Motors are not a new technology.

After the discovery of electricity, the motor was almost synchronously invented.

Cao Yang also told the company's technical team that Nanshan Group's motors should use flat wire technology to minimize the volume of the motor and improve the performance of the cell.

Until now, the development of hybrid motors has progressed faster than that of hybrid batteries.

But it's not completely finalized.

The main problem is that the NVH is not up to standard.

Conventional internal combustion engine vehicles are started or turned off by the driver through keys or buttons, and whether the FHEV engine intervenes in the output of the power system is generally not controlled by the driver.

It is controlled by the vehicle control unit according to the driving state of the vehicle to control the engine start and stop, whether to intervene in the power output.

This start-stop is often carried out without the driver's expectation, which can significantly affect the vehicle's ride comfort.

If it is a general economy model, NVH is not a big problem, and consumers will not be particularly concerned.

However, Xingchen Automobile wants to produce high-end models, so it is natural to solve the related problems to the greatest extent.

"Mr. Cao, one of the main reasons why the NVH of the motor used in the hybrid is not up to standard is the vibration problem caused by the frequent start/stop of the engine."

"We've made some improvements, but they're not ideal."

Since the electric motor used in this hybrid is connected to the gearbox, it can even be said to be a component of the gearbox.

So Ji Hua was also personally involved.

He's good at gearboxes, though, but that's a traditional gearbox.

The gearbox used in this hybrid is relatively less powerful.

Fortunately, Cao Yang already has a plan to improve the NVH of this hybrid motor.

"To solve this problem, you need to start from multiple angles at the same time."

"The first step is to optimize engine starting torque and in-cylinder pump pressure."

"The starting torque is smoothed out by optimizing the torque output of the starter motor."

"The effect of the pump pressure in the cylinder on the start-up vibration needs to be optimized by adjusting the intake valve closing time."

"Stopping vibrations can also be optimized by the above two adjustments."

"The second direction is to control the vibration caused by the rapid rise in torque after the ignition of the engine."

"The specific method is to stabilize combustion by controlling the amount of fuel injection."

"Delay the ignition time to reduce torque."

"At the same time, the valve advance angle is optimized to improve the amount of intake volume variation."

"This needs to be developed and debugged in cooperation with Nanshan Engine."

Cao Yang threw out his own solution step by step.

In many cases, these technicians of Nanshan Group are not really good at their level, but they are not very sure where the specific improvement direction is before they have done these things.

As long as the direction is clear, all that remains is a matter of debugging a few more times.

"Third, control the position of the initial crank angle of the engine."

"The engine starting vibration will be very different under different initial crank angles, so choose the initial crank angle that can minimize the engine starting vibration."

"Of course, the powertrain mounts can also be optimised synchronously."

"Through the above methods, the vibration problem caused by engine start and stop can be basically solved."

For Cao Yang, the so-called motor NVH problem is not a simple motor problem, but a problem of the hybrid system as a whole.

It is necessary to find a solution from all directions such as engine, gearbox, and motor.

In conventional internal combustion engine vehicles, many noise problems are masked by engine noise.

In a hybrid, when the internal combustion engine is turned off, some special noise problems become more prominent.

This is also what needs to be faced in the development process of Xingchen-3.

Of course, with Cao Yang here, these problems will definitely be solved in the end.

Seeing that Cao Yang discussed with the technicians for a few days, the redesigned parts performed much better in the process of simulation.

"Mr. Cao, the hum and vibration problems of the engine when it is running at low speed are not very ideal now."

Since it has been spread out to discuss technical issues, Ji Hua naturally threw out all the questions unceremoniously.

At the beginning, he was attracted by the 6AT automatic transmission technology thrown by Cao Yang.

Therefore, he knows Cao Yang's technical level better than anyone else.

"As a hybrid engine, in order to improve the fuel economy of the engine at low speeds, some parameters of the engine need to be adjusted to produce more torque at low speeds, but this tends to produce more body vibrations and hum due to the torque fluctuations of the engine when operating at low speeds."

"The balance between the two also needs to be discussed with Nanshan Engine."

"In the future, the two companies can set up a project team in a row to carry out joint research and development for hybrid systems."

"In this way, some problems can be solved more quickly."

Nanshan Group is now also a big business.

Whether it is a Nanshan gearbox or a Nanshan engine, it is very capable of playing alone.

Not to mention other Nanshan gearboxes.

