reborn industrial empire

Anyone who knows about cars and has played with cars probably knows the significance of Mitsubishi's evo in modern coupes.

Anyone who has been engaged in the automobile manufacturing industry in China probably understands the significance of the Mitsubishi evo's 4g63 engine to the people of China.

As a person working in the automobile industry who has been engaged in automobiles for more than ten years in his previous life, Jin Xiaoqiang’s knowledge of this engine can be said to be inside out.

Regardless of the debate between Japanese and German, this engine really deserves the word classic. Even if it is a Mercedes-Benz or BMW, the engine in NB may not be able to influence the common people in China, especially the car owners.

Can't beat this 4g63 engine.

Although Japanese car companies are very unkind, and the cars they buy in China are all thin-leather cars with reduced configurations, Jin Xiaoqiang also hates the Japanese.

But when it comes to engine technology, Jin Xiaoqiang cannot speak out of conscience. He has to admire the Japanese engine technology, and the most important thing is that when it comes to the transfer of engine technology, the Japanese are obviously better than those noble ones.

Volkswagen's 'magic car' is much more kind.

You must know that for China's own-brand car companies, many manufacturers' engines started by imitating this 4g63 engine.

Because since 2000, private funds have been opened up by the state to the field of automobile research and development. In the world, only Japan's Mitsubishi has used technology transfer for this engine, which was not particularly backward in the world at that time.

method and transferred it to the Aerospace Engine Research Institute in Nanyang City.

And those so-called xxx cars have been following the Germans for so many years and helped the Germans steal so much RMB. Unfortunately, after 2000, they can't even buy a Santana or Jetta with all the engine technology.

Come on, let alone my so-called research and development, it is simply a big joke...

It was the 4g63 engine introduced by Nanyang Aerospace Engine Research Institute that became the originator of engine development for many domestically produced cars.

I have to say that Mitsubishi engines are unique, especially small-displacement engines. A 2.0-displacement engine can reach 280 horsepower, and this is just through various minor modifications.

If the restrictions of the ECU are lifted and modified with some professional components, this engine can easily output 400 horsepower, or even exceed 700 horsepower or even higher.

You must know such data. Even in the 2010s, there are still many so-called latest engines that cannot achieve such output power.

Of course, the 4g63 engine that Mitsubishi exported to Nanyang Aerospace Engine Research Institute is only a castrated version. The 4g63 engine originally configured on the Mitsubishi evo is a red-top engine with DOHC and VVT technology.

The 4g63 transferred to China is an ordinary civilian version of the engine that uses SOHC and does not have VVT ​​technology.

The difference between the two is Mitsubishi's VVT technology called mivec, and the difference between dohc and sohc.

Although this civilian version of 4g63 has the above two differences from the red-top 4d63 used by Mitsubishi in evo cars, even this civilian version of the engine brings great benefits to Chinese automobiles, especially to automakers of their own brands.

, also had a very big breakthrough.

The most critical thing is that this engine has not been stripped of its original electronic injection system.

You must know that before the introduction of this engine, China's automobile manufacturing industry, especially those automakers of its own brands, were still using mechanical carburetors when researching engines. You must also know that the international mainstream engine manufacturing technology at that time

, this technology has long been abandoned.

However, the boss of the state-owned enterprise failed to live up to expectations. After working with Volkswagen for twenty years, he could not even get a set of professional engine technology from the foreign devils...

So it was not until the introduction of this 4g63 engine that the electronic injection technology problem in China's automobile engines was solved...

Later, many models produced by the so-called independent brands did not even change and used this engine, such as Zunchi produced by Huazhong, Liji's Emgrand e8, Ricky's Son of the East, Great Wall's hx series...

What Jin Xiaoqiang sees now on the computer screen is the drawing of the 4g63 engine drawn by Liu Xiaoliang. It can be seen that Liu Xiaoliang is quite capable in modeling and drawing.

You must know that many so-called engine design students in China, even if they enter an engine research and design unit, are basically just apprentices in the first year, that is, they learn how to draw from the master. If they design, calculate power, but disassemble and assemble

The engine is just someone else's thing to remember.

When it is really his turn to design, he usually has to wait until such an apprentice has entered the engine field, has accumulated three to five years of experience, and has his own understanding of the engine.

Design and develop an engine yourself.

