known installation of this type comprises a hydraulic pump whose displacement can be adjusted by a delivery flow controller and two hydraulic loads which can be supplied by the hydraulic pump with pressure medium, the first of which loads is provided for driving the generator and the second for driving the fan wheel. The central hydraulic installation requires a low control outlay and can be produced inexpensively, if an adjustable throttle valve is arranged in parallel with the second hydraulic load, the first hydraulic load and the second hydraulic load and the throttle valve are connected one after another and if a fixed metering aperture is arranged between the hydraulic pump and the two hydraulic loads, and the delivery flow controller can be actuated hydraulically and in the counteracting sense by applying to it the pressures before and after the metering aperture.