Rebirth 99 to become a car giant.

Chapter 300 Water leakage, abnormal noise, interference and shaking

There will be various problems during the prototype car, which is not a strange problem.

Cao Yang has long been mentally prepared for this.

But looking at Rao Yongxiang's not very confident expression, Cao Yang couldn't help but feel a little worried.

What's wrong with the sample car?

I am still thinking about whether I can bring the new car to the market in December this year.

If the problem with the prototype car is relatively large, it may not be able to catch up with the schedule.

"What's wrong?"

It's useless to think about it.

Let's clarify the situation first.

"We have prepared a report, how about I project it?"

Obviously, the situation cannot be clarified in a sentence or two.

This actually made Cao Yang a little nervous.

It shouldn't be.

I have participated in the "design" of most of the key components, and the main problems have been solved.

Can there be so many problems like this?

With a little apprehension, Cao Yang and Rao Yongxiang went to the next meeting room.

"Judging from the situation confirmed by the current test, the problems that have arisen are mainly divided into several categories."

Rao Yongxiang opened the PPT and personally reported to Cao Yang there.

The meeting this time was not as formal as it was, probably because they didn’t want so many people to know that there were various problems with the prototype car.

"The first type is mainly abnormal noise, which involves seven parts that need to be improved."

"We have quickly found a solution for some parts, and it is not expected to have any impact on the model development schedule."

"However, the problem of abnormal sound of the spring stabilizer bar involves the assembly and redesign of the rubber sleeve, which may not be completely resolved."

While reporting, Rao Yongxiang watched Cao Yang's reaction.

"You finish everything first, and then I'll see what to do."

Cao Yang glanced at Rao Yongxiang, obviously he didn't intend to talk about a solution for just one project.

"The second type is water leakage, which also involves several parts such as the sunroof and the door rubber strip. At present, the sunroof and the supplier are reviewing and responding, and it is expected to be resolved."

"However, it involves the improvement of the door rubber strip without door frame, because our technology accumulation in this area is relatively small, and the supplier's technology in this area is also relatively weak."

"So whether this problem can be completely solved, I have some concerns."

As a high-end model, or a coupe, Ziwei must have used door frames.

This kind of door can give people a fashionable and sporty look in appearance, and the sound insulation effect of the frameless door is very good. When a vehicle equipped with a frameless door opens and closes the door, the glass of the vehicle will automatically drop by 0.5 cm.

However, due to the relatively complicated technology of frameless doors, not only the maintenance cost is high, but also the design difficulty is very high.

Now it seems that something went wrong.

While listening to Rao Yongxiang's report, Cao Yang thought about the situation of each part in his mind.

"The third is the brake vibration. This should be related to the surface roughness and hardness of the brake disc. The improvement plan is also under review."

"The fourth is the problem of parts interference. Some body parts and interior parts have slight interference during assembly, but it is expected to be resolved smoothly."

"The last category is the loose installation and vibration of the exhaust pipe. The preliminary analysis is that there is a problem with the design of the bellows. This is also being discussed with the supplier to improve the plan."

Rao Yongxiang did not spend too much time explaining the details of each question, but went through the project as a whole first.

If Cao Yang is interested, he will give a detailed explanation on a certain issue.

"According to your current report, can I think that the four types of parts, the stabilizer bar, the sealing strip of the door without door frame, the brake disc and the bellows, you have no specific solutions to solve the problems encountered in the development of the prototype car?"

Cao Yang breathed a sigh of relief.

The problem is not as serious as I thought.

Although it sounds like water leaks, brake vibrations, and abnormal noises, it seems that the prototype car is rotten.

It's actually not a particularly serious problem.

The three major parts of a car, the engine, gearbox and chassis, only the chassis encountered some problems.

The other two are fine.

There are no problems with some other functional parts installed on the car, so things will be easy to handle.

However, Cao Yang can also see from this matter that the technical strength of Xingchen Automobile is still not enough.

