It's the middle of the month, everyone should have a monthly pass in their hands, give a few to the ants!

Ford's transmission adopts a wet structure, which means that the gearbox is full of lubricating oil, and the gears are lubricated by the lubricating oil to gnaw at each other.

While the lubricating oil plays a lubricating role, it should also play a role in highlighting the friction and protecting the gears, synchronizers, bearings and other components.

At the same time, the lubricating oil itself must have good thermal stability, oxidation stability, and anti-rust functions, and also play a role in cooling the inside of the transmission.

It is necessary to know the working principle of the dual-clutch transmission, that is, when the car is working in one gear, another group of clutches will be in standby mode, so that if it is driving in a congested urban area, there will often be a group of clutches inside the transmission in the standby state, which will cause problems such as excessive oil temperature inside the gearbox.

Although the lubricating oil inside the transmission will be water-cooled or air-cooled by the oil cooler, it still has to face the problem of high oil temperature.

After all, they just use ordinary engine oil, and because of the working principle of the dual-clutch transmission, what this transmission needs is a special oil with better cooling and more prominent thermal stability.

Such engine oil may be ubiquitous in a few years, but now it is still very rare at the beginning of the popularization of dual-clutch transmissions.

Even Volkswagen was stumped by such a problem, and finally even had to use a dry dual-clutch transmission without lubrication, which shows how difficult this problem is.

Volkswagen's 6-speed wet dual-clutch transmission was launched and soon encountered such a problem, but at that time, Volkswagen gave an answer that the oil temperature sensing element inside the transmission was not up to specification, and so on, so the problem was covered up.

Later, when the vehicle was recalled, all the cars were replaced with 6AT transmissions, and later when the dual-clutch transmission was promoted, it was simply replaced with a 7-speed dry dual-clutch transmission, so that it would not be troubled by the problem of excessive lubricating oil temperature.

However, the dry dual-clutch also has its disadvantages, that is, it cannot withstand too high torque, once the engine power is too large, and the torque exceeds 200 Nm, this transmission is difficult to cope with.

So this is also the reason why Jin Xiaoqiang did not use a dry dual-clutch transmission, because the ecoboost engine of his car is a powerful big guy, and the use of dry dual-clutch will definitely not be able to cope with it.

That's why he copied this Ford's wet dual-clutch transmission, but now the mechanical design of the machine, component processing and assembly are no longer a problem at all, but he didn't expect to be stumped on the problem of oil temperature cooling.

Dual-clutch transmission, because the shift response is fast, so the exchange of gears inside the transmission and other work is very frequent, so after the gearbox works for a period of time, the oil temperature is generally very high.

When ordinary automatic hydraulic transmissions are working, the internal oil temperature is also very high, generally reaching about 90 degrees to 120 degrees, so the popular transmission lubricants on the market are generally developed for this temperature.

And Jin Xiaoqiang's dual-clutch transmission, the temperature to be generated when working is much higher than this temperature, especially the first and second gears, such high-torque gears, and these two gears are the necessary gears when the car starts, so the oil temperature inside their transmissions often exceeds 120 degrees, and sometimes even more than 150 degrees.

Once this temperature is exceeded, the temperature sensing element inside the transmission will strike, which will lead to problems such as the strike of the transmission, the steep stop of the car, and the breakdown.

In order to solve this problem, Jin Xiaoqiang and several transmission engineers have been in their laboratory for several nights in a row.

Fortunately, they no longer work in their old gear factory, and now the laboratory and smelting center they built on the site of the old steel mill have long been built and put into use.

There is sufficient logistics equipment here, and there is even a rest room in the design laboratory, so when you are tired from research every day, you can go to the rest room to sleep when you are sleepy.

In this way, Jin Xiaoqiang has been working here for six days in a row, but this problem has still not been solved.

In the past few days, they have used various means to adjust the problem of oil cooling, but the trial and try are not ideal.

They have tried to change the structure of the oil cooler, increase the length of the cooling water pipe, or try air cooling, but the results are not ideal.

Either it doesn't solve the problem at all, or it can solve the problem, but it requires major surgery on the entire transmission, but in this way, the weight of the transmission will be increased, or the entire structure will be changed, which will cause considerable difficulties in the matching of the transmission and the engine.

Jin Xiaoqiang never thought that when he thought that the golden finger that he thought was quite powerful, he would be stumped by a lubricating oil this time?

