Chery Xingtu's first pure electric sedan, the Star Era ES, has been officially launched, and the reviews of this car can be said to be mixed, but there is one configuration that can get almost 100% praise.
This configuration is called "air suspension", also known as air suspension.
It seems that they are all talking about the good air suspension, talking about a 2258-33.The 980,000 sedan is equipped with air suspension as standard, which is very sincere;Objectively, it is indeed sincere to be able to achieve the standard configuration, but the configuration of air suspension can be said to have advantages and disadvantages.
In a nutshell, air suspension is the concept of "air springs".
The suspension consists of two parts, one is the elastic element and the shock absorber, and the other is the various connecting rods and rocker arms;The first part is responsible for connecting and supporting the body and playing the role of vibration damping;The second part plays the role of wheel guidance, the car will swing the wheels when turning, the swing process will reduce the wheel contact with the ground, and the ground area will affect the grip of the wheels, so it is necessary to control the wheel inclination through multi-link, MacPherson, double wishbone and other structures.
Air suspension belongs to the first part, which is essentially an "elastic element".
There are various types of elastic elements, the most commonly used is coil springs, followed by torsion bar springs, and leaf springs are mostly used in heavy-duty vehiclesThe air suspension is actually a set of elastic element assembly that can be inflated, and the air pressure can be adjusted through the inflation system and control unit, and different air pressure will bring different vibration damping capabilities, or it is understood that different air pressure is equivalent to different strengths - to put it bluntly, it is like a coil spring with adjustable strength. This is the so-called air suspension, which is a bit exaggerated, and the concept of suspension is definitely more than just an elastic element. You must know that even if you use airbag springs, the first part of the suspension must still be equipped with shock absorbers, so the ideal combination should be the airbag springs and electromagnetic shock absorbers, and if there is also active preview and pre-adjustment, you can reach the ultimate standard.
The average air suspension has only two functions:
Hardness adjustment. Height adjustment.
The intensity can be adjusted by different air pressures, i.e. the shock absorption capacity;At the same time, it can also adjust the height, but for a car, the adjustment of the chassis ground clearance is not very practical, after all, the car generally does not go to the rough road conditions are more complicated.
Therefore, the main role is to adjust the hardness, but the adjustment of the hardness can not only improve the ride comfort, but also adjust the handling limit of the vehicle;For example, if you adjust it to the hardest level, the degree of roll of the vehicle will be less when cornering, and the vehicle will not be easy to slide.
The first section explains the advantages of air suspension, but the disadvantages are also very prominent.
The maintenance cost of air suspension is very high, and the structure is more complex, such as compressors, air pumps, and high-pressure air storage tanks are necessaryHowever, the airbag will also deteriorate during normal use, and the obstacles that appear when driving on complex roads may also cause damage to the airbag. Even if you are only driving on paved roads, the aging of the airbag will be accelerated by the moisture in the air during the pumping process, and even if the airbag has a desiccant, it cannot completely overcome this problem.
Therefore, although air suspension can bring about an improvement in the driving experience, it also objectively increases the potential cost of the vehicle.
Important points to know:
Generally, the service life of air suspension is about five years, unless the frequency of use of the car is very low to prolong the service life, then the assembly needs to be replaced.
Although the maintenance and accessories costs of domestic cars are lower than those of joint ventures and imported cars, the cost of replacing a set of air suspension will be at least 10,000 yuanBecause the cost price is on this standard line, the lower the car, the less suitable it is for air suspension.
In fact, the lowest car that uses air suspension is not the Star Era ES, but the old JMC Ford Toureo, and the rear suspension is a torsion beam with airbag springs and shock absorbers;However, the best Toureo does not use air suspension, and the reason is that users do not buy it.
Users who buy two or three hundred thousand cars have not reached the level of not caring about the cost of using the car at all, so the air suspension for Star Era ES is actually a double-edged sword;As for the lifetime warranty of the first owner, it does not solve the problem, you must know that the damage caused by aging is not covered by the warranty.
Editor: Tianhe Auto-Automotive Science Island, released by Tianhe MCN, welcome to retweet and comment.
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