reborn industrial empire

Ten years later, this Chuangchi Blue Sky will definitely become a classic among engines, and its most commendable thing is of course the combustion ratio that this engine can achieve.

As we all know, the optimal combustion ratio of air and gasoline is 14.7:1. That is to say, the closer the combustion ratio of a car is to this value, the more fuel-efficient it will be, using the least amount of fuel to achieve the best power improvement effect.

In recent years, various technologies used in engines, such as variable valve timing technology, turbocharging, in-cylinder direct injection, etc., are all designed to increase the proportion of air during gasoline combustion, making the engine

Only the least amount of fuel is used to achieve the best combustion effect.

Major car manufacturers in later generations have popularized turbocharging and direct injection technologies that were originally only used in luxury high-end cars to ordinary family-level cars, in order to maximize the power output without reducing power output.

fuel-efficient, and rely on these technologies to compete for consumers.

And this Chuangchi Blue Sky technology was actually born under this background.

It's just that Jin Xiaoqiang's ecoboost engine can be said to be able to adapt to engines with more cylinders and larger displacements, such as V8 or even V10. And this Chuangchi Blue Sky has been completely based on the engine since its birth.

The purpose is to save fuel, so this engine only appears on a 4-cylinder engine from beginning to end.

And strictly speaking, this Chuangchi Blue Sky technology engine is essentially different from the ecoboost engine that Jin Xiaoqiang and the others developed before. It only uses in-cylinder direct injection technology and variable valve timing technology.

It's integrated, but the turbocharger is just an optional feature.

However, compared to the ecoboost engine originally invented by Ford, Mazda's engineers were bolder, more direct and thorough.

You must know that the technologies of the current mainstream 4-cylinder engines in the world are actually similar. The layout of the cylinders, as well as the exhaust and intake arrangements are also not much different. In fact, the biggest difference between the engines of the major manufacturers is whether

Adjustments will be made to the engine's ECU, or there may be differences in some small details.

But generally speaking, it will not change the intake and exhaust patterns of the engine. You must know that these have been determined through thousands of experiments by predecessors.

But this time Mazda's engineering was very bold. They extended the exhaust path of this engine. Originally, most engines used a 4-1 exhaust method, which means that the exhaust pipe of each cylinder extends from the cylinder.

After coming out, it merges directly into a large exhaust pipe to discharge the car's exhaust gas directly to the outside.

The 4-planing exhaust method redesigns and arranges the direction of the exhaust pipes after they extend from the cylinder block, connecting them two by two. However, it extends the length of the exhaust pipes, and finally merges into the main body.

On the exhaust pipe.

In fact, the four-cylinder automobile engines currently on the market are not unable to achieve high compression ratios. In fact, as long as turbocharging is used to increase the pressure of the intake manifold, more air can be pumped into the cylinder, making the cylinder

It is possible for the air and fuel to reach or exceed the optimal combustion ratio.

However, there are several insurmountable problems here. For example, because the intake pressure is high, the exhaust pressure will also increase. As a result, during the exhaust process, some gas will be difficult to discharge cleanly and will appear again.

Returning to the combustion chamber, it seems that the temperature of the combustion chamber is too high, and during the return process, it will collide with the exhaust gas, causing a series of problems such as engine explosion and crash.

These problems have troubled many engine engineers for many years, but have never been solved.

Therefore, in ordinary engines currently on the market, the combustion ratio is generally 8:1 or 9:1.

Even lower, even if turbocharging technology is used, the air-fuel ratio is generally around 10:1.

Even after in-cylinder direct injection technology is used in gasoline engines, in theory, the air-fuel ratio of a gasoline engine using this technology can reach more than 14:1, or even reach dozens to one. It is not difficult.

But in reality, there are very few engines that can actually do this. Even Toyota, which is a leader in in-cylinder direct injection technology, can only do this in the laboratory, but it cannot be truly applied in mass production.

They cannot easily increase the air-fuel ratio of their engines to 14:1 on the engines they produce.

At present, the best one that can achieve the best air-fuel ratio is the ecoboost engine invented by Jin Xiaoqiang and others. The air-fuel ratio that that engine can achieve is only about 15:1. This is currently

In the market, this is already a very remarkable achievement.

