After three years of vigorous development, the Ordnance Institute has now grown into a mature military industrial group with more than 10,000 craftsmen and workers of various types.

After the practice of previous wars, the imperial court also paid more and more attention to the ordnance, not only specially dispatched 3,000 soldiers to defend, but also designated the five miles around the firearms workshop as a military restricted area.

Liu Hongjian and Chang Yu went directly to the headquarters of the Ordnance Institute on the mountainside of Xishan, and those who could stay here were the backbone of the Ordnance Institute.

"Old Song, I haven't seen you for a few months, don't come to harm!" As soon as Liu Hong entered the research room, he saw Song Yingxing bending over and polishing something covered in oil, and there were several craftsman assistants standing around.

"Hehe, Song has seen an adult!" Song Yingxing looked back and saw that it was Liu Hong, and the rest of the craftsmen also hurried to salute.

"How about Old Song? Was the steam engine a success? Liu Honggradually saw a steam engine in the room, and there was another big man he had never seen on the side, and looked at it twice.

"Yesterday, I heard that the adults had returned to Beijing, and the old man planned to visit in person, but he was worried that the adults would work hard from afar, so he didn't bother, and the old man wanted to report the progress of this new steam engine to the adults."

Song Yingxing washed his hands in the basin, and pointed to the big steel man in the corner of the wall as he walked.

"My lord, please see, this is the steam engine that our Beiyang Sailor is using now, and the old man has been racking his brains with the first emperor since last year, intending to improve the efficiency of the steam engine.

However, the boiler of the steam engine must withstand heavy pressure, and it must be made of thick steel, and a group of steam engines is as high as more than 400 catties.

Moreover, the operation of our existing steam engine is complicated, and at least thirty people must be specially assigned to a capital battleship to take care of them at their respective nodes, and the most serious thing is that the boiler is easy to explode after a long time. Song Yingxing pointed to the steam engine in the research room.

If Liu Honggradually couldn't understand these technical things before, but when he came back from Nanyang, Liu Honggradually almost had no teacher.

Of course, Liu Hongjian knew all kinds of shortcomings and deficiencies of the steam engine, and Qi Yuangong would report to him almost every day that the steam unit of the No. 1 ship had broken down, where the boiler had exploded, and so on.

In fact, the most lethal thing is not what Song Yingxing said, the most fatal thing in the steam engine in the war is the starting speed, the battleship must boil the boiler if it wants to start, and once it boils, it cannot be stopped at will.

If the Beiyang Naval Division is attacked by a surprise attack when the steam engine is not started, it will almost always become a competent target.

"And then? This thing was developed by Song Laoxin? Liu Honggradually knew that Song Yingxing said this, and he must have thought of a solution, pointing to the new machine on the ground.

"Yes, my lord, this is the result of three months of research and development by the old man and his colleagues, or a semi-finished product, Xiao Sun, let you tell the prince about the principle of this!" Song Yingxing seemed to be thirsty, and while pouring water, he pointed to the young Sun Yun Fairway.

"Yes, Lord Song, please take a look." Although Sun Yunqiu is young, he is not afraid.

"Wait a minute? Are you a student at the Faculty of Engineering? Liu Hong gradually heard the young man call him, and the mountain chief asked casually.

"Yes, my lord, this son is the first student of our engineering college, and he is also one of the people with the highest understanding, speaking of which, the idea of this new steam engine is still proposed by Xiao Sun!" Song Yingxing handed the tea to Liu Hongchuan, and he did not hesitate to praise it.

Sun Yunqiu did not take credit, but humbly said that it was all the credit of several masters, so that several old craftsmen around him nodded frequently.

"Yamagashi, as we all know, our steam engine boiler and cylinder are separated, and the boiler burns outside, transferring the steam heat generated by combustion to the cylinder, and then pushing the turbine.

The disciple also entered the armory and found that the heat loss of this external combustion was too high, and even if the masters had been committed to heat conduction, it was still difficult to greatly improve the efficiency of the steam engine.

The disciple then wondered if it was possible to change the external combustion to internal combustion, that is, to combine the boiler and the cylinder without using steam as the working medium, and use the combustion flue gas to directly drive the turbine operation. Sun Yunqiu explained while pointing around the machine.

"Hehe, Xiao Sun, start the machine and show it to the adults!" Song Yingxing knew that Liu Hongjian didn't like to listen to these complicated things, and urged.

"Eh, disciple will start now, and the mountain elder should step back." After Sun Yunqiu finished speaking, another craftsman came out of the crowd to help.

The craftsman was responsible for pulling the bellows to blow air into the machine, and Sun Yunqiu took out a red-hot iron rod from the charcoal fire on the side and inserted it into the machine, and after confirming with his colleague who pulled the bellows that it was ready, Sun Yunqiu opened the valve.

Sudden - Sudden - Sudden

I heard a loud roar from the machine, black smoke from the exhaust port at the top of the machine, and at the same time the turbine at the other end of the machine began to spin at a rapid speed.

Liu Hong's eyes straightened.

Because the sound is a little familiar, isn't this a tractor? Or a veritable 'manpower' tractor!

There is another reason why Liu Hong was gradually surprised, he only handed over the drawings of the steam engine to Song Yingxing, but did not hand over the drawings of the internal combustion engine.

The reason is very simple, it took nearly a hundred years for Europa people to go from steam engine to internal combustion engine, and Liu Hong gradually thought about it or wanted to make good use of the steam engine, and then talk about it when the technology matured later.

I never thought that Daming could have someone who could be self-taught, what a genius!

Liu Hong gradually understood why Sun Yunqiu asked him to step back, and the machine only roared for less than half an hour before the fire was extinguished, but in just this moment, Sun Yunqiu, the two closest to the machine, were fumigated into black charcoal.

"My lord, this new steam engine is still only in the experimental stage, there is no way to use it for a long time, if the fuel problem and ignition problem are solved, most of the shortcomings of the old steam engine can be avoided." Song Yingxing sighed and said.

But where is the fuel problem so easy to solve, every advancement in technology has to drain almost all his energy.

"What's in this jar?" Liu Hongjian ignored Song Yingxing's concerns, and pointed to the iron can on the ground.

"My lord, this is gas, provided by the steel factory over there in Zhendingfu." Song Yingxing said.

The companion of gas and coal coking, the craftsmen of the Zhendingfu Iron and Steel Workshop found this thing not unusual, this thing is indeed easy and quick to burn, but the disadvantage is also obvious, it is not resistant to burning.

At this time, there is no pressure tank, and the collected gas is just gas, which is not only not durable, but also very easy to leak after a long time.

"I have a solution to the fuel problem." Liu Hong gradually said with a happy face.

"Oh? What's the best way to do it? Song Yingxing hurriedly asked.

"With oil! Oh, and that's kerosene. ”

……

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