The car giant started by marrying the daughter of the king

Chapter 122: Do something to get revenge? (Two in one)

In the next few decades, China will import a large amount of equipment, raw materials and other products from overseas.

There are so many cases where the other party wants to sell the product at any price they want that it would take three days and three nights to finish talking about them.

As long as the pricing power is in the hands of the other party and you really have a demand, you basically have no other choice but to accept it.

There are some things that even if you are willing to pay a high price, people still won’t sell to you.

Jiang Hui repaired the fifth-generation Crown sedan for the Japanese Embassy, ​​which was a matter of having the power to set prices.

In this era, none of the cars produced by China, whether sedans or trucks, use electronic fuel injection engines.

Almost all maintenance personnel have never repaired an electronic fuel injection engine.

Similarly, automatic transmission is also a very unfamiliar thing to most Chinese technicians, and few mechanics can repair it.

If Kato Hiroyuki did not find Jiang Hui, he would basically have to hire a mechanic from China to repair the car, or ship the car back to Japan.

No matter which option it is, it is unacceptable to Hiroyuki Kato.

In the end, he will definitely have no choice but to compromise.

"1600 dollars is 1600 dollars, but these two faults must be completely resolved, otherwise we will not pay a dollar."

Kato Hiroyuki's face turned pale and he said reluctantly.

Jiang Hui didn't care.

The repair price of $1600 obviously already includes the cost of seeing Hiroyuki Kato's face.

Otherwise, you can't expect to kill someone and still have them welcome you with a smile, right?

He is not Franklin either.

"If the problem is not solved, I will be embarrassed to charge you."

"But I'm sure you've heard the rules from Smith. We have to collect half of the repair fee first."

Since Kato Hiroyuki has already called Smith, there is no need for him to be polite.

Anyway, I didn't target you specifically, I was just enforcing the rules we set before.

"Wait a minute!"

Kato Hiroyuki took a deep breath and didn't say anything more to Jiang Hui.

He was worried that if he said a few more words he would be angry to death.

"Master, the Japanese actually agreed to the price of 1600 US dollars."

Seeing Kato Hiroyuki leave to get the money, Chen Chenxing immediately approached Jiang Hui and started discussing in a low voice.

"What can I do if I disagree?"

"Are we really going to invite someone from China to come over for repairs?"

"If that's the case, after all the costs, $1600 is definitely not enough."

Jiang Hui shrugged, not at all surprised by Kato Hiroyuki's decision.

In later generations, some imported equipment in China would charge you tens of thousands of dollars just to replace a bearing. Isn't it just a pity that you could only accept it?

Or just not repair it?
impossible!

"It seems that repairing cars with electronic fuel injection engines is the most profitable. There is no other worker in the entire capital who can repair this kind of car."

Chen Chenxing is now slowly figuring out some experience.

For more common models such as BJ212 and CA10 trucks, most of the problems can be repaired by other repairmen.

It is difficult to charge a particularly high maintenance fee.

Even though the problems at Shougang were a little bigger last time, they only earned 100 yuan.

This is basically the cost ceiling for repairing conventional car models in China.

The most important thing is that when repairing a car, sometimes parts need to be replaced, which is a hassle for Jiang Hui and Chen Chenxing.

Because they don't have any spare parts except the tools for repairing the car.

When you really need to use it, you can only find a way to buy it, or choose a repair plan that does not require replacing parts.

This restriction will sooner or later affect the development of the car repair business.

"Except for a small number of imported vehicles, domestically produced vehicles will not use electronic fuel injection engines in the next five years."

"Not to mention other parts, just the ECU electronic control unit that controls the engine cannot be produced by any supporting factory."

There is no denying that there is a big gap between China's electronics industry and the international advanced level.

To catch up with this gap, it will not be done in one or two years, but will require decades of effort.

"Master, are you sure about the malfunction of this Toyota Crown today?"

Although Chen Chenxing was very confident in Jiang Hui's skills, he had never repaired an automatic transmission before, so he felt a little guilty and worried that his excitement would be in vain.

The most important thing is that if the car is not repaired today, Jiang Hui’s reputation will be affected, and it will be much more difficult to get good car repair opportunities in the future.

