Why are turbocharged models sold in China equipped with dual clutch and CVT, and seldom use AT gearbox?

When it comes to dual clutch, you must mention Audi. In fact, powershift is not a new technology application. 1939, Adolf of France designed the dual clutch and applied this technology to Citroen. Although the patent protection period has long passed, the dual clutch has very high regulations on raw materials, control system and heat dissipation of friction plates, which is limited by control system and raw materials and has no development trend. From 65438 to 0985, Audi gradually installed powershift on its sports car. In 2002, Renren and Borg Warner jointly developed a new generation of dual clutch speed regulation, which was gradually installed on Audi TT and Golf R32 in 2003. Although the common faults of the initial double clutch emerge one after another, after years of recall, the reliability has been improved, especially for most of the whole series. It has promoted the development trend of dual clutch.

Because of the technical advantages of dual clutch, some domestic car companies have been developing power shift products: for example, Gio Auto and Borg Warner jointly developed 6DCT (wet test), FAW and Borg Hua jointly developed 6DCT and installed it on Hongqi car H7, BYD Auto independently developed 6DCT, Changan Automobile American R&D Center developed 7DCT, Che Feng and Gertrak jointly developed 6DCT, and Jixiang and Australian DSI jointly developed 7DCT. It is only a matter of time before the dual clutch is widely used in China. In fact, the low-end cars and some domestic models are equipped with Aisin 6AT transmission with low cost. Need to be lower than dual clutch and CVT gearbox. This is Aisin's smallest gearbox (AWF6F 16), and it is also a small torque gearbox, bearing a large torque of 160Nm. It is characterized by small size and low price. Most 1.6L self-priming engines can be matched with AWF6F 16.

Cost is definitely the dominant factor. The cost of AWF6F 16 in the middle and low end is lower than that of dual clutch and CVT. Turbocharged automobile engine +DCT+CVT is the most suitable choice. DCT has low cost and no technical requirements for completely open source code. Most manufacturers can research and develop, even if the procurement cost is not high. The same is true for CVT gearboxes. The prices in Bang Qi and Wan Liyang are not too high, while Honda, Toyota, Nissan and other manufacturers can independently manufacture CVT gearboxes with high transmission efficiency, good ride comfort and low cost. Regardless of self-priming and turbocharging, matching AT transmission is a luxurious and good way. Need money to support. It is not difficult to match a new 1.2T Corolla with a popular 8AT transmission, but how to price the vehicle?

Therefore, a good solution is equivalent to a high-value capital investment and is not suitable for all models. If you want to use good steel in the cutting edge, then match the high-value and high-cost flagship transmission with high-value cars, which is more effective and more acceptable to its audience and wants to buy it. The above example is also needed. If 1.2T Corolla is equipped with the currently popular 8AT transmission, its price will definitely increase. In this way, Corolla's target consumer groups will choose the power of Honda and Nissan in Guangzhou because of the price increase. Because Corolla's target consumer group can't accept paying a big price for 8AT, his regulations are not that high. It is cost-effective to buy a new Corolla with CVT, which is enough. Who doesn't like standardization? But it is the cost budget that limits standardization, which is a rigid limit.