Bai Hao was thinking about how to explain the origin of this prototype drawing.
Who would have thought that Wang Meilin directly told Bai Hao the answer: "Ninth Factory independently researches and develops. Although it is affected by some foreign technologies, we firmly follow the road of independent research and development. It will take... Let's see what we release by then.
version, just tell me how long it took."
Bai Hao came to his senses and said immediately: "Deputy Commander, you are wise."
How did you research this thing?
No need to tell anyone.
No one is qualified to ask how Bai Hao designed this thing.
Someone in the Xia Kingdom who is qualified to ask questions asked, and they had to answer with just one sentence:
This is a diesel engine independently developed by Factory No.9.
People outside the Xia Kingdom asked.
Well, keep it secret!
Wang Meilin's words not only told Bai Hao how to answer the question, but also told Bai Hao that if he wanted to ask too many questions, he would stop him.
Because Wang Meilin had a vague feeling.
A feeling that I probably understand in my heart, but can't express it.
At this time, Wang Meilin's tone became serious: "Give me a solid background. How long will it take for the machine to be practical and ready for factory production?"
Bai Hao thought for a while and replied: "If it is really used for farming, it can be done today... For the rest of the uses, it will take at least a year and a half to work on optimizing and improving the details. Among them, there are also major research projects
Our Ninth Factory held meetings and discussed in depth on dozens of individual items."
"Tell me about it, I probably understand it." Wang Meilin is also a veteran college student and has been in the Ministry of Five Industries for many years. He is confident that he knows a little bit about it.
Bai Hao drew a simple structural diagram on the ground: "The core technology of a diesel engine is straightforward, just four words: intake, compression, deflagration, and exhaust. We have considered using electronic control, so we need electronic control.
High voltage, common rail, and many sensors, and this does not include the accuracy of the machine itself."
"Also, why is this machine able to reach more than 1,500 horsepower, and the same volume can be manufactured by others? One of the core technologies is high pressure. We have dismantled five pairs of wheels, and the injection pressure is up to 50 Pa.
, and our machine can reach a maximum of close to 200 Pa.”
Wang Meilin nodded. It sounded simple, but in fact, it was so difficult that no factory in the entire Xia Kingdom could do it.
High pressure, good natural atomization, good atomization, sufficient combustion, sufficient power and fuel economy.
Bai Hao continued: "Common rail, there is not one injector, but the fuel supply pipe cannot be equipped with one injector for each injector, so precise calculations are required, so we choose electronic control, each injector
Both can spray oil of the same quality and pressure, and the operation will be smooth and the power will be strong."
Wang Meilin gently hit her head twice.
This seems to be one of the basic principles of diesel engines, but why no one can think of it for so many years.
Maybe someone has thought of it, but why has no unit made efforts in this area?
Bai Hao continued to speak from the side: "Vice Chief Wang, it seems simple. There are several pairs of coupling parts outside a nozzle, which can withstand a ton of upward pressure. It must also move flexibly and cannot leak oil. The gap is only two wires. My dad
He is also an eighth-level fitter, but eight out of ten pieces he processes are unqualified."
Wang Meilin wanted to ask Bai Hao how difficult this was.
But he didn't ask the question when it came to his lips. He was going to concentrate on trying to see if there was any way to overcome these difficulties.
Besides, with the five pairs of wheels approaching, Miao Fenglin had a very good idea, and the theoretical test was no problem. He then personally made some small changes to a set of fuel injectors.
Jiong Shuisheng took a few steps back, lit a cigarette, and looked up at the sky at a 45-degree angle.
He didn't look, he listened.
Li Xuesheng, who was in the distance, also walked over. After taking a long look, he stayed away, then folded his arms and watched from a distance.
After a few minutes, start.
Immediately afterwards, there was a loud noise, black smoke billowed from the exhaust pipe, and the diesel engine began to vibrate. This frightened everyone and they quickly turned off the engine.
Miao Fenglin put on gloves and immediately started to dismantle the machine no matter how hot it was.
After dismantling it, I found that the fuel injector and the entire cylinder were full of oil stains and carbon marks caused by insufficient combustion. It had only been started for a few seconds, and it turned out to be like this.
Why is this happening?
Miao Fenglin suddenly turned around and looked at Jiong Shuisheng who had retreated into the distance.
Someone said: "Did he wait on purpose..."
"Shut up!" Miao Fenglin roared: "Jiong Shuisheng is a bad mouth, but he is not a villain. If you can't figure it out, just think about it. If you can't figure it out, get out!"
Li Xuesheng smiled. He knew that Miao Fenglin had found the key point, but he was still a little short of it.
Turning around to the table, he picked up the drawing and rolled it up. He still hugged his arms together, clamped the drawing in the crook of his arm, and stood in the same position as before and looked at it.
What reason, what reason!
Miao Fenglin got into the machine cabin. He looked at the machine inch by inch, studying it centimeter by centimeter. When he saw the circuit board, he jumped out and scanned all the people behind him.
Here are gathered the backbone of almost the top diesel engine research institute under the Ministry of Five Industries of Xia State.
Finally, Miao Fenglin saw a person and reached out to grab him: "Quick, look what is this?"
That person was an electronic control expert. Once he got in, he understood: "Control, look at the wiring and layout. It controls each cylinder. It should be more than just this one, there are others."
Miao Fenglin stood on the five pairs of wheels: "Lao Jiong, drawings."
Jiong Shuisheng pointed to Li Xuesheng's side, and saw Li Xuesheng standing there holding the drawing.
When Miao Fenglin ran over, two students of Li Xuesheng came over carrying a table.
He is an expert.
After Miao Fenglin studied it carefully for five minutes, he hit his head on the table: "I am just a pig, a stupid pig."
His method works.
But it destroys the balance between all the injectors. In a word, if you want to change them, change them all, not just one cylinder. How could he not understand this simple truth, and just look at the water and dismantle one injector?
So only one posterior plug was changed.
That's just a few small changes.
But it destroys the overall balance.
Manually, and then have an expert adjust the control circuit on the microcontroller.
After half an hour of fussing, it finally started.
Jiong Shuisheng listened with his eyes closed.
At their level, you can hear too many things just by listening to the sound of a diesel engine running.
A minute later, Jiong Shuisheng shook his head.
At this time, Bai Hao and Wang Meilin also walked down. Bai Hao asked, "Why, I feel bad."
"No, it runs more smoothly, but the power is obviously reduced. I estimate that he has lost at least 20 to 30 horsepower. I can't say that he is wrong. After he changed it like this, he didn't pick up the oil as much. Plus
A set of improved fuel filtration can probably be made with any kind of oil. What I pursue is perfection, and what he pursues is practicality. Now that I think about it, he may be right."