to accelerate the attenuation frame and body vibration, to improve vehicle ride comfort (comfort), the suspension system with internal shock absorber in most cars. Automotive shock absorber is also known as the "suspension", is composed of springs and shock absorbers. The shock absorber is not used to support the weight of the body, but is used to suppress the shock and absorb the impact energy of the road when the spring absorbs the shock. Spring to ease the impact of the role of the "big energy impact" into a "small energy impact", and the shock absorber is gradually will be "small energy multiple impact" reduction. If you open the damper has been broken car, you can experience the car through each hole, ups and downs aftereffect ripples bounce, and the shock absorber is used to inhibit this bounce. No damper will be unable to control the rebound spring, the car across the rugged road surface will produce serious bounce, the corner will be because of the spring under the shock caused by the loss of the tire grip and traction.