VEHICLE SUSPENSION SYSTEM HAVING A TORSION SPRING ASSEMBLY

摘要

A suspension system (10) for a vehicle (12). A control arm (24) is attachable to the vehicle frame (16) by a first bushing (32) and by a second bushing (36) and is attachable to the knuckle (14) by a ball joint (40). A torsion spring assembly (26) has a torsion tube (42) and a torsion bar (44) positioned within the torsion tube. A first end portion (46) of the torsion bar is attached to a first end portion (48) of the torsion tube, and a second end portion (50) of the torsion bar extends beyond a second end (52) of the torsion tube and is attached to the control arm. No portion of the torsion tube is immobilized with respect to the frame. A moment bar (28) has a first end portion (54) attached to the torsion tube and has a second end portion (56) attachable to the frame.