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However, while getting the gasoline engine of this car, Jin Xiaoqiang also took into account another fuel switching problem of this car.

Mazda's two Skyactiv engines are not only awesome because they can achieve a combustion ratio of 14:1, but also because of the car's engine adaptability to fuel.

It is important to know that the general in-cylinder direct injection engine has quite high requirements for fuel specifications.

For example, the ECOBOOST engine that Jin Xiaoqiang and his current invention have now invented, the key reason why this engine can achieve an air-fuel ratio of 15 to 1 is that the nozzle used for direct injection in the cylinder can spray a mixture of oil mist thinner than a human hair.

But in this way, employment also means that the specifications of this engine for gasoline will be particularly high, in foreign countries he needs to add 97 gasoline, but in China because of the leadership of the Celestial Empire Petroleum and Petrochemical, to drink the relationship between Moutai and Lafite, so the progress in petroleum refining has always been small, the current highest domestic gasoline is 95, and although it is 95, but the specifications of foreign 93 gasoline are about the same.

Therefore, Jin Xiaoqiang and they had to lower the standard of the nozzle for direct injection in the cylinder of the domestic ECOBOOST engine, because if they did not do this, they would face the problem of blockage of the nozzle for a long time.

In this way, the air-fuel ratio that this engine can achieve when using domestic gasoline, that is, about thirteen to one, although it cannot be compared with the one they buy abroad, but this is also because of the restrictions of realistic conditions, not that they want to discriminate.

But at present, there are very few cars in China that can achieve an air-fuel ratio of thirteen to one!

In terms of adapting to various types of fuel, Mazda's Skyactiv engine is undoubtedly a model.

The in-cylinder nozzle used in this engine is a six-hole injection nozzle, which is more adaptable to various types of gasoline, although he cannot spray a mist of one-fifth of the fineness of a human hair like the nozzle of the ECOBOOST engine, but he can spray more oil.

Therefore, the nozzle of this engine is more adaptable to fuel.

However, Jin Xiaoqiang is currently using the technology of the nozzle, which is provided by Bosch, and now it can only produce a four-hole nozzle, and if you want to achieve six holes, it needs more technical adjustments.

However, because they have already obtained two fine grinders from Bosch for grinding the nozzle parts, it is not too difficult to complete the grinding of the six-hole nozzle, as long as the corresponding modification of the parts can be completed.

Jin Xiaoqiang even wondered if once the grinding of the six-hole nozzle was completed, would the ECOBOOST engine be replaced with such a nozzle, so that he would like to see if the air-fuel ratio of this engine would be further improved.

Mazda's Skyactiv engine uses a six-hole injection nozzle, but the engine's adaptability to gasoline specifications is truly unparalleled.

Jin Xiaoqiang remembers very well that at present, the specifications of the engine using in-cylinder direct injection technology are quite high, even in foreign countries, which is the main reason why the in-cylinder direct injection technology has not been popularized in a large area so far.

Low-specification gasoline has many internal impurities, and when the direct injection technology in the cylinder encounters such gasoline, the problem of nozzle blockage often occurs after tens of thousands of kilometers of travel.

And Mazda's engine is fully able to adapt to this, remember the last life, this engine, even if you add 87 gasoline abroad, it is also good, of course, people's 87 gasoline, but also equivalent to 92 in China, or 93 gasoline.

This will bring the engine a benefit, which is that it is also easy to use even when using methanol gasoline.

In fact, Jin Xiaoqiang has long been thinking about the use of methanol gasoline, as we all know, methanol gasoline, in fact, is to directly mix methanol and gasoline according to the ratio of 4:1, and add a little corrosion inhibitor.

Because the calorific efficiency ratio of methanol is lower than that of gasoline, it can only reach about 45% of gasoline, so when the weather is cold, it will be more difficult to start with pure methanol, so it is necessary to mix gasoline and methanol to a certain extent to achieve a more ideal effect. …,

And because it is precisely because of the low thermal efficiency ratio of methanol that it is necessary to increase the amount of methanol injected to achieve the same effect as gasoline, and this six-hole nozzle can achieve this effect.

