A ROLL CONTROL SYSTEM FOR A MOTOR VEHICLE

摘要

A roll control system (20) for installation between axially aligned wheels of a motor vehicle, the roll control system comprising a torsion bar (22); a damper (24) attached to one end (28) of the torsion bar and attachable to one of the wheels; and attachment means (25) attached to the other end (29) of the torsion bar and attachable to the other wheel; wherein the damper comprises an axially extending cylindrical housing (52); a piston (34) slidably mounted inside the housing; a piston rod (58) connected to the piston, extending out of one end (55) of the housing, and movable in an axial direction relative to the housing; a floating piston (35) slidably mounted in the housing between the piston and the other end of the housing; a compensation chamber (37) between the floating piston and the other end (54) of the housing containing a first pressurised fluid; a compression chamber (30) between the floating piston and the piston containing a second pressurised fluid; a rebound chamber (32) between the piston and the one end of the housing containing the second pressurised fluid; valve means (36) on the piston allowing restricted flow of the second pressurised fluid between the compression chamber and the rebound chamber; a rebound stop (60) positioned in the rebound chamber between the piston and the one end of the housing and providing a spring-effect on the movement of the piston towards the one end of the housing; and a compression stop (62) providing a spring-effect on the movement of the piston towards the floating piston. Provides an improved passive roll controle system.