During this time, it can be said that the outside is [***] raging, and it is also the time when the trouble is the most fierce, not to mention the capital and Guangzhou and Shanghai in the hard-hit areas of [***].

Even in Nanyang City, there is a constant news that someone dies because of [***] because of incurable, and there are communities that are isolated every day, and now the market can be described as panicking.

Many factories have closed, schools have been closed early, and many shops have also closed.

Jin Xiaoqiang originally wanted to enjoy himself comfortably for a few days, but in the current situation, he had no way to go out and spend all day drinking, so he could only obediently run back and forth between the home and the factory.

During this time, Liu Mei was also relieved from taking care of her mother at home because of Zhang Ningning's appearance, and then worked by Jin Xiaoqiang's side.

To be honest, Liu Mei's uninvited arrival still made Jin Xiaoqiang feel a little surprised, you must know that he had made it clear to Liu Mei some time ago that there was nothing to do on her side during this time, she could stay at home and take care of her mother, and if there was anything she needed help, just mention it to herself and find a way to solve it herself.

After all, Liu Mei's mother is still unconscious, and now it is also [***] raging outside, in case Liu Mei is accidentally infected, then how can he Jin Xiaoqiang go.

But I don't know what this Liu Mei thinks, since they developed the first transmission hy200 (the original MQ200) a few days ago, one came out of the house and followed Jin Xiaoqiang's side.

Even when Jin Xiaoqiang didn't need any help, this girl kept following Jin Xiaoqiang's side and pouring tea and water, which made Jin Xiaoqiang feel very surprised.

He could feel that Liu Mei seemed to have something and wanted to tell himself, but he didn't know how to tell himself.

A woman's mind is never guessed by men, Jin Xiaoqiang can't understand why Liu Mei behaves so strangely, so he doesn't think about it anymore, although he is a little embarrassed, but since Liu Mei is willing to do it, it can only be done by her.

And during this time, there was just time, and Jin Xiaoqiangsuo began to study its transmission.

In fact, as far as the future development direction of the car is concerned, in the case that the potential of the engine has been almost exerted to the extreme, the quality of a car in the future, the important surname of the transmission, is particularly prominent.

The so-called potential of the engine has been exerted to the extreme, because of the strict requirements for the car surname energy in the future automotive industry, especially in the engine.

For example, in the seventies and eighties of the last century, it was the world of high-power engines, and the oil price was not expensive at that time, so people did not consider the problem of fuel costs at all, so the American cars were particularly good to buy at that time, because at that time American cars were synonymous with luxury and luxury, with large space, strong power and luxurious interior.

However, since the mid-80s, human beings' demand for automobiles has also undergone different changes, with the depletion of the earth's oil resources, ordinary drivers need to face high fuel costs, as well as the concept of environmental protection, as well as the future of countries on car emissions regulations.

As a result, the future automobile engine can only develop more and more towards miniaturization and fewer cylinders.

Like the six-cylinder, eight-cylinder, or even twelve-cylinder configuration of the 80s of the last century, it can only appear in the configuration of luxury cars.

In the future, as a means of transportation for ordinary families, family cars generally only need four cylinders, or even three cylinders.

Since then, the engine engineers have racked their brains, developed a variety of technologies, and constantly improved the engine, and it can almost be said that all kinds of technologies that can be applied have been used in the four-cylinder engine, which has raised the potential of the engine to a certain level, which is already difficult to break through.

At this time, if you want to compete with those foreign car manufacturers, then you have to consider the other aspect of the powertrain, the transmission.

After all, since the current domestic independent brand automobile companies in the transmission itself is a short board, and if they develop a transmission that is not weaker than the international standard, then it will be a big selling point when launching a new car.

As we all know, there are three key parts of the car, the engine, the gearbox and the chassis, and now the engine has solved a small part, and the chassis does not need to be considered now, but the transmission must be put on the road as soon as possible.

Although Jin Xiaoqiang has copied Volkswagen's MQ200 and MQ250 during this time, two manual transmissions, these two manual transmissions, are indeed very superior, but after all, manual transmissions also have their shortcomings, that is, cumbersome, in the future city, there will definitely be more and more vehicles, when the car stops and goes, then the use of manual transmissions will definitely make people's left foot very tired, after all, you have to keep stepping on the clutch.

So there is no doubt that automatic transmission will definitely become the mainstream equipment of future cars.

As an automatic shifter, there are several types of transmissions, such as AMT, AT, CVT, and DSG.

As a reborn and experienced automotive engineer with more than ten years of experience, Jin Xiaoqiang undoubtedly has the clearest and most intuitive judgment on the development trend of future automotive transmissions.

