Image Number 2 for United States Patent #5839749.
A caster angle control system for vehicles includes a vehicle speed sensor (VSS) for sensing the current vehicle speed; an electronic control unit (ECU), which receives signals from the VSS to determine the current vehicle speed; a strut assembly having a lower end fixed pivotally on a knuckle arm and an upper end fixed to a vehicle body, the strut assembly being arranged to define a caster angle; and a caster control device for controlling the caster angle through allowing the strut assembly to pivot forward and backward in a longitudinal direction of the vehicle centering the lower end of the strut assembly by control of the ECU, which receives the signals from the VSS to determine the current vehicle speed. The caster angle control system for vehicles provides the caster angle control device including an actuator, which is operated in response to the control of the ECU and allows a cam to rotate thereby; a cam, which is rotated by the operation of the actuator; and a reciprocating movement member, which is moved forward and backward by the rotation movement of the cam, allowing the upper end of the strut assembly to be moved forward and backward in a longitudinal direction of the vehicle centering on the lower end of the strut assembly.
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