And the first people to appreciate this drawing were, of course, Ding Weizhong and Liu Xiaoliang.

Liu Xiaoliang, as a major in automobile design and a technical controller in the field of engine design, is crazy about the various data and indicators of the engine.

As soon as Jin Xiaoqiang's drawings were taken out, they immediately made Liu Xiaoliang's technical controller feel crazy and shocked.

Not to mention Ding Weizhong, who has been engaged in engine and gearbox design for most of his life, when he was in Nanyang Machinery Factory before, Ding Weizhong also disassembled Jetta's 1.6 engine.

However, at that time, Jetta's engine was much more backward than now, and it was still using carburetor technology, unlike today's engine, the use of EFI technology has been a popular trend.

Jin Xiaoqiang's set of design drawings, large and small, has a total of hundreds of pages of drawings, which not only provides detailed design drawings of various components of this engine.

In some places, there are detailed annotations and explanations, as well as theoretical data made using mathematical formulas, etc., which seem to be simple and straightforward.

From the perspective of Ding Weizhong, a pure technician who has been engaged in design and development for more than 20 years, such drawings are definitely not something that can be designed by anyone alone.

The person who can design such an engine must have at least five years of design experience and often work with engines.

But what made him feel a little unbelievable was that this drawing was really from Jin Xiaoqiang, and it was really drawn by him.

The most terrifying thing is that this guy even marks the allowable tolerances of each component, and the most difficult part of this engine is the setting of tolerance parameters.

After all, many parts are produced and have certain discrepancies with the drawings, and each part has a little discrepancy, and hundreds of parts are assembled together, so the tolerance value of the engine is very different.

And if these data are wrong, then the surname and service life of the engine will be very different from the beginning of the design.

So far, the major domestic automobile companies basically do not have a professional design team, and those state-owned factories in China are now completely assembly plants of foreign-funded companies.

The engine design of the private independent brand has just started hard, and there is no concept of formation at all.

For example, Ricky Automobile, which is now the most famous independent brand in China, is simply entrusting an Austrian design company to do it with their car engine and appearance design team.

And like Jin Xiaoqiang, a college student who has just graduated, just one person, with no experience in engine design at all, can get such a drawing, in Ding Weizhong's eyes, this young man is simply a demon and a pure genius!

After all, the drawings of his engine design seem to be very feasible in theory, as long as the engine can be made according to this drawing, then all theories will be verified.

If all the design theories on this engine have been verified, and can reach the values at the beginning of Jin Xiaoqiang's design, then this engine will not dare to be said in the world.

But in China, it can definitely be regarded as an epoch-making invention, after all, this will be the first pure Tianchao people to design, independent research and development, with the international leading level of small displacement engine.

Jin Xiaoqiang didn't know Ding Weizhong's shock when he saw this drawing, he only knew that he was really tired enough in the past ten days.

In his previous life, he disassembled this 1.6-liter naturally aspirated engine no less than 100 times, and repaired no less than 100 of them in his hands.

Moreover, when he was in the design team of an automobile company, he personally participated in the disassembly of this engine and the data measurement, so he was able to remember the parameters of this engine and the data of each component so clearly.

It took them a month to disassemble and reassemble the engine, taking pictures of every part from the time it was disassembled, and then taking pictures and measuring it.

It took a month to come and go, to disassemble, measure, and then reassemble, and he was already familiar with a lot of data.

At this time, it is really not difficult for him to take out this engine, but as for the shock to Liu Xiaoliang and Ding Weizhong, he can't care about it.

During this time, in order to rush to work on this drawing, he was really tired, not only racking his brains every day to ponder the parameters of various parts that he said he remembered in his previous life, but also to implement these on paper and draw them.

Then, in order to make others believe that this is their own originality, they also have to list a series of mathematical formulas to test their theories, to explain why they designed it this way, and why they came up with such data.

This series of operations can kill enough of Jin Xiaoqiang's brain cells.