It is true that in later generations, in order to cope with the emergence of dual-clutch transmissions, many petrochemical companies have adjusted their own technology and developed corresponding thermally stable lubricants that can better lubricate them, and even the petrochemicals of the Celestial Empire can make lubricants specifically for dual-clutch transmissions.

But that will wait until a few years later, where does he Jin Xiaoqiang have time to wait for a few years, he has already boasted in the media in Germany and the Celestial Empire that he is going to launch a new car at this year's Frankfurt Motor Show.

But now there is less than a month left, but he is stuck on the lubricating oil of this transmission, and he has not been able to make progress for a long time, how can this not make him anxious?

He copied the original Ford's dual-clutch transmission, but why didn't Ford encounter such a problem when he launched this transmission in his previous life?

That's because four years later, the technology of this lubricating oil has matured, especially in countries with developed chemical technology like the United States, and people have solved the problem of equipping the dual-clutch transmission with corresponding lubricating oil after a few years of hard work, so once Ford's transmission is launched, it will be praised and affirmed, and there is no problem like Volkswagen.

But now it's not a few years later, even Volkswagen is bothered by this oil cooling problem, and they are trying to figure out how to solve this problem!

How hard is this question? Just look at the fact that Volkswagen was cornered in the end, and had to switch to a seven-speed dry dual-clutch transmission.

Before you know it, it's September 5th, and it's not much time left until the Frankfurt Motor Show.

The Frankfurt Motor Show is one of the world's four famous motor shows, with a history of more than 100 years, it can be regarded as a grand event for global car manufacturers, and every year exhibitors from all over the world bring their new products to the Frankfurt Motor Show.

This auto show is generally held in the middle of September, and the opening of this year's Frankfurt Motor Show is September 18, and not long ago Wang Jiao has gone to Frankfurt to prepare for related matters.

According to the results of the discussion between Jin Xiaoqiang and the company's senior management, what they will exhibit at the exhibition this time is their newly developed two concept cars of Regal and LaCrosse, and then they will bring the tough guy series.

However, in terms of powertrain, they will bring the prototype of the EcoBoost and dual-clutch, and the real production car may not be launched until next year's Shanghai Auto Show to meet the majority of car enthusiasts.

After all, even if Jin Xiaoqiang's golden finger is strong, it is impossible to make so many production cars in a few months, so bringing a few concept cars is already a very NB embodiment.

And the focus of this hype is the EcoBoost engine and their upcoming dual-clutch transmission, now the engine is no problem, but the transmission is stuck, Jin Xiaoqiang and the other senior management of the company are extremely anxious.

The company's senior management saw that the transmission could not be overcome because of the problem of lubricating oil, and also persuaded Jin Xiaoqiang to match the company's 6AT transmission if it didn't work, after all, the technology of this transmission is still relatively mature, and the company can produce it at present, which can be said to be no difficulty.

But Jin Xiaoqiang just didn't agree, because he knew that their 6AT might be enough if it was paired with a 4-cylinder Ecoboost engine, but it would be difficult to deal with the V6 Ecoboost, so it was best to take out the dual clutch transmissions now.

And since Volkswagen launched the dual-clutch transmission last year, it has not yet been listed, but at present, this concept has been hyped in the market, and Jin Xiaoqiang does not want to be left behind.

And just this year, because of the emergence of Jin Xiaoqiang and Huayang Power, the public also felt the pressure, and they planned to introduce the dual-clutch transmission products that were originally planned to be introduced into the Celestial Empire in 05 years, and they will be introduced to the mainland market at the end of this year.

So this makes Jin Xiaoqiang feel more pressure, he is not only planning to fight against the public, for the current two cars, he has put a lot of effort into it, but he plans to take it out and fight against BMW, Mercedes-Benz this level of cars.

So how can you give up halfway and plant this transmission on top now? He really felt that he was not convinced!

The company's senior management couldn't resist Jin Xiaoqiang, and in the end, everyone could only say that Jin Xiaoqiang must take the sample car to Frankfurt on September 15.

If the problem of high internal temperature of the transmission can still be solved before then, then the car and the company's 6AT can only be used as a substitute for the temporary appearance at the auto show.

This is the backup plan, although the configuration of such a car is not low, and the technical content can be said to be quite high, but Jin Xiaoqiang's heart is still unhappy.

The 6AT transmission, in his opinion, is not worthy of their current car, and it feels that the technical content is the first grade compared to BMW and Mercedes-Benz!

(To be continued)