I, Zhu Youjian: the first prodigal son of the Ming Dynasty

Chapter 224 Two Problems
After a cup of tea, several well-dressed women carried two large boxes and walked quickly into the cabin.

Bang!
Bang!
The boxes are one big and one small, and they seem to be quite heavy, which makes the idiot emperor even more puzzled: "Aren't two great scientists, Xu Guangqi and Song Yingxing, working on generators..."

"Young master, do you want to open it yourself?"

Several well-dressed women bowed, turned around and walked out of the cabin, and Miss Hongliu said with a smile: "Master Xu Guangqi sent a secret letter, saying that the invention of these two objects was mainly inspired by the young master.

Do you want me to do it, or do you want to open it yourself? "

"I like to unpack the courier the most, so I should come to unpack it myself," Zhu Youjian rubbed his hands and said with a smile, "I'm afraid that a big horse monkey will come out of it, so don't be scared."

Miss Hongliu let out a coquettish snort, but didn't respond.

Zhu Youjian is very bad, and often recites some unserious jingles, such as "My daughter is sad, a big horse monkey emerges from the embroidery room; my daughter is happy, a chicken feather is poked in..."

Shameless.

Zhu Youjian walked slowly to the two wooden boxes, hesitated for a moment, and stretched out his hand to open the big box.

"What is this stuff?"

Zhu Youjian was stunned.

A large iron frame, with four special steel pipes fixed on it, the structure inside cannot be seen clearly, and two thin copper pipes are connected outside, connected to the bottom of a square box;
In addition, there are two pipes that look like chimneys, and several sets of crankshaft connecting rods...

……

Zhu Youjian squatted in front of this 'steel monster', and after a careful inspection, he felt a little dazed.

"This thing looks like a steam engine, but it doesn't look like..."

The idiot emperor, who knew little about machinery, turned his head to look at Miss Hongliu, and said with a smile, "Come on, show me the use of this big iron dog."

Miss Hongliu waved her hands again and again, and said with a smile: "I don't dare to move, Master Xu's secret letter calls it a petroleum machine.

As for what it's used for, I really don't know. "

Oil machine?
Zhu Youjian raised his brows and was stunned for a while before he burst out laughing: "Petroleum machine, what a petroleum machine, Xu Guangqi and Song Yingxing really came up with a new thing?
However, this so-called petroleum machine..."

He squatted down, examined it carefully, and nodded slightly.

Immediately, he shook his head again.

"Strictly speaking, this thing should be called a kerosene engine, or a diesel engine. Its working principle is to use an ignition device to ignite the spray particles of kerosene or diesel, and then a huge burst of energy will push the piston in the cylinder..."

The two scientists Xu Guangqi and Song Yingxing were not present, and the idiot emperor finally had the qualifications to pretend.

He talked eloquently for a while, true and false, right and wrong, anyway, he introduced the working principle of the diesel engine in a serious manner based on the memory fragments from his previous life.

Sure enough, Miss Hongliu's eyes widened, revealing a strange light.

"My lord, you are simply not human!"

"No, I mean, you are simply not normal!"

"Uh, I mean... why are you so inhuman?"

Zhu Youjian: "..."

The idiot emperor smiled triumphantly: "Okay, okay, I only know a little bit of scientific knowledge, what's the point.

What a joke, haha!
However, this diesel engine...or kerosene engine, there are still two things missing. "

"What two things are missing?" Miss Hongliu asked with admiration.

In her eyes, the idiot emperor is like an image of a master, and she can't help but want to hug her...

……

"One is the ignition device of the fuel injector, and the other is the cooling system of the water tank." Zhu Youjian really knows these two things, "the ignition device of the fuel injector must be closely consistent with the piston in the cylinder;
Secondly, during the high-speed movement of the engine block, a lot of heat will be generated, and it must be cooled and dissipated...

Well, that's about it. "

After pretending to be coercive for a while, Zhu Youjian felt that it was boring, so he stopped talking.

"There is only a machine, no fuel, this thing is useless."

"Fuel? How many barrels did Master Xu Guangqi send?"

Soon, Miss Hongliu sent an order for four well-dressed women to bring in a large iron bucket, which was reinforced with wood, iron bones, and hemp rope.

"It's diesel."

The moment the big iron drum was brought in, a strong pungent smell permeated the air, Zhu Youjian only took a few sniffs, and then smiled with certainty: "This is diesel oil extracted from petroleum.

