reborn industrial empire

The first people to appreciate this drawing were of course Ding Weizhong and Liu Xiaoliang.

Liu Xiaoliang majors in automobile design and is also a technical controller in the field of engine design. He is obsessed with all kinds of engine data and indicators.

As soon as Jin Xiaoqiang took out this drawing, a technical geek like Liu Xiaoliang immediately felt 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 at Nanyang Machinery Factory, Ding Weizhong also disassembled the Jetta 1.6 engine.

However, at that time, Jetta's engine was much more backward than it is now, and it still used carburetor technology. Unlike today's engines, the use of electronic injection technology has become a popular trend.

Jin Xiaoqiang's set of design drawings contains hundreds of pages of drawings, large and small, and not only provides detailed design drawings for each component of this engine.

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

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 just anyone can design.

Anyone who can design such an engine must have at least five years of design experience and often deal with engines.

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

The scariest thing is that this guy even clearly marked the allowable tolerances of each component. You must know that the most difficult part of this engine is the setting of tolerance parameters.

After all, many parts are produced with certain deviations from the drawings, and each part is slightly different. Hundreds of parts of various kinds are assembled together, so the overall tolerance value of the engine can be

The difference is huge.

And if there is an error in these data, the performance and service life of the engine will be completely different from the original design.

So far, the major domestic automobile companies have basically no professional design teams. The large state-owned factories in China are now completely assembly plants for foreign-funded companies. They are basically abandoning their martial arts skills in self-design and have no ability at all.

.

As for the engine design of privately-owned independent brands, it has just started to falter, and there is no established concept at all.

For example, Ricky Auto, which is the most famous independent brand in China, simply entrusts Austrian design companies to do their car engine and appearance design teams.

And someone like Jin Xiaoqiang, a newly graduated college student with no experience in engine design, could produce such a drawing. In Ding Weizhong's eyes, this young man is simply a monster.

, is a pure genius!

After all, his engine design drawings appear to be very feasible in theory. As long as the engine can be built according to these drawings, then all theories will be verified.

If all the design theories on this engine are verified and can reach the values ​​that Jin Xiaoqiang originally designed, then this engine will not be considered internationally.

But in China, it can definitely be regarded as an epoch-making invention. After all, this will be the first small-displacement engine designed and independently developed by Chinese people, with an internationally leading level.

Jin Xiaoqiang didn't know how shocked Ding Weizhong was when he saw this drawing. He only knew that he was really exhausted after these ten days.

In his previous life, he had disassembled no less than a hundred of this 1.6-liter naturally aspirated engine, and he had repaired no less than a hundred of them.

Moreover, when he was working in the design team of a certain automobile company, he had personally participated in the disassembly and data measurement of this engine, so he was able to combine the parameters of this engine and the data of each component.

I remember it so clearly.

At that time, they spent a month dismantling and reassembling the engine. Every component had to be photographed when it was disassembled. After it was disassembled, it was photographed and then measured.

It took a month of back and forth to dismantle, measure, and then reassemble it. He was already familiar with many of the data.

It was really not difficult for him to take out this engine at this time, but as for the shock it brought to Liu Xiaoliang and Ding Weizhong, he couldn't care less.

During this period of time, he was really exhausted in order to rush to work on this drawing. Not only did he have to rack his brains every day to figure out the parameters of various parts that he said he remembered in his previous life, but he also had to put them all on paper.

Still have to draw it.

Then, in order to make others believe that this is my original work, I have to list a series of mathematical formulas to verify my theory, to explain why I designed it this way, and why I got such data.

This series of operations could 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. 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 materials used in domestic engines is still the use of gray cast iron cylinder blocks, and the all-aluminum material that will become more popular in later generations has not yet been used.

Therefore, the process requirements for such an engine are not so strict. After all, after so many years of development, although our engine manufacturing technology and processes are still inferior to the international leading level, the steel used to make such an engine

It's not that strenuous.

The most difficult parts of an engine to make are mainly the engine's cylinder block and cylinder head, as well as the crankshaft and the top camshaft.

First of all, the cylinder body of the cylinder is cast with gray cast iron. The reason why our country is lagging behind in this area is because our technology is not up to standard. For example, when using molding sand for molding, the molding sand system is not properly managed, and the molding sand cavity is not clean.

There are various problems such as inadequate temperature control and inadequate time control.

Therefore, it is precisely this imprecision in process control that often causes blisters, cracks, insufficient service life, or too many scrap parts to appear on the engine block after our engine cylinders are cast.

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

Jin Xiaoqiang's gear processing factory already has such ready-made molding sand equipment and workers, and everyone is experienced. They have been doing molding work for almost twenty years, so if they strictly follow Jin Xiaoqiang's

Designing drawings to complete a sand mold is not a big problem.

This time, in order to perfectly turn Jin Xiaoqiang's engine design from drawings into reality, Ding Weizhong specially found Master Yang Dingwei, a master craftsman in the factory who used to specialize in making gears and bevel wheel sand molds.

This old master is over 50 years old this year. Ever since he entered the Nanyang State-owned Machinery Factory, he has been engaged in molding sand design and molding sand shaping work. He has been doing this for 20 years. Later, after the factory closed down, he

He was directly hired by Jin Guozhu to work in their gear factory to shape the gears or other parts they made.

You must know that when the old man was in the state-owned factory, he not only shaped gears, but also shaped other people's engines. He even participated in the shaping of machines that were classified by the state.

His craftsmanship is really good. Although in Jin Guozhu's factory, there is a bit of overkill, but the old man is getting older and doesn't want to bother anymore. He just wants to pass on the craftsmanship of his life, so he concentrates on it.

The factory is training successors.

Not to mention that there are several good sculptors in the factory, all of whom were apprentices brought out by this old master.

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

And he himself is studying the casting process of the cylinder head of this engine. After all, their factory produces gears, not engines, so these other simple parts are easy to handle, but like the engine block and cylinder

To cover such a key part, you must carefully consider how to process and manufacture it.

The cylinder head of this engine designed by Jin Xiaoqiang is made of aluminum alloy. After all, the current mainstream trend in the use of materials for international engines is lightweight, so most car manufacturers choose gray cast iron cylinders in the manufacture of engines.

body, coupled with the aluminum alloy cylinder head design, this can reduce the weight of the engine by at least 10%.

In this way, the weight of the car body can also be reduced, thereby reducing emissions and saving fuel.

The aluminum alloy cylinder head material is generally aluminum-magnesium alloy cylinder head. At present, our country can still produce such aluminum-magnesium alloy, 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. Every pattern on it, even the channels, has its own unique meaning.

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

The molding technology of such aluminum alloy cylinder heads is currently a difficult problem for Ding Weizhong. After all, they used to only produce gears. To be honest, those gears really don't require much technical content.

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

But they have never done such a detailed engine cylinder head, especially how to make the mold? And is this sand molding technology suitable for aluminum alloy casting?

No one has tried it, so when the cylinder head was being produced, Ding Weizhong was particularly unsure!

*********

I am breaking out to give back to all book friends, and I am in great need of firepower support... Please collect it, please recommend it...