Chapter 122: Do something to take revenge? (2-in-1)
China will import a large amount of equipment, raw materials and other products from overseas in the next few decades.
It would take three days and three nights to talk about the case where the other party could sell it for as much money as they wanted.
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 even things that you are willing to pay a high price for, but others are still unwilling to sell.
Jiang Hui repaired the fifth-generation Crown sedan for the Japanese Embassy. This was a matter of having the pricing power.
In this era, none of the cars produced by China, whether cars or trucks, use EFI engines.
Almost all maintenance personnel have never repaired EFI engines.
Similarly, automatic transmissions are also a very unfamiliar existence to most Chinese technicians, and few car repairmen can repair them.
If Kato Hiroyuki didn't find Jiang Hui, he would basically have to hire a repairman from China to repair the car, or transport the car back to Japan.
No matter which plan it is, it is not acceptable to Kato Hiroyuki.
In the end, he will definitely have no choice but to compromise.
“1600 US dollars is 1600 US dollars, but these two faults must be completely solved, otherwise we will not pay a dollar.”
Kato Hiroyuki’s face was livid and he was very reluctant said.
Jiang Hui doesn’t care.
The repair price of US$1,600 obviously includes the cost of seeing Kato Hiroyuki's face.
Otherwise, you can’t expect to kill others and still expect others to greet you with a smile, right?
He is not Franklin either.
"If the fault is not solved, I will be embarrassed to collect the money."
"But you must have heard the rules from Smith. We have to charge half of the repair fee first. ”
Since Kato Hiroyuki had already called Smith, there was no need for him to be polite.
Anyway, I didn’t target you specifically, I just implemented the rules I set before.
"Wait a minute!"
Kato Hiroyuki took a deep breath and did not talk to Jiang Hui anymore.
He was worried that he would be angry to death if he said a few more words.
"Master, the Japanese actually agreed to the price of 1,600 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 we do if we disagree?”
“Is it really possible to hire someone from China to repair it?”
“If this is the case, all kinds of costs will After spending it, $1,600 is absolutely unstoppable.”
Jiang Hui shrugged, not surprised at all by Kato Hiroyuki's decision.
Some imported equipment from China in later generations can charge you tens of thousands of yuan just to replace a bearing, so you can only accept it with pinched noses?
Otherwise we won’t cultivate?
Impossible!
“It seems that repairing cars with EFI engines is the most profitable. There is no other worker in the entire capital who can repair such cars.”
Chen Chenxing is now slowly gaining experience.
For example, on the more common BJ212 and CA10 trucks, most of the problems can be repaired by other maintenance workers.
It is difficult to charge extremely high maintenance fees.
Even if the problem at Shougang was a little bigger last time, we still earned 100 yuan.
This is basically the ceiling of the cost of repairing conventional models in China.
The most important thing is that parts sometimes need to be replaced when repairing the car, which is a troublesome thing for Jiang Hui and Chen Chenxing.
Because apart from the tools for repairing the car, they don’t have any spare parts.
When you really need to use it, you can only find a way to buy it, or choose a maintenance solution that does not require replacement of parts.
Sooner or later, this restriction will affect the development of the car repair business.
“Except for a small number of imported vehicles, EFI engines will not be used in domestically produced models in the next five years.”
"Not to mention other parts, just an ECU electronic control unit that controls the engine cannot be produced by any supporting factory."
China's electronics industry has a relatively large gap compared with the international advanced level. There is no way to deny this.
Catching up with this gap will not happen in one or two years, but will require decades of hard work.
"Master, are you sure about the Toyota Crown's fault today?"
Although Chen Chenxing is very confident in Jiang Hui's technology, the matter of repairing the automatic transmission has not been solved before. He had never done it before, and he felt a little guilty, worried that his joy would be in vain.
The most important thing is that if it is not repaired today, Jiang Hui's reputation will be affected. It will be much more difficult to get good car repair opportunities in the future.
This time, the Japanese Embassy will choose to allow Jiang Hui and the others to repair cars. The main reason is that they have already performed car repairs at the American Liaison Office in Beijing.
“The problem is not big. The 4AT gearbox does not shift gears when I step on the accelerator. In all likelihood, the gearbox oil pump is faulty or the clutch plate is worn. However, this car has only been used for 4 years, and I don’t think the mileage is actually the same. If it reaches 50,000, it is not driven too much, and the possibility of clutch plate wear is relatively low.”
“Then there may be a failure of the transmission control system, including failure of sensors, solenoid valves and other components, which may lead to failure. The shift signal is not transmitted smoothly or incorrectly, which affects the shift. This can be confirmed during the disassembly process. "
"The engine fault light of the car came on, and the engine also stalled abnormally. This I found. The initial judgment is that a sensor failure caused the ECU to cut off the oil for protection, causing the engine to stall.”
"As long as you find the sensor with the problem, it can be easily solved."
Jiang Hui quickly explained to Chen Chenxing the cause of the problem with the Crown car in front of him, and later he planned to let Chen Chenxing drive it too. , experience the feelings of these two failures for yourself.
Before the two of them could continue their discussion, Kato Hiroyuki came over with an envelope.
"Jiang Sang, I hope your skills are worth the repair costs."
Although Kato Hiroyuki still has no smile on his face, he is no longer grimacing.
It seems that these Japanese people have good emotional control skills, otherwise they would not be assigned to work in the embassy.
“Don’t worry, if it can’t be repaired, I won’t charge you a dollar.”
“Since I dare to collect half of the deposit first, I’m sure it can be repaired.”< br>
Jiang Hui did not open the envelope and count the money. He believed that Kato Hiroyuki would not do anything like this. Of course, just because you didn’t count the money in person doesn’t mean you won’t count it later.
Feeling the charm of Franklin is also a happy thing.
