Patent ID: 8096568
Filing Date: 2012-01-17
Classification: B60G

Abstract:
1. A hydropneumatic axle suspension for vehicles, comprising: at least one suspension cylinder having a piston side and a ring side inside a housing thereof; a piston hydraulic accumulator connected in fluid communication with said piston side; a ring hydraulic accumulator connected in fluid communication with said ring side; a piston valve unit and a ring valve unit connected to and controlling fluid flow to said piston side and said piston hydraulic accumulator and to said ring side and said ring hydraulic accumulator, respectively, each of said valve units having an input side and an output side, said output side of said piston valve unit being connected in fluid communication to said piston side, said input side of said ring valve unit being connected in fluid communication by a connection line to said input side of said piston valve unit; control electronics connected to and triggering said piston valve unit and said ring valve unit; a ring pressure sensor, being connected in fluid communication to said ring side and electrically to said control electronics transmitting measured pressure values of said ring side to said control electronics, and being connected to said output side of ring valve unit; and a load sensing line opening into said connection line.