It is said that there are many disadvantages of dual clutch, why are there so many business choices?

When it comes to dry dual-clutch transmissions, it's really love-hate-hate. When the first dry dual clutch is assembled in a car, there are a lot of failures. However, it is such a clutch that still sells like crazy when people "spray" it.

Volkswagen is known to be the first country to use a dual clutch, and the problems that come with it are the regression of the gearbox and the unusual noise. But the best-selling models are also equipped with dry dual clutches, such as the Volkswagen, Sutar, Lavida, etc. are strong competitors.

Faced with such a situation, people who buy cars are very puzzled. Can they buy a dry dual-clutch, asking themselves over and over again.

The world's best-selling car brand was the first to develop and use a dry dual clutch, indicating that dual clutches are the future development direction of automobiles. In addition, Volkswagen wants to maximize profits, and if the gearbox is always subject to the AT gearbox, it will cause a certain loss of profit. Therefore, at this juncture, Volkswagen can only use the dry dual clutch first, otherwise, when Toyota occupies the market, it will really be useless.

When the dry dual-clutch is started, the high temperature, abnormal noise, and regression of the gearbox make the owner very dissatisfied. But fortunately, it comes from the masses and has already passed the market test. When Volkswagen's dry dual clutch achieved initial success, domestic automobile companies also began technological innovation, specifically for high temperatures, abnormal noise and frustration and other problems, one-to-one solutions.

The development of a wet dual clutch is currently the best approach. Under the lubrication of oil, the temperature decreases, abnormal noise and regression can be well solved. At the same time, the dry dual clutch is constantly improving, and at least the problems of squeak and frustration are almost eliminated.

Although there is a wet dual-clutch now, it is **expensive. For car owners who want to buy a dual-clutch, a dry dual-clutch is definitely a good choice. Now you don't have to worry about dry dual-clutch anymore.

You see, all of Volkswagen's touring models are equipped with dry dual clutches. Car sales prove that the dry dual-clutch is not a big problem and is worth buying. In the face of so many holdings, there is no need to worry about the retention rate.

It is now divided into dry and wet dual clutches. In terms of word of mouth, the wet dual-clutch is better. But the best-selling is the dry dual-clutch transmission.

This can be seen from the sales volume of the Volkswagen family. However, with the continuous innovation of dry dual clutch technology, its stability has been greatly improved in use, and it is still the best choice for dual clutches.

Because the cost of this setup is relatively low, and then the technology is more complex, and it is also more valuable, and the competitive pressure is relatively small.

Because although the dual-clutch has advantages, the advantages outweigh the disadvantages, and overall it is still very good.

Mainly because the dual-clutch transmission is also a selling point of the car, and some cars and some sections are more suitable.

Because of the low technical requirements for the research and development of the double clutch and the low production cost, it is mainly bought in China, and the double clutch is scoffed at abroad.

Although many car manufacturers know the defects of dual clutch transmission, there are still a lot of them, but many car companies still choose. The reason for this situation is that the car uses a dual-clutch gearbox, which not only saves fuel consumption, but also is more convenient to operate. Although the AT gearbox, when driving, can give the driver a very good experience.

However, the requirements are very strict, and many manufacturers can't do it, so in desperation, they choose a dual-clutch gearbox. <>

Compared with other types of car transmissions, the existence of dual clutches can allow the driver to change gears more quickly, basically within seconds. And when changing gears, it will not consume the engine, and it will not let the engine be in a state of wear and tear, and it will always be in operation, so the efficiency is also higher. Although it can greatly improve efficiency, it will not consume too much fuel in terms of fuel consumption.

It can also cater to the current trend of energy conservation and emission reduction. <>

Therefore, many car companies, after weighing the pros and cons, have chosen dual-clutch gearboxes. This can also save consumers a lot of money. Although the AT gearbox is very good and can give the user a smoother experience, the AT gearbox requires a higher level of technology.

