| 摘要 |
PURPOSE: An A-bush position control system of a suspension is provided to control the position of an A-bush actively through rotation, linear motion and translation with mounting a connector and a rotator between a lower control arm and a sub frame, and to improve traveling stability and sensitivity of the suspension by increasing the rigidity at high speed and coping with impact harshness at low speed. CONSTITUTION: The A-bush position control system comprises a screw guide(17) turned and installed in a sub frame; an A-bush(19) formed in the outer periphery of the screw guide with linearly moving along the screw guide; a connector(21) connected to the A-bush and turned around a bush pin; and a rotator(23) connected to a guide hole of the connector by a guide pin and pivotally connected to a lower control arm by an arm pin. The A-bush is moved forward with driving the screw guide within the range of 100-140 KPH, and moved backward by reversing the screw guide at low speed below 100 KMP to cope with impact harshness. Traveling stability is improved by actively controlling natural frequency of the wheel of the vehicle.
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