Introduction | World owes China a sorry and thanks.
China currently has 1,135 passenger cars on sale, of which 17% have DCT (Double Clutch Automatic Transmission) versions.
The cheapest DCT model is the Changan CS15, with a guide price of 68,900 yuan; the most expensive DCT model is LaFerrari, with a base price of 22.5 million; matching engine displacement, ranging from 0.9L for the smartfortwo to 6.3L for the Ferrari; maximum torque from The smart 91N·m is 770N·m to the McLaren 720S. It can be said that DCT is everywhere.
In terms of matching new cars, from the Tiger 7 to the new Haval H6, from the BYD Song MAX to the Po Chun 730, from the Tiguan L to Kodiak, from the Roewe i6 to the just-listed new MG 6, from the hot VV7 to the short supply Collar 01, DCT has become a must.
Did you remember that in 2013, when Volkswagen recalled 1.1 million DSG vehicles in China, why did it become more popular in the past four years?
The origin of 1 double clutch
The double-clutch technology patent was owned by the French Adolphe Kégresse in 1939, but he failed to commercialize the dual clutch.
After 24 years, Porsche developed a 5-speed semi-automatic double-clutch transmission in 1964 and fitted it to the Porsche 908. Until 1981, Porsche’s PDK dual-clutch automatic transmission was finally built on the previous foundation. Developed. Porsche 956 with PDK, Porsche 962 cars have won a lot in the competition.
In the mid-1980s, double-clutching attracted attention due to Porsche's PDK. In 1987, the Audi SportQuattroS1 equipped with a Porsche six-speed dual-clutch transmission won the championship at the Pikes Peak Mountain Race. It was a time of fame. But during this time, the double clutch The application and the civilian vehicle are still not on the edge.
In the late 1990s, Volkswagen and BorgWarner worked together to develop the first dual-clutch transmission suitable for high-volume production and application. The mass production went on sale in 2002 and was carried on the first-generation Audi TT. This was We are familiar with the DSGDQ250. This is also the world's first mass-produced 6-speed wet dual-clutch automatic transmission.
In 2008, Volkswagen also introduced a 7-speed dry-type double-clutch DSGDQ200, which was installed on the golf model of the year. Dry and wet mass production double clutch has now come out fully.
The difference between dry and wet dual clutches is that the wetted torque is larger, generally 250N.m or more, and is mostly used in performance vehicles; the dry type withstands less torque, generally less than 250N.m, mostly used for small and medium-sized family vehicles. .
In 2009, FAW-Volkswagen MAGOTAN was launched on the DQ250 and became the first dual-clutch transmission model in China.
In the same year, in 2009, Porsche and ZF officially launched the PDK dual clutch transmission on a production vehicle three years later.
PDK has two platform products: The 7DT-45 and 7DT-70 share a common platform. They were installed on the 997Carrera, Cayman, Boxster, and 911Turbo in 2009. The maximum torque is 780N.m. They are used in engines. On the model. The second PDK platform is called 7DT-75. It is used on the front engine of the engine. For example, on the Panamera 2009 and Macan 2014, the maximum torque is 370-770N.m.
In the case of the Porsche PDK, the impressions are 7-speed wet dual clutch. Recently, with the launch of the new-generation Panamera, the PDK has evolved to 8DT, the 8-speed wet dual clutch, and the ZF took on the dual clutch module and the TCU control module. People are expecting.
In addition to the Volkswagen Group, Ford is the center of the double clutch.
In 2001, Ford and GETRAK, the world's fourth-largest transmission manufacturer, established a strategic alliance for gearbox R&D. In 2005, they jointly developed dual-clutch research for Ford B-Class and A-Class vehicles. Lac is responsible for the development of gearbox core technology and electronic components, while Ford is responsible for the development of gearbox control software, post-adjustment and vehicle assembly.
In 2007, the first generation dual-clutch gearbox 6DCT450 was born. Ford called it Powershift. The biggest difference between this wet dual clutch gearbox and Volkswagen's DQ250 lies in the structure of the clutch module. The two clutches in the 6DCT450's clutch module are parallel. Arrangements are more conducive to cooling.
The transmission was then fitted to Ford Mondeo - Zhisheng, and Volvo's 2013 S402.0L, S602.0T, XC602.0T, S802.0T, matching Ford's four-cylinder machine.
Not only performance cars, European and American models, Japanese and Korean systems have begun to gradually apply dual clutch technology. Honda applied the 8-speed wet dual clutch with torque converter in 2014 on the Acura TLX, and then used it in the Platinum Core 2.4. L. On the 2015 map, Hyundai Group began to apply the 7-speed dry double clutch for the first time, with a maximum torque of 265 N.m. Later, it was widely applied to 1.6T models such as Sonata 9, K5, and KX5.
In addition to the European, American, Japanese and Korean brands, China's own brands have also begun to apply a large number of dual clutch technologies.
