Importance

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Abstract

A roll control system (1) for a vehicle suspension system, the vehicle having at least one pair of lately spaced front wheel assemblies (2) and at least one pair of laterally spaced rear wheel assemblies (3), each wheel assembly (2, 3) including a wheel (4) and a wheel mounting (5) permitting wheel movement in a generally vertical direction relative to vehicle body, and vehicle support means (17a, 17b) for providing at least substantially a major portion of the support for the vehicle; the roll control system (1) including: wheel cylinders (8) respectively locatable between each wheel mounting (5) and the vehicle body, each wheel cylinder (8) including an inner volume separated into first (51) and second (52) chambers by a piston (53) supported within; first and second fluid circuits (7) respectively providing fluid connection between the wheel cylinders (8) by fluid conduits (9, 10, 11), each said fluid circuit providing fluid communication between the said first chambers (51) on one side of the vehicle and the said second chambers (52) on the opposite side of the vehicle to thereby provide roll support decoupled from a warp mode of the vehicle suspension system by providing a roll stiffness about a level roll attitude while simultaneously providing substantially zero warp stiffness; and a fluid control means (26) connected to said first and second fluid circuits (7) for supplying or drawing fluid from each said fluid circuit (7) as a function of the ride characteristics of the vehicle.

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First Claim