Spring in automobile suspension system plays a support body and absorb the uneven road conditions and other force caused by the impact force of tire and other here include the acceleration and deceleration,braking, turning on the spring force. It is more important in the process of absorption of vibration to ensure that the wheels do not leave the road, to ensure the tracking of the car, to ensure there is enough grip and good handling. This determines the position of the spring in automobile parts!

The main function of the spring is to maintain the car comfort and keep the tires complete contact with the ground, with the wrong spring will cause have negatively affected the quality and control of traffic. If the springis stiff, the suspension system can not play a role. Encountered when the uneven road car tires will jump,completely off the ground, if this situation occurred in the acceleration, brake or turn, the car will lose track of. If the spring is very soft, very easy to appear the "bottom" of the situation, there will be suspension travelexhausted. If in turn occurs when the bottom is considered as elastic coefficient of spring into the infinite (nocompression of space), the body will have an immediate transfer of weight, cause the loss of tracking. Stroke ifthe car has a very long, it may be able to avoid the occurrence of the "bottom", but the body will become veryhigh, and very high body means a high center of gravity of the body, the body center of gravity height has a decisive influence on the control performance, so is the shock absorber will lead to the obstacle ofmanipulation. If the road is flat, it is not necessary to spring and suspension system. If the pavement roughnessis larger then you need to ensure that the spring soft contact of tire and pavement surface, at the same time,spring travel must increase. Select the spring hardness is to be made by the degree of rugged road to decide,more rugged to the soft spring