Shen Danqing made another phone call to Wu Aiguo of Changsheng Seiko, and when the phone was connected, before Wu Aiguo could speak, Shen Danqing said to him: "Mr. Wu, when the speaker materials are ready, you can start manufacturing TVs! Temporarily make 1,000 units, and first put them in the stores of NB Trading Co., Ltd. for advertising." When the social response is strong, it will be mass-produced. Do you understand?"

"Boss, don't worry, I know what to do. Wu Aiguo replied to him.

"Well! That's it. After only a few words, Shen Danqing hung up the phone. He is a straightforward man, he doesn't like to drag mud and water when he talks and does things, and his subordinates are used to it.

From now on, there are more things. In order to coordinate the rhythm, the design of the car chassis will officially begin tomorrow. Shen Danqing raised his wrist, looked at his watch, and found that he was about to get off work, so he immediately picked up the phone and called Guo Dong from the Mechanical Technology Research Institute.

The phone rang a few times before it was connected. Guo Dong's voice came from the microphone: "Boss, I'm Guo Dong." ”

Shen Danqing said to him in a calm tone: "Dean Guo, let me inform you that I will hold an automobile chassis design seminar tomorrow morning, and I will be there on time." ”

"I see, I'll pass on your orders. Guo Dong replied to him very steadily.

"Well, that's it. Goodbye!" Shen Danqing said goodbye rarely before hanging up the phone.

is about to make a movie, but there is no shadow of car props, so Shen Danqing is in a hurry to design the car chassis.

The chassis of a car is a complex collection of systems. It has a steering system, a transmission system, a brake system, a shock absorption system, as well as some electronically assisted safety technology, as well as the arrangement of the fuel tank and so on.

It involves many disciplines of technology, and the general automobile company is not capable of developing the chassis, either copying other people's or introducing other people's technology. A mature chassis can not be developed in a short time, it takes several years and a lot of experiments.

But because of this, Shen Danqing has to start developing it now. He's not trying to build a car, he's just building a model car. So it can tolerate many of the shortcomings of the new chassis. Later, after road test improvement, road test improvement, the chassis will naturally mature.

And even if the car is officially built, he will not suddenly put it on the market in the first few years. Instead, they will use it within their own company for a few years. By then he had a way to digest a large number of cars internally. After several years of running-in, it will be put into the market again, and it will be a fairly mature model.

Luxury cars should pay more attention to quality, and the slightest shortcoming may make their brand plan die. This is also the reason why luxury cars cannot be built in China, without a mature power and chassis, who dares to build luxury cars!

The next morning, Shen Danqing did not go to the company, but went to Changsheng Seiko. When Shen Danqing arrived at the conference room, there were already many people waiting for him in the conference room.

The engineers in the "boss" conference room stood up and greeted him when they saw Shen Danqing walking into the conference room.

Shen Danqing smiled and raised his hands to press down, and said, "Everyone sit, everyone sit." Then he walked briskly to the podium and took his seat.

After everyone sat down, Shen Danqing began to speak: "Today's meeting is a seminar on automobile chassis design. The comrades of the exterior design team have already drawn a rough sketch, so the basic data of the appearance of the car has been determined. ”

Shen Danqing took out a piece of paper from his pocket when he said this, glanced at it before he continued: "Let's take notes, the length of the vehicle is 5212 mm, the width is 1902 mm, the wheelbase is 3210 mm, and the height is 1478 mm.

Of course, you don't have to pay attention to the height data for the time being, which has little to do with the chassis design of the car.

Now that the model data is out, then our chassis design can also begin. The chassis is a very complex system collection, and its parts account for the largest proportion of the car, which is a typical high incidence of barrel theory. Therefore, it is impossible to build a full-fledged chassis in a short period of time, but we are not building cars now, but car props.

It is said to be a prop, but it must be able to drive normally, and the basic structure is exactly the same as that of a normal car. It's just that the quality requirements will not be so strict, as long as the car drives for more than ten minutes and does not lie down, you are qualified

But ......" Shen Danqing said this, deliberately prolonged his voice, and then continued: "What I want to tell you is that this chassis is also the chassis prototype of our official model Tang Dynasty A6 in the future, so you must also carefully and meticulously design every component."

The times are developing, science and technology are changing, and we can't use the old eyes to study new things. So, now the chassis of other car companies no longer meets my requirements.

I divide the car chassis into two types. One is the chassis of passenger cars, and the other is the chassis of other models. Why do I divide it so much? Because the difference in the load of passenger cars has not changed much, take our Tang Dynasty A6 chassis as an example: it can only seat five people at most, and the difference between it and not carrying people is not large. Take a large truck, for example: it is empty and fully loaded, with a difference of several tens of tons. So based on these two cases, I set up two chassis, or two shock technologies.