However, any parts that have not participated in the "development" by themselves are prone to problems.

In the future, it is necessary to further strengthen the strength of Xingchen Automotive Research Institute.

"Yes, basically these four types of parts. At present, we judge that it may affect the development schedule of Ziwei Star."

Rao Yongxiang was also relieved to see that Cao Yang did not lose his temper.

Before coming to report, he was actually quite worried.

Cao Yang entrusted Rao Yongxiang with the development task of Xingchen Automobile.

If the development is not completed on time, no matter what the reason is, Rao Yongxiang's face will definitely be dull.

"Judging from the analysis data produced by everyone so far, we have done a relatively in-depth study on these problems."

"However, the direction of solution may not be the most suitable one. Let me first mention my point of view."

"Then in the next few days, I will try my best to spend time with everyone to improve these problems."

"There will be leaders coming to visit soon. It is best to improve the problems before this."

"Then it will be reflected in the official mold opening drawings, and the final mass production preparations will be made."

Cao Yang's face once again returned to that kind of confidence.

That feeling of having everything under control came back again.

"The first is the stabilizer bar. The reason for the abnormal sound is that the place where the rubber sleeve is installed will move under some road conditions, so there is an abnormal sound."

"It is not impossible to review and improve simply by changing the design of the rubber sleeve or the installation position, but I am afraid that it will take continuous trial and error to finally find a solution."

"And even if we find a solution that seems to be no problem, whether it will be no problem under various road conditions is still a problem."

"At most, the abnormal noise is not obvious, and consumers can't notice it."

"Since this is the case, why don't we simply change the way of thinking and directly connect the rubber sleeve to the stabilizer bar so that they become one. Doesn't that mean that there is no problem with the rubber sleeve moving?"

When Cao Yang said this, Rao Yongxiang was stunned for a moment.

Let the BUSH and the stabilizer bar become one, this idea has never occurred to me.

It sounds like it could be done.

But how to achieve it?

"Mr. Cao, the rubber sleeve is made of rubber, and the stabilizer bar is made of special steel. Isn't it a bit difficult to integrate them?"

The technology of rubber sleeve bonding has been widely used in the stabilizer bars of various OEMs.

But in 2005, it really didn't catch on.

It's no wonder that Rao Yongxiang doesn't understand.

"What you said is correct. The rubber sleeve is a rubber product. It has a metal skeleton inside as a support, and it is integrated through vulcanization."

"In this case, we can heat the stabilizer bar at the contact point between the rubber sleeve and the stabilizer bar, then apply some special glue, then bond the rubber sleeve to it, and perform vulcanization again."

"In the end, let the rubber sleeve be firmly fixed on the stabilizer bar, isn't it an integration?"

When Cao Yang said this, Rao Yongxiang immediately had an impression in his mind.

But how to implement it, he still feels guilty in his heart.

Fortunately, Cao Yang had already said that he would personally participate in the improvement of the design of the problematic parts, which made him less worried.

"Mr. Cao, then I will work on the design engineer of the stabilizer bar according to this plan first, and then see if I can find the kind of plan you mentioned."

Rao Yongxiang couldn't directly ask Cao Yang to design, so he could only answer first like this.

Fortunately, Cao Yang didn't bother with him about this issue.

"As for the vibration of the brake disc, to solve the problem of surface roughness and hardness uniformity, there is actually a simple and crude way."

"That is to increase the volume of the blank and increase the amount of chips, so that this problem can be improved immediately."

"Of course, this plan will lead to increased costs and is not suitable as the final improvement plan."

"At that time, I will discuss it with the designer."

If there is a problem with any part, Cao Yang will give the solution for that part.

This is no big problem for it.

"As for the problem of the exhaust pipe, the main reason is that the design of the bellows is too rigid, and the shock absorption performance is not up to standard, and there is no way to fully filter out the shock waves brought by the engine exhaust process."

"Especially because our engine has a relatively large displacement and is still a twin-turbocharged engine, the problem in this area is magnified."

