Vibration is produced in suspension system because elastic element is impacted, to improve the driving smoothness of car, the rear suspension is connected in parallel with the elastic element and shock absorber is installed. The shock absorber is the hydraulic shock absorber, its working principle is to absorb vibration of car body, the piston in shock absorber moves upward and downward, the oil in the chamber of shock absorber is pumped by the piston and flows to another chamber. Then control the flow volume related oil flow route according to the structure of valve plate, let it produce difference in pressure, and form attenuation force. The car vibration energy, transformed into heat energy of shock absorber oil, is then absorbed by it.

Production Process of Shock Absorber