But now it is basically no longer time for one person to design alone. Generally, every R&D company has a dedicated R&D team.

Generally speaking, it takes 36 months or even longer for an engine to be completed from design, to research and development, to prototype production, and various adjustments and experiments. And the first step is

Basically, I draw and model on the computer.

This 4g63 engine was introduced by the Aerospace Engine Research Institute in Nanyang. Taking advantage of such convenient conditions, Jin Xiaoqiang and his school, especially the automotive design major, also requested several engines from the aerospace institute.

When Jin Xiaoqiang and the others were in class, they were constantly dismantled, explained, and reassembled as living creatures. It can be said that one of the few meaningful experiments that Jin Xiaoqiang and the others did when they were in college was disassembly and assembly.

This 4g63 engine.

In his previous life, he had been engaged in car design for almost five years, and in the end he was reduced to repairing cars for others. Jin Xiaoqiang was extremely familiar with this engine.

4 cylinders, 2.0 displacement, special design with stroke (88mm) larger than bore (85mm), power per liter of 140 horsepower, maximum power of 280 horsepower, maximum torque of 407n/m...

This engine can be called a classic for any Chinese car enthusiast.

In fact, what Jin Xiaoqiang and Liu Xiaoliang are going to do today is to replace the original 4g63 SOHC with DOHC and steal Honda's vtec technology. After all, when it comes to vvt technology, Honda is the winner.

Looking at the familiar engine diagram on the computer, Jin Xiaoqiang called Liu Xiaoliang to his side and explained it to him...

It turns out that this SOHC technology means that when there are more than two valves on the engine cylinder, the intake valve and exhaust valve are mixed and arranged on a camshaft. In this way, when the engine is working, because it cannot work well

The valves are controlled at different positions in the cylinder, so the accuracy of the work is relatively poor, and the combustion ratio of the engine will not be very good, so it consumes more fuel.

And this dohc technology, to put it bluntly, means using two camshafts on the engine, so that there will be no problems when the sohc engine is running.

However, sohc is relatively simple, easy to maintain, and cheap, but the manufacturing of dohc is more complicated and the price and cost are relatively high. However, the mainstream trend of future engines is to adopt dohc technology.

What Jin Xiaoqiang has to solve today is to give Liu Xiaoliang the drawings of this dohc, and this dohc technology has always been a very critical and in short supply technology in China. It was not until seven or eight years later that China's independent brand has been

This technology was publicized only when certain research and development capabilities were established.

When Jin Xiaoqiang drew the dohc drawings for Liu Xiaoliang, Liu Xiaoliang was already shocked by Jin Xiaoqiang. You must know that the drawings drawn by Jin Xiaoqiang were quite impactful to Liu Xiaoliang.

Although it is just a change of the camshaft on the top of the engine, how many people can't think of it alone? Even if they think of it, how many people can draw it like this?

And the most important thing is that while Jin Xiaoqiang was drawing pictures, he was explaining various theories of DOHC to Liu Xiaoliang. Although he could not see the actual engine yet, his theory alone made Liu Xiaoliang feel very convinced.

.

Jin Xiaoqiang and Liu Xiaoliang were constantly talking dialectically, and although Liu Mei didn't understand, she could still see that these two people in front of her were really talented and knowledgeable people, and the men at work were indeed really good people.

The most charming time.

At least at this moment, Jin Xiaoqiang looked very serious. There was no trace of the cynicism on his face when he was doing business in the morning...

After finishing the dohc, he drew the drawings and explained all the technical theories to Liu Xiaoliang. After Jin Xiaoqiang felt a little hungry, he raised his head and noticed that it was already dark outside.

Come down...

"Xiao Liang, if there is no rest, let's talk about it tomorrow..."

"Ouch! Why are you still delaying? Isn't the rest just a vvt technique? Let's just chase Shangyong after the bad guy and attack him tonight..."

Liu Xiaoliang is a complete technical geek. For him, the wonderful ideas in Jin Xiaoqiang's brain are an ocean of knowledge. Now he is just a dry sponge, and he must fully absorb all the ideas in Jin Xiaoqiang's brain.

That knowledge.

"Hey! Okay! Well...Liu Mei, can you go get some food for a few of us? We probably have to work overtime tonight..."

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The new book needs maintenance! Collection, recommendation, ants are calling for support at the top of their lungs...