After two years, our Daming's technological level has developed, and chemical fertilizers, pesticides, plastics, gasoline, kerosene, and asphalt can be extracted from petroleum.

Haha, Xu Guangqi and Song Yingxing have worked hard! "

The idiot emperor got carried away with complacency, clasped his fists to the north, and said in a loud voice, "I miss you all!"

Miss Hongliu smiled and narrowed her eyes.

It's rare to see the Young Master so happy. In her heart, she is actually even happier...

"Add some oil to it," Zhu Youjian instructed several women to add seven or eight catties of 'fuel' to the tank, "Also, prepare some fresh water;
This thing is estimated to have been simply tested, and did not take into account the cooling of the cylinder..."

Sent together with the 'oil machine', there is also a 'cradle'.

Zhu Youjian knows this stuff.

He raised the handle, poked it into a hole, tried to shake it slowly twice, and nodded slightly: "It should be activated like this."

He held down the 'petroleum machine' with one hand, held the crank handle with the other hand, and began to shake it with his arms lifted.

clap clap clap!
Clap clap clap clap!
The physique with strength +15 is not the same after all, the oil engine started easily.

Two puffs of light blue smoke burst out from the two chimneys, immediately covering the entire cabin...

……

After a dozen breaths.

Painting the bow of the boat.

Zhu Youjian, Miss Hongliu, and those women in strong attire coughed loudly with their faces covered in black smoke.

In the cabin, there were bursts of "cracking" machine roars.

A large amount of blue smoke billowed out from the doors and windows of the painting boat, as if it was on fire...

"Ahem, ahem, two bastards, they made a half-finished product, and sent it here in a hurry without knowing how to test it..."

Zhu Youjian's face was covered with black stains, and the plain silk pajamas on his body were also stained with large patches of black oil.

He was cursing, but two chrysanthemums had already appeared on his face.

Xu Guangqi, Song Yingxing!
I miss you!

This petroleum engine is still an experimental model, and it is still far from a real diesel engine.

However, even so, for the current Ming Dynasty, the appearance of this machine is simply a miracle on earth.

Who would have imagined that a year or two ago, even things like "Wooden Cows and Horses" were still in the stage of "myths and legends".

"During the Three Kingdoms period, Zhuge Kongming was not a human being!" '

Now, not only is there a steam engine, but even a prototype of a 'diesel engine' has been designed and manufactured...

……

After testing the 'petroleum machine', Zhu Youjian was in high spirits.

He asked Miss Hongliu to 'seal' this painting boat directly, and treat it as a place to store the 'oil machine'.

Of course, after the 'baptism' of diesel fumes, the cabin of this painting boat is almost unusable. Diesel oil that is not too pure is refined, and the taste is too strong!
On the deck at the bow, Zhu Youjian opened another slightly smaller box with his own hands.

Likewise, his eyes lit up.

Immediately, he smiled wryly again.

"Maxim? It's not like..."

What Xu Guangqi and Song Yingxing brought back was an 'automatic machine gun'...

However, the shape of a machine gun like Maxim is completely different.

He squatted down, fiddled with it for a while, and knew with certainty that this 'machine gun' could only be called a 'semi-automatic machine gun' at best.

'Unfortunately, I was a good boy back then, and I only knew the general appearance of these human weapons, so I couldn't come up with a more reasonable and effective suggestion at all! '

The barrier to entry is getting higher and higher.

If you don't understand the principles of firearms, you are not worthy of time travel...

"This new musket can fire up to fifty rounds in a row," Zhu Youjian said after tinkering with himself, "and, every time a bullet is fired, you need to manually eject the shell inside..."

Originally, he was quite disappointed.

However, thinking of the soldiers of the western Liaoning generals on the front line of Shanhaiguan who were still holding 'long-range weapons' such as matchlock guns, siege crossbows, and small hand crossbows, his mood quickly improved again.

"There is another flaw in this thing, that is, when firing continuously, the barrel is easy to heat up and deform. If there is no way to cool it, it will explode..."

Zhu Youjian pondered a few times, and said with a smile: "Reply to the two scientists, saying that I have received two gifts, the dragon's heart is very happy, and I plan to reward the two lovers well;

By the way, let me ask the two of them, do you want beauty or money?

Scientists, I don’t have any idea about being an official, so I won’t reward you separately, hahaha. "

Red Willow Girl: "..."

