Some people say that double-clutch gearboxes are used to flick white and do not understand cars. What is a double clutch transmission? Is it really unreliable as rumored? Can a car equipped with a dual clutch transmission be able to buy it? The following will explain to you by Xinjiang. What is a dual clutch transmission? Dual Clutch Transmission DCT is different from the general automatic transmission system. Besides the flexibility of the manual transmission and the comfort of the automatic transmission, it also provides uninterrupted power output. In simple terms, the working principle of a dual clutch transmission can be understood as one clutch corresponds to an odd number of gears and the other corresponds to an even number of gears. When the vehicle is engaged in a gear, the other clutch and the corresponding next gear are already in the ready state (disengaging the clutch), and the next gear can be immediately integrated as soon as it is separated from the current gear. The types of dual clutch transmissions are mainly divided into wet dual clutch transmissions and dry dual clutch transmissions. From the working principle and basic structure, there is no essential difference between the dry double clutch and the wet dual clutch transmission. The difference lies in the cooling method of the dual clutch friction plate: the two clutch plates of the wet clutch are in a sealed oil groove, The transmission oil soaked with the clutch plate absorbs heat, while the friction plate of the dry clutch does not have a seal oil groove and needs to be cooled by air cooling. The technology of wet dual-clutch transmission is relatively mature and it is applied more. Which cars are equipped with dual clutch transmissions? In recent years, there have been more and more models equipped with dual clutch transmissions. From the very first German cars to the follow-ups of American cars, the most recent self-owned brands have been launched. In addition to the relatively conservative attitude of Japanese cars, dual-clutch transmissions have gradually become popular. Such as the Volkswagen DSG, Audi S Tronic, BMW M DKG, Ford, Volvo PowerShift, Porsche PDK, Mitsubishi TC-SST, Nissan GR6, as well as domestic BYD DCT, Geely's Emgrand GL and so on. Why do more and more manufacturers use dual clutch transmissions? Double-clutch transmissions are increasingly used by more and more car companies because of their outstanding advantages. 1. Change gear quickly. The dual-clutch transmission has a very short shift time, which is faster than the manual gearbox and is only less than 0.2 seconds. 2. Save fuel. Double-clutch transmission can save a lot of fuel because it eliminates the interruption of torque, that is, the power of the engine is always used, and it is always working at the best. Compared with the traditional planetary gear automatic transmission, it is more conducive to improving fuel economy and fuel consumption can be reduced by about 15%. 3. Comfortable. Because of the fast shifting speed, each shift of the DCT is very smooth, and the sense of frustration has become so small that the human body cannot detect it. 4. There is almost no torque loss during shifting. It can be seen that the dual-clutch gearbox maintains its own advantages and also absorbs many advantages of the traditional gearbox. Therefore, more and more car companies will choose the DCT dual-clutch gearbox, and even have been obsessed with AT. The Honda of the transmission and CVT gearbox is also equipped with an 8-speed dual-clutch gearbox for domestically produced Acura CDX. For the configuration of such an Acura's stand-up in China, it can also be seen that the dual-clutch gearbox is now Popularity and popularity. What dual-clutch transmissions have problems? However, the development of the dual-clutch transmission is not easy. The most publicized is the recall of the Volkswagen DSG gearbox. It is true that the sudden power outage of the DSG gearbox during the driving process is indeed a dangerous one. If it happens to be in the uphill stage and suddenly loses its power, the consequences will be disastrous, but afterwards, the public has recalled all the models involved in the DSG power outage. The adjustment of the box system can also be considered as a complete solution to the problem. In fact, not only the public, other brands of dual clutch transmissions are often bursts of fever, low-speed jitter, shift frustration and a series of problems, resulting in many consumers have doubts on the dual clutch transmission. In fact, these problems are mainly not the problems of the dual-clutch transmission itself, but more importantly, the dual-clutch gearbox has very high requirements for the electronically-controlled shifting system and calibration, including the control of the shift points and various driving modes. Gear shift control, transmission and engine matching and more. These are the keys to truly testing the maturity of the gearbox. Therefore, it is not that the dual clutch transmission itself is not good, but the corresponding electronic control system does not adapt to the domestic road conditions. An interesting phenomenon is that many models that use dual-clutch transmissions are often required by manufacturers to perform software upgrades. After the upgrade, they can often greatly improve the problems that have arisen before. This also fully illustrates the drawbacks of the use of doctrine. Another point to note is that the time for the DCT to enter the civilian market is not long, especially the dry dual-clutch transmission. The response to various complicated conditions and driving conditions is still not perfect. Although many foreign models are already using dual clutches, the domestic road conditions are complex, the environment for the use of vehicles is diversified, and double-clutch problems frequently occur, indicating that the manufacturers have not fully considered the experimental verification stage. However, with the progress of friction materials, and the gradual improvement of the calibration results, Jiang Ge personally believe that after a period of time, dry-type dual-clutch will adapt to the domestic environment, but it still needs time to accumulate and precipitate. Dual-clutch transmission can not buy but also combined with your own car environment point of view, if it is basically used in the city, I still recommend CVT, AT models, if the high-speed, national, provincial-based, double clutch can be . If you are looking for stability and safety, choose a more reliable and stable CVT and AT transmission. In general, Jiangge recommends that dry-type dual-clutch transmissions be not recommended for civilian vehicles unless they are high-performance cars. For wet and dry dual-clutch transmissions, it is still wet double-clutch transmission.
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Double clutch is flicker white, which can carry double clutch car to buy it?