In fact, methanol gasoline really appeared during World War II, when the Germans began to study a new type of fuel because of the shortage of oil, which was actually methanol obtained by using coal hydrogenation technology.

However, in World War II, this fuel was not widely promoted, because methanol fuel would corrode rubber oil pipes and damage fuel tanks.

However, with the development of industrial technology, the current automobile has long ceased to use rubber hoses as pipelines for oil transportation, and the material used in the fuel tank has been greatly improved than before, so the problems of methanol corrosion rubber hoses and so on can be said to have long ceased to exist.

The reason why he was not able to popularize it on a large scale before was only because before, the supply and demand of oil in the world were not particularly tight, but after the oil crisis in the 70s, Americans and Japanese began to study this methanol gasoline.

Now in the United States and Japan, there are a considerable number of large trucks, buses are using methanol gasoline, so this technology can be said to be quite mature.

And Jin Xiaoqiang firmly believes that with the increasing oil prices, this methanol gasoline should have a broader market in the Celestial Empire, after all, our coal resources are too rich.

And the use of methanol gasoline has another advantage, that is, it can clean the oil road, as we all know that the car is after tens of thousands of kilometers, often on the oil road viscous attachments, and carbon deposits, and the use of methanol gasoline, you can clean these magazines and carbon deposits, which has great benefits for cleaning the oil circuit and cylinder of the car.

Therefore, if you want this car to be able to burn methanol gasoline at the same time, you only need to make certain adjustments on the ECU of the car and install a control switch in the car.

After the car is filled with methanol fuel, as long as the pressure of the booster pump is increased, it can inject more methanol fuel, which can achieve the same effect as burning gasoline.

Moreover, methanol gasoline has better knock resistance because of its high octane content, which will further enhance the smooth driving and noise control of the car.

The most important thing is that if methanol fuel is used, the fuel cost of the whole vehicle will be about half lower than that of gasoline.

Jin Xiaoqiang believes that as long as this gimmick is taken out, it will definitely be a big selling point at that time, although not all people can accept methanol gasoline, after all, methanol is toxic, but this gimmick, you can still consider hyping it, after all, the oil price is too high, but in the next few years, it has been a problem that has attracted attention in China.

However, this is only a preliminary idea that is not yet too mature, and it has not yet been able to be verified until this engine is born.

The relationship between the engine and transmission of a car is like a strong heart and a strong muscle.

If you have a strong heart, but you don't have strong muscles, then you can't do what you want.

Now Jin Xiaoqiang has invited a makeup master Peter to this K series. Rishier, who gave the car a beautiful shape, and he himself designed a strong heart for the car, then the next step is to add a strong muscle to the car, that is, a stable transmission.

For this car, because the positioning is higher than that of the eMotion, but lower than the setting of the Qoros series, this car must also come up with a bright spot in terms of transmission.

In fact, Jin Xiaoqiang doesn't need to think too much, all he has to do is to equip the original Mazda with a transmission for this series of cars.

Mazda's transmission in SKYACTIV's technology is just a 6AT transmission, although it is also a hydraulic transmission, but the effect of this transmission is very ideal, and he can even make the fuel consumption of this transmission comparable to that of a manual transmission.

The Orbi is nothing more than a lock-up clutch device added to this set of hydraulic transmissions.

As we all know, the power loss of hydraulic automatic transmission is mainly on the torque converter that transmits power while cushioning the impact of shifting.

The principle of the locking clutch is actually that the torque converter is equivalent to two sets of fans, and the locking clutch is equivalent to some bolts to fix the two sets of fans together.

That is to say, when the gear shift is completed, the hydraulic torque converter is locked, which is equivalent to the hard connection between the engine and the transmission gear set, so that the transmission efficiency of the hydraulic transmission can be equivalent to that of the manual transmission.

Such a small change may be a mundane invention in a few years, but in this day and age, it is a very remarkable idea.

You must know that the current popular hydraulic automatic transmission on the market is only a five-speed automatic transmission, and the six-speed automatic transmission can only be equipped with high-end models, and has not yet been popularized in a large area, but if this technology is taken out at this time, it is definitely a quite remarkable invention! . ）