What the idiot emperor said, it seems that everyone is as lustful as him...

……

Seven or eight days later, on Kuwu Island.

Xu Guangqi, Song Yingxing and dozens of students from Daming Academy gathered in front of a 'petroleum machine', lost in thought.

At the beginning, a "prototype" of the oil machine had just been designed, and the two great scientists were overjoyed. They felt that they had discovered a huge secret weapon, so they rushed to the capital to let the idiot emperor have a sneak peek.

During this period of time, they have been improving the machine day and night, but they have never found a way.

The first is the ignition out of sync problem.

Secondly, there is the problem of cylinder heat dissipation.

Such high-end technology is one of the most difficult problems to solve for future generations, and it is even more difficult for them to reach the sky.

"In your Majesty's letter, what are your wonderful ideas about the petroleum machine?"

Song Yingxing was squatting beside the machine, his brows were furrowed, his unkempt hair was covered with black oil, his eye sockets were sunken, his face was pale, and his eyeballs were bloodshot...

At first glance, it looks like he has been thinking hard for many days.

"Your Majesty said that the ignition is not synchronized, the key is the precise coordination of the intake valve, exhaust valve, fuel injection nozzle and piston compression in the cylinder..."

"As for the details, His Majesty... didn't say anything."

Xu Guangqi said with a smile: "It is estimated that Your Majesty does not have a deep understanding of the operating principle of this oil machine?"

Song Yingxing didn't raise his head, and said casually, "I know it, but I don't know why."

Xu Guangqi: "..."

Well, this topic can stop.

In the eyes of this guy, Song Yingxing, there has always been only scientific inventions, and he has no concept of sophistication at all. If he continues to talk, he doesn't know what kind of ridicule he will say about "rebellious".

"However, there is a word mentioned in Miss Hongliu's secret letter, which I think is very important." Xu Guangqi said after thinking.

"What word?"

"Four-stroke, diesel engine."

"Four-stroke?" Song Yingxing held an iron stick in his hand, and drew circles on the ground, chanting:
"Four-stroke, what the hell do you mean?"

"Is it an operation link that needs to be divided into four steps?"

"It's not right... For four-stroke, our intake valve, exhaust valve and fuel injection nozzle need to be re-improved."

"Okay, let's start over!"

"I still don't believe it. A large group of us can't make a four-stroke diesel engine?"

Seeing Song Yingxing's appearance like a madman, Xu Guangqi smiled wryly, but did not dissuade him.

Song Yingxing is a madman of science.

Once you have any doubts in your heart, or have any new ideas, you will try to figure it out, think about it day and night, and carry out repeated experiments until the problem is completely solved...

……

Taking advantage of Song Yingxing's 'improvement' of the petroleum machine, Xu Guangqi came to the other side.

There, there is still a 'semi-automatic gun' that needs to be improved.

The old man took out the secret letter from the capital from his sleeve, read it over and over again, and carefully read the "Quotations from the Emperor" sent by Miss Hongliu several times.

He had an idea in his mind.

There are two core problems that need to be solved urgently for this semi-automatic musket.

One is the 'automation' problem of breech loading and ejection, which is easy to solve and belongs to simple mechanical improvement;

The second is the cooling problem of the barrel...

Due to the limited technical level of steel alloys, the chamber and barrel of this automatic firearm may explode if forty or fifty bullets are fired continuously.

This is terrible.

"Early Maxim machine guns needed to prepare a large bucket of cold water to cool down while firing the gun..."

"A lot of times, if you don't have clean water on hand, you can only let a team of soldiers pee on the barrel of the gun..."

The idiot emperor's words sound very reasonable.

It's a pity that they are all fragments.

There is no practicality.

Xu Guangqi stretched out his thin and slender fingers, stroked the automatic musket lightly, sighed secretly, and said with a wry smile: "This is really difficult to solve."

"Come here, all of you," the old man waved to the twenty students who specialized in 'automatic firearms', and said gently, "Let's all figure out a way together.

Consider first the problem of bullet bursts.

Then, find a way to solve the cooling problem of the chamber and barrel. "

Upon hearing this, the students moved some big tables and pieced them together, and brought some stools, set up paper, pens, rulers, etc., and started drawing homework.

The same is true for Xu Guangqi.

He sat upright, holding a brush in his right hand and a square in his left hand, pondering for a long time.

Hold your breath.

Slowly drop a pen...

(End of this chapter)