Chapter 1378
The Iron Alliance and the Iron Group are here, trying to steal our skills, huh? Do you
Considering that people from the Iron Group and the Iron Alliance were coming to observe, Li Aiguo had been busy until after 10 p.m. lately before returning home.
As soon as Li Aiguo stepped into the Intermediate People's Court, he felt his feet go weak, as if he had stepped on something.
Immediately afterward, an annoyed voice came from beneath his feet: "Who is it! Are you blind? Can't you see I'm sleeping here?!"
Li Aiguo was startled, but when he looked closely by the moonlight, he burst out laughing.
"Hey, isn't this Jie Cheng? Why aren't you sleeping in your room in the middle of the night?"
"It's Brother Aiguo back." Yan Jiecheng yawned and pointed inside the house.
"Don't even mention it! I finally managed to save up for two whole months by scrimping and saving, and then I bought an electric fan."
But to my dismay, my dad absolutely refused to let me use it, saying it was a waste of electricity!
"It's so hot inside, like a sauna. I'm thinking of doing what Wang Gangzhu and the others did, just sleeping outside to cool off."
It's getting hotter and hotter in Beijing in August. These days, most houses are tiled, and the interiors are like steam rooms.
In the Weizhuang Commune area.
Many young men would sprinkle some well water on the open threshing ground to cool it down in the evening, then lay out a tattered straw mat, put up an old mosquito net, and sleep shirtless.
However, this situation is rare in the capital.
"Go back to sleep." Li Aiguo was already used to this, his lips twitched, and he quickly went home.
Chen Xueru had just finished washing up and was sitting on the bed enjoying the fan when she saw Li Aiguo return. She stood up, poured him some cold water, and took a wet towel.
Li Aiguo took the towel, wiped his face haphazardly, and quickly washed up.
He was only wearing a pair of shorts and lay sprawled out on the soft bed.
"Brother Aiguo, you seem to be quite busy lately." Chen Xueru felt that Li Aiguo had been leaving early and returning late these days, and she wondered what he was busy with.
The news of the Iron Group and Iron Alliance's visit has not yet been announced in China, so Li Aiguo naturally wouldn't leak it.
"Ugh, the project's hit a critical stage lately, so I've got a lot of work to do," Li Aiguo casually replied.
Li Aiguo lit a cigarette and asked, "By the way, I haven't been able to take care of things at home these past few days. Anything new?"
"You say it's nothing, but actually there's good news. The clothes my dad and I designed have been shipped to the port city, and they're supposedly selling very well."
Chen Xueru seemed quite happy, nestled against the rough-looking man's chest.
A few months ago, Chen Xueru's second garment design went into mass production and was delivered to Hextech through the textile bureau.
Yang Jizong had mentioned it once, but Li Aiguo had been so busy lately that he had completely forgotten about it.
"According to the leaders of the Textile Bureau, they also plan to export this batch of clothing to the European and American markets next."
I just don't know if they'll appreciate our traditional clothing over there.
At this point, Chen Xueru frowned slightly, looking somewhat worried.
"Don't worry, it'll definitely sell like hotcakes." Li Aiguo wasn't trying to comfort Chen Xueru.
The clothing designed by the Chen family father and daughter retains the classical charm of traditional clothing while incorporating modern aesthetic tailoring.
Overseas Chinese compatriots and overseas Chinese will definitely love this kind of high-end clothing that is full of hometown flavor.
There's no need to worry about sales.
Hearing her husband's affirmation, Chen Xueru finally felt relieved.
She shifted to a more comfortable position and leaned against Li Aiguo's chest, then started gossiping about the trivial matters in the courtyard.
"He Yushui received an Outstanding Academic Award at the university last month and won a scholarship. She bought a lot of snacks for Aunt Liu."
"Qin Huairu seemed to be harassed in the workshop, and the women's federation of the steel rolling mill stepped in and dealt with those workers."
"Nothing much is happening in the compound, except that Yi Zhonghai has been coming back late at night lately, as if he's hiding from Jia Zhangshi."
Before Chen Xueru could finish speaking, a sudden commotion arose outside.
"Yan Jiecheng! Why aren't you sleeping in the middle of the night? What are you doing pretending to be dead? Sleeping on the road right in front of the courtyard, what kind of behavior is that!"
"Oh ho ho, who do we have here? It's just an old man!"