An enterprise is a ten-billion-level existence.

In this case, the communication with other branches is not so smooth.

Fortunately, Ji Hua also reacted quickly, and when Cao Yang said these words, he realized this.

So he immediately said that he would personally follow up on relevant matters later.

"Mr. Cao, the control system of this hybrid motor should also be developed together with the engine, gearbox, and motor, and even with the hybrid battery and sensors."

"I think it's better to transfer personnel from several fields together to form a joint R&D project team to follow up on the research of hybrid systems?"

Ji Hua saw that Cao Yang seemed to be ready to end the meeting and go to participate in the research and development of other parts, and immediately proposed a new plan.

He knows that the hybrid system will not only be used on the Xingchen 3 in the future, but will definitely be used in new models in the future.

Naturally, the importance of the hybrid system has been raised by several levels.

Especially judging from Cao Yang's whereabouts in the past two days, the research and development of batteries is one of the areas he attaches the most importance to.

In this case, it means that the importance of hybrid systems will also increase in the future.

Now that hybrid batteries and hybrid motors have a clear direction for technical improvement, he naturally hopes to use the power of Cao Yang to push the research and development progress forward.

"No problem, the hybrid system being studied now is the first generation hybrid system of Nanshan Group, and there will definitely be second, third, and even fourth-generation systems in the future."

"Some improvements need to be made on all fronts."

"As for the development of the power control unit and the motor control system, it has also been discussed before."

"Semiconductor components such as IGBTs can be purchased from abroad when the first generation of products is also acceptable."

"But we also need to formulate a detailed localization plan and communicate more with Nanshan BYD Semiconductor and Huawei HiSilicon."

"Let's see what people are good at."

"As long as localization can be realized, it does not necessarily mean that all of them have to be solved by our own semiconductor division."

Cao Yang naturally knows very well that such special parts and components are still more technologically advanced in the industry, and Nanshan Group has no way to get it right away.

But some preliminary work can be done.

When the financial crisis comes, we will vigorously expand the research on chips, acquire some companies, and then we can launch the second generation of products.

At that time, the situation was completely different.

"No problem, the chips on the TCU now actually adopt a similar idea."

"At the beginning, all of them were imported, and now a large part of them are domestically produced, and only the core control chips still need to be imported."

"However, judging from the current cooperative R&D situation on HiSilicon's side, there is hope for domestic production next year."

Although Jihua does not specialize in semiconductors, the development of gearboxes cannot avoid the research of TCU.

The same is true for the use of various semiconductor components.

"As far as I know, BYD is also developing a hybrid system, but they may want to plug in the hybrid directly."

"You can also find an opportunity to talk to them, and we can improve each other."

The positioning of the cars produced by BYD is completely different from that of Xingchen Automobile.

Therefore, although there is some competition between them, they are not particularly defensive.

The main reason is that the cooperative relationship between the two sides is very close, and many of BYD's technicians have the impression that the technical level of Nanshan Group is higher than their own.

In this way, the defensive psychology of Nanshan Group has been reduced a lot.

It's like in the 80s, people in China always felt that their technology was not good.

Therefore, when people from abroad come to investigate, they will rarely be vigilant.

In this way, it is easy to lead to some technologies being stolen by others inadvertently.

Even because he did not register a patent, in the end, the patent for this technology was in the hands of the stealer.

I have to say, it's a pity.

"I'll make an appointment next week to talk to them."

"It just so happens that they are also developing some new models, and some of them involve the tuning work related to the engine and gearbox, which we need to cooperate with."

Ji Hua is naturally very familiar with BYD's people.

For the task ordered by Cao Yang, he didn't feel any pressure at all.

However, the hybrid system can easily find a breakthrough, and when it comes to the development of bottleneck parts such as carbon fiber, everyone is a little helpless.

"Mr. Cao, for carbon fiber rearview mirrors and carbon fiber spoilers, we are going to buy a batch of carbon fiber from Dongying Toray, and then try to produce related parts."

"However, judging from the current contact with the other party, they are only willing to sell some of the first generation of carbon fiber to us."

"This kind of carbon fiber can't fully meet the processing requirements of our parts."

Dai Hanbiao looked at Cao Yang a little worriedly.

There are many types of parts that need to be researched and developed in Nanshan Auto Parts, and it is naturally impossible for the research and development of each part to be so smooth.

So after encountering a problem, he was not afraid to report to Cao Yang.

