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The equipment in the laboratory has been debugged, and Li Fanyu's engine prototype has also been assembled. Li Fanyu didn't move a single hand during the whole process, and it was completely completed by the pillars and workers.

An Ning and Lao Zhang looked at the prototype glowing with silver light, and they couldn't take their eyes off. An Ning's eyes at this time, as if an immortal cultivator had seen an ancient limited edition magic weapon, stretched out his hand and touched it in admiration.

Li Fan looked at the intoxicated expressions of the two with a foolish smile, and it was a Lang Ligrand in his heart.

Under normal circumstances, making a prototype is quite time-consuming and labor-intensive.

First of all, you have to take the model to make a wooden model, and then polish and correct the model to ensure that there is no deformation and no deviation, and then make a sand mold with the wooden model as the standard.

How do you make a sand mold? When you were a child, you played with plasticine, right? Put the key in the plasticine, and press it hard. Obtaining a seal with a physical indentation is the process of making a sand mold.

Then, if the plasticine can withstand the heat, fill the seal with molten iron to make another identical key.

That's what the sand mold does.

After a set of processes, you can use the sand mold to make the parts you want. But the problem is that there are more than 1,000 different parts in an engine, and these processes have to be carried out a thousand times.

Not to mention the costs incurred, the time alone is enough to make people's heads big. Pouring molten iron into the sand mold over and over again, this Nima is a scene that is very tiring.

But you think that's the end of it? In order to make it easier to remove the casting, the sand mold is made in two parts. After the parts come out, there will be a burr in the middle, and the old-fashioned radiator has seen it, which is the kind of burr above.

As long as the radiator is free of cracks and does not leak, it is fine, but you dare to use engine parts like this?

Therefore, you have to use sandpaper and other things to polish carefully, and if you don't do it well, there will be trivial problems such as tolerance, deformation, lack of smoothness, etc., but it is enough to make people crazy.

Now, with a 3D metal printer, all of this is no longer a problem. Li Fanyu even dared to pat his chest and assure that the prototype in front of him was no different from the mass-produced engine in terms of technology. Although the material is a little watery, regardless of the cylinder block and head or crankshaft, it is all aluminum alloy......

But for testing, it's enough.

Li Fanyu joined forces with the pillar and put the prototype on the testing table. An Ning and Lao Zhang couldn't wait to put on their goggles and prepare to start the test. The frenzied energy on his face, the feeling of Frankenstein.

Connecting the oil supply and discharge systems, Lao Zhang took a deep look at a few people and activated the switch.

If it can run normally, it means that the prototype is no problem in directionality.

Sure enough, after the oil was given, there was a slight shaking of the start, and it began to run slowly.

Lao Zhang's hands were shaking, and he stared wide as he gradually shifted gears on the simulated gearbox, watching the engine rise from 1,000 to 2,000 rpm and then to 3,000 rpm......

Until it reached 5,000 rpm, the engine was still running steadily. Only the crankshaft was soft because of the aluminum alloy material, and there was a squeaky noise.

Five minutes passed, and the machine was still running. Lao Zhang didn't dare to go any further, he was afraid that higher revolutions would destroy the machine. He slowly lowered the number of revolutions and finally turned it off.

An Ning was already crying with joy, she originally thought that this was just a rudimentary design produced by Li Fan's foolish flash. For this prototype, as long as it is operational, the highest expectations have been met.

Now it seems that her expectations were too low and too low.

The old man couldn't speak with his lips shaking, and he trembled and touched the prototype. It also does not care about the high temperature on the machine just after running at high speed.

"It's become... became... That's it?"

"You're twenty years late!"

The next moment, Lao Zhang cried and hugged the prototype directly.

Seeing this, Li Fanyu hurriedly stepped forward and pulled him away: "Professor Zhang, don't get excited, don't burn yourself!"

The old man pushed his hand away, and his body twisted like a twisted flower, and he was pulled away several times and struggled to pounce several times.

His hands were burned red, and old tears fell on the prototype and evaporated in a few moments.

An Ning silently pulled Li Fanyu and shook his head at him with tears in his eyes.

"This is a bitter tear, let him flow out. After the flow is over, he can forget his past grievances and take a new path. ”

After crying for a long time, Lao Zhang wiped away his tears, got up and bowed to Li Fanyu, and thanked the national automobile industry and his colleagues in heaven.

This situation is like drinking in a hot pot restaurant that day.

Li Fanyu's head jumped straight, and he didn't dare to answer it sideways. The teacher worships the student, which is a long life.

More than an hour passed before the exhausted Lao Zhang was sent to rest. An Ning and Li Fanyu returned to the laboratory and carried out the next experiment.

Because it is a prototype, many structures do not meet the application standards, so the two of them preliminarily calculated the power and torque. Relying on the excellent workmanship, and the prototype has no load in the test state, the calculation is quite smooth;

At 4000-6000 rpm, the engine can reach a maximum power of 132kw.

At 1500-3900 rpm, the peak torque of 32Nm can be reached.

Simple, very rough two figures, but enough to speak for themselves - this is an excellent engine!

The maximum power determines the top speed of the car and the acceleration ability of the middle and rear sections, and the bigger the better, under the premise of constant fuel consumption.

The EA888 made by Li Fanyu is a 1.8T version, which can reach a power of 132kw, which has completely exploded the engine of the same displacement in the domestic market. At present, the most commonly used 2.0L naturally aspirated engine in the Chinese market has a maximum power of only about 120kW.

The peak torque determines the acceleration ability of the car at the start, the greater the torque, the more explosive the force, and the better the climbing performance, as the saying goes, there is strength!

Although it determines whether a car explodes and runs fast, it also depends on its transmission system and transmission system. These two parts are like hands and feet, but if a person wants to run fast, it is one thing to have enough hands and feet, and a good heart is more important.

And judging from the results of the test, this EA888 is definitely a strong and powerful heart!