reborn industrial empire

During this period, it can be said that SARS was raging outside, and it was also the time when the commotion was at its worst, not to mention Beijing, Guangzhou, and Shanghai, which were the hardest-hit areas by SARS.

Even in Nanyang City, news of people passing away due to SARS without treatment comes out every day, and communities are quarantined every day. Now the market is full of panic.

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

Jin Xiaoqiang originally wanted to enjoy a few days of relaxation, but in the current situation, he couldn't go out and have fun, so he could only run back and forth between home and the factory.

During this period, because of Zhang Ningning's appearance, Liu Mei pretended to be relieved from taking care of her mother at home, and then worked beside Jin Xiaoqiang.

To be honest, Liu Mei's uninvited visit still surprised Jin Xiaoqiang. You must know that he had made it clear to Liu Mei some time ago that he had nothing to do during this period, and she could stay at home to take care of her. Mom, if you need any help, just mention it to yourself and figure out a solution yourself.

After all, Liu Mei's mother was still in a coma, and SARS was raging outside. If Liu Mei was accidentally infected, how could Jin Xiaoqiang be so complacent?

But I don’t know what Liu Mei was thinking. A few days ago, after they developed the first transmission hy200 (original mq200), one came out of home and followed Jin Xiaoqiang around.

Even when Jin Xiaoqiang didn't need any help, this girl always followed Jin Xiaoqiang and served tea and water, which made Jin Xiaoqiang feel very surprised.

He could feel that there was something wrong with Liu Mei, and he wanted to tell him, but he never knew how to tell himself.

Men can never guess a woman's thoughts. Jin Xiaoqiang couldn't understand why Liu Mei behaved so strangely, so he simply stopped thinking about it. Although he was a little embarrassed, but since Liu Mei was willing to do it, he could only do it. Maybe it's up to her to do it.

During this period of time, Jin Xiaoqiang just had time to start studying its transmission.

In fact, in terms of the future direction of automobile development, when the potential of the engine has been almost maximized, the importance of the transmission will become particularly prominent in determining the quality of a future car.

The so-called engine's potential has been maximized because the future automobile industry will have strict requirements on automobile performance, especially the engine.

For example, in the 1970s and 1980s, the world was dominated by high-power engines, and the price of oil was not expensive at that time, so people did not consider the issue of fuel costs at all. Therefore, American cars were particularly good at that time, because they were At that time, American cars were synonymous with luxury and luxury, with large space, strong power and luxurious interiors.

However, from the mid-1980s to the present, human beings' most demanding needs for cars have also undergone different changes. As the oil resources on the earth are gradually depleted, ordinary drivers need to face high fuel costs, and people are increasingly paying attention to The concept of environmental protection and the rigid regulations on automobile emissions in various countries in the future.

As a result, future automobile engines can only develop towards increasingly smaller sizes and fewer cylinders.

Configurations like those in the 1980s that often featured six, eight, or even twelve cylinders could only appear in luxury cars.

In the future, family cars that will be used as transportation tools for ordinary families will generally only need four cylinders or even three cylinders.

Since then, engine engineers have racked their brains, developed various technologies, and constantly improved the engine. It can be said that almost all applicable technologies have been used on four-cylinder engines, making the engine

The potential has increased to a certain level, and it is already a state that is difficult to break through.

At this time, if we still want to compete with those foreign car manufacturers, we have to consider another aspect of the powertrain, the transmission.

After all, the domestic independent brand automobile companies currently have shortcomings in transmissions. Secondly, if they develop a transmission that is not inferior to international standards, it will also be a big selling point when launching new cars.

.

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

Although Jin Xiaoqiang has copied Volkswagen's mq200 and mq250 during this period, two manual transmissions, these two manual transmissions are indeed very superior, but after all, the manual transmission also has its shortcomings, that is, the operation is cumbersome, and in the future

In the city, there will definitely be more and more vehicles. When the time comes for cars to stop and go, then using a manual transmission will definitely make people's left foot tired. After all, they have to keep pressing the clutch.

