Automotive Black Technology Chapter 283: ：I can’t express the pain in my heart

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Although there are various suspension methods on various cars now, if they are roughly distinguished, they can be divided into two major categories.

Non-independent, independent.

The structure of the non-independent suspension is actually very simple. It is the load-bearing structure of the four-wheel drive vehicle that boys used to play when they were young - one axle with two wheels.

Applied to real cars, although the structure is much more complex than that of four-wheel drive vehicles, the principles are the same.

The advantage of this type of suspension is that it can bear the greatest possible load, but it has many disadvantages. The biggest one is the poor performance in maintaining the vehicle's posture and driving stability.

The reason is very simple, you can imagine it.

Add two wheels to one axle, and if there are bumps on one side of the road, because the two wheels are hard-connected, changes in the angle of one wheel will inevitably affect the other side.

This situation is reflected in the driver and passengers in the car, that is, the car feels shaking and bumpy.

And because the angles of both wheels will change, the grip performance is also unsatisfactory.

But independent suspension is much better in comparison.

Independent, as the name suggests, the wheels are independent and have no hard connections. When one wheel jumps and changes angle and height, the other side doesn't follow suit. Therefore, the wheels on both sides can remain independent of each other and can be kept as perpendicular to the ground as possible.

The advantage of this type of suspension is that the contact area between the tire and the ground is large, thereby ensuring the tire's grip and driving stability.

Different car models choose different forms of suspension based on load-carrying requirements. For example, trucks that mainly carry loads often use non-independent suspension, and the left and right wheels are connected with rigid axles with excellent toughness to ensure the load-bearing performance of the chassis.

The model that Zhengxin Laboratory is currently working on must choose independent suspension.

Sports cars pursue speed.

You must know that the lateral acceleration force generated by the vehicle when cornering is very large. Only by keeping each wheel close to the road surface and making the surface area between the tires and the ground as large as possible can the vehicle's power be ensured not to be lost. and better handling.

So now...Wang Rui's team is struggling with independent suspension.

But despite the fact that suspension is simple to say, it is composed of those three major parts. But how to do this well is easier said than done. Understanding the principles and how to apply them are not on the same level.

In the area of ​​independent suspension, there are many ready-made templates. But that’s all about earning money from patents, and Wai Guoren is making money just by doing this.

So if you want to rely on your own research and development, even if you use TT and X-power as references to come up with a suspension system that is suitable for current models, you still need to climb a few layers of mountains.

The materials science and mechanics skills involved are quite complicated.

The shape, length, and position of each connecting rod, even if it is slightly unreasonable, will cause consequences that no one can bear to see.

You know, Hong Rui's broken shaft incident has not yet passed half a year. Why did Mitsubishi break its axle? It’s not because of design flaws!

So, an irresponsible team of designers can be as destructive as a wave of murderers.

If you are not rigorous and responsible, it is equivalent to seeking wealth and murder!

With such psychological pressure, the progress of Wang Rui's team is quite slow.

After learning about this situation, Li Fanyu felt really anxious.

This feels like a Japanese Blu-ray 5-code movie masterpiece by a famous female artist of human body fluids. When the download speed reached 85% at a speed of 2M/s, the network suddenly got stuck and the situation changed. It became 12K/second...

This guy is such a **** man that he can’t bear it.

What is even more embarrassing is that I also said before that I would not directly participate in specific research and development work. And just now, I made another promise to the rigid-looking Lao Zhang...

So faced with Xu Fufang’s complaints, Li Fanyu was speechless for a while.

After thinking for a long time, he could only hesitate and said: "Hey... the market situation has changed now. The model we are developing has already had four competing models in a short period of time. One is from Mazda. One is from Italy’s Alfa Romeo. I just learned that time waits for no one, brother.”

It is said that the three top students spend all day either in the laboratory or in front of a computer filled with information. They really don't care much about things in the market.

In addition, Li Fanyu is not in the laboratory recently and the research and development tasks are heavy, so these three perverts are almost living in the laboratory and running around.

Even Xu Fufang, the most normal among the three, looked slovenly with a long beard.

I don’t even have time to shave, let alone read the news and pay attention to hot topics in the industry.

Hearing what Li Fanyu said, he could fully understand.

In the final analysis, R&D exists for the market. If there are no market factors, then research and development will be meaningless.

Demand creates the market, the market creates competition, and competition can stimulate creativity.

This is an invariable theorem of economic society.

"Hmm... How about you come and take Wang Rui and the others... to catch up on the progress?" Xu Fufang is an old brother after all. Although he was worried about Lao Zhang, he still tentatively put forward his opinion.

Li Fanyu grinned, "I don't think there is any other way."

……

Lao Zhang felt bad about Li Fanyu's betrayal.

He fully believes that the current research and development is a key node for these student teams to truly mature. Since the project was launched, he has devoted almost all his energy to supervising every team. Strive to allow them to tap into their full potential and move toward true maturity.

So facing Li Fanyu at this time, he naturally didn't have a good face.

"Don't talk to me about competitive factors. Mazda and Alfa Romeo just held a press conference to announce the launch of models for this market. Didn't they complete the research and development? I don't understand how anxious you are. What! Xiaofan, you are my best student. I know that if you take action, you can complete the research and development work quickly.

But don’t you think it’s time to give your brothers and sisters a chance? They can't always be under your intervention! I know it's selfish to say that, but I also know that you create all these opportunities for them. But even if the teacher begs you, please don't interfere this time and let them do it. ”

Lao Zhang is an outspoken person who says whatever he wants.

Faced with his pleading words, Li Fanyu was too embarrassed to say anything.

Teacher, if there was no deadline for the task, I wouldn’t be in a hurry! (To be continued.)