First of all, the AMT and CVT automatic transmissions can be eliminated, although they have their own advantages, but the disadvantages are also obvious.

Although AMT is more fuel-efficient, it has a strong frustration of shifting, and its electronically controlled shifting, as well as the clutch part, are particularly easy to damage, and the maintenance cost is also very high, so it has not been popularized on a large scale.

The CVT is the so-called continuously variable transmission, which has also been popular in the automotive industry for a while, and its advantages are obvious, that is, it uses the chain transmission mode of the bicycle to work, so there is no transmission gear in the gearbox, so there is no frustration when shifting, and the fuel consumption is smaller than other transmissions, and the noise is low.

But its shortcomings are also fatal, first of all, in the starting or acceleration stage of the car, the metal chain or belt as the transmission torque is easy to slip, and generally after 50,000 to 100,000 kilometers, the chain or belt needs to be replaced.

Moreover, the CVT gearbox is prone to problems, and once it goes wrong, it is a big problem, and it is very expensive to repair.

So in this way, the remaining two objects to choose from are at and dsg.

AT is a transmission that automatically shifts gears through hydraulic pressure, when the engine is working, the horsepower will drive the hydraulic pump wheel, and the pump wheel will make the liquid in the gearbox circulate quickly, and the circulating liquid will drive the turbine in the gearbox, and the rotation of the turbine will eventually drive the guide wheel, and the guide wheel can make the outside car wheel rotate, so as to complete the power output to the outside world.

At present, this technology is very mature, and it has always been the mainstream in automatic transmissions, and the mainstream on the market is 4AT, that is, hydraulic transmissions with 4 gears.

His disadvantage is that it consumes fuel and is frustrating when changing gears, so that the driver does not feel too much fun driving.

However, when Jin Xiaoqiang was reborn in later generations, it had basically been popularized to 6AT automatic manual transmission, and even some luxury cars had begun to use 8AT, or even 10AT automatic manual transmission.

For the civilian version of the 6AT manual automatic transmission is enough, its shift frustration is small, and the fuel consumption is also small, basically comparable to the pure manual transmission, the only drawback is that the cost is slightly higher, equipped with a low-priced car for the manufacturer, a little bit not easy to price.

The so-called DSG is the dual-clutch transmission, and the development direction of this ideal transmission in the future is actually to use two sets of clutches to control the gear selection.

When the car is in the first gear, the second gear is already in a ready state, when the speed of the car, or the output power of the engine reaches a certain peak, the other gear gears are automatically closed, and the clutch of the first gear will automatically open, and the second gear will be activated at the same time.

The result is a perfect gear change, no frustration in between, and fuel efficient.

Of course, just before Jin Xiaoqiang's rebirth, this dual-clutch transmission also had quite a problem without a breakthrough, such as due to urban parking, stop-and-go, because the dual-clutch has a group of clutches in standby mode for a long time, it will cause the gearbox to overheat, or even catch fire, and wear will intensify.

And the second-gear shake car, the gearbox dust and other problems have not been properly solved.

Therefore, although DSG will become the development direction of mainstream transmissions in the future, in the last ten years, it is still the hydraulic transmission, that is, the AT gearbox, which is the most suitable choice for Jin Xiaoqiang.

And Jin Xiaoqiang has now drawn out a drawing of the current mainstream 4AT transmission, of course, it is a copy of the 4AT gearbox of Aisin, but some improvements have been made.

After all, the 4AT in 10 years is more or less different from the current 4AT.

In fact, in the AT transmission, there are two of the most outstanding one is the German ZF company, his hydraulic transmission is really good, but the cost is also high, so it is generally matched in BMW, Mercedes-Benz, Audi and other relatively high-end models.

Aisin's 4AT, which is much more civilian, most of them are matched with more common civilian cars, Toyota, Mazda, Opel, etc. all use Aisin's 4AT.

It is precisely because of this civilianization and cost control problems that Jin Xiaoqiang chose this Aisin's 4AT to copycat.

At the same time, in the factory, Ding Weizhong and Yang Dingwei have basically summarized the production process and process of the MQ250 transmission.

In just a few months, he 'designed' three engines and two transmissions, and also proposed the principle of CVVT and DVVT technology, that is, the news has not yet been released, if it is released, Jin Xiaoqiang will definitely become a celebrity in the Tianchao automobile industry immediately!

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There is an industrial empire on the click list, but there is still wood on the recommendation list, everyone is giving some force, let the ants fly on the list for a while, please ask for the recommendation votes of the big guys......

In addition, I would like to thank the leaves of Honolulu, the passers-by of the world, and the tips sent despite the greeting cards