The main reason why the Japanese Embassy agreed to let Jiang Hui and his team repair the car this time was that they already had a track record of repairing cars at the American Liaison Office in Beijing.

"It's not a big problem. If the 4AT gearbox doesn't shift when you step on the accelerator, it's most likely that the gearbox oil pump is faulty or the clutch plate is worn. But this car is only four years old, and I see that the mileage is less than 4, so it's not driven very often, so the possibility of clutch plate wear is relatively low."

"Another possibility is that there may be a fault in the transmission control system, including failure of components such as sensors and solenoid valves, which may cause poor or erroneous transmission of the shift signal, thus affecting the shift. This can be confirmed during the disassembly process."

"The car's engine fault light was on, and the engine also stalled abnormally. My initial judgment was that a sensor failure caused the ECU to cut off the fuel supply for protection, thus causing the engine to stall."

“As long as we find the problematic sensor, we can easily solve it.”

Jiang Hui quickly explained to Chen Chenxing the cause of the failure of the Crown sedan. He also planned to let Chen Chenxing drive it later so that he could experience the feelings of the two types of failures.

Before the two of them could continue the discussion, Kato Hiroyuki came over with an envelope.

"Jiang Sang, I hope your skills are worth the repair costs."

Although there was still no smile on Kato Hiroyuki's face, he no longer had a sullen look on his face.

It seems that these Japanese people have good ability to control their emotions, otherwise they would not be arranged to work in the embassy.

"Don't worry, if this can't be fixed, I won't charge you a dollar."

"Since I dare to take half of the deposit first, it means I am sure I can fix it."

Jiang Hui did not open the envelope to count the money. He believed that Kato Hiroyuki would not do anything to such a thing. Of course, not counting the money in front of him did not mean that he would not count it later.

Feeling the charm of Franklin is also a pleasant thing.

"Okay, hurry up and repair it as soon as possible, and let me see your strength."

It was obvious that Hiroyuki Kato was prepared to watch Jiang Hui repair the car on site.

For the sake of $1600, Jiang Hui didn't plan to kick him out this time.

Anyway, when it comes to car repair, it’s definitely not the case that you can just watch once and then repair it yourself the next time you encounter the same problem.

Not to mention when you encounter other faults.

Jiang Hui didn't waste any more time and let Chen Chenxing get in the car to experience it for a few minutes. Then the two of them lifted up the Crown sedan with a jack and removed the gearbox first.

"The four-speed automatic transmission is an improvement on the three-speed automatic transmission, and it comes in two types."

"One is to add a single-row planetary gear mechanism to the original double-row planetary gear mechanism of the three-speed gearbox, and use three-row planetary gear mechanisms to form a four-speed gearbox."

"The other is to change the double-row planetary gear mechanism, change the combination of the basic components of the front and rear planetary gears and add shift operating components to make it a four-speed gearbox with an overdrive gear."

"The 4AT in front of us is produced by Aisin and adopts the first technical solution."

The process of repairing a car is a teaching process. Chen Chenxing was helping on the side while Jiang Hui explained while deftly disassembling the gearbox housing.

Disassembling auto parts is not difficult at all for Jiang Hui.

Soon, the internal structure of the gearbox appeared in front of the two.

"This is a single-row planetary gear mechanism added on the basis of 3AT. In low gear, the sun gear is active, the planet carrier is passive, and the ring gear does not move."

"In mid-gear, the sun gear does not move, the planet carrier is passive, and the ring gear is active."

"In high gear, the sun gear does not move, the planet carrier is active, and the ring gear is passive."

"When in reverse gear, the sun gear is active, the planet carrier is stationary, and the ring gear is passive."

"The transmission is in neutral when all moving parts are free."

Jiang Hui pointed at the actual object and carefully explained to Chen Chenxing the working principle of 4AT. This was a rare opportunity.

If you haven't seen the real thing, it will be difficult to understand even if you have information.

But if you try to understand it from the real object, the situation is different.

"Master, this 4AT is developed on the basis of the 3AT. The 3AT was originally supposed to have a double-row planetary gear mechanism."

"Since a single-row planetary gear mechanism can meet the needs of three forward gears, why does a 3AT automatic transmission need a double-row planetary gear mechanism?"

