What is a shock absorber

Shock absorber, shock absorber is mainly used to suppress the spring shock after the rebound of the shock and from the road impact.
After uneven road surface, although the shock absorbing spring can filter the vibration of the road surface, but the spring itself will also have reciprocating motion, and the shock absorber is used to suppress the spring jump.
Suspension system because of the elastic element in the impact vibration, to improve automobile riding comfort, installed in parallel with the elastic element in the suspension shock absorber, for attenuation vibration of the automobile suspension system of the shock absorber is hydraulic shock absorber, its working principle is that when the frame (or body) and the vibration appears when the relative motion between axle, shock absorber piston to move up and down,
The oil in the shock absorber chamber flows repeatedly from one chamber through different pores into another.
At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form damping force on the vibration, so that the vibration energy of the car is transformed into the oil heat energy, and then absorbed and distributed into the atmosphere by the shock absorber.
When the cross section of the oil channel and other factors remain unchanged, the damping force increases or decreases the relative velocity between the frame and the axle (or the wheel), and is related to the oil viscosity.