"Okay, hurry up and repair the car as soon as possible, and let me see your strength."
Obviously, Kato Hiroyuki was going to watch Jiang Hui repair the car on site.
For the sake of $1,600, Jiang Hui did not plan to drive him away this time.
Anyway, when it comes to car repairs, it is definitely not just that if you watch it from the side once, you will be able to repair it yourself the next time you encounter the same fault.
Not to mention encountering other failures.
Jiang Hui didn't waste any more nonsense and let Chen Chenxing get in the car and experience it for a few minutes. Then the two of them used a jack to jack up the Crown car and first removed the gearbox.
“The four-speed automatic transmission is an improvement on the three-speed automatic transmission. It has two types.”
“One is to convert the original three-speed transmission into The double-row planetary gear mechanism is added with a single-row planetary gear mechanism, and a three-row planetary gear mechanism is used to form a four-speed gearbox."
"The other is to change the double-row planetary gear mechanism and change the front and rear planets. The combination of the basic components and the addition of shift operating components make it a four-speed transmission 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 is doing the work next to him, and Jiang Hui is explaining, While he was deftly dismantling the gearbox housing.
Disassembling car parts is not difficult at all for Jiang Hui.
Soon, the internal structure of the gearbox appeared in front of the two people.
“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 the middle 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 does not move, and the ring gear is passive."
"When all moving parts are unrestrained, the transmission is in neutral."
Jiang Hui pointed out He carefully explained the working principle of 4AT to Chen Chenxing in real terms. This was a rare opportunity.
If you have never seen the real thing, even if you have information, it will be difficult to understand it.
But when it comes to understanding the real thing, 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 the single-row planetary gear mechanism can satisfy 3 There is a forward gear, so why does the 3AT automatic transmission need a double-row planetary gear mechanism?”
Chen Chenxing listened very carefully and asked if he didn’t understand.
Even though what he was dismantling now was a 4AT automatic transmission, he could still think of some problems with the 3AT.
“This is 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 characteristics are two The sun gear of the planet row is connected as a whole, called the front and rear sun gear assembly. "
"The planet carrier of the previous planet row and the ring gear of the latter planet row are connected as another whole, called the front planet. Carrier and rear ring gear assembly. ”
“The output shaft is usually connected to the front planetary carrier and rear ring gear assembly. ”
“In a single-row planetary gear mechanism, it can meet the needs of 3 forward gears. In this case, it is also designed as a double-row planetary gear mechanism, because it needs to take into account the manual 1st 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 intervene in the first and second gears."
Jiang Hui pointed to the planetary gear mechanism in front of him and gave it to Chen Chenxing bit by bit. Explain.
Next to him, Kato Hiroyuki was speechless when he saw Jiang Hui treating car repair as teaching.
However, he is also a graduate of an engineering university, and it can be generally heard that Jiang Hui has a very good understanding of the structure of the gearbox.
Otherwise, I wouldn’t dare to conduct on-site teaching in front of myself.
Precisely because he could feel Jiang Hui's strength, he stood aside and refrained from speaking.
“Remember what I just said about the cause of the problem of not shifting gears when you press the accelerator?”
“Let’s eliminate them one by one now.”
Took it apart. As for the gearbox, after some explanation, the fault must still be found.
Otherwise Kato Hiroyuki would not be at ease watching from the side, and Chen Chenxing would also be worried.
"First of all, let's look at the clutch plate. Many people think that models with automatic transmissions do not have clutches and only manual transmissions have them. This is obviously wrong."
"In fact, it not only has it, but also has it. There are many, but its clutches are inside the gearbox and we can't see it from the outside. "
"A simple four-speed automatic gearbox requires at least three sets of clutches, and a six-speed automatic gearbox requires at least three sets of clutches. At least five sets of clutches are required, and the more gears there are, the more clutches there are."
"The brakes inside the automatic transmission also use a mechanism similar to the clutch, and they are usually called clutches."
< br>“These clutches are combined or separated under the control of oil pressure to achieve gear switching.”
After talking about the main structure, Jiang Hui began to explain some details to Chen Chenxing based on troubleshooting.
“The clutch of the automatic transmission is soaked in the automatic transmission oil. Generally, it will not be burned out or excessively worn.”
“However, if the transmission takes a long time Overloading, coasting in neutral for a long time, using substandard transmission oil, etc. can also cause clutch burnout, slippage and excessive wear."
"A typical failure symptom of automatic transmission clutch slipping. It means that the stall speed of the gearbox is too high. For example, when shifting to D gear and pressing the brake pedal and accelerator pedal at the same time, the engine speed should not exceed 2,600 rpm. If the speed exceeds 3,000 rpm, it means the clutch is slipping. ”
“In addition, clutch slippage will also cause the car to be unable to accelerate”
Since we are leading apprentices, we definitely don’t just talk about any problems we encounter, but expand to more other cases based on the situation.
“Compared with repairing the engine, repairing the automatic transmission is actually more difficult.”
“If the clutch of the automatic transmission is excessively worn or slips, it will require deep disassembly of the transmission. It is an extremely technical job. Even in more than ten years, it is estimated that most repair shops will not have such technical strength."
When Jiang Hui said this, he deliberately looked up. Hiroyuki Kato.
He knew that this Japanese man had been listening to his explanation.
The other party doesn't trust me so much. After repairing the gearbox and engine, should I consider doing something to prevent this Crown car from having some faults in the future, and it will still be the kind of fault that only I can repair?
Although it is a bit unethical to do this, if the target vehicle is the Japanese Embassy's car, Jiang Hui will not have any psychological burden.
Of course, this fault must not be a vicious situation that others can detect, or that will cause the car to crash and kill people.
Otherwise, you will get yourself into a trap accidentally.
(End of this chapter)