US 12,083,851 B1
Single axle roll control system with multiple circuit-specific pressurizing devices
Miguel Dhaens, Lommel (BE); and Monzer Al Sakka, Sint-Truiden (BE)
Assigned to DRiV Automotive Inc., Northville, MI (US)
Filed by DRiV Automotive Inc., Northville, MI (US)
Filed on May 15, 2023, as Appl. No. 18/197,133.
Int. Cl. B60G 17/015 (2006.01); B60G 17/08 (2006.01); B60G 21/073 (2006.01)
CPC B60G 21/073 (2013.01) [B60G 17/0157 (2013.01); B60G 17/08 (2013.01); B60G 2202/24 (2013.01); B60G 2204/8304 (2013.01); B60G 2500/114 (2013.01); B60G 2800/9124 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A single axle suspension system, comprising:
right and left dampers each including a damper housing, a piston rod, and a piston that is mounted on the piston rod and arranged in sliding engagement inside the damper housing such that the piston divides the damper housing into first and second working chambers;
a first hydraulic circuit connecting the first working chamber of the right damper and the second working chamber of the left damper;
a second hydraulic circuit connecting the second working chamber of the right damper and the first working chamber of the left damper;
a first pressurizing mechanism connected in fluid communication with the first hydraulic circuit; and
a second pressurizing mechanism connected in fluid communication with the second hydraulic circuit,
wherein each of the first and second pressurizing mechanisms includes a variable volume chamber with a driven piston that is moveable in first and second directions to increase and decrease the volume of the variable volume chamber and provide active roll control by adding and removing hydraulic fluid to and from the first and second hydraulic circuits to increase and decrease pressure inside the first and second hydraulic circuits independent of damper movements.