Introduces a variable telescopic tuning parts damping, illustrates the principle achieve damping change. While the design of the rotary shock absorbers and suspension construct a new suspension system, a simple system analysis.

Comfort is one of the most important performance sedan. Natural vibration characteristics of comfort and body, whereas the natural vibration characteristics of the body but also with the characteristics of the suspension related. Therefore, to ensure the comfort of the vehicle suspension is an important component. Meanwhile, the vehicle suspension as the frame (or body) between the axle (or wheel) and mechanical connections for power transmission, but also to ensure that important parts cars with security. Therefore, as an important vehicle suspension components are often incorporated into the car's technical specification sheet, as one measure of the quality indicators sedan. Currently used cars damping mode, using more of the following categories: a leaf spring + telescopic shock absorber; 2 coil springs + telescopic shock absorber; 2 gas shock absorbers (air bag).. ; 3 spring lever shock absorbers; cars in the 2-30 million range, mostly using the second form, SUVs and CUV, SUV and other models, is used in the form of 2 front axle rear axle 1. As shown for the automotive suspension and damping systems generally structure

The structure is usually also called McPherson structure, the main component is the telescopic shock absorber. Characterized by simple, fast response. And in the geometry of a lower arm and pillars can automatically adjust camber, let maximize ground contact area can adaptively road when cornering, allowing the tire, and a small footprint for small cars and most of the car to use. However, due to the simple structure makes the suspension stiffness of the weak, poor stability, cornering roll obvious. In addition, due to the general European and American car is relatively heavy, the institution of the spring bear the load is relatively large, coupled with domestic road condition is not so good, Goukan road more big impact down the body very frequently appear in the driving process in, which resulted in metal fatigue coil spring, after the car running for some time (depending on road conditions frequently travel, the length of time varies, while the load of the vehicle also has a great relationship), spring return power weakened; then have decreased body height, underpinning, tires easily and phenomena such as fender rubs so happen. Spring return power weakened, softened, but also cause a serious problem, that is, damage to Nissan S13 Coilovers, as we all know, in the case of heavy-duty shock absorbers have a limit condition, which is the core pressure shock absorber to the limit of travel, such conditions would be the damper leak, damage seals, resulting in shortening the life of the shock absorber, in the case of the spring becomes soft, the life of the shock absorber will be seriously affected.
Others such as inflatable sex dampers, variable damping shock absorbers require relatively expensive seals, institutional complexity, use only on high-performance cars.