"What is this?...... Bucket chief, you've worked so hard to make a bucket with no bottom, and you can't put it in the water!"

Pei Yuming and a few other "idlers" who watched the excitement heard that Li Fan was finally going to start assembling the steam engine that was blowing so godly that it was almost to the sky, so he immediately threw down the work in his hand and ran over in a honeycomb. Pen, fun, pavilion www. biquge。 info

At this moment, Pei Yuming, Minister of Housing and Urban-Rural Development, was looking at it over and over with a bright circular object.

Li Fan rolled his eyes and corrected angrily, "What a bucket, this is a cylinder!"

"Cylinder?" asked those present in unison, confused.

"The cylinder, as the name suggests, is something used to hold gas," Li Fan pointed to the sealing ring and round steel plate that were about to be covered on it, and said, "Is there a small hole here?"

The air goes through this hole into the cylinder and pushes the piston -- uh, wait, do you know what a piston is?"

"I don't know!" the crowd synced again.

Li Fan squatted down, picked up a branch at random, and drew a simple diagram of piston movement.

Pointing to a piston in a large cylinder, he said, "You see, the gas pushes the piston upwards, and through the crankshaft, this straight up force is converted into torque, and the connected thing is called a connecting rod."

The farthest position of the top of the piston in the center of rotation of the crankshaft is called the top dead center, the closest position is called the bottom dead center, and the distance from the top dead center to the bottom dead center is called the piston stroke. The steam engine is a two-stroke machine. ”

Seeing everyone dizzy in a series of transmissions, Li Fan sighed, these principles that even high school students can understand seem to them to be almost impossible!

Only Xia Xiaohua's eyes lit up, looking at the schematic diagram of the piston movement thoughtfully, and then squatted down while drawing on the schematic diagram, muttering to herself

"Hmm.... The principle of the steam engine is to use water vapor to make the piston move upward, but the cylinder is so big, if it keeps going up, it will definitely get stuck, and if you want the wheel to move, you must let the piston reciprocate...... But how can I get the pistons out and back........."

Li Fan just wanted to explain, and then he saw a scene that frightened him, Xia Xiaohua drew two more cylinders next to the schematic diagram, and the sound became louder and faster

"Could it be that there are a few more cylinders of different sizes next to it? No, no, it's easier to get stuck. ”

He quickly erased his original drawing, and then added a connecting rod to the other end of the cylinder.

"I see!

Water vapor enters the left side of the cylinder and pushes the piston to the right, through which the piston exhaust gases to the right are discharged. When the piston moves to the right end, if the left side of the air intake is covered, the vapor enters the right side of the cylinder, pushing the piston to the left.

This will make the piston move back and forth with steam! Haha, teacher, you are so good that you can come up with such a wonderful thing!"

Li Fan wasted a lot of effort to close his jaw, Xia Xiaohua is a demon! As a child born and raised in a primitive society, how long did it take to come up with the piston principle after watching it? Yes, the steam engine is very simple, but even if he is simple, this kind of thing made by Li Fan has been transformed countless times and condensed the wisdom of countless people!

Xia Xiaohua's idea is still just a prototype, but it is a correct idea, intuition, terrifying!

Li Fan even felt that if Xia Xiaohua was thrown into the membrane world for a thousand years, he might come out with Iron Man plus antimatter weapons, in contrast... I'm really weak.

"So..... What are you talking about?" Liu Han touched his already dizzy head, and finally asked.

Li Fan looked at the confused looks on the faces of the others, and finally regained a little confidence again.

"To build a machine that can move on its own!"

The steam engine, the symbol of the first industrial revolution, symbolizes that human beings have finally begun to let go of their hands to conquer the world, conquer everything they see in their eyes, it marks that from this moment, the development of the next two hundred years even exceeds the past few thousand years, it marks that the accumulation of countless years of countless wisdom of human beings has finally reached its peak at this moment, and has begun to change qualitatively!

Li Fan put together this behemoth little by little with the help of Dogdan, and the laser cutting of Dogan and the lightsaber that can adjust the length of the plasma layer beam at will played a vital role. Although Nuwa doesn't have as many tools as dogs, her computing power is very powerful, and her hand feel is many times more than usual.

In this way, it took two days for one person and two robots to finally complete the first steam engine to appear in the world since the cataclysm!

"Chief. Can this thing really move, and it's infinitely powerful?" Liu Han frowned and looked at this strange machine, constantly circling around the steam engine, fumbling around.

If it can really move, Liu Han is sure that it is at least not the mana of an immortal, because he has been watching from the side when the village chief installed this steam engine, and he has helped a lot. This is indeed a big guy made of iron!

But... How can it move? Although the village chief had explained before, he didn't understand a word, and the reason why he could still hold on here for two days was because he wanted to see with his own eyes what the village chief was blowing, and the most important thing was because the village chief said that as long as the steam engine came out, he could make a gun!

Li Fan touched the steam engine with a metallic luster in the sun, and his heart was full of emotion. Its audit diagram is neither the original Newcomen steam engine, nor the improved Watt steam engine that schoolchildren know, nor the steam engine that foreigners have improved in their spare time.

The blueprint for it came from China, and how many people know that China has the best steam engine technology in the world?

The technology of the internal combustion engine was blocked abroad, and the Chinese studied the steam engine to the extreme, and even until the nineties, the roar of the steam engine still echoed in the vast land of the motherland!

Let's call you "Zhan Tianyou"........

Li Fan silently named the first steam engine in the new world in his heart, and said back

"Dog, Nuwa, let's get started!"

Li Fan added water to the steam chamber and threw the red-hot coals that had been prepared into the combustion chamber.

Ten minutes later, the water in the boiler was boiled, and the scorching water vapor also filled the cylinder. Finally burst out of their power.

In the horrified eyes of everyone, the piston was driven by the water vapor and began to move with the connecting rod, entered the left side of the cylinder, pushed the piston to move to the right, and the exhaust gas to the right side of the piston was discharged from the exhaust port through the steam circuit.

When the piston moves to the right end, the slide valve covers the left side of the steam path, enters the right side of the cylinder, and pushes the piston to the left.

The steam keeps the piston in reciprocating motion, and when it does, another connecting rod pulls the slide valve, and the steam pushes the piston inward.

The two connecting rods rotate rapidly with the wheels back and forth, and as the steam increases, the piston moves faster and faster.

The steam engine began to tremble, and the exhaust port spewed out puffs of scorching white gas, which were particularly dazzling in this cold winter!

Li Fan stood in front of this steel monster that seemed to contain incomparable strength, and said proudly

"It's... Steam engine!"

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If you have a book friend who has crossed over, I hope this simple popular science I wrote today can help you... 23333, in addition to asking for some recommended votes... It looks like it's really going to hit the streets......