Roll control system for a motor vehicle

摘要

( 57 ) 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.