What's wrong? You came back so late today, didn't Jia Zhangshi catch you on the way?
You still have time to meddle in my business?
I think you'd better put some thought into how to deal with Jia Zhangshi later!
"You...you little brat, you've gone too far!"
Next came Yi Zhonghai's heavy breathing and the sound of his footsteps as he fled in panic.
Li Aiguo had absolutely no interest in the petty affair between Yi Zhonghai and Jia Zhangshi.
With the soft, fragrant body in his arms, he had no time to care about the troubles outside.
Two blushes instantly rose on Chen Xueru's fair cheeks, and she let out a charming hum.
"Patriotic Brother~"
As night deepened, the temperature inside seemed a few degrees higher than outside.
In the room next door, separated by only one wall.
Xu Damao lay stiffly on the bed, listening to the faint sounds coming from next door, unable to fall asleep any longer.
He turned over irritably, pulled the blanket over his head, and felt a surge of envy, jealousy, and resentment...
He was helpless, worried about provoking Liu Lan.
"Looks like I'll have to ask my patriotic brother to buy some medicinal wine."
Time passed by day by day amidst our busy lives.
When I went to work on Monday,
Li Aiguo picked up the blueprints for the air conditioner.
The blueprints are almost finished. Everything else is relatively easy, but the most difficult part is the air conditioner compressor.
It's not that it's impossible to manufacture them at all, but with the current level of technology, the compressors produced are far from meeting the standards in terms of durability and stability during continuous operation.
To solve this problem, Li Aiguo has already used a large number of copper pipes in his design.
Just then, the phone rang. It was Section Chief Xing calling.
"Patriotism! I just received an urgent notification from the foreign affairs department and the Ministry of Railways that the joint inspection team from the Railway Group and the Railway Alliance has just arrived at Nanyuan Airport by special plane!"
"I estimate their convoy will arrive at our Changxindian Locomotive Factory soon!"
When he said this, Section Chief Xing was also a little excited. You see, the Railway Group and the Railway Alliance are the highest railway authorities in their respective fields, and now they have come together.
“Great idea! Section Chief, this is quite a scene. How about we go to the locomotive factory and meet them?” Li Aiguo invited with a smile.
"This, this isn't appropriate. This has nothing to do with me."
"Section Chief, you're wrong. Without the support of the locomotive depot, we wouldn't be able to build electric trains."
Section Chief Xing felt a pang of regret. Li Aiguo, that kid, never sought credit; whatever achievements he made, he always thought of everyone else.
"Alright, then I'll take advantage of you this once." Section Chief Xing was also very interested in these bigwigs in the world of railways.
When Li Aiguo drove his large SUV with Section Chief Xing to the Changxindian Locomotive Factory, the factory was spotless and banners were hung on the walls.
"A warm welcome to the expert group from the Iron Group and the Iron Alliance for visiting and inspecting the Changxindian Locomotive Factory!"
Every worker we encountered along the way wore blue overalls that had been washed until they were almost white, clearly indicating that they had been washed overnight.
Everyone's face was filled with pride and anticipation.
The starting station of the test loop.
The director of Changxindian Locomotive Factory, other factory leaders, and Chief Engineer Liao were standing in front of the high-speed Dongfang-type electric train, watching the engineers conduct inspections.
Seeing Li Aiguo approach, Chief Engineer Liao greeted him with a smile: "Aiguo, don't worry, we've checked it several times already, this test definitely won't fail."
"I have complete confidence in our electric trains, it's just that some people..."
Li Aiguo stopped mid-sentence and boarded the electric train to begin preparations for the test.
While Li Aiguo was busy, members of the Iron Group and the Iron Alliance had already boarded a bus and headed towards the Changxindian Locomotive Factory.
Through the car window.
Looking at the buildings on both sides of the road, and the trucks and cars that occasionally drive by.
The group of top experts from around the world all looked surprised.
"It's different from what I saw in the newspaper."
"Yes, the newspaper said this place is particularly dilapidated."
"Hmph, those newspaper reporters are a bunch of liars! Have you heard? The industrial and economic development here has been incredibly fast in recent years."
A representative from the French, sporting a large beard, pointed out the window.
As the only member of the Iron Alliance to establish relations with this side and carry out in-depth trade cooperation.
He now has a sense of superiority, as if he is the only one who is sober while everyone else is drunk.
