Since the birth of air suspension in the middle of the 19th century, it has experienced a century of development and experienced "pneumatic spring-airbag composite suspension → semi-active air suspension → central air suspension (ie ECAs electric controlled air suspension system)" .
It wasn't used in trucks, buses, cars, and train cars until the 1950s. At present, almost all foreign high-speed passenger cars use air suspension, and the proportion of heavy trucks using air suspension has reached more than 80%, and the application of air suspension on light vehicles is also rising rapidly.
Some cars are also gradually installed with air suspension, which is almost the only choice for special vehicles (such as instrument vehicles with high shock resistance requirements, ambulances, special military vehicles and container transport vehicles, etc.). However, our country is still in its infancy, and the air suspension system is only used in some luxury passenger cars and a small number of heavy trucks and trailers. In 1991, the Gulf War was suspended because Kuwait is full of deserts, and there are also fine and soft sands. The U.S.
Hummer is equipped with a central filling system, also known as an air suspension; the tire pressure is lowered to reduce the friction between the tire and the ground, preventing the tire from slipping in the desert, and when there are as many snowy roads as the desert, the tire pressure is lowered. The friction of the tire increases. This is the disadvantage of hydraulic suspension, air suspension and hydraulic suspension have their own advantages.
The air suspension can reduce the tire pressure to prevent slipping, the hydraulic suspension can go to high speed, and the ability to run mountains and cross rivers are all their own advantages.
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