The automobile is generally composed of four parts: transmission train, driving system, steering system and brake system, of which the driving system includes frame, wheels, and suspension and other components. From this, we can see the role of suspension, which belongs to the elastic connection from the ground to the frame, to achieve wheel control, and at the same time filter the ground vibration transmitted to the body, improving the handling and comfort of the car. You can compare it to a bicycle, the rigid connection between the wheel and the frame, the vibration transmitted by the ground is only the tire filter, and the feeling of the butt can be imagined.

The function of the shock absorber this time is to increase the energy consumption during each expansion and contraction of the spring, convert potential energy into heat energy and release it into the environment, and finally achieve the effect of rapid attenuation.

Usually we call the shock absorber body a black box part, because the design of the shock absorber first meets the customer's interface size and other requirements, and for the internal valve system parts are selected by the supplier independently, to meet the on-site tuning needs, the internal valve system is also the core technology of the shock absorber manufacturer, most of the joint ventures belong to the state of technical application, and do not participate in the design and development.

The structure and working principle of the shock absorber are as follows: there are four check valves inside the shock absorber, and the stretching process opens on the upper right and lower left, and the rest closes. oil flows in from the upper and outer chambers; The compression process opens up left and right down, and the oil flows into the upper cavity and outer cylinder. The change in the amount of oil in the outer cylinder is the volume of the piston rod entering the shock absorber wall, so that the kinetic energy is converted into potential energy and released through self-friction and valve body friction during the repeated flow of oil.