US 12,246,571 B2
Valve arrangement of an air suspension system of a vehicle and method for controlling such an air suspension system
Helge Westerkamp, Hannover (DE)
Assigned to ZF CV Systems Europe BV, Brussels (BE)
Filed by ZF CV Systems Europe BV, Brussels (BE)
Filed on Nov. 6, 2023, as Appl. No. 18/502,819.
Claims priority of application No. 10 2022 132 484.2 (DE), filed on Dec. 7, 2022.
Prior Publication US 2024/0190199 A1, Jun. 13, 2024
Int. Cl. B60G 17/052 (2006.01)
CPC B60G 17/0528 (2013.01) [B60G 2202/152 (2013.01); B60G 2202/412 (2013.01); B60G 2202/42 (2013.01); B60G 2400/252 (2013.01); B60G 2400/50 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A valve arrangement of an air suspension system of a vehicle having vehicle axles, the valve arrangement comprising:
a pressure generator having a two-stage compressor, an air dryer, a switchover valve for switching between a delivery operation and a regeneration operation;
said compressor being configured to be driven by an electric motor;
said pressure generator further having a working connection and an environment connection;
a first main working line connected to said working connection of said pressure generator and branching into at least two first axle working lines;
two bellows lines per vehicle axle, which each branch off from one of the at least two first axle working lines and lead via a first shutoff valve to an associated air bellows of a corresponding vehicle axle;
said pressure generator having a second working connection connected to a delivery line of said pressure generator between two compressor stages of said compressor;
a second main working line connected to said second working connection of said pressure generator;
a second shutoff valve arranged in said second main working line;
said second main working line branching into at least two second axle working lines downstream of said second shutoff valve;
each of said at least two second axle working lines being connected to one of at least two branching points of said at least two first axle working lines at the vehicle axles via a corresponding third shutoff valve;
each of said at least two first axle working lines having a fourth shutoff valve arranged therein; and,
said second shutoff valve, said third shutoff valves, and said fourth shutoff valves being 2/2-way magnetic switching valves configured to be closed when in a non-energized state.