After more than a dozen experiments, all of them ended in failure. Pen, fun, and www.biquge.info

Renault repeatedly checked and calculated the size, oil intake, and air intake of the Boar, and found that there were no major problems, and finally reluctantly came to the conclusion that the ignition point of the lard was too high, and it could not be ignited in the cylinder by the heat of compressed air.

This is a clear problem, if lard could really replace oil, there would not be so many wars in the previous world.

With no lard and no other fuel to use, the development of the Wild Boar hit its first and deadliest bottleneck.

Over the next few days, Renault shut himself up in the lab, found all sorts of things to experiment with, and even used a lot of the small amount of glycerin.

For Renault's unusualness, the people around him began to feel worried.

Especially Hongye, who has been in Black Iron Town for almost half a month, is still waiting for him to find a way to solve the food problem. But he couldn't see his figure at any time, and even if he did, Renault was talking to himself frantically, or looking down to think about things, and even her greetings seemed to be deaf.

"Charlotte, is Mistress Renault there?"

Finally, Momiji couldn't wait any longer, and after leaving for half a month, there were still many things to deal with in Tuke City. So after several inquiries, she finally found the laboratory.

Charlotte pointed to the locked door with a pencil and motioned for Renault to be inside: "I haven't been out all day." ”

Momiji furrowed her beautiful eyebrows, but in the end she didn't knock on the door, she knew that Renault would definitely not listen to anything at this time, so she handed a small notebook to Charlotte and asked her to help pass it on, and then left worriedly.

It wasn't until late at night that Renault dragged his tired body out, and Charlotte was still waiting for him.

"Oh, you haven't slept yet?"

"Do you remember needing to sleep at night?" said Charlotte, looking at his sunken eyes.

"Well, there's no way, there's still twelve days left, and I have to find a working fuel before then. ”

Renault casually found a chair to sit down, and he asked Charlotte to show all the drawings.

"What kind of machine is this?"

"It's an internal combustion engine. ”

So Renault began to talk to Charlotte about the principle of combustion, the expansion of air, etc., etc., not in the hope that Charlotte could give him any good advice, he just hoped that through the beginning and the end, he would let himself discover something that he had not thought of.

It wasn't until dawn that Charlotte finally learned how the internal combustion engine worked, and keenly discovered why the Boar couldn't succeed because of lard.

The problem seemed to return to the same place, and Renault, who had not slept much for many days, lay down on the table and fell asleep, Charlotte helped him cover him with a thick blanket, and then picked up the drawings and looked at them in detail again.

When Renaud woke up, he felt unbearable hunger in his belly, and just wanted to get something to eat, he was surprised to find Charlotte also asleep on the table, with the pencil in his hand still on the drawing.

Just about to wake her up, Renault suddenly saw that a small change had been made on the drawing.

Originally, the innermost part of the casing cylinder was pulled out of an extremely narrow pit, and a flame was painted inside.

Use a flame to light lard?

Renault couldn't help but feel relieved, Charlotte just listened to him talk about some simple diesel engine working principles, and he could think of an ignition method similar to a gasoline engine, which is really valuable.

However, this method is not realistic, because Renault cannot make spark plugs yet. Even if a spark plug could be made, it was unknown whether the lard would be ignited by an electric spark.

Wait, looking at the flame pattern on the drawing, Renault suddenly remembered something.

All along, he has been thinking of a way from the aspect of natural technology, so why not think about it from the direction of the demon spirit?

Demon Spirit Flame, he himself is the awakened person of Demon Spirit Flame, if he can transplant that high temperature into the internal combustion engine, he won't have to worry about ignition at all, right?

Thinking of this, Renault quickly burrowed into the room next to him again.

Ever since he had been promoted, he hadn't checked the state of the demonic power. Maybe the fifth-order demonic power can help accomplish this impossible task.

Quickly entering the cultivation state, Renault saw that around his heart, there were dense golden fire points. These points of fire are formed by the compression of the Fire Spirits, which Renault refers to as Fire Spirits.

He tried to drive the fire spirits, and found that they were actually able to move freely in his body like liquid fire, and they could also leave his body and fly freely in the air around him.

Moreover, the temperature of the fire essence is higher than that of liquid fire, and it is only an instant matter to penetrate a two-centimeter steel plate.

If they can be used to ignite the Boar, the lard will be able to fully burn in the cylinders.

But there are two problems with that.

One is how much time the fire spirit can exist freely after leaving his body. The second is how to control these fire spirits, so that their high temperature can be used without destroying the machine.

Renault did some experiments, and the fire spirit had been out of his body for ten hours, and still not a little weakened, which was enough time for a testing machine.

Then there was the question of how to control it, and he made a vial with a lid out of the Blue Absolute Stone and forcibly filled it with the Fire Spirit. Under the oppression of the Blue Absolute Stone, the fire spirit instantly dimmed and lost its original high temperature.

But as soon as the lid is opened, the fire point will suddenly "wake up", and then violently "escape" outside, spewing out a large ball of burning flames like an explosion, if it were not for Renault's "fire resistance" is close to infinity, this time it would have to be burned to ashes.

What if you only leave a very small hole in the cap?

As soon as he thought of it, Renault drilled a hole of less than a millimeter in the lid, put the fire point into the bottle again, and then got the blue stone stopper on the small hole.

Whew――

An extremely thin flame erupted from the small hole, and it took about ten seconds for the fire spirit to completely escape from the bottle.

In this case, as long as the small hole is plugged with the blue stone in time, the fire spirit will have time to spew out a stream of high-temperature flames, and it will not be able to escape from the bottle.

It looks like it can succeed.

Renault immediately asked Ferre to modify the boar's casing, and together with Charlotte, he designed a more practical "igniter".

The new igniter had two "switches", that is, on the small holes, two valves were added.

The first valve is manually controlled and acts as a master switch for start and stop.

The second way is to use the stroke control of the internal combustion engine, when the piston is in the return position in the cylinder, the switch opens and sprays out the flame, igniting the lard flowing into the cylinder, pushing the piston to move forward to do work, and at the same time turning off the ignition device, so as to prevent the fire essence from escaping from the igniter and causing damage to the machine.

After several days of non-stop exploration, the improved version of the Wild Boar finally reached the stage of ignition test.

Combining technology with the power of demons, Renault is confident that this time it will definitely succeed. (To be continued.) )