In later generations, it was not until Mazda announced this engine with Chuangchi Blue Sky technology that the problem of engine explosion was solved by increasing the air compression ratio. This is also the reason why Mazda is so popular, because they are the first

A manufacturer that has made an engine with such a high air-fuel ratio available to the masses.

Mazda's engineers found that the best way to solve the problems of knocking and crashing is to extend the path of the engine exhaust. It is this long path that can reduce the gas in the combustion chamber and reduce the top dead center of the compression stroke.

temperature, very effectively solves the knocking problem caused by high compression ratio, and this technology can also better adapt to various types of gasoline sold on the market.

It is this engine that truly brings civilian engines into an era of higher combustion ratios.

And it is precisely because of the outstanding fuel-saving performance of this engine that this car became very popular once it was launched.

While changing the length of the exhaust path, engineers also redesigned the engine's piston. They designed a depression on the top of the piston. The purpose of this is to make the engine burn more efficiently when it is working.

Supplemented by variable valve timing technology, the performance of this engine in terms of combustion efficiency and torque is directly improved by more than 15%!

These conclusions, which were arrived at through the hard work of later generations of Japanese engineers, now all belong to Jin Xiaoqiang in just a few days.

When Liu Xiaoliang watched Jin Xiaoqiang complete the first draft design of this engine, he could only scream in his heart that his old friend was a pervert.

Otherwise, who could rebuild such a complex engine in just a few days?

You must know that for experienced car people like them, it is too easy to draw a four-cylinder engine, but if you want to redesign one, everyone knows how difficult it is.

After all, even if you are making changes to the original ordinary 4-cylinder engine, you must be well-reasoned and you must come up with your own arguments to support why you are doing this.

For example, Jin Xiaoqiang strengthened the compression ratio this time, which made Liu Xiaoliang very puzzled. You must know that before this, even engines using in-cylinder direct injection technology, generally speaking, everyone believed that the in-cylinder combustion ratio of the engine

It is not easy to achieve 14:1 because it requires a large pressure pump.

Moreover, the current in-cylinder direct injection technology they mostly use is used in the V6 engines they produce. The exhaust path of V6 engines is long, so the problem of knocking can be easily solved.

But if you want to apply these technologies to a 4-cylinder engine and effectively solve the problem of cylinder knocking, it will be enough to make an engineer scratch his head.

At first, Li Qiming thought that miniaturizing the ecoboost engine was very simple. He simply followed Jin Xiaoqiang's drawings and modeled the ecoboost he designed, but the result surprised everyone.

The 2.0-liter ecoboost engines he drew often experienced problems such as detonation and crashes after they were made and used in tests. Li Qiming tried many methods but could not solve them.

It wasn't until he finally found a new way to reduce the pressure of the pressure pump and redesign the nozzle that he solved the problem.

What's more, what Jin Xiaoqiang is doing now is to redesign an engine. He just changed the path and length of the exhaust manifold to achieve the effect of increasing the combustion ratio of this car. Liu Xiaoliang was at the beginning.

Sometimes, I don’t believe anything.

Finally, after seeing the countless mathematical formulas listed by Jin Xiaoqiang, he finally understood the feasibility of this method.

Moreover, Jin Xiaoqiang also redesigned the piston of the engine, which may be derived from ecoboost.

Where did you get the experience?

This engine does not need to be equipped with a turbine, which is the biggest difference between this engine and ecoboost.

However, the diesel version of this engine must be equipped with a turbine, but now is not the time to consider that.

While redesigning the exhaust manifold of this engine, Jin Xiaoqiang also used new materials in many places in the cylinder block, which greatly reduced the weight of the engine.

For example, in terms of curved rails, connecting rods, etc., while ensuring strength, he tried to make these accessories as lightweight as possible. Although each of these accessories is not too big, if they are assembled together, their total

The weight is quite astonishing.

You must know that Chuangchi Blue Sky technology is not just an engine technology, it also includes technologies such as weight reduction of the car body!

After drawing a sketch of this engine, Jin Xiaoqiang planned to start working on the body, chassis, and gearbox technology of Chuangchi Blue Sky Technology.

You must know that the Chuangchi Blue Sky announced by Mazda was definitely not just for the engine. This technology was a technological revolution for the entire body, including from the body to the chassis, to the engine and gearbox.

Wait a minute.!.