Automotive Black Technology Chapter 105: ：A strong heart
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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 hand during the entire process, and it was completely completed by Zhu Zhu and the workers.
An Ning and Lao Zhang looked at the silvery prototype and couldn't move their eyes away. An Ning's eyes at this moment were like those of a cultivator seeing an ancient limited edition magic weapon. He stretched out his hand and touched it in admiration.
Li Fan looked at the intoxicated expressions of the two with a silly smile, and felt a wave of excitement in his heart.
Under normal circumstances, making a prototype is quite time-consuming and labor-intensive.
First, you have to use the modeling tool to make a wooden model, then polish and correct the model to ensure there is no deformation or deviation, and then use the wooden model as a standard to make a sand mold.
How are sand molds made? Did you play with plasticine when you were a kid? Put the key in the plasticine and press it firmly. Obtaining an impression with a physical dent is the process of making a sand mold.
Then, if the plasticine can withstand high temperatures, pour molten iron into the mark, and another identical key can be made.
This is what sand molds are for.
After a set of processes, you can use the sand mold to make the parts you want. But the problem is that an engine has a thousand different parts, and these processes need to be carried out a thousand times.
Not to mention the expenses incurred, the time alone is enough to make people’s heads ache. Filling the sand mold with molten iron over and over again is a very tiring scene.
But do you think this is the end? Patterns and **** are compulsory! To facilitate the removal of the casting, the sand mold is made in two parts. After the parts come out, there will still be a burr in the middle. Have you ever seen an old-fashioned radiator? It’s the kind of burr above.
The radiator is fine as long as it has no cracks and no water leakage, but do you dare to use the engine parts like this?
So you have to polish it carefully with sandpaper and the like. If something goes wrong, there may be minor problems such as tolerances, deformation, insufficient smoothness, etc., which are trivial but enough to drive people crazy.
Now, with 3D metal printers, this is no longer a problem. Li Fanyu even dared to pat his chest and guarantee that the prototype in front of him was no different from the mass-produced engine in terms of technology. Although the material is a bit wet, regardless of the cylinder block, cylinder head or crankshaft, they are all made of aluminum alloy...
But it is enough for testing.
Li Fanyu and Zhu Zhu worked together to put the prototype on the inspection table. An Ning and Lao Zhang couldn't wait to put on their goggles and prepare to start the test. The fanatical energy on his face is like a Frankenstein feeling.
After connecting the fuel supply and exhaust systems, Lao Zhang took a deep look at several people and turned on the switch.
If it can run normally, it means there is no problem with the directionality of the prototype.
Sure enough, after adding oil, there was a slight vibration when starting, and it started to run slowly.
Lao Zhang's hands were shaking. He opened his eyes wide and gradually raised the gear on the simulated gearbox, watching the engine rise from one thousand rpm to two thousand rpm, and then to three thousand rpm...
The engine was still running stably until it reached 5,000 rpm. Only the crankshaft made a squeaking noise due to its soft aluminum alloy material.
Five minutes have passed and the machine is still running. Lao Zhang didn't dare to continue. He was afraid that higher rpm would destroy the machine. He slowly lowered the rpm and finally turned it off.
An Ning was already crying with joy. She originally thought this was just a rudimentary design created by Li Fanyu's sudden inspiration. For this prototype, as long as it works, it has met the highest expectations.
Now it seems that her expectations were too low.
Lao Zhang’s lips were trembling so much that he could no longer speak, and he touched the prototype tremblingly. Regardless of the high temperature on the machine just after running at high speed.
"It's done...it's done...that's it?"
"You're twenty years too late!"
The next moment, Lao Zhang burst into tears and hugged the prototype.
Seeing this, Li Fanyu quickly stepped forward and pulled him away: "Professor Zhang, don't get excited, don't get burned!"
The old man pushed his hand away and his body was twisted like a twist. He was pulled away several times and struggled to pounce on him several times.
His hands were burned red, and old tears fell on the prototype, which evaporated after a while.
An Ning silently pulled Li Fanyu and shook her head at him with tears in her eyes.
"These are bitter tears, let him shed them. Only after they are shed can he forget his past grievances and take a new path."
After crying for a long time, Lao Zhang wiped away his tears, stood up and bowed to Li Fanyu, thanking him not only for the national automobile industry, but also for his colleagues who are still alive.
This situation is just like drinking too much at a hot pot restaurant that day.
Li Fanyu's forehead was pounding, and he leaned sideways, not daring to catch it. If a teacher pays homage to a student, his life will be shortened.
More than an hour of chaos passed before the exhausted Lao Zhang was sent to rest. An Ning and Li Fanyu then returned to the laboratory and conducted the next experiment.
Because it is a prototype, many structures cannot meet application standards, so the two made preliminary calculations of power and torque. Due to the excellent workmanship and the fact that the prototype had no load during testing, the calculation went smoothly;
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.
It’s very simple, very rough two data, but it is enough to illustrate the problem - this is an excellent engine!
Maximum power determines the car's top speed and acceleration capabilities in the middle and rear sections. As long as fuel consumption remains unchanged, bigger is better.
The EA888 made by Li Fanyu is a 1.8T version, which can reach a power of 132KW, which has completely surpassed the engines of the same displacement in the domestic market. Currently, the most commonly used naturally aspirated engine with a displacement of 2.0L in the Chinese market has a maximum power of only about 120KW.
The peak torque determines the acceleration ability of the car when starting. The greater the torque, the more powerful the explosive force, and the better the climbing performance. As the saying goes - powerful!
Although determining whether a car can run fast depends on its transmission system and transmission system. These two parts are like hands and feet. However, if a person wants to run fast, having enough hands and feet is one thing, and a good heart is even more important.
Judging from the test results; this EA888 is definitely a strong heart!