Experimental and Numerical Investigation of Dynamic Interconnected Anti-roll Suspension System in Automobile Application

Abstract

This research work extends on vehicles with dynamic interconnected anti-roll suspension (DIAS) systems. A hydraulic anti-roll system for a vehicle includes a hydraulic actuator, an anti-roll control module, and an anti-roll bypass valve. The first hydraulic actuator is adapted to be connected between the suspension and frame of the vehicle on the one side and the second hydraulic actuators adapted to be connected between the suspension and frame of the vehicle on its other side. The anti-roll control module stiffens the compress the first hydraulic actuator relative to the expansion take in the second hydraulic actuator and stiffens the compress the second hydraulic actuator relative to the expansion take in first hydraulic actuator. The anti-roll bypass valve is adapted to operate the stiffening of the anti-roll control module. Anti-roll bar as part of a vehicle suspension system is a high standard configuration widely used in vehicles to arrange the essential roll stiffness to enhance vehicle handling and safety during fast cornering. However, the defect of the anti-roll bar is apparent that they restraint the wheels travel on the uneven road surface and weaken the wheel/ground holding ability, particularly in articulation mode. Roll-plane hydraulically interconnected suspension (HIS) system, as a potential replacement of anti-roll bar, could effectively increase vehicle roll stiffness without compromising vehicle’s flexibility in articulation mode.