"In terms of carbon fiber research, what is the situation in China?"

Cao Yang habitually wants to purchase various raw materials and equipment from China, which is not exactly the same way for many people now.

China only joined the WTO a few years ago, and many people are convinced of the theory of international division of labor.

Like Cao Yang, it seems that he is about to decouple from the international market at every turn.

"China's carbon fiber industry started in the 60s of the 20th century, almost at the same time as Dongying, the United States and other countries."

"However, due to the lack of relevant knowledge reserves, intellectual property ownership and other issues, the development has been slow."

"At the same time, Dongying, the United States and other countries have formed a monopoly on the core technology of carbon fiber, and the overall level of carbon fiber production technology and equipment in China lags behind that of foreign countries, and the development has stagnated for a long period of time, unable to meet the needs of high-end fields such as major national equipment."

"Since 2000, Huaxia has increased its support for independent innovation in the field of carbon fiber, and listed carbon fiber as a key research and development project."

"With the strong support of policies, the domestic carbon fiber industry has made a major breakthrough in technology, and the degree of industrialization has increased rapidly."

"But at present, there are breakthroughs mainly in some relatively low-end fields, and high-end carbon fiber still needs to be imported."

"We are also working with Nanshan Equipment to see if we can directly produce carbon fiber ourselves."

Dai Hanbiao is obviously aware of the importance of carbon fiber.

Such a special thing is worthy of Nanshan Group's intervention.

The main thing is that this thing can not only be used in high-end cars, but also has the possibility of application in aerospace, marine engineering, new energy equipment, construction machinery, transportation facilities and other fields.

It is a strategic new material with broad application prospects.

From the establishment of two material companies, Nanshan Special Steel and Nanshan Chemical, Dai Hanbiao can feel Cao Yang's attention to special materials.

After all, a branch such as Nanshan Chemical, which specializes in the production of special modified resin materials, takes a similar route to Nanshan Special Steel.

Carbon fiber is such a special new material, and it is naturally worth setting up a Nanshan carbon fiber to specialize in research and production.

"In the manufacturing process of carbon fiber, the fiber drawing process is the most critical part."

"The drawing process determines the strength and performance of the carbon fibers and requires a high degree of precise control."

"The biggest challenge in this process is how to pull the carbon fiber yarn out of the high-temperature furnace to ensure the consistency and uniformity of the fibers."

"I will work with Nanshan Equipment next week to discuss the independent research and development of fiber drawing equipment."

"In addition to this, fiber pyrolysis is also a crucial step in the manufacturing process of carbon fibers."

"In the pyrolysis process, the fibers at high temperatures undergo a chemical reaction to remove impurities and gases from the fibers to form high-purity carbon fibers."

"However, the temperature and time control involved in the pyrolysis process is critical, and temperatures that are too high or too low can lead to a decrease in the quality of the carbon fiber."

"In this regard, I will also try to find some technical information, and then we will directly try to improve it."

Cao Yang can't directly give some technical parameters now, it is unnecessary and difficult to explain.

So it's a good idea to arrange someone to prepare when the time comes.

As for what these preparations are, there is no need to explain them to Dai Hanbiao.

"That's great."

"In the early days, we already had some related equipment in the laboratory, but it was only used in the experimental state, and there was no way to mass produce it."

"If everything is ideal, then we can still catch up with the final mass production and loading."

For some parts that are not so critical, the parts that are not installed in the early prototype or are inconsistent with the final mass production are actually not very related.

"Don't wait, the preparation of the carbon fiber factory can start moving."

"Some of the more ordinary equipment, limited by the development schedule, we can buy directly from the Dongying equipment manufacturer."

"For some of the more critical equipment, it is solved through the independent research and development of Nanshan equipment."

"Carbon fiber, we must master this thing."

"Even around carbon fiber products, we can further expand our business, not limited to auto parts."

"Or you can go to Ferrari, Lamborghini, Ferrari and other high-end car companies in the future to see if you can undertake their carbon fiber parts."

"With the carbon fiber technology we have mastered in the future, those carbon fiber parts manufacturers in Europe are not opponents at all."

"Even if you keep your profits high, you can be cost-competitive."

Cao Yang obviously attaches great importance to carbon fiber.

It's definitely a promising industry.

Although the scale is relatively large, the profit margin is not low.

"No problem, I plan to set up a carbon fiber department in Nanshan Auto Parts first, and I can expand into a specialized carbon fiber company in the future."

