What are the types of car shock absorbers

Shock absorbers are divided into five types: hydraulic shock absorbers, inflatable demand reducers, double-tube shock absorbers

Shock absorbers are divided into five types: hydraulic shock absorbers, inflatable demand reducers, double-tube shock absorbers, single-tube shock absorbers, and adjustable resistance shock absorbers.

(1) Hydraulic

Hydraulic shock absorbers are widely used in automobile suspension systems. The principle is that when the frame and the axle reciprocate relative to each other and the piston reciprocates in the cylinder of the shock absorber, the oil in the shock absorber shell repeatedly flows from the inner cavity through some narrow pores. Another cavity. At this time, the friction between the liquid and the inner wall and the internal friction of the liquid molecules form a damping force to the vibration;

(2) Inflatable

Its structural feature is that a floating living cold is installed in the lower part of the cylinder, and a closed air chamber formed by the floating piston and the end of the cylinder is filled with high-pressure hydrogen;

(3) Double-cylinder type

Refers to the shock absorber has two inner and outer cylinders. The piston moves in the inner cylinder. When the dry piston rod enters and draws out, the volume of the oil in the inner cylinder increases and shrinks. Therefore, it is necessary to exchange with the outer cylinder to maintain the inner tube. The balance of oil in the tube. Therefore, there must be four valves in the double-cylinder shock absorber, that is, in addition to the two throttle valves on the piston mentioned above, there are also flow valves and compensation valves installed between the inner and outer cylinders to complete the exchange function;

(4) Single-tube type

Compared with the double-tube type, the single-tube type shock absorber has a simple structure and reduces a set of valve systems. It is equipped with a floating piston in the lower part of the cylinder tube (the so-called floating means that there is no piston rod to control its movement), and a closed air chamber is formed under the floating piston, which is filled with high-pressure atmosphere;

(5) Shock absorber with adjustable resistance

It can change the size of the orifice by external operation. Recent cars use electronically controlled shock absorbers as standard equipment. The driving state is detected by sensors, and the computer calculates the optimal damping force, so that the damping force adjustment mechanism on the shock absorber works automatically.