人类的福音-空气弹簧使车子保持平稳舒适The gospel of mankind - air spring keeps the car stable and comfortable

随着科学技术的进步，人们生活质量的提高，同时道路路面质量也在不断的提高，车辆的速度越来越快。因此，对车辆舒适性的要求自然会提高，弹簧开始慢慢离开乘用车和小型车辆的领域； 另一个金属弹簧开始慢慢攀升至主导位置-螺旋弹簧。  

With the progREss of science and technology, the improvement of people's quality of life, at the same time, the quality of road surfACE is also constantly improving, and the speed of vehicles is getting faster and faster. Therefore, the requirements for vehicle comfort will naturally increase, and the spring will slowly leave the field of passenger cars and small vehicles; another metal spring will slowly climb to the dominant position - coil spring.

每个人都熟悉螺旋弹簧：像家用玩具一样小，像家具一样大，它的存在随处可见。相较于板簧，螺旋弹簧的柔软度要好得多，但悬架结构却变得更加复杂。

Everyone is familiar with coil springs: as small as a home toy, as big as furniture, it can be seen everywhere. Compared with leaf spring, the flexibility of coil spring is much better, but the suspension structure becomes more complex.

如前所述，板簧具有车轮定位功能，但是螺旋弹簧却没有。因此，我们需要添加一些拉杆以迫使车轮保持在原位。    

As mentioned earlier, leaf springs have wheel alignment, but coil springs do not. Therefore, we need to add some tie rods to force the wheels to stay in place.

随着螺旋弹簧的普及，独立悬架已逐渐成为乘用车的主流。独立悬架和螺旋运动的结合几乎已经成为汽车领域真诚与友善的代名词。但是，人类对舒适的追求是无止境的。人们慢慢开始发现螺旋弹簧的缺点：

With the popularity of coil spring, independent suspension has gradually become the mainstream of passenger cars. The combination of independent suspension and spiral motion has almost become the pronoun of sincerity and friendliness in automobile field. However, the pursuit of comfort is endless. People slowly began to discover the shortcomings of coil springs

那是恒定的刚度。实际上，它与板簧相同：带有板簧的卡车在空的时候会很颠簸，但是在装载重物之后，车辆在行驶时变得更加灵活。实际上，螺旋弹簧也是如此： 如果弹簧太软，则在空的时候会很舒服，但是在人满为患时，汽车将直接倒塌；如果弹簧太硬，到处都是人会很舒服，空车会很颠簸。

That's constant stiffness. In fact, it's the same as leaf springs: trucks with leaf springs can be bumpy when empty, but they become more flexible when loaded with heavy loads. In fact, the same is true of coil springs: if the spring is too soft, it will be comfortable when it is empty, but when it is overcrowded, the car will collapse directly; if the spring is too hard, people everywhere will be very comfortable, and the empty car will be bumpy.

有没有办法解决这个矛盾呢？答案是有的，科学家们研究出了一个神物：空气弹簧。空气弹簧实际上是一个橡胶气囊。充满空气后，它变得有弹性。您可以把它想象成一个气球。通货膨胀压力越高，难度越大；通胀压力越低，它就越软。其道理与轮胎相同。

Is there any way to solve this contradiction? The answer is yes, scientists have developed a miracle: the air spring. The air spring is actually a rubber airbag. When filled with air, it becomes elastic. You can think of it as a balloon. The higher the inflation pressure, the more difficult it is; the lower the inflation pressure, the softer it is. The reason is the same as tire.

可以说这只是人类的福音。空车时应减少充气，满载时应增加充气，以确保弹簧始终保持***舒适状态。

It can be said that this is just the gospel of mankind. In order to ensure that the spring always keeps the best comfortable state, the inflation should be reduced when the car is empty and increased when it is fully loaded.