Therefore, there is no doubt that automatic transmission will definitely become the mainstream configuration of future cars.

As for automatic shifting transmissions, there are several categories, such as amt, at, cvt, and dsg.

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

First of all, the two automatic transmissions, AMT and CVT, can be eliminated. Although they each have their own advantages, their shortcomings are also obvious.

Although AMT is more fuel-efficient, it has a strong sense of frustration when shifting, and its electronically controlled shifting and clutch parts are particularly easy to damage, and the maintenance cost is also high, so it has not been widely popularized.

The CVT is the so-called continuously variable transmission, which has been popular in the automotive industry for a while. Its advantage is obvious, that is, it uses the bicycle chain transmission method to work, so there are no transmission gears in the transmission box.

There is no frustration when shifting gears, the fuel consumption is lower than other transmissions, and the noise is low.

But its shortcomings are also fatal. First of all, when the car is starting or accelerating, the metal chain or belt used to transmit 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. Once a problem occurs, it will be a big problem and it will be 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 means. When the engine is working, the horsepower generated will drive the hydraulic pump wheel, and the pump wheel will quickly circulate the fluid in the gearbox, and the circulation

The liquid drives the turbine in the gearbox, and the rotation of the turbine will eventually drive the guide wheel, which can turn the wheels of the car outside, thus completing the power output to the outside world.

At present, this technology is very mature, and it has always been the mainstream in automatic transmissions. The current mainstream on the market is 4at, which is a hydraulic transmission with 4 gears.

Its disadvantages are that it consumes fuel and has a strong sense of frustration when shifting gears, which makes the driver less able to experience much driving fun.

However, when Jin Xiaoqiang was reborn in later generations, 6at automated manual transmissions had basically become popular, and some luxury cars had even begun to use 8at or even 10at automated manual transmissions.

For the civilian version of the 6at automatic manual transmission, it is enough. It has less shifting frustration and low fuel consumption. It is basically comparable to a pure manual transmission. The only disadvantage is that the cost is slightly higher and the equipment is low.

Cars at this price point are a bit difficult for manufacturers to price.

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

When the car is working 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 gears are automatically closed, and the first gear is

The clutch will automatically open and second gear will be activated.

In this way, a perfect shift can be completed, there is no frustration in the middle, and it will be very fuel-efficient.

Of course, just before Jin Xiaoqiang was reborn, this dual-clutch transmission also had quite a lot of problems that had not been overcome. For example, due to stop-and-go driving in the city, because the dual-clutch has a set of clutches in a standby state for a long time, it would cause the transmission to overheat, even catch fire, and wear out.

intensify.

Moreover, problems such as second gear shaking and dust accumulation in the gearbox have not been properly solved.

Therefore, although DSG will become the development direction of the mainstream transmission in the future, in the past ten years, hydraulic transmission, that is, AT transmission, is the most suitable choice for Jin Xiaoqiang.

Jin Xiaoqiang has already drawn out a drawing of the currently more mainstream 4at transmission. Of course, it is a copycat of Japan's Aisin 4at transmission, but some improvements have also been made.

After all, the 4at ten years from now will have some changes compared to the current 4at.

In fact, in terms of AT transmissions, the two most outstanding ones are the German company ZF. Their hydraulic transmissions are indeed good, but the cost is also high, so they are generally matched with relatively high-end transmissions such as BMW, Mercedes-Benz, and Audi.

on the car model.

As for Aisin's 4at, it is much more civilian-friendly and is mostly used in everyday civilian cars. Toyota, Mazda, Opel, etc. all use Aisin's 4at.

It is precisely because of this civilianization and cost control issues that Jin Xiaoqiang chose this Aisin 4at to copycat.

At the same time, in the factory, Ding Weizhong and Yang Dingwei have basically summarized the production process and technology of the mq250 transmission.

In just a few months, three engines and two transmissions were 'designed', and the technical principles of cvvt and dvvt were also proposed. That is to say, the news has not been released yet. If it is released, Jin Xiaoqiang will definitely become a

A celebrity in China’s automobile industry!

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