US 12,251,978 B2
Single axle roll control system that includes a dual chamber ball-screw mechanism
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. 18/197,138.
Prior Publication US 2024/0383306 A1, Nov. 21, 2024
Int. Cl. B60G 21/073 (2006.01); B60G 9/02 (2006.01); B60G 13/08 (2006.01); B60G 17/08 (2006.01); F15B 21/00 (2006.01); B60G 17/015 (2006.01); B60G 17/016 (2006.01)
CPC B60G 21/073 (2013.01) [B60G 9/02 (2013.01); B60G 13/08 (2013.01); B60G 17/08 (2013.01); F15B 21/005 (2013.01); B60G 17/0152 (2013.01); B60G 17/0162 (2013.01); B60G 2202/24 (2013.01); B60G 2204/62 (2013.01); B60G 2204/82 (2013.01); B60G 2204/8304 (2013.01); B60G 2206/41 (2013.01); B60G 2500/104 (2013.01); B60G 2600/182 (2013.01); B60G 2800/012 (2013.01); B60G 2800/9122 (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; and
a first pressurizing mechanism including a first variable volume chamber that is arranged in fluid communication with the first hydraulic circuit, a second variable volume chamber that is arranged in fluid communication with the second hydraulic circuit, and a ball/screw mechanism that is arranged to increase and decrease a volumetric capacity of each of the first and second variable volume chambers and generate a pressure differential between the first and second hydraulic circuits independent of damper movements to adjust a roll resistance of the single axle suspension system.