Various problems will arise when making prototypes. This is not a strange problem.
Cao Yang had long been mentally prepared for this.
But looking at Rao Yongxiang's unconfident expression, Cao Yang couldn't help but feel a little worried.
What's the big problem with the prototype car?
I am still thinking about whether I can bring the new car to the market in December this year.
If the problem with this prototype car is relatively large, it really may not be able to keep up with the schedule.
"What's wrong?"
It's useless to think about it any more.
Let’s clarify the situation first.
"We have prepared a report, how about I project it?"
Obviously, the situation cannot be explained clearly in one or two sentences.
This actually made Cao Yang a little nervous.
It shouldn't be the case.
I participated in the "design" of most of the key components, and the main problems were solved.
How could there be so many problems like this?
With a bit of anxiety, Cao Yang and Rao Yongxiang went to the conference room next to them.
"Judging from the situation confirmed in the current test, the problems are mainly divided into several categories."
Rao Yongxiang opened the PPT and reported there to Cao Yang in person.
The meeting this time was not so formal, probably because we didn’t want so many people to know that the prototype car had various problems.
"The first one is mainly abnormal noise, which involves seven parts that need to be improved."
"We have quickly found solutions for some parts and it is not expected to have any impact on the model development schedule."
"However, the abnormal noise problem of the spring stabilizer bar involves the assembly and redesign of the rubber sleeve, which may not be completely solved."
Rao Yongxiang looked at Cao Yang's reaction while reporting.
"You finish everything first, and then I'll see what to do."
Cao Yang glanced at Rao Yongxiang, obviously not intending to just listen to a solution for a project.
"The second type is water leakage, which also involves several parts such as the skylight and door strips. Currently, the skylight has been reviewed with the supplier and it is expected to be solved."
"But when it comes to improving the solution for door frameless door rubber strips, we have relatively little technical accumulation in this area, and the suppliers' technology in this area is also relatively weak."
"So I have some concerns about whether this problem can be completely solved."
As a high-end model or a coupe, Ziweixing must use door frameless doors.
This kind of door can give people a fashionable and sporty 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 vehicle's glass will automatically drop 0.5 cm. After closing the door, the vehicle's The glass will rise again, blocking the vehicle's sealing strips to prevent dust from entering the vehicle.
However, because the technology of frameless doors is relatively complex, not only the maintenance cost is high, but the design is also very difficult.
Now it seems that there is indeed something wrong.
While listening to Rao Yongxiang's report, Cao Yang was thinking about the status of each part.
"The third is brake vibration, which should be related to the surface roughness and hardness of the brake disc. Improvement plans are also under review."
"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 problem of loose installation and vibration of the exhaust pipe. Preliminary analysis shows that there is a problem with the design of the corrugated pipe. We are also discussing improvement plans with suppliers."
Rao Yongxiang did not spend too much time explaining the details of each question, but went through the project as a whole.
If Cao Yang is interested, he will explain a certain issue in detail.
"Based on your current report, can I assume that you don't have a specific plan to solve the problems encountered in the development of the prototype car for the four types of parts: stabilizer bar, frameless door sealing strip, brake disc and bellows? "
Cao Yang breathed a sigh of relief.
The problem is not as serious as I thought.
Although it sounds like there is water leakage, brake vibration, and abnormal noise, it seems that the prototype car is terrible.
In fact, it is not a particularly serious problem.
Of the three major parts of the car, the engine, gearbox and chassis, only the chassis encountered some problems.
The other two went well.
There are no problems with some other functional parts installed on the car, so things will be easier to handle.
However, Cao Yang also saw from this matter that Xingchen Automobile's technical strength was still not enough.
But any parts that you have not participated in the "development" are prone to problems.
In the future, it is necessary to further strengthen the strength of Xingchen Automobile Research Institute.
"Yes, it's basically these four types of parts. At present, we judge that it may affect Ziweixing's development schedule."
Rao Yongxiang was relieved when he saw that Cao Yang didn't lose his temper.
Before coming to report, he was actually quite worried.
Cao Yang handed over the development task of Xingchen Auto to Rao Yongxiang.
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 we have produced so far, we have conducted relatively in-depth research on these issues."
"However, the solution may not necessarily be the most suitable. Let me put forward my point of view first."
"Then in the next few days, I will try my best to take time to work with everyone to improve these problems."
"The leaders will come to visit soon. It is best to improve the problems before this."
"Then it will be reflected in the formal mold opening drawings and make final preparations for mass production."
Cao Yang's face once again returned to that confidence.
That feeling of having everything under control came back again.
"The first is the stabilizer bar. The reason for the abnormal noise is that the place where the rubber sleeve is installed moves under some road conditions, so abnormal noise is produced."
“It’s not impossible to review and improve simply by changing the design or installation position of the rubber sleeve, but I’m afraid it will take constant trial and error to finally find a solution.”
"And even if you find a solution that seems to be fine, whether it will work fine under various road conditions is still a question."
"At most, the abnormal noise is not obvious and consumers don't notice it."
"If that's the case, then why don't we just change the idea and attach the rubber sleeve directly to the stabilizer bar so that they become one body? Then there will be no problem of the rubber sleeve moving?"
When Cao Yang said this, Rao Yongxiang was stunned for a moment.
I have never thought of this idea of integrating the BUSH and the stabilizer bar.
It sounds like it's really possible.