And if car companies choose AT gearboxes, their own costs will be much higher, and only luxury car companies like BBA can be used. <>

Therefore, many car companies can only choose a dual-clutch that caters to the needs of the public. And in the market, the more common car brand is Volkswagen. However, many Chinese people do not have a particularly high degree of trust in the products produced by state-owned enterprises.

However, the emergence of Volkswagen has given consumers a good change, because Volkswagen is still relatively popular in China, and it is also a brand that consumers buy more often. Volkswagen uses a dual-clutch gearbox, which basically has no major safety hazards, so it is slowly accepted by consumers.

Because although it has a certain defect of clearing the reed, but it also has many advantages, low fuel consumption, and the shift speed is very fast, the driving speed is also very fast, the noise is relatively low, and the experience is very good, so the major enterprises will choose the double clutch belt.

Because the dual-clutch variable speed box has natural advantages over AT and CVT, and its natural advantages will gradually become prominent, and it may become the mainstream of future cars, with the improvement of the computing level of vehicle chips, the dual-clutch will also be gradually optimized in the sail state.

This gearbox is very efficient and fuel-efficient, which is a good choice for many families.

<> "Double Clutch Selling is so popular, do you know what shortcomings he has?"

What's so bad about using a dual-clutch transmission?

Basically, the most common problem with dual-clutch is overheating, which has something to do with its design structure.

Shifting gears is like a relay run, the one in front is already bent over there when he is waiting, and he is ready to run, stretching out one hand to the back, just waiting for the person running up behind to hand over the baton to him, and he will pre-combine.

If you are stuck in a traffic jam in the city, repeated gear shifts will generate more heat. The heat used to be in the traditional gearbox, and it didn't have transmission oil in it, and the heat was taken away by this.

However, most of the dual-clutch is dry, it is air-cooled, and the heat dissipation effect is relatively poor, so it is easy to overheat.

As soon as it is hot, the system detects it, and it immediately produces overheating protection, it is possible that there will be problems with this upshift and downshift, and there may be problems with this power. But when it cools down, it's basically fine again.

However, in the case of dual clutch, there are two types. In addition to what I just said, it is called dry dual-clutch, and the more expensive car uses a wet dual-clutch, and it is still lubricated by oil in the middle, so it is unlikely to have such a problem.

What other flaws are there besides overheating?

The dual-clutch hall is quietly controlled by the computer, and an electronic signal needs to be sent to the engine during the upshift, and the engine cooperates to complete the upshift. The use of a large number of electronic components is easy to cause problems, and the old car is not easy to break, because there are no spare parts to break.

Nowadays, there are more and more car configurations, and the failure rate is getting higher and higher, and basically the reliability of the car is a little worse than the reliability of not being powered.

Coupled with this dual clutch, whether it is dry or wet, it has to shift gears frequently, and the clutch plates will wear out.

Therefore, the most fatal flaw of the dual-clutch gearbox car is the design of its structure.

In general, if you want to buy this car, you still have to bear a little stability in the case of better performance and lower fuel consumption.

DCT is different from a general automatic transmission system. It is based on a manual transmission rather than an automatic transmission. In addition to the flexibility of a manual transmission and the comfort of an automatic transmission, it also provides uninterrupted power output.

Conventional manual transmissions use a clutch. When shifting gears, the driver must press the clutch pedal to engage the gears of different gears, and the power is interrupted during the shift, making the output performance intermittent. Depending on the characteristics and working mode of the DCT, the DCT system can give the driver the feeling of driving a racing car.

In addition, it eliminates the feeling of torque interruption when the manual transmission shifts gears and makes driving more responsive. Based on its use of a manual transmission as a base and its unique design, the DCT can withstand torques of up to 350 N.

The clutch is located between the engine and the gearbox. It is the "switch" of power transmission between the engine and transmission. It is a transmission mechanism that not only transmits power, but also cuts off power.