The first technology is called non-load-bearing technology. That is, the four wheels are not rigidly connected to the body, but are connected by a double rocker arm with a built-in strong spring. In the normal posture when the road is flat, in the uneven section, the wheel is lifted or sunk, and the spring can not only play a role in shock absorption, but also restore the wheel to its original shape.

This technology is a good solution to the vehicle turbulence caused by uneven terrain. Because this is a purely mechanical shock absorption technology, it cannot cope with large load changes. Therefore, this technology can only be applied to passenger cars.

This technology has led to a revolution in tie rods. Today's tie rods are rigidly connected to hold the forward and backward displacement of the car due to speed changes. If we use a monobloc rocker arm with a built-in power spring as a tie rod, then it can not only complete the task of the old tie rod, but also play a good role in shock absorption.

The second technology is called intelligent shock absorption technology. The specific method is to set up a group of four sets of hydraulic shock absorbers on the left and right of each spindle. Each set of hydraulic shock absorbers is composed of two hydraulic shock absorbers arranged in front and rear cross.

Why is it designed this way? Cars are mainly moving front and rear. When the car accelerates, the body moves backwards. At this time, the four hydraulic shock absorbers set forward will play a good role in cushioning and damping. When the vehicle brakes, the body will move forward, so the four hydraulic shock absorbers set backward will also play a good role in shock absorption.

It's not smart even when it comes to this. We should make a small change to the hydraulic shock absorber. In the inlet and outlet of the hydraulic press, a software-controlled micro motor is set up to control the size of the inlet and outlet to achieve the purpose of controlling the damping strength and the sliding distance of the damping rod.

If there is a force suddenly applied to the hydraulic rod, then we should increase the oil outlet appropriately, and then slowly reduce the oil outlet when the hydraulic rod goes down a certain distance, so that the sudden force can be well resolved.

This is actually a sudden sudden braking or the car passing through a particularly bumpy area. If it is an ordinary hydraulic shock absorber or spring, steel plate and other shock absorption technology, it is basically hard and hard, and the passengers in the car will feel very uncomfortable, which is the usual turbulence. But if we use intelligent damping technology, this will not be the case.

The principle is very small, but you need to do a lot of experiments. Decide how big the opening, how long, and then how much to reduce and how long. The comfort of the passengers is up to you.

Just now, I only talked about the oil outlet, and there is also an oil inlet. The oil inlet can not wait for the hydraulic shock absorber to automatically recover, we should increase the oil inlet to speed up the recovery of the hydraulic rod. How much to increase is something that requires you to do a lot of experiments to prove it.

There is also an unexpected situation, such as the front wheel falling into a pit. At this time, the oil inlet should be increased to make the body sink when there is a relatively large buffer distance.

The above two shock absorption technologies are my assumptions, and you need to do experiments to confirm them. Also remember to apply for a patent.

Two types of damping technologies are used in both passenger cars. In order to play a better role in shock absorption, to give the driver and passengers the most comfortable experience. Other models only use intelligent damping technology.

This is talking about the shock absorption system, and now we will talk about the steering system. I won't talk about the rest of the steering system, it's no different from the steering system of other car companies, you can copy it. In this way, the technology has already exceeded the validity period of the patent, and everyone can copy it with confidence. ”

Speaking of this, Shen Danqing's rare humorous tone caused the engineers in the audience to burst into laughter.

After everyone's laughter subsided, Shen Danqing continued to speak: "I only talk about one technology, now the world's automobile companies are using hydraulic power steering, and our company is using electronic power steering.

The so-called electronic power steering is just a servo motor added to the hydraulic power boost. What's the advantage of this? The driver can easily twist the steering wheel when the vehicle is turned off, without having to wait for the vehicle to start for a while.

Another benefit is that it automatically stabilizes the steering wheel when the vehicle is driving at high speeds, and the driver can let go if it is driving in a straight line. There is also an appropriate increase in the intensity of hitting the steering wheel, so that the driver will not accidentally hit the general direction and cause a car accident.

I only put forward this idea, and I want you to study how to solve it, or how to achieve the above functions.

Talking about the steering system, let's talk about the transmission system. Specific to the Tang Dynasty A6 car, I can tell you that it is front-drive. Therefore, you can also copy other people's technology, this technology is also an ancient technology, there is no patent restriction for us, you can copy it with confidence. ”

"Hahahaha" Shen Danqing's words caused another burst of laughter below.

To be continued......

The intelligent damping technology in this chapter is my personal vision. I hope you enjoy it. The first more sends, thank you!