Comfort is one of the most important performance cars. Comfort is associated with the inherent vibration characteristics of car body, and the natural vibration characteristics of the body and is associated with the characteristics of the suspension. Therefore, the automobile suspension is an important part of a guarantee for comfortableness. At the same time, as a frame of automobile suspended frame (or body) and (or) wheel axle connection between power transmission parts, is an important component of ensure the safety of the car. Automobile suspended frame, therefore, are often listed as one of important parts into the technical specifications for the car, as a measure of car quality indicators.
Chassis frame (or body) if installed directly on the axle (or wheels), because the road is rough, because of the ground shock that goods and people will feel very uncomfortable, this is because does not have the reason of suspension. Automobile suspended frame is a frame (or body) and axle (or wheel) between the elastic coupling device. It is the function of the elastic connecting axle and frame (or body), mitigate the impact of the vehicle by driving. Ensure the goods in good condition and comfortable; Attenuation due to the vibration of elastic system is introduced, to keep the car in the stable position, improve the handling stability; Suspension system at the same time bear the vertical reaction, longitudinal force (traction and braking force) and the lateral force and the force caused by the torque to the frame (or body), in order to make sure the car a smooth; And when the wheels relative frame beat, special in steering wheel movement trajectory to meet certain requirements, so the wheel suspension can be made according to certain trajectory relative to beat the guiding role of car body.