Transmission is very important, especially automatic transmission. After all, our independent car companies have shortcomings in this respect; Although some independent car companies have built At and CVT themselves, there are still many gaps compared with the international mainstream automatic transmissions (such as ZF and Aisin) (to be honest, it is not black, and if you want to improve, you must face up to the problem and fantasy can't solve it). Therefore, if you want to come up with a reliable automatic transmission with satisfactory performance and durability, you must cooperate with mainstream automatic transmission companies!
Some difficulties about automatic transmission In recent years, the popularity of automatic transmission cars is getting higher and higher, which is no longer the pattern of manual transmission in the past. Therefore, many independent car companies did not worry about the problem of transmission in the past, because it was not difficult for them to build a manual transmission, but now the automatic transmission has become a big market, so they urgently need to come up with an automatic transmission to cope with the changes in the market structure, requiring a change in an automatic transmission and having the following attributes. . . The 1.R&D threshold needs to be lowered. 2. The R&D cycle needs to be shortened. 3. It is easier to get support from foreign OEMs. 4. The cost is relatively controllable. 5. In line with today's fuel economy.
Based on the above five points, the answer is only one option: powershift; Powershift, it is difficult to be perfect, but fortunately, its research and development threshold is very low, and the requirements for accuracy are not as high as At and CVT. As long as it is an enterprise that can build manual gears, it is not a big problem to build a dual-clutch mechanical part. After the theme is completed, it is enough to buy a dual clutch module, shift module and TCU module through companies such as Getrag and Bosch, which is far easier than developing At and CVT. At least we can finish the mechanical part easily.
The research and development cycle is relatively short. If you build an At transmission from scratch, it will take about ten years or even longer, and the matching problem after research and development is still a long process. So if you go in for 20 years, consumers can wait, but the OEM can't. In the final analysis, this is a very expensive process, and any OEM will not be willing to play alone. However, there is no need to start a new stove to play dual clutch. The development cycle is generally about five years, so dual clutch is more easily recognized by independent car companies!
At, CVT and other transmissions are accompanied by too many patent protections, while the dual clutch is not so verbose; For those who master the patented technology of dual clutch, only by introducing more car companies can dual clutch have a bright future. Therefore, many technologies of dual clutch do not have too complicated patent restrictions, and those big companies that do dual clutch are also willing to cooperate with our independent car companies to help us do dual clutch; This attitude is much more enthusiastic than those big At companies. If we look back at the times eight or nine years ago, it is difficult to find a supplier of automatic transmission. At that time, our own car share was really too low, and the purchase volume was low. Big companies also disdained these orders! So At road is impassable, so DCT Bai, in fact, it is not difficult to understand, to develop, you have to find another way!
You should have understood when you wrote this. Is this an independent car company that loves powershift? In fact, there is no way to go back for eight or nine years. At that time, the sales of independent car companies had just seen the light, and the market quickly transitioned to automatic transmission. At that time, most independent car companies were in an embarrassing situation, and it was too late to develop at and CVT (so only a few companies touched CVT and AT transmission), so there was no way to cater to dual clutch. This is not a question of liking or not, but a question of how to survive, so now many of our independent car companies are equipped with dual-clutch machines!