He felt a little contempt for these ignorant frogs in a well.
The atmosphere in the carriage was very lively, with everyone enthusiastically discussing their experiences along the way.
However, in the corner of the last row of the carriage, there was a man whose face looked as if he had just eaten a dead fly.
He is, of course, Kurozuma.
Beside him were Professor Yamamoto and his assistant from Kinki Motor Corporation; the three of them represented Kinki Motor Corporation.
Professor Yamamoto sighed, "Alas... I never came here in person back then."
But I've also heard from many colleagues about the devastation this land once suffered.
I never imagined that they could develop at such an astonishing speed in just over ten years.
This is simply a miracle, absolutely amazing!
"Professor Yamamoto! Please be mindful of your status and your words at all times!"
Don't boost others' morale and diminish ours!
Kuronuma said coldly.
Professor Yamamoto was startled by his sudden rebuke and opened his mouth.
He seemed to want to say something in rebuttal, but in the end he helplessly shut his mouth.
In fact, Professor Yamamoto, being a pure technical scholar, was unaware of Kuronuma's true identity.
But he's not stupid either.
One could vaguely guess that this guy who appeared out of nowhere must be carrying some kind of secret mission.
What made him even more uneasy was that the president of Kinki Motors had given him stern instructions before he set off.
Once you get there, all actions must be dictated by Kuronuma, and you must unconditionally obey Kuronuma's commands.
action?
Professor Yamamoto felt increasingly uneasy the more he thought about it.
They were just a technical delegation visiting the electric train.
Does it require any shady "actions"?
Thinking of this, Professor Yamamoto's heart skipped a beat.
"It seems that this trip to Changxindian will definitely not be as smooth as it appears on the surface..."
After half an hour.
The convoy slowly came to a stop in front of the test loop platform at Changxindian Locomotive Factory.
The heads of the delegations from the two major camps, Iron Alliance and Iron Group, were the first to step off the bus.
"Welcome, welcome! A warm welcome to all our distinguished guests who have traveled from afar to our Changxindian Locomotive Factory!"
The director of Changxindian Locomotive Factory greeted them with a big smile and shook hands with the two regimental commanders.
"This must be the new electric train. It's really beautiful, Louis."
The elderly man with gray hair who spoke was none other than Bernard, the leader of the Iron Alliance.
Although he was a member of the Dutch family, he had worked for a long time in a high-level railway research institution in France in his early years.
He and Louis were old friends of many years and had a very good relationship.
Upon hearing this, Louis burst into hearty laughter and strode forward to give Bernard a warm hug. "How was it, my old friend? Wasn't what I told you on the long-distance telegram a complete exaggeration?"
This electric train, named 'Extreme Speed East,' is definitely the future direction of our railway transportation development!
"Hahaha, if you old man can pick one out at a glance, it must be something special!"
Bernard chuckled and patted Louis on the back, then glanced around the platform and asked somewhat impatiently.
"By the way, what about Comrade Li Aiguo, who created this miracle?"
Where is he? I can't wait to meet this genius designer!
"He's in the driver's seat right now, doing the final adjustments before the actual vehicle test. Wait a moment, I'll go call him down," Louis said, starting to walk towards the front of the car.
"No need, let's go take a look."
Before Bernard could speak, a thin, middle-aged man stepped forward and said...
Who else could it be but Kuronuma?
Although Bernard hadn't had much contact with Black Swamp, he sensed something was off about the man along the way, but he couldn't quite put his finger on it.
However, Kuronuma still held the title of an official member of the delegation.
In this diplomatic setting, Bernard couldn't very well directly embarrass him.
Bernard turned his head and looked at the director of Changxindian Locomotive Factory with a questioning gaze.
"Mr. Factory Manager, may we go up and take a look at the driver's cab now?"
"May I?"
"Of course, please follow me!" The locomotive factory director gestured "please" and personally led a few people up the boarding stairs to the locomotive of the electric train.
Upon entering the driver's seat.
Bernard spotted the young man standing in front of the control panel, adjusting various instruments.
With just one glance, Bernard knew that this was Li Aiguo.
He had seen Li Aiguo's photo in the French newspaper.
"You must be Comrade Li Aiguo? Truly a young hero! Could you please introduce us old folks to him?"
Li Aiguo then noticed the group of people, and after scanning their faces, he nodded.
