The types and materials of the suspension are different, the cost is very different, and of course the performance is also very different. It is also reasonable to say that suspension determines the grade of vehicles.

This is like saying: you can guess that a person is well-off by looking at his clothes. Although it is not completely correct, it may even be that he deliberately pretended to be like that, but there are always some reference directions, right? Right?

Different pauses have different costs.

One of the reasons why suspension determines the grade of a car is that the cost of different types and materials of suspension is very different.

In terms of types, there are two different forms of suspension: independent suspension and dependent suspension. Some independent suspensions even adopt air suspension technology, semi-active variable damping technology and so on.

There is a big money difference between these different kinds of pauses. You see, I have said this cost difference two or three times, right?

So there are four wheels, Rolls-Royce is 5 million, Wuling Hong Guang is 50,000, and Rolls-Royce is not a 120 wheel, is it?

I found the cost of truck suspension for your reference. Wu published papers in the magazines of "Automotive Practical Technology" and "Cost Analysis and Value Research of Heavy Truck Suspension System".

The cost difference between independent plate suspension and 4-airbag air suspension is nearly 60%, which is more than half. Compared with 8-airbag air suspension, the cost difference is more than 160%. Advanced air suspension can even buy several pairs of dependent plate suspensions.

Take the extremely hot krypton gas 00 1 as an example, installing an air suspension will cost an extra 20,000 yuan. Just figure out the percentage of this car.

Even the same type of suspension, different materials, such as steel, aluminum alloy, and even more advanced carbon fiber suspension, the cost difference is very severe.

Jiang Rongchao, Jilin University, has a paper "Research on Performance Matching and Lightweight Multi-objective Optimization Method of Automobile Suspension Parts", which was mentioned above.

Under the same quality, the automobile suspension made of ultra-light steel can save 30% cost compared with aluminum suspension.

Suspension is an important part of chassis assembly, accounting for a large part of the total cost of chassis.

Cheng Hui of Shanghai Jiaotong University has a paper "Research on Cost Control Method of Spare Parts of Mass Production Vehicles Based on Value Engineering —— Taking NC Automobile Company as an Example", with statistical data.

The proportion of suspension in the chassis cost is the second highest among all components, and its influence on the total chassis cost is obvious.

Chassis assembly is one of the three major parts of an automobile, so it can be said that suspension has a great influence on the cost of the whole vehicle.

Different suspensions have different performances.

The price is different, and the performance and effect are definitely different. Where else does this price come from?

Ran of Hefei University of Technology has a doctoral thesis. Let's listen to it. The research on NVH performance optimization of automobile suspension based on virtual prototype model includes the related research on the influence of semi-active suspension with variable hardness on NVH performance of automobile.

The so-called "NVH performance" refers to the noise, vibration and vibration roughness of automobiles. In short, it is an important index to measure the comfort of the car. In the vernacular, it means "the car is not high".

The results are as follows: Compared with the passive suspension, the semi-active suspension with optimal control has a great inhibitory effect on the vertical acceleration of the mass center of mass and the amplitude of tire dynamic load.

It can effectively improve the NVH performance of vehicles, especially the vibration response of human body in this sensitive frequency band and some middle and low frequency bands. The ride comfort, safety and road friendliness of the car are improved.

This is like saying: more expensive sports shoes, soles designed with high-tech air cushions, are more comfortable and have better performance when walking and hitting the ball. Of course, they are also expensive.

What you use really depends on the grade of the car.

As for the choice of shoes for its models, whether to wear more expensive high-grade sports shoes is related to the positioning of the models by car companies.

Liu Lu published a paper "Research on Cost Control of Automobile Manufacturing Enterprises" in China Collective Economy magazine, which said: 80% of the production cost of a car has been set at the beginning of design.

When developing new products, car companies will carry out value engineering activities, strictly control costs, and match market positioning, target pricing, vehicle configuration and target cost.

To put it simply: what kind of suspension to choose has a great relationship with the positioning of the model, which has been decided before manufacturing and design.

Different grades have different suspensions.

Therefore, in general, some cars have high grade positioning and need to create advanced driving texture. Of course, the suspension with higher cost and better effect will be chosen when designing.

However, it is unlikely that the average household model of 65,438+10,000 yuan will have this budget, and the money is not enough. It is estimated that it is impossible to use advanced things such as semi-active or active suspension and variable damping air suspension.

In order to control the cost, reduce the selling price and generate market competitiveness, car companies may directly use the so-called "scooter suspension".

It's not necessarily the worst, it's also good, but what we can see is that it often appears, right? It can be explained that this level is also reasonable.