Jin Xiaoqiang chose to rest for a few days, while Ding Weizhong and Liu Xiaoliang happily went out with Jin Xiaoqiang's drawings, and they planned to use the existing materials in the factory to see if they could make such an engine.

At present, the mainstream trend of the material used in the domestic engine is still using the gray cast iron cylinder block, and the all-aluminum material that is more popular in later generations has not been used.

After all, after so many years of development, the engine manufacturing technology and process of our Celestial Empire are still poor according to the international leading level, but the steel to make such an engine is not so laborious.

The most difficult part of an engine to make is mainly the cylinder block of the engine, as well as the cylinder head, and part of the crankshaft, and the camshaft at the top.

First of all, the cylinder body of the cylinder is cast with gray cast iron, and the reason why our country is relatively backward in this piece is because our process is not up to standard, such as the use of molding sand molding, the molding sand system is not well managed, the molding sand cavity is not clean, the temperature control is not in place during pouring, and the time control is not in place.

Therefore, it is this kind of inaccurate process control that often causes a series of problems such as sand holes, cracks, or insufficient service life, or too many waste parts on the engine block after our engine cylinder is cast.

However, these problems have been improved in recent years, especially with the improvement of the level of manufacturing technology.

Jin Xiaoqiang's gear processing factory, there is such a ready-made sand equipment, as well as workers, and everyone is familiar with it, dry molding such work, it has been almost 20 years, so if you strictly follow Jin Xiaoqiang's design drawings to complete a sand mold, it is not much of a problem.

And this time, in order to perfectly turn Jin Xiaoqiang's engine design from the drawings into reality, Ding Weizhong specially found the master of the factory who originally specialized in making gears and bevel wheel sand molds, Master Yang Dingwei.

This master, this year is more than 50 years, since entering the Nanyang State Machinery Factory, has been doing sand design, and sand molding work, this work is 20 years, and then after the factory collapsed, he was directly hired by Jin Guozhu to their gear factory to make gears or other parts for their family.

You must know that when the old man was in the state-owned factory, he not only did the shaping of dry gears, but also the shaping of other people's engines, and even the molding of the machines that were kept secret by the state.

Although in Jin Guozhu's factory, it is a bit overkill, but the old people are also old, and they don't want to toss, they just want to pass on the craftsmanship of their lives, so they concentrate on cultivating successors in the factory.

Not to mention that in the factory, there are really a few good shaper, all of whom are apprentices brought out by this master.

This time, for this engine, Ding Weizhong, a technical madman in the factory, was really crazy, and directly found Master Yang, who was responsible for the work of molding sand molding.

And he himself is studying the casting process of the cylinder head of this engine, after all, their factory produces gears, not specifically producing engines, so these other simple parts are easy to do, but such as the engine block, as well as the cylinder head and other key parts, you must think about how to process and manufacture.

After all, the mainstream trend of international engine materials is lightweight, so most automobile manufacturers choose gray cast iron cylinder block in the manufacture of engines, plus aluminum alloy cylinder head design, so that the weight of the engine can be reduced by at least 10%.

In this way, it can also reduce the weight of the body, so as to achieve the purpose of reducing emissions and saving fuel.

The cylinder head material of this aluminum alloy is generally made of aluminum-magnesium alloy cylinder head, and at present, such aluminum-magnesium alloy can still be produced in our country, but the difficulty is how to form such a cylinder head.

You must know that the cylinder head of this engine is a very critical part of the engine, and every pattern on it, even the channel, has its unique meaning.

Every seemingly inconspicuous change will affect the intake and exhaust functions of the engine, as well as the power that the engine can emit.

And such an aluminum alloy cylinder head forming technology, at present, for Ding Weizhong, is a problem, after all, they used to only produce gears, and those gears really don't need too much technical content to be honest.

You just need to get the molding sand, and then start pouring it with gray cast iron or other steel materials, and then polish and polish it.

But they haven't done such a detailed engine cylinder head, especially how to make molds? And is this type of sand molding technology suitable for the pouring of aluminum alloy?

Everyone has never tried it, so when producing the cylinder head, Ding Weizhong is very bottomless!

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