"Mr. Bernard, you flatter me. Of course, it is my honor to introduce this to you experts."
"Look, this is the traction handle that controls the speed of the electric train, and it's also the control device for the whole train."
Li Aiguo stepped aside to give everyone a clear view of the driver's cab's interior layout.
"Push the handle forward to accelerate in stages, pull it back to decelerate in stages, return it to the center for neutral, and the last position is the emergency braking position."
The round dial next to it is a voltage meter, which monitors the 25kV power frequency supply voltage of the overhead contact line in real time.
Whether voltage fluctuations are within the safe threshold can be determined at a glance.
The ammeter below corresponds to the traction main circuit current and is a core parameter for determining the locomotive's power output.
Li Aiguo explained things in a simple and easy-to-understand way, at a moderate pace, and used every professional term appropriately.
Inside the driver's cab, all the experts listened intently.
Not a single person showed the slightest impatience; in fact, several people even took out their notebooks and began to write furiously down notes.
The reason is actually very simple.
The operational logic and instrument layout that Li Aiguo is talking about now will be considered common sense in the industry by people decades later.
However! In the 1960s, when electric locomotives were just starting out, this design concept that perfectly integrated ergonomics into mechanical control was a first!
"My God, this design is brilliant. It's not only safe, but also very convenient to use."
"Simplifying complexity! Comrade Li Aiguo is indeed a once-in-a-century genius designer, able to consider even such minute details so thoroughly!"
"It's unbelievable, is this really the first prototype car...?"
Listening to the heartfelt praises around me, and looking at the instruments and joysticks on the control panel.
Both Bernard of the Iron Alliance and the members of the Iron Group had the same absurd illusion.
This high-speed Eastern-type electric train doesn't look like a train that has just been developed.
It's more like a perfect work that has been running on the tracks for over a decade and has been optimized hundreds or thousands of times!
Especially Bernard.
As the vice chairman of the Railway Alliance, he devoted his life to promoting railway electrification.
His research and understanding of electric train-related technologies far surpassed that of most people present.
That is why, at this moment, his heart is filled with turbulent waves.
He never dreamed that Li Aiguo could make the core control system of electric trains so mature!
This technological gap means they are at least ten years ahead!
And on the side.
Hearing these comments, Kuronuma gritted his teeth, his jealousy driving him almost insane.
Such a great electric train should have been built by them, not by these stupid guys.
Just as Li Aiguo's introduction came to an end, before the next item could be started...
Kuronuma suddenly stepped forward and asked a question in heavily accented Mandarin, his tone clearly deliberately difficult.
"Comrade Li, basic equipment introductions are meaningless; they're just common industry knowledge."
"Since you are the chief designer of this locomotive, I will ask you a crucial technical question in front of everyone today!"
Kuronuma unleashed his trump card:
"As far as I know, your locomotive uses a variable frequency AC input, which is rectified in four quadrants to obtain the intermediate DC bus voltage."
"How does your self-developed VVF traction inverter suppress torque pulsation and DC bus low-frequency ripple coupling interference under low-speed, high-torque locomotive starting conditions?"
As soon as he finished speaking, the driver's cab fell silent.
The layman looks at the excitement and the insider looks at the doorway.
Low-speed torque pulsation, DC ripple coupling, and SVPWM dead-time correction are the technical challenges that pose the bottlenecks in the commissioning of VVF electric locomotives.
The Shinkansen also wanted to adopt VVF technology back then, but because these problems could not be solved for a long time, other solutions were used instead.
Bernard and Louis's expressions changed slightly, and they instantly realized that Black Swamp was deliberately making things difficult for them.
This kind of solution, which involves the underlying control logic, is a secret of any locomotive manufacturer!
Who would be foolish enough to reveal such a core secret in public during a visit?
The director of Changxindian Locomotive Factory and Chief Engineer Liao, who were standing behind Li Aiguo, were even more shocked and broke out in a cold sweat.
They glared angrily at Kurozuma, but didn't know how to break the deadlock.
If I don't answer, I'll inevitably be ridiculed for being all show and no substance.
If you answer that, the core technology will be leaked!
All eyes were on Li Aiguo.
Available in the next second.
To everyone's surprise.
Li Aiguo merely raised his eyes slightly, his expression calm, and spoke:
"Regarding the torque pulsation generated under low-speed, high-torque conditions, and the coupling interference with the 100Hz low-frequency ripple of the DC bus."
