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What are the differences between air springs and steel springs?

2020-12-02 13:55:36
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With the development of the times, people’s pursuit of comfort in cars has become higher and higher. Many car owners have replaced the steel springs that come with the car body with air springs for comfort. What are the contrasts between air springs and steel springs? Well, let us take a look today.

compressed spring

1. Comfort

Due to changes in the sprung mass of the leaf spring suspension, the natural frequency of the vehicle system changes greatly, resulting in a deviation in overall comfort. Air springs have obvious effects on vibration and shock due to their typical nonlinear stiffness. Experimental data shows that in the same state, compared with the use of leaf spring suspension vehicles, the use of air spring suspension system of vehicles reduced by one-third to half. Under the action of the height valve, the air spring suspension system can ensure that the vehicle height is basically constant even if the vehicle changes under load, and the deviation frequency changes relatively small, thereby ensuring comfort under full load. Air springs can meet different loading and unloading requirements and improve the trafficability of vehicles. It can be seen that the comfort of the air spring suspension is about 30% higher than that of the leaf spring suspension.


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2. Economy

As far as the life is concerned, when the tire travels 50,000 kilometers, the truck with leaf springs is usually replaced. If the air spring is replaced, the tire is usually replaced after 100,000 kilometers, which can extend the service life of the tire by more than 50%.

The use of air spring suspension system can improve the reliability of the vehicle, reduce the failure rate of the vehicle electrical system, reduce the maintenance cost of the vehicle, extend the service life of the vehicle, reduce the impact on the road surface of the vehicle, and reduce the maintenance cost of the road. It can be seen that the economy of air spring suspension is 20% higher than that of leaf spring suspension.

Three, security

For multi-axle vehicles, the air suspension ensures uniform load between the axles, which avoids the full load of a single bearing in the leaf spring suspension. For single axles, the air suspension basically ensures that the force on the wheels on both sides of the vehicle is evenly distributed. The air spring suspension allows the tires to maintain pure rolling contact with the ground, which basically achieves a braking effect. It can be seen that the air spring suspension is safer than the leaf spring suspension.


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