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In 1940, after Rudolph Franke, professor of the famous Darmstadt Technical University in Germany, applied for a patent for the dual clutch transmission (DCT), no one would have thought that this kind of transmission could meet consumers' double requirements for driving sense and vehicle fuel economy until 70 years. Later today it has not really been widely used in the world.
In fact, this type of transmission was not only assembled on cars but also tested on trucks. For various reasons, it was not put into mass production.
In 1985, Audi took the lead in breaking the deadlock and applied double clutch technology to the racing track. It was named "audiSportquattro S1 racing car with dual clutch technology". The adoption of dual-clutch technology not only enabled Audi to ride in the major cross-country races at the time, but also enabled Audi to win multiple events.
After adopting the module produced by BorgWarner in 2003, the first dual-clutch automatic transmission with modern significance was put on the market. Due to its superior efficiency and comfort, the dual-clutch automatic transmission is 15% more efficient than conventional automatic transmissions, and its comfort is best in various automatic transmission technologies. Therefore, as a new generation of traditional automatic transmissions, DCT has achieved great market success as soon as it is available.
Subsequently, DCT was quickly popularized in the European market. The Volkswagen DSG transmission is widely used in civilian vehicles; Ferrari's seamless DCT transmission has also been applied to Ferrari's high-performance sports cars and Formula One cars; it is reported that BMW will also use its own high-performance cars. Newly developed 7-speed DKK transmission.
"Ice fire two heavy days." Different from the development and expansion in foreign countries, China has failed to achieve an effective breakthrough in independent research and development due to the complex structure of automatic transmissions. Automatic transmissions are completely dependent on imports and the amount is as high as 10 billion yuan. This not only affects the production costs of domestic auto companies (including joint venture brands and independent brands), but also restricts the production capacity of some auto models. How to solve the problem of automatic transmission of resources has clearly become a major issue related to the fate of China's own brand cars.
"In fact, there is a controversy in the industry as to which type of automatic transmission should be developed in the country. There are companies in AT (automatic transmission), CVT (continuously variable transmission), DCT, and AMT (manual transmission). However, because DCT transmissions have many advantages such as short shift time and no loss of power, CVT and DCT can best cater to the needs of domestic automobile companies in various automatic transmissions, which are more than those of traditional hydraulic automatic transmissions. The input cost is low, and the development cycle is short.†As president of Fiat Power China, Shen Hui said in an interview with a reporter from the Fiat Power Technology R&D Center, which Shanghai has just put into use.
It is worth mentioning that before he served as the president of Fiat Power China, he excluded the chief representative of China that served as TXU Group, and Shen Hui was also the President of China of the BorgWarner Group as mentioned above. As a subsidiary of the Fiat Group, Fiat Power is also one of the leading companies in the global automotive powertrain. In addition to the annual output of more than 3 million engines per year, it also produces up to 2.5 million sets of gearboxes, and DDCT is one of its products with advantageous features. Not only is it one of the few companies in the world that has DDCT (dry dual-clutch automatic transmission) technology and is capable of mass production, it is also the only supplier to provide DDCT products and services to customers outside the group.
Shen Hui's words are not unreasonable. In fact, as early as many years ago, the unique advantages of the dual-clutch automatic transmission caused the attention of the Chinese government authorities and many automobile companies. In early 2008, under the coordination of the National Development and Reform Commission, several domestic enterprises such as FAW, SAIC, Dongfeng, etc. jointly established technology development organizations and jointly developed automatic transmissions, especially the dual clutch transmission (DCT).
