For manufacturers, the main issue is cost. Whether AT or CVT technology is mature and the patented technology is in the hands of others, dual-clutch has relatively low R&D costs and is convenient for overtaking in corners. There are hundreds of thousands of gearboxes undergoing quality verification in various environments. The problem of squelching and abnormal noise is minimal compared to the number of products in stock. However, there is no guarantee that it will not exist in all mass-produced vehicles, and the yield rate of industrial products is impossible. Do it 100%.
It is even smoother than the Volkswagen dual-clutch that took longer to develop. But on the other hand, Great Wall's dual-clutch transmission makes car owners love and hate it. Why is this? In order to reduce the failure rate and improve reliability, the domestic dual-clutch transmission has lowered the shift speed (it seems to be four to Five times), and the code is also written conservatively. So the reliability is still okay, but the driving experience is very average.
My h6c has a 1.5T direct injection engine + 7-speed wet dual-clutch. The fuel consumption is 8.6 in 22,000 kilometers, which is more than 60 cents per kilometer. The gearbox plays a certain role. The empty car is 1.66 tons. The engine is a bit frustrated when following the car in 1-2 gears at low speeds. Of course, just keep pressing the accelerator to accelerate. It is true that the gear shifting is not as fast as Volkswagen's DSG, which improves comfort and sacrifices some gear shifting speed. Step deeper and immediately downshift to increase speed. There is still a bit of turbo lag, but it's acceptable. The feeling of pushing the big feet on the back is very obvious, and those sitting in the back feel motion sickness.
So the performance is not bad. So far, the stability is quite good. Although it is not as good as Volkswagen's tuning, we have no problem in normal use. If you are interested, you may give it a test drive. ; Dual-clutch first appeared in the field of racing, and there is no need to consider the issue of durability. When used for home use, especially when there is congestion, it is normal for the clutch plate to burn when it is in a semi-linked state for a long time. ?The test has only been running for a year and a half, and it is still running now, so the problems that should have been exposed have long been exposed. Wei Jianjun will not let WEY ruin his brand because of the 7DCT450. As a member of Great Wall Transmission, he is just stating the facts. , I don’t know how to talk nonsense, and please don’t pretend to understand through hearsay.