Donner didn't know how long he had been in the lab, but as he always was, he opened the lab door and ate the food Layla had kept in his mouth, and when he was sleepy, he took a nap on the single bed next to the test bench. Pen ~ fun ~ pavilion www.biquge.info

The smell of cutting metal was in the lab, but Donner was at ease, perhaps he couldn't smell it because he had been there for so long.

On the workbench in front of him, a metal machine more than thirty centimeters long and wide, and about half a meter high, was steaming to the open side. That's where hot and cold air meet.

What has happened in this hermetically sealed laboratory these days has been like a team of unrivaled engineers designing a special engine under extremely strict constraints.

This team of engineers is naturally the brain behind Donner's neck. When the properties of various materials, including strength, self-lubricating ability, performance at extreme temperatures, and other parameters are entered into the brain one by one, the final solution is spliced together bit by bit.

There are no petrochemical products, nor any electronic control means, all sealing, lubrication must be supplemented by the performance of parts and materials themselves, and various valve switches, hot and cold air diversion and overall temperature balance inside the machine are all solved by a camshaft. It's a task that can daunt even the most powerful supercar engine design teams.

However, this biochip that is ahead of its time has just done it. Not only did it design the lubricant-free rotary engine with great ingenuity, but at Donner's behest, the various components were simplified to the point that the entire rotary engine had only 13 parts, excluding the fasteners.

After all the design plans were introduced, even Downer had to look at it for a long time before he could figure out what some parts did.

For example, there is a strange oblique hole reserved on the valve ejector rod of the hot air chamber, and Donner repeatedly calculated, only to find that it is to export the air flow in the hot air chamber into the inclined hole to push the cam at the moment when the ejector rod contacts the cam, so as to reduce the contact time of the metal parts, and finally play a lubrication-free role. Exquisite details like this abound throughout the engine compartment.

With the help of the powerful auxiliary computing of the brain, Downer is like a master of machining who is extremely proficient, turning parts from drawings into real objects.

A day earlier, all 13 design parts, including the engine block and cylinder head, had been manufactured, and in the time since, Donner had made more than 400 screws, nuts, and other fasteners from dwarven steel doped with 1/1000th of Mithril.

Now, the Magic Rotor Engine in front of him had been installed to the last step, and only one side of the cylinder head was still open.

Donner waited for more than an hour to make sure that there was no change in the room temperature of the laboratory - that is, the energy of the two totem poles tended to be equalized and did not form overheating or overcooling in the cylinder - before fastening the cylinder head on the flat side according to the contour of the cylinder, and then screwing the six screws the thickness of the little finger in turn, and then tightening them one by one.

At this point, the entire rotor engine has been completed, just waiting for Downer to test the results.

According to the theoretical data provided by Zhinao, the total weight of this magic energy rotor engine is 104 kilograms, and when it is at full output, the temperature in the cold and hot cabins of different volumes reaches 760 °C and minus 170 °C respectively, and the ultimate power is 420 kilowatts (slightly larger than the 3.8t engine mounted on the Nissan GTR sports car).

Since there are no spark plugs, no combustion chambers, no air intakes, and almost all but a safety relief valve, the engine is visually finished, like a piece of metal art with a smooth surface.

Donner admired it for a moment, then reached out, slightly nervously, and slowly pushed the power pusher on the side of the engine toward its interior. The metal interference fit between the actuator itself and the sleeve has just the right amount of blocking and an excellent feel.

At the same time, inside the engine, which was completely covered by the cylinder block, two secret copper totem poles in the mixed chamber were slowly pushed into the hot and cold chambers, and the hot air in the hot chamber suddenly expanded towards the cold chamber with a sudden drop in air pressure, just as calculated.

The triangular rotor is pushed by the air flow to start spinning, and the gear in the center of the rotor drives a set of planetary gears to instantly transmit power to the engine output, and the camshaft directly connected to the triangular rotor pushes each valve ejector in turn to divert the fast-flowing high-temperature air in turn, mix with the low-temperature air in the cold cabin, and then send it back to the hot cabin.

Donner's hand continued, continuing to push the pushrod, and the inside of the engine, which had been kept quiet, gradually heard a slight vibration, which came from the camshaft at the rotor shaft, and then passed through the entire engine block, to the power pusher in Donner's hand.

At this time, the pushrod, which has a stroke of sixteen centimeters, is only a third of the way forward.

As the stroke grew, the entire engine began to vibrate at high frequencies, even the steel table with the Donner vibrating, and the output shaft on one side of the engine was already spinning rapidly.

Donner pushed the putt hard all the way in, then instinctively took a few steps back.

The rotor engine made a loud "z" noise, and then the noise gradually subsided, and finally remained slightly annoying, according to Downer's estimation, it should be less than 80 decibels, which is much quieter than the average car engine.

The whole engine moved slowly on the metal table because of the high-frequency vibration, but the amplitude was not large, and it would not fall off the table for a while.

The output shaft of the engine had already rotated to an extremely high speed, and for fear of affecting the structure of the secret copper totem pole, Donner did not dare to use his mental power to probe the situation inside the engine.

According to his calculations, the loud noise made by the magic energy engine when it was working at full strength for the first time just now should be caused by the violent friction between various metal materials inside the engine. Because there will still be some errors in the design and manufacturing, the result of this friction is to completely smooth out these errors with violence, which is equivalent to the process of engine running-in. However, because it is more precise than ordinary internal combustion engines and does not have any lubricants, the run-in process is extremely short.

In addition, because there is no fuel deflagration inside the engine, the rotor structure is quieter than the reciprocating piston structure, and the entire engine is almost completely sealed, the noise of the magic engine during normal operation is much less than that of a common car engine.

After being limited by energy scarcity for a full decade, Donner's mood was extremely good in the face of such a magical energy engine that could work forever without any fuel, and his face unconsciously smirked.

He watched straight for more than ten minutes before he walked up to the magic engine and slowly pulled out the power pusher. The engine gradually quieted down, and it took more than two minutes for the shaft at the output to stop spinning completely.

Donner carefully placed the machine in the center of the table like a newborn baby, and watched it for a long time before opening the laboratory door and walking out.

At this moment, the winter midday sun shone in from the direction of the dining room directly opposite the laboratory and reflected on Donner's face. He suddenly had the illusion that the world had changed color after a few days of not seeing each other.

Donner miscalculated the time, twelve days had passed since he entered the laboratory "retreat", but, as he had felt, the world had changed color - a new era had officially begun because of the magical engine in the laboratory behind him.