Its main function is to ensure the smooth start of the vehicle, reduce the impact load of the transmission gear, and prevent the transmission system from overloading. In a general car, the shift of the car is achieved by the disengagement and engagement of the clutch, and the power transmission is temporarily interrupted between the disengagement and engagement.

The advantage of a car dual clutch: fast gear shifting. The car dual clutch shift time is very short, faster than a manual transmission, less than a second.

Fuel economy. A car's dual clutch saves a lot of fuel because it eliminates the interruption of torque, that is, the power of the engine is used all the time and always works at its best. Comfort: Due to the fast speed of transformation, every transformation of DCT is very smooth, and the frustration is so small that it is difficult for the human body to detect.

Disadvantages of car dual clutches: cost issues. The structure of the automobile double clutch is complex, the manufacturing process is demanding, and the cost is also high.

Therefore, we can see that the models equipped with dual clutches are all mid-to-high-end models. Torque issues. While a dual-clutch gearbox is more than enough to meet the requirements of similar vehicles in terms of acceptable torque, it is not enough for intensive use.

Because if it's a dry clutch, it will generate too much heat, and a wet clutch won't have enough friction.

The cost is relatively high, and there will be some problems with torque, the friction is not enough, the manufacturing process requirements are relatively high, the structure is complex, and the power is not strong enough.

The disadvantage of dual-clutch transmission is that the failure rate is very high, and basically there will be various small faults after running about 50,000 kilometers.

The biggest disadvantage of the dual clutch is that the life is relatively short, and it will generally be damaged or have more failures after a few years.

In the automotive industry, dual-clutch gearboxes are commonly called "DCT", mass cars are commonly called "DSG", and Mitsubishi people commonly call it "SST". So what is a dual-clutch transmission? Dual-clutch gearbox is currently a high-speed gearbox in the automotive industry, which uses two sets of clutches, and the two groups of clutches work alternately with each other to achieve the effect of optimizing gear shifting, and achieve good performance and good fuel economy.

The working process of the dual-clutch gearbox is that two sets of clutches control the odd gears and even gears respectively, before the gear shift, a group of clutch pre-meshing gears, after the shift command arrives, the gears that were meshed before work rapidly, the speed of the initiator increases, and the previous group of clutches is completely separated to complete the shift work.

The two sets of clutches of the dual-clutch gearbox work alternately, the shift time is short, the power connection of the starter is compact, the power output is fast and smooth, the vehicle performance is improved, there is no frustration, and the driving experience is better.

So what are the shortcomings of the dual-clutch gearbox?

Without a torque converter, there is a lack of torque at low speeds for small displacement initiators; Secondly, the computerized control of the transmission work, the process of lifting and lowering the gear requires the computer to accept and send signals, and the use of electronic components is relatively large, and the probability of failure is greater than that of AT and CVT; In addition, the structure is more complex, the process requirements of consumption and manufacturing are higher, and the corresponding cost is relatively high.

The dry dual-clutch congestion road conditions limit the heat capacity and heat dissipation methods and methods of the clutch, resulting in easy overheating and fluttering frustration. The wet test of the dual clutch is much better, and there will only be a slight setback. Compared with the 6AT in the wet test, the overall performance is better than that of the 6AT.

After all, it is a computer not a human brain, and it cannot make 100% correct judgment and prediction of road conditions, and the fluid coupling of AT can be well compensated, and the DSG can only be carried by a dual-mass flywheel and other buffer mechanisms. Zai Cai is still much stronger than a novice. The best dual-clutch is still the masses, and it can be said that the dual-clutch of A-B class cars, no other manufacturer can reach the height of the masses.

There are many detours, and the experience is the most abundant.

The disadvantage of the dual clutch is the torque problem. Although the dual-clutch gearbox can definitely meet the requirements of the general vehicle in terms of the torque it can bear, it is still not enough for intense use. Because if it is a dry clutch, it will generate too much heat, and if it is a wet clutch, the friction will not be enough.