Abstract: A hydro bushing can include a first liquid chamber configured to be filled with a fluid, a second liquid chamber configured to be filled with the fluid, and located opposite the first liquid chamber, a first fluid line configured to be opened or blocked so as to allow or prohibit movement of the fluid between the first liquid chamber and the second liquid chamber, a second fluid line configured so that the fluid can move between the first liquid chamber and the second liquid chamber based on the first fluid line being blocked, and an adjustment portion disposed on the first fluid line and configured to operate for opening or blocking the first fluid line such that the hydro bushing is configured to be amplitude-sensitive and implement a damping ratio depending on a magnitude of an input load applied to the hydro bushing.

Abstract: A Coupled Torsion Beam Axle (CTBA) bush may include an axial stiffness control portion which forms a cross section of a bush pipe 3 in a cross-sectional structure of additionally securing a gap, the bush pipe generating a rotation against an external load so that lateral stiffness performance and lateral steer performance are enhanced together; and a front and rear stiffness control portion which forms a bush mass in an X-shaped asymmetric bridge structure, the bush mass forming the bush pipe as an external diameter and forming a bush core as an internal diameter so that handling performance and ride comfort performance are enhanced together.

Abstract: A Coupled Torsion Beam Axle (CTBA) bush may include an axial stiffness control portion which forms a cross section of a bush pipe 3 in a cross-sectional structure of additionally securing a gap, the bush pipe generating a rotation against an external load so that lateral stiffness performance and lateral steer performance are enhanced together; and a front and rear stiffness control portion which forms a bush mass in an X-shaped asymmetric bridge structure, the bush mass forming the bush pipe as an external diameter and forming a bush core as an internal diameter so that handling performance and ride comfort performance are enhanced together.