Hydropneumatic suspension for vehicles having greatly varying axle loads
AssigneeFirma Carl Freudenberg
InventorWalter Brandenburger
Life of this patent
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Abstract
In a hydropneumatic suspension for vehicles having greatly varying axle loads, in particular tractors having hydraulic suspension cylinders that are connectable to a pneumatic feed pump via supply lines—with a pressure regulating valve being provided in the supply line leading to the annular spaces of the suspension cylinders—the pressure regulating valve being designed as a proportionally regulated valve which is controlled by a control current from an electric control unit which electronically processes the measured signals of a pressure sensor connected to the piston chambers of the suspension cylinders or links them to additional functional data or to external control signals from the working hydraulics.
Claims5
A hydropneumatic suspension for a vehicle which can handle extreme fluctuations in axle loads, comprising:
- a plurality of hydraulic suspension cylinders that are connectable to a pneumatic feed pump through a supply line, and a pressure regulating valve provided in the supply line leading to an annular space of the suspension cylinders, wherein the pressure regulating valve (65) is a proportionally regulated valve that is controlled by a control current from an electric control unit (18) which electronically processes the measured signals of a pressure sensor (68) which is connected to piston chambers (3, 4) of the suspension cylinders (1, 2).
Dependencies are inferred from the claim text.