Bai Hao was thinking about how to explain the source of this prototype drawing.

Who thinks, Wang Meilin directly told Bai Hao the answer: "Independent research and development of the ninth factory, although it is affected by some foreign technologies, we firmly take the road of independent research and development." Diachronic...... When the time comes, let's see what we release the full version of that big guy, and you can say how long it will last. ”

Bai Hao reacted and immediately said, "Deputy Chief, you are wise. ”

How to research out this thing.

No need to tell anyone.

No one is qualified to ask, how did Bai Hao design this thing.

The people in Xia Guoguo who are qualified to ask have asked, and if they want to answer, they will just say one sentence:

This is a diesel engine independently developed by the ninth factory.

Someone outside the Xia Kingdom asked.

Well, keep it secret!

Wang Meilin's words not only told Bai Hao how to answer, but also told Bai Hao that whoever wants to ask too much has to block it for Bai Hao.

Because Wang Meilin vaguely had a feeling in it.

A feeling that I know in my heart, but I can't say it.

At this time, Wang Meilin's tone became serious: "You give me a real bottom, how long will it take for the machine to be practical and produced in the factory?" ”

Bai Hao thought for a while and replied, "If it is really used for farming, it can be used today." For the rest of the uses, it will take at least a year and a half to work hard to optimize and improve the details. Among them, there are dozens of individual items in the sub-study, and we have held a meeting in the ninth factory and discussed it in depth. ”

"Tell me, I probably understand." Wang Meilin is also a veteran college student, and has been in the Fifth Engineering Department for many years, so he is confident that he knows some skin.

Bai Hao drew a simple structural diagram on the ground: "The core technology of diesel engine is straightforward, which is four words: air intake, compression, deflagration, and exhaust. We're already thinking about electronic control, so we need electronic control, high voltage, common rail, and a lot of sensors, not including the accuracy of the machine itself. ”

"Also, why can this machine reach more than 1,500 horsepower, and let someone else build the same volume, not necessarily. One of the core technologies is high pressure, and we've dismantled five pairs of wheels, and the injection pressure is up to 50 Pa, and ours can go up to 200 Pa. ”

Wang Meilin nodded, it sounds simple, but in fact, this is the case, it is so difficult that no factory in the whole Xia Kingdom can do it.

High pressure, good natural atomization, good atomization and full combustion, sufficient power and fuel saving.

Bai Hao continued: "Common rail, the fuel injector is not one, but the fuel supply pipe cannot be equipped with one for each fuel injector, so there must be accurate calculations, so we choose electronic control, each fuel injector can spray the same quality, the same pressure of oil, the operation will be smooth, the power will be strong." ”

Wang Meilin gently slapped her head twice.

This seems to be one of the basic principles of diesel engines, but why after so many years, no one can think of it.

Some people may have thought of it, but why didn't the unit work on it.

Bai Hao continued to say: "Deputy Chief Wang, it seems simple, several pairs of couplings outside a nozzle can withstand a ton of upward pressure, and they must move flexibly, and they cannot leak oil, and the gap is only two wires. My dad was also an eighth-level fitter, but eight out of ten pieces he processed were not qualified. ”

Wang Meilin wanted to ask Bai Hao how difficult this was.

But he didn't ask when the words came to his lips, and he was ready to concentrate on giving it a try to see if there was a way to break through these difficulties.

Besides, before the five pairs of wheels approached, Miao Fenglin had a very good idea, and the theoretical test was no problem, and he personally made some small changes to a set of fuel injectors.

Jiong Shuisheng took a few steps back and lit a cigarette, looking up at the sky at a forty-five degree angle.

He didn't look, he used to hear.

Li Xuesheng in the distance also walked over, glanced at it from a distance, stayed away, and then crossed his arms and watched from afar.

After a few minutes, launch.

Immediately afterwards, there was a chaotic sound of porphyria, black smoke billowing from the exhaust pipe, and the diesel engine began to shake, which frightened everyone, and quickly turned off the fire.

Miao Fenglin put on gloves, and no matter how hot the machine was, he immediately went to dismantle it.

When I removed it, I saw that the fuel injector and the entire cylinder were full of insufficient combustion, resulting in oil stains and carbon marks. It's only been a few seconds since it started, and it turned out to be like this.

Why is this happening.

Miao Fenglin turned around violently to look at Jiong Shuisheng, who had retreated into the distance.

Someone said, "Did he deliberately wait for ......?"

"Shut up!" Miao Fenglin roared angrily: "Jiong Shuisheng is a stinky mouth, but he is not a villain. If you can't figure it out, think about it, and if you don't understand it, get out! ”

Li Xuesheng smiled, he knew that Miao Fenglin had found the key point, but it was still a little close.

Turned to the table, picked up the drawings and rolled them up, still holding their arms together, clamping the drawings in the crook of their arms, and standing in the position just now to look at it.

What a reason, what a reason!

Miao Fenglin's whole person got into the machine compartment, and he looked at the machine inch by inch, studying centimeter by centimeter. When he saw the circuit board, he jumped out and swept his gaze over everyone behind him.

Here is the backbone of almost the top diesel engine research institute under the Fifth Ministry of Industry of Xia Guo.

Finally, Miao Fenglin saw a person, stretched out his hand and pulled it over: "Quick, let's see what this is?" ”

That is an electronic control expert, and when he got in, he understood: "Control, look at the line and layout is to control each cylinder, there should be more than this, there are others." ”

Miao Fenglin stood on five pairs of wheels: "Lao Jiong, drawings." ”

Jiong Shuisheng pointed to Li Xuesheng's side, but saw Li Xuesheng standing there holding the drawings.

When Miao Fenglin ran over, two of Li Xuesheng's students came over carrying a table.

It's a connoisseur.

Miao Fenglin studied carefully for five minutes, then smashed his head on the table: "I'm just a pig, stupid pig." ”

His approach worked.

But it destroys the balance between all the fuel injectors, in a word, if you want to change it, you can change all of it, you can't change one cylinder. How could he not understand this simple truth, just to see that Jiong Shuisheng dismantled a fuel injector, so only one of the rear embolics was changed.

That's just a few minor changes.

But it upsets the balance of the whole.

Manually move, and then there are insiders to adjust the control circuit on the microcontroller.

After half an hour of tossing, it finally started.

Jiong Shuisheng listened with his eyes closed.

At their level, there are so many things that can be heard by listening to the sound of diesel engines running.

A minute later, Jiong Shuisheng shook his head.

At this time, Bai Hao and Wang Meilin also walked down, and Bai Hao asked, "What, it doesn't feel good." ”

"No, it ran more smoothly, but the power was clearly feeling down, and I guess I lost at least twenty or thirty horsepower. I can't say that he is at fault, after he changed it like this, he didn't pick oil much, and with a set of improved fuel filtration, it is estimated that any oil can be made. What I pursue is the ultimate, the practicality he pursues. Now that I think about it, he might have been right. ”