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 into one?"
The technology of attaching rubber sleeves is now a technology commonly used in stabilizers of various OEMs.
But in 2005, it really wasn't popular.
No wonder Rao Yongxiang doesn’t understand.
"You are right. The rubber sleeve is a rubber product. It has a metal skeleton inside as a support and is integrated through vulcanization."
"In this case, we can completely 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 and vulcanize it again."
"In the end, the rubber sleeve is firmly fixed on the stabilizer bar. Isn't it integrated?"
When Cao Yang said this, Rao Yongxiang immediately had an impression in his mind.
But how to implement it specifically, he actually still felt guilty.
Fortunately, Cao Yang had already said that he would personally participate in the design and improvement of the problematic parts, which made him less worried.
"Mr. Cao, I will ask the stabilizer bar design engineer to work on this plan later and see if we can find the plan you mentioned."
Rao Yongxiang couldn't let Cao Yang design it directly, so he could only respond now.
Fortunately, Cao Yang did not bother with this issue.
"As for the problem of brake disc vibration, there is actually the simplest and crudest way to solve the problem of surface roughness and hardness uniformity."
"That is to increase the volume of the blank and increase the amount of chips, so this problem can be improved immediately."
"Of course, this plan will lead to increased costs and is not suitable as a final improvement plan."
"I will discuss it with the designers in detail at that time."
If there is a problem with any part, Cao Yang will provide a solution for that part.
This is no big problem for it.
"As for the problem with the exhaust pipe, the main reason is that the bellows design is too hard, the shock absorption performance is not up to standard, and there is no way to fully filter out the shock wave caused by the engine exhaust process."
"Especially because our engine has a relatively large displacement and is a twin-turbocharged engine, this problem is amplified."
"It is not that difficult to solve. This problem can be solved by directly using steel wire braiding and hydroformed corrugated pipes as the inner and outer pipes to make the corrugated pipes lighter and better inspected."
After Cao Yang finished speaking, he saw that Rao Yongxiang was hesitant to speak, and immediately added: "I will discuss the specific plan with the engineer."
“The last threshold-less door sealing strip is nothing more than a matter of optimizing the cross-sectional shape.”
“As long as the cross-section design is correct, you don’t have to worry about water leakage.”
"It would be best if the weather resistance of rubber materials could be improved to avoid aging after one or two years of use."
"As long as we look in the right direction for these problems, we can basically fix them in a week."
When it was time to show off his awesomeness, Cao Yang was not prepared to hold back.
Let the people below see how powerful you are from time to time, which will only be good for the development of the company, not bad.
"Mr. Cao, if these problems can be completed within a week, then our new car can use the Hengjiu mold to produce the first batch of models in October."
"Then it will be sent to do some certification-related tests, and we can consider starting to invite the media to conduct test drive activities and the like."
"At the same time, related vehicle durability tests can also continue to be advanced simultaneously."
"In this way, there should be no problem in completing the first batch of mass-produced cars rolling off the assembly line in December."
"However, for models produced at such a pace, there may be some parts that require constant design changes and adjustments to some details three months or even the first half year before mass production."
Yao Yongxiang did not dare to promise easily that there would be no problems with Ziweixing by then.
In fact, there is no such thing as a car without any problems.
It’s nothing more than a difference in the size of the problem.
"Okay, just follow your pace."
"When it comes to overtime work, most of the molds are produced within our own group, which can save at least a month compared to outsourcing."
"When the mold opening instructions are officially issued, you will start preparing for the development of the Leo and Wenquxing models."
To catch up with the dividends from the development of China's automobile industry, the pace will naturally be faster.
Anyway, the first batch are limited edition models. After getting started, the large SUVs that follow are what Cao Yang values most.
…
"Lao Xun, did Mr. Cao really lead your people to solve all those big problems within a week?"
Xingchen Automobile Research Institute, Interior Department Director Peng Changyi came to the office of Chassis Department Director Xun Qi out of curiosity.
Ziweixing's prototype car had a lot of problems, and he was naturally aware of them.
After all, there were also some problems with parts interference 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 how difficult it is to modify those parts.
But he just received a meeting notice, and a technical evaluation meeting of Ziweixing will be held tomorrow. The purpose is to determine whether the parts manufacturer can be officially notified to open the mold.
For the development of a car model, the issuance 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 preparations for mass production can officially begin.
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 draw the drawings of stabilizer rubber sleeves, bellows and other parts with the corresponding engineers."
"Even the production process of these parts and some related precautions, Mr. Cao explained clearly."
"If I hadn't seen it with my own eyes, I wouldn't have believed that Mr. Cao was so advanced in the field of R&D."
"I'm not bragging, Mr. Cao is definitely the one with the highest design level in the company."
"No wonder Nanshan Group has achieved such results in just a few years."
Xun Qi has now become a loyal fan of Cao Yang.
Although the age difference between the two was twenty years, it did not affect his admiration for Cao Yang at all.
Those who work in technology, what they admire the most are those whose technical level is much higher than themselves.
There is no room for fraud in these things, and an expert can tell them apart at a glance.
"It's actually all done."
"Mr. Cao is really awesome!"
"No, next time I have to ask Mr. Cao to help our interior department improve a few more parts."
Peng Changyi couldn't help but praise.
I feel more confident about the future of Xingchen Automobile.
(End of chapter)