"It's not that difficult to solve. We can solve this problem by directly using steel wire braided and hydraulically formed corrugated pipes as the inner and outer pipes to make the corrugated pipes lighter and better certified."

After Cao Yang finished speaking, he saw that Rao Yongxiang hesitated to speak, so he immediately added: "I'll discuss the specific plan with the engineer."

"The last door seal strip without sill is nothing more than the optimization of the cross-sectional shape."

"As long as the section design is correct, there is no need to worry about water leakage."

"It would be the best if the weather resistance of the rubber material can be improved to avoid aging after one or two years of use."

"As long as these problems are found in the right direction, they will basically be corrected in a week."

When it was time to show that he was awesome, Cao Yang was not prepared to hold back.

It is only good for the development of the company, and not bad for the people below to see how powerful they are from time to time.

"Mr. Cao, if these problems can be completed within a week, then our new car can use Hengjiu mold to produce the first batch of models in October."

"Then send it to do some certification-related tests, and you can consider starting to invite the media to engage in test drive activities and the like."

"At the same time, the relevant vehicle durability tests can also continue to advance simultaneously."

"In this way, there should be no problem in completing the roll-off of the first mass-produced car in December."

"However, for models produced at such a pace, some parts may need to be constantly changed in design and adjusted in some details in the first three months or even the first half year of mass production."

Zuo Yongxiang did not dare to easily promise that there would be no problems with Ziwei Xing at that time.

In fact, there is no such thing as a car without any problems.

It is nothing more than a difference in the size of the problem.

"Okay, just follow your rhythm."

"For overtime work, most of the molds are produced within our own group, which can save at least one month compared with the time for outsourcing."

"When the mold opening instruction is officially issued, you will start preparing for the development of the Leo and Wenquxing models."

To catch up with the dividends of the development of China's auto industry, the pace will naturally be faster.

Anyway, the first batch were all limited-edition models. After the start, Cao Yang valued the large SUV behind.

……

"Old Xun, Mr. Cao really led your people to solve all those big problems within a week?"

Xingchen Automotive Research Institute, Director of Interior Department Peng Changyi came to the office of Chassis Director Xun Qi very curiously.

There were a lot of problems with Ziweixing's prototype car, and he was naturally very aware of it.

After all, there were also some parts interference problems in the interior decoration field, which took Peng Changyi some time.

But everyone knows that the chassis department is the biggest problem.

After all, everyone knows the difficulty of changing those parts.

But just now he received a meeting notice that a Ziweixing technical evaluation meeting will be held tomorrow, the purpose is to determine whether it is possible to formally notify the component manufacturers to open molds.

For the development of a model, the release of mold opening instructions is definitely a very important node.

This means that the development work of the new car has basically been completed, and it can officially start to enter the mass production preparation.

All that's left is some tinkering.

So after seeing the meeting notice, Peng Changyi immediately came to the chassis department out of curiosity.

"All solved!"

"I personally followed Mr. Cao and watched him lead the corresponding engineers to draw the drawings of the stabilizer bar rubber sleeve, bellows and other parts."

"President Cao even explained the production process of these parts and some related precautions very clearly."

"If I hadn't seen it with my own eyes, I couldn't believe Mr. Cao's level in the research and development field is so deep."

"It's not bragging, Mr. Cao is definitely the one with the highest design level in the whole company."

"It's no wonder that Nanshan Group has achieved its current results in just a few years."

Xun Qi has now become a loyal fan of Cao Yang.

Although the age difference between the two is 20 years, it doesn't affect his admiration of Cao Yang at all.

Those who engage in technology, the most admired are those whose technical level is much higher than their own.

There is no room for falsification of these things, and an insider can tell the difference at a glance.

"It's really all done."

"President Cao is really awesome!"

"No, next time I have to ask Mr. Cao to help us improve a few parts in the interior department."

Peng Changyi couldn't help but boast.

I have more confidence in the future of Xingchen Automobile in my heart.