1、 Working principle
- Ordinary oil shock absorber
-Ordinary oil shock absorbers mainly rely on the flow of damping oil inside the shock absorber to generate damping force. When the vehicle is driving on bumpy roads, the piston of the shock absorber moves up and down, causing the shock absorber oil to flow through the small holes or valve plates on the piston. During this process, the viscosity of the shock absorber oil generates resistance, thereby reducing the vibration of the vehicle body.
-However, under the condition of high strength and long-term use, shock absorber oil is prone to produce foam and bubbles. These foam and bubbles will reduce the shock absorption effect, because the compressibility of gas is much greater than that of liquid, which will make the shock absorber become “soft” and lose effective support for the body.
- Nitrogen shock absorber
-In addition to shock-absorbing oil, the nitrogen shock absorber is also filled with high-pressure nitrogen gas inside. Nitrogen is enclosed in a chamber of the shock absorber, isolated from the shock absorber oil.
-During the operation of the shock absorber, nitrogen serves as a pressure compensation. When the shock absorber is compressed, nitrogen is compressed, increasing the pressure on the shock absorber oil to prevent the shock absorber oil from producing foam and bubbles. When the shock absorber rebounds, nitrogen gas expands to help the shock absorber oil quickly return to its original position, allowing the shock absorber to quickly restore support to the vehicle body.
2、 Performance Performance
- Heat dissipation performance
-When ordinary oil shock absorbers work continuously, heat is easily accumulated inside the shock absorber due to the friction of the shock absorber oil. Failure to dissipate heat in a timely manner can lead to a decrease in the viscosity of the shock absorber oil, further affecting the shock absorption effect and even potentially causing damage to the shock absorber.
-Nitrogen shock absorbers can help dissipate heat due to the presence of nitrogen gas. Nitrogen creates a relatively stable environment inside the shock absorber, reducing the impact of heat on the shock absorber oil and enabling the shock absorber to maintain stable performance during long-term, high-intensity off-road driving.
- Damping adjustment
-The damping of ordinary oil shock absorbers is generally fixed, or can only be adjusted to a limited extent by replacing shock absorber oil of different hardness or adjusting the piston valve plate. This adjustment method is more complicated and not precise enough.
-Nitrogen shock absorbers usually have more convenient damping adjustment functions. By adjusting the nitrogen pressure and the flow rate of shock absorber oil, the damping of the shock absorber can be more accurately adjusted to adapt to different road conditions and driving styles. For example, on flat roads, damping can be reduced to improve driving comfort; On rugged off-road roads, damping can be increased to enhance support for the vehicle body.
3、 Applicable scenarios
- Ordinary oil shock absorber
-Ordinary oil shock absorbers are suitable for general urban roads and mild off-road conditions. In these scenarios, the impact on the vehicle is relatively small, and ordinary oil shock absorbers can meet basic shock absorption needs at a relatively low cost.
- Nitrogen shock absorber
-Nitrogen shock absorbers are more suitable for high-intensity off-road environments, such as desert crossing, rock climbing, etc. In these extreme road conditions, vehicles need to withstand tremendous impact forces, and nitrogen shock absorbers can provide more stable and reliable shock absorption effects, ensuring vehicle handling and safety.
In summary, there are significant differences between nitrogen shock absorbers and ordinary oil shock absorbers in terms of working principles, performance, and applicable scenarios. Please make appropriate choices based on your actual needs and driving scenarios.