Shock absorber overview


The top of the shock absorber is fixed on the body or f […]

The top of the shock absorber is fixed on the body or frame, and the bottom is fixed on the suspension link or axle. Both fixing points should be as strong as possible so that the shock absorber can also function at a more sensitive level. When the wheel rebounds and compresses, there will usually be a rebound phase and a compression phase. In both cases, the vibration is suppressed.

In vehicles, shock absorbers can reduce the impact of driving on rough roads, thereby improving ride quality and vehicle handling. Although the role of shock absorbers is to limit excessive movement of the suspension, their sole purpose is to dampen spring oscillations. The shock absorber uses a gas valve to absorb the excess energy of the spring. The spring rate is selected by the manufacturer according to the loading and unloading weight of the vehicle. Some people use shock to modify the spring stiffness, but this is not the correct usage. With the hysteresis of the tires themselves, they inhibit the up and down of energy stored in unsprung weight movement. Effective wheel bounce damping may require adjusting the impact to the best resistance.

Spring-based shock absorbers usually use coil springs or leaf springs, although torsion bars are also used for torsional shocks. However, the ideal spring itself is not a shock absorber, because the spring only stores and does not dissipate or absorb energy. Vehicles usually use hydraulic shock absorbers and springs or torsion bars. In this combination, "shock absorber" specifically refers to a hydraulic piston that absorbs and dissipates vibration. Currently, two-wheeled vehicles mainly use composite material suspension systems, and four-wheeled vehicles also use composite material leaf springs.