“We abandoned the traditional single-path suppression algorithm and adopted a brand-new ‘dual closed-loop linkage suppression strategy’.”
"Regarding the issue you mentioned about the SVPWM dead-zone distortion correction problem that is very likely to occur in the constant torque range."
"We also abandoned the traditional fixed compensation algorithm."
We introduced a more flexible 'frequency segmented dynamic dead-time compensation strategy' into the control system.
Finally, a cold smile curled at the corner of Li Aiguo's mouth.
"Of course, in order to avoid the risk of system downtime caused by accidental overcurrent triggering of the system protection mechanism during the correction and compensation process."
We added an independent 'current change rate limiting module' as a final safety measure within the underlying control program code.
"Professor Kuronuma, did what I just said answer your questions?"
As the last word fell.
The driver's cab fell into an even more deathly silence once again.
If the occasion hadn't been inappropriate, Chief Engineer Liao would almost have burst into laughter and applauded on the spot!
Absolutely!
Absolutely amazing!
Li Aiguo's answer appeared very professional and provided a satisfactory response to the question.
Any true expert can figure it out immediately after a little thought.
Every answer Li Aiguo gave was superficial and incomplete!
He generously explained the principles behind solving the technical difficulties of VVF, but he didn't mention the real core technology, let alone how it was implemented.
What is this like?
This is similar to how everyone knows that the principle behind making an atomic bomb is nuclear fission, and the formula is written in textbooks.
However, looking around the world, the number of people who can actually build an atomic bomb based on this principle can be counted on one hand!
Furthermore, all of these concepts proposed by Li Aiguo were ahead of their time.
Apart from himself, no one present dared to guarantee that these theories were 100% feasible in practice.
No one can be sure whether Li Aiguo secretly mixed in some flawed ideas with his own.
Kuronuma wanted to learn from them, didn't he?
You, Kuronuma, are just shameless and trying to steal my skills in public, aren't you?
Sure!
Now I, Li Aiguo, will slap the answer right in your face and ask you just one question:
Even if I dared to teach you, would you dare to copy it exactly?!
Bernard's eyes flashed with intense shock and admiration. This young man was not only highly skilled, but also very quick-witted.
In contrast, look at Kurozuma, who stirred up the trouble.
His face was like a dye vat, alternating between green and white, almost like a traffic light.
"Cough cough... all done!"
Seeing that the atmosphere was a bit awkward, Bernard finally stepped in to smooth things over.
He glanced coldly at Kuronuma and warned sternly, "Professor Kuronuma!"
Before we set off, we had repeatedly emphasized that no questions involving specific technical details were to be asked during the visit, so as to avoid any misunderstandings!
We hope you will abide by the rules of our inspection team and that this will not happen again!
"Hai!" Kuronuma reluctantly stepped aside.
Li Aiguo simply gave Kuronuma a deep look and didn't say anything more.
He then led the members of the Iron Alliance and Iron Group on a tour of the driver's cab and then the train carriages.
The seats can be reclined, and the curtains cover the windows.
There were also neon lights displaying the speed on the carriage doors; every design element drew gasps of amazement.
Bernard, however, stared at a hole in the ceiling of the carriage: "Comrade Patriot, that should be reserved, right? What are you planning to put there?"
"Air conditioning," Li Aiguo casually uttered.
"Install air conditioning in the train?" Bernard's eyes lit up instantly. The train in Xiao Ou's family is not equipped with air conditioning and still uses a fan. Every time they travel, they are covered in sweat.
"You've already developed a car air conditioning system?"
"It's under study," Li Aiguo said, offering no guarantee.
"God is my witness! If you can really develop that car air conditioner, please, please, please let us know immediately!" Bernard was completely convinced.
Even if the Iron Alliance cannot fully import this electric train.
But we absolutely must buy back the technology for this car air conditioning system!
In an instant, almost all the members of the Iron Alliance and Iron Group surrounded Li Aiguo, bombarding him with questions about the car's air conditioning.
Looking at Li Aiguo, who was surrounded by everyone like a star,
Kurozumi, who had been squeezed into a corner, calmed down and was no longer as impatient as before.
Go ahead and brag, you bunch of idiots!
In the afternoon, when the actual extreme testing on the loop began,
If the test fails, he will utterly humiliate Li Aiguo.
(End of this chapter)