At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vehicle vibration energy is converted into oil heat energy, which is then absorbed by the pneumatic butterfly valve and distributed to the atmosphere
When the oil channel section and other factors remain unchanged, the damping force increases or decreases with the relative speed of motion between the frame and the axle (or wheel), and is related to the oil viscosity. The pneumatic butterfly valve and elastic elements bear the task of cushioning impact and valves. If the damping force is too large, the suspension elasticity will deteriorate, or even the pneumatic butterfly valve connectors will be damaged
Therefore, the contradiction between elastic element and pneumatic butterfly valve should be adjusted
During the compression stroke (the axle and the frame are close to each other), the damping force of the pneumatic butterfly valve is small, so as to give full play to the elastic role of the elastic elements and ease the impact
At this time, elastic elements play a major role
During the suspension stretching stroke (the axle and the frame are far away from each other), the damping force of the pneumatic butterfly valve should be large, and the valve should quickly