Chen Chenxing listened very carefully and asked questions when he didn't understand.

Even though he is disassembling a 4AT automatic transmission, he can still think of some problems with the 3AT.

"That's a good question. The 3AT automatic transmission is a very famous double-row planetary gear mechanism. It is composed of two single-row planetary gear mechanisms. Its structural feature is that the sun gears of the front and rear planetary rows are connected as a whole, called the front and rear sun gear assembly."

"The planet carrier of the front planetary row and the ring gear of the rear planetary row are connected to form another whole, which is called the front planet carrier and rear ring gear assembly."

“The output shaft is typically connected to the front planet carrier and rear ring gear assembly.”

"When a single-row planetary gear mechanism can meet the needs of three forward gears, it is designed as a double-row planetary gear mechanism because it needs to take into account the manual first gear and the frequent movement of single-row components, which causes large losses."

"Otherwise, the life of the 3AT will be greatly reduced, and there will be no way to manually engage the first and second gears."

Jiang Hui pointed at the planetary gear mechanism in front of him and explained it to Chen Chenxing bit by bit.

Hiroyuki Kato, who was standing next to him, was also speechless when he saw Jiang Hui treating car repair as teaching.

But he is a graduate of an engineering university after all, and he can roughly tell that Jiang Hui is very familiar with the structure of the gearbox.

Otherwise, I wouldn’t dare to give on-site teaching in front of me.

Because he could feel Jiang Hui's strength, he stood aside and held back in silence.

"Remember the reason I just mentioned about the malfunction of not changing gears when pressing the accelerator?"

"We are now eliminating them one by one."

After disassembling the gearbox and explaining it, we must find out the fault.

Otherwise, Kato Hiroyuki would be worried watching from the side, and Chen Chenxing would also have concerns about what he was learning.

"First, let's look at the clutch plate. Many people think that cars with automatic transmissions don't have clutches, and only manual transmissions have them. This is obviously wrong."

"In fact, it not only has one, but there are many. It's just that its clutches are all inside the gearbox and we can't see them from the outside."

"A simple four-speed automatic transmission requires at least three clutches, and a six-speed automatic transmission requires at least five clutches. The more gears, the more clutches."

"The brakes inside the automatic transmission also use a mechanism similar to the clutch, and they are usually also called clutches."

"These clutches are engaged or disengaged under the control of oil pressure to achieve gear switching."

After explaining the main structure, Jiang Hui began to explain some details to Chen Chenxing in conjunction with troubleshooting.

"The clutch of an automatic transmission is immersed in automatic transmission fluid and generally will not burn out or wear excessively."

"However, if the gearbox is overloaded for a long time, glides in neutral for a long time, or uses substandard gearbox oil, it can also cause the clutch to burn out, slip, and wear excessively."

"A typical malfunction of automatic transmission clutch slippage is that the stall speed of the transmission is too high. For example, when the D gear is engaged and the brake pedal and the accelerator pedal are pressed at the same time, the engine speed should not exceed 2600 rpm. If the speed exceeds 3000 rpm, it means that the clutch is slipping."

"In addition, clutch slippage can also cause the car to have difficulty accelerating."

Since I am teaching an apprentice, I will definitely not just talk about every problem I encounter, but instead expand the situation to more other cases.

"Compared to repairing the engine, the automatic transmission is actually more difficult to repair."

"If the clutch of an automatic transmission is excessively worn or slipping, the transmission needs to be disassembled in depth. This is a highly technical operation. Even after a dozen years, most repair shops probably won't have the technical capabilities to do this."

When Jiang Hui said this, he deliberately looked up at Kato Hiroyuki.

He knew that this Japanese man had been listening to his explanation nearby.

The other party doesn't trust me so much. After repairing the gearbox and engine, should I consider doing something to prevent this Crown sedan from having some faults in the future, and still be the kind that only I can repair?
Although it is a bit unethical to do this, Jiang Hui will not have any psychological burden if the vehicle in question is the car of the Japanese Embassy.

Of course, this fault must not be the kind that can be detected by others, or it must not be a serious situation that will cause the car to be destroyed and people to die.

Otherwise you might end up hurting yourself accidentally.

(End of this chapter)