The five-cornered plum blossom-shaped mortise and tenon joint mentioned by Master Wang has completely solved the last problem of the steam engine so far - the tightness of the exhaust valve.

Punch a neat round hole in the boiler, this vent.

A light alloy cylinder of the same specification was hollowed out and set up in the shape of a pentagonal plum blossom-shaped mortise and tenon joint.

The pentagonal plum blossom is retracted into the inside of the cylinder, and the size is as large as the round hole. But once you enter the hole and let go of the cables, the springs will prop out the five pillars that are hidden inside.

Prop up from the inside and fit perfectly to the boiler wall. If you don't pull the thread, you won't be able to pull it out anyway.

And this completely solves the flexibility of the exhaust valve.

Summoning his apprentices to start forging, Master Wang held the drawings in his hand and asked, "Why do you need to make a chimney in this place of the boiler?" ”

"It's an exhaust pipe."

"Isn't that redundant?"

"For safety. Otherwise, when the high-temperature steam is discharged, the direction is irregular, what if it sprays on people? With the use of a chimney, it can be guided and directed the steam to be discharged in a fixed direction. At the same time, noise is also reduced. ”

Master Wang exclaimed, "Oh, that's really the truth. ”

Turned his head and kicked the apprentice again: "Be serious." The difference is thousands of miles, use the ruler given by Master Li to measure carefully, don't make a mistake about the specifications. ”

The apprentice who was busy didn't mind, and said with a smile: "Don't worry, master." I'm familiar with it, so I can't get the specs wrong. ”

"That piston must be sealed with good rubber, and the inside must be brushed with oil, you know? This one is active. ”

"I know, master."

“……”

Master Wang simply moved his iron-striking room into the Kyushu Physics Institute, and Li Zhen and the others didn't mind eating and sleeping with these iron-striking men at all, and even felt a little sorry for others.

This Master Wang is also a fanatic, it seems that men are naturally fanatical about machinery. He didn't even want to make money, so he spent some days in the Kyushu Physics Institute every day listening to some days that he couldn't understand, and was working hard to learn cultural knowledge.

Master Wang is happy to participate in this scientific research environment. According to one of his jokes: I also want to leave a mark in history, and in future history books, it is enough to mention my name, and I have not come to this world in vain.

On the third day, the second generation of steam engines appeared!

In the year 10,000 of the new calendar, October 2nd, autumn. The real steam engine was now invented.

At the Kyushu Institute of Physics, a steel monster more than half a meter tall is loaded onto a four-wheeled flatbed truck with a horizontal bar at the front to control the direction and a simple brake to stop the wheels at the foot.

There's no way to control the speed.

Li Zhen personally put a big red flower made of red silk on the handlebar, picked up a piece of coal with his own hands and threw it into the heating chamber under the boiler, and said with a smile:

"Who's coming?"

"Me!"

"I'm coming!"

"Let me come!"

"Grace comes, let grace come."

"Hahaha, Enze, if it still explodes this time, you can accept your fate."

“……”

Qin Enze licked his lips excitedly, a terrifying smile appeared on his hideous face, and he laughed and jumped on the world's first steam engine-driven cart: "If you pay him back this explosion, I think it will be God who won't let us touch the forbidden area of steam, hahaha." But unfortunately, God agrees that we should move forward towards science. ”

Seeing that the pressure gauge connected to the handlebar was slowly climbing, Qin Enze sat on the board car and anxiously moved forward: "How much pressure will this push?" Death in a hurry. Why don't you leave? ”

Li Zhen said: "Don't worry. At first, it needs inertia, but when you walk in the back, you will go faster and faster. ”

Everyone at the Kyushu Institute of Physics stood outside the door and began to roll out the red carpet and try to smooth the road in front of the door as much as possible.

The villagers of Dafengtai spontaneously picked up brooms to sweep the road into Laoshan County, constantly throwing the rocks on the road aside, and using sledgehammers to smash the uneven surface of the land.

"Finally figured it out today?"

"I heard that it is called a steam engine, this is the first experiment, but it must be successful."

"Haha, if this really works, then we won't need a carriage in the future. This steam cart can replace the horse-drawn carriage, and there is no need to rest the breath, and the horse will have to sleep when he is tired of running. This machine is not used. ”

"I hope it will work."

"It's not easy for these children, God must bless them with success."

"God bless Kyushu."

"Get out of the way, everyone in front of you dodge, and the steam engine will come later, don't get in the way, hit you."

"What? I heard that the steam car has been studied? We came from Xiaofengtai to hear the news. ”

"Everyone from all over the country has heard the news and is here."

“……”

When the pressure gauge pointed to 20, Qin Enze suddenly held his breath, and after a while, the green tendons on his neck rose and fell. Roared: "Success, move!" ”

'Woo woo'

From the cylinder there was a sudden whine of piston and air pressure colliding. At the cylinder, small wisps of white smoke began to spill out.

Li Zhen shouted: "Add fire!" ”

Qin Enze turned around suddenly, picked up a few pieces from the coal pile on the car and threw them into the furnace.

The flames burned, and the crank link began to swing violently......

"It's moving, it's moving!"

With a scream, the cart slowly slid out of the gate of the Kyushu Institute of Physics.

Qin Enze hit the steering wheel, turned a corner, and headed towards the main road.

Outside the door, all the people of the Kyushu Institute of Physics jumped up in ecstasy, looking at the board car that was slow but gradually accelerating, and laughed.

Li Zhen also hurriedly ran out, and with the people of the Kyushu Institute of Physics, the villagers on both sides of the road ran after the steam car.

"Hahahaha."

"It really worked!"

"Steam car, it worked."

“……”

The villagers' faces were full of surprise, and they looked at the speed of the cart that kept emitting white smoke. There is no horse, and it is not a downhill road, but it is running faster and faster, and it feels infinitely magical.

"That's amazing. That's science. ”

"There's no horse-drawn cart, how does it move?"

"It's amazing, this car is amazing."

"It's so fast, I can't catch up. It doesn't yet know tired. ”

“……”

Many villagers from Dafengtai hurriedly ran back to ride horses and ride mules to chase after them. Some of them were young and strong, and they ran after them with all their might. I can't catch up if I run and am paralyzed.

"Too ...... It's so fast! ”

“……”

Qin Enze drove this cart, and while adding coal to it, he laughed and rushed to the city.

'Woo woo'

A whine rang out in the calm Laoshan County. The soldiers patrolling the streets immediately turned their heads solemnly, and the people who were wandering around the streets also turned back.

All of them are petrified.

Looking at the street, a car emitting white smoke, without a horse, rushed over quickly.

On the board car, a disfigured teenager laughed wildly: "Get out of the way, get out of the way!" ”

Everyone, along with the armor, flashed to the side of the street in disbelief, a little curious, and a little frightened as the self-moving cart rushed over quickly. It turned out to be as fast as a horse.

"What's that!"

"Oh my God, what kind of magic is this?"

"It moves on its own."

“……”

After a few moments, scattered men chased after them from behind, each with their tongues sticking out of their heads. While chasing the steam car, he shouted weakly:

"It's so good to run."

"Why isn't it tired!"

“……”