A unique MRF by-pass damper for heavy vehicle controllable suspension systems is designed, manufactured and tested. The damper can generate nearly 8000 N which meets the maximum force requirement for preventing the heavy vehicle rollover under certain crucial circumstance. A dynamic simulation of the roll over performance of a heavy vehicle incorporated with four MR dampers is carried out using vehicle dynamic software. Emergency maneuver and roll over scenario are simulated. The results show that the controllable MRF dampers could achieve better performance for protection from the vehicle rollover, which the roll angle can be reduced by 45percent compared to the regular OEM dampers.
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