Integrated suspension system for vehicle

An integrated suspension system for a vehicle, comprising:

• a cylinder with gas hermetically contained therein;
• a piston with a motor at an upper portion thereof, the piston configured to support a road wheel and being guided within the cylinder to move vertically;
• a disk unit comprising first and second disks, wherein the second disk has a plurality of second passage holes formed therethrough and a bottom surface coupled to a driving shaft of the motor to rotate while moving vertically integrally with the piston, and the first disk having a plurality of first passage holes, the first disk being stacked on and hingedly connected to the center of a top surface of the second disk to move vertically within the cylinder, and integrally with the second disk, wherein the first disk moves without rotation relative to the cylinder, and wherein the driving shaft of the motor is connected to a center of the second disk;
• and
• a control unit that controls an opening degree established through overlap of the passage holes in the first and second disks by changing power supplied to the motor to control a rotational angle of the second disk.