Although Dai Hanbiao was weak in his heart, but Cao Yang said so, he must have rolled up his sleeves and worked hard.

"By the way, in terms of tires, there is still no domestic manufacturer that can meet our requirements?"

Cao Yang naturally also knows that the tires of Xingchen Automobile are all purchased from Michelin.

But he didn't want that to continue.

"Mr. Cao, there are actually quite a lot of domestic tire companies."

"Linglong, Huili, Wanli, Shuangqian, Fengshen, Haida and other tire companies have a long history of producing tires."

"They also supply tires to some domestic self-owned brand car companies, and at the same time supply tires to some commercial vehicles."

"But frankly speaking, their tires have a big gap with Michelin in terms of quietness and braking performance."

"For example, the braking distance of 100km/h-0 on dry roads, we have tested it ourselves, and foreign tires such as Michelin and Bridgestone can generally reach within 40 meters."

"The domestic tires are basically more than 42 meters, and the difference of 2 meters does not seem to be much, but in an emergency, you can judge whether there is an accident and the loss caused by the accident."

"In particular, Xingchen No. 2 as a large SUV and Xingchen No. 3 as a sports car, the requirements for tires are much higher than those of ordinary cars."

"In this case, I think that domestic tire companies will not have the strength to produce tires with the same performance in five years."

Dai Hanbiao's cognition did not surprise Cao Yang.

Tires look the same.

However, everyone's material formula is different, and the production process parameters are different, and the results will be very different.

The technical content in this is actually not low at all.

In particular, tires are parts that are directly related to driving safety, and consumers can intuitively feel some of its differences.

At this time, if you want to forcibly go to the car companies of your own brand, it is a matter of self-destruction of the Great Wall.

Cao Yang naturally wouldn't do such a thing so bluntly.

"Taking advantage of the opportunity of our new model development, we can have more contact with Michelin and other manufacturers."

"When the time comes, let Xingchen Automobile Research Institute set up a tire team with you, in addition to being responsible for testing tires, but also to inspect the production sites of Michelin and other manufacturers."

"You can even study some material formulations of tires, and in the future, you can consider choosing one or two more promising domestic manufacturers to cooperate."

"Through technical cooperation or product OEM, let them give us Xingchen Automobile support."

Cao Yang naturally can directly come up with a process formula that is better than Michelin's current tires.

But without any disguise, this action is too abrupt.

In addition, tires are different from other parts, and its production process is still relatively complex, requiring a lot of equipment and plant investment.

In the case that there are already so many tire companies in China, it is obviously not particularly appropriate for Nanshan Group to invest in tire factories again.

It is better to find a few domestic tire companies that attach more importance to technical research to cooperate, so that Xingchen Automobile can use domestic tires in the future.

Even taking this opportunity to let Nanshan investment also involve the layout of rubber, it is not impossible to consider.

Cao Yang has the impression that for a period of time in the future, the supply and demand relationship of natural rubber has also reversed, and the price has skyrocketed.

Although the investment income in this is not as exaggerated as this year's A-share investment, it is not bad.

"No problem, there are still more relevant talents in the tire industry."

"It should be very easy for us to set up a tire development team."

"It's just that to really develop a product comparable to Michelin, it may take a long time to accumulate."

Sometimes, the more you know, the more you understand, the more empty your heart becomes.

Because the gap is there, but you don't even understand the direction of improvement.

Otherwise, there are so many tire companies in China, why haven't there been a few that can get their hands on them so far?

Not to mention supporting high-end car companies, even Volkswagen and GM dare not use it now.

Even BYD, Chery, these independent brand car companies, in addition to spare tires, most of them are still using the products of tire companies such as Gaoli and Dongying.

A situation like this also exists in many other parts of the car.

"Everything is difficult at the beginning, as long as the R&D team is formed and the right formula is found, the performance improvement may not be as difficult as everyone thinks."

When Cao Yang said this, Dai Hanbiao naturally would not refute it.

However, the pressure in his heart has increased a lot.

Obviously, it can be seen from this dialogue process that Cao Yang does not have so much patience to wait for ten or eight years.

If there are no results in a few years, then Dai Hanbiao is estimated to have to move his buttocks.

This is clearly not the outcome that Dai Hanbiao wants to see.

What is the future of the Nanshan Group, these people are the ones who have the most right to speak.

It seems that the only way to do it is to work more curly.

(End of chapter)