On November 25, 2008, BorgWarner successfully signed a cooperation agreement with 12 local vehicle companies (FAW, SAIC, Dongfeng, Chang'an, Chery, Brilliance, Jianghuai, Changfeng, Geely, GAC, Zhongshun, and Great Wall). BorgWarner United Transmission System Co., Ltd.". Shen Hui is also one of the sponsors of the project. The total investment of the new joint venture company is 1.38 billion yuan. Located in the Dalian Economic Development Zone, it is planned to be completed and put into use in early 2011. According to the plan, the joint venture will produce and develop the core products of the dual-clutch automatic transmission: the dual clutch module, the torsional vibration damper module and the control module, and will adopt BorgWarner's latest world-leading production technology. This seems to indicate that the domestic DCT (Double Clutch Automatic Transmission) plan is on track.
Everything seems to be going well. However, the plan did not change quickly. As the interests involved were multi-faceted, the progress of the joint venture was not smooth, and the volume production seemed to be somewhat out of date.
Under such circumstances, if there is a domestic transmission company that announces its entry into the DCT market, it will inevitably be exciting.
In an interview with this reporter, Shen Hui told reporters that Hangzhou Iveco Automotive Transmission Co., Ltd. (Fiat Power Technology's transmission joint venture, hereinafter referred to as Hangweike), which has just been acquired by Guangzhou Automobile Group with 1/3 of its shares, plans to produce Fiat Power Technologies by the end of next year. DDCT is expected to have an annual output of 100,000 units.
As a technical expert in this field, Shen Hui told reporters that DCT technology is divided into two major types: DDCT and WDCT (wet dual-clutch automatic transmission). Compared with WDCT, DDCT has advantages in terms of cold start, weight, volume, fuel consumption and system cost. At the same time, the maximum output torque provided by DDCT can also better meet the development needs of passenger cars in China.
"Compared with traditional MT (manual transmission), DDCT's fuel economy can be increased by about 4%, compared with AT (automatic transmission), fuel economy can be increased by about 10%. Compared with AT, DDCT's cost can be 15%~20% reduction, compared with WDCT, the cost can be reduced by about 5%~10%.The higher price/performance ratio makes us believe that DDCT has more potential for development in the future Chinese market.The DDCT equipped hybrid vehicle The use of data in Europe shows that the technology can reduce the carbon emissions of cars by 28% in the urban traffic environment, and reduce the use of light commercial vehicles by 35%.â€
It is worth mentioning that just before Hang Vico plans to produce DCT transmissions by the end of next year, the JAC's dual-clutch transmission plan will be listed as a major project of independent innovation by the local government and will receive 50 million yuan of funds without compensation. The project construction period will be from 2009 to 2009. year 2011. A series of events showed that the energy-efficient dual-clutch transmission has gradually entered the eyes of Chinese owners. It may not be long before whether or not a dual-clutch transmission has become an important factor affecting the purchase of cars. Obviously, the production of DCT gearboxes by Hangover is very likely to become the first in the country.
“It should be noted that the joint venture company between BorgWarner and Chinalink in Dalian is mainly producing systems and modules for the production of WDCT. We produce the entire DDCT transmission. Its products are mainly applied to the maximum output torque is not high. For passenger cars and light commercial vehicles with a capacity of 350Nm, if lighter materials are used, the cost can be further reduced to meet the requirements of small-displacement vehicles.From the product itself and the technical features of both WDCT and DDCT, you can see Out of this, the markets we focus on are very different from those of BorgWarner and China Friendship Alliance.†Shen Hui told reporters that Fiat Power Technology did not intend to seize market opportunities when BorgWarner was in disarray.
"As long as users have DDCT requirements, we will provide them with related products and services. Users can use their own engine support, or use Fiat's engine support." Shen Hui told reporters, Fiat Power Technology can be the entire domestic The DDCT provided by the car companies can also help solve the matching problem between the DDCT and the existing engine and other powertrains, and provide a complete set of advanced powertrain systems that match the entire vehicle. In addition, Fiat PowerScience's global network resources can relieve the worries of the export vehicle after-sales service in the powertrain.
It is understood that the DDCT-C635 transmission imported by Fiat Power Technologies into Hydracus is a 6-speed transmission, 3-axis arrangement, and a weight of approximately 80 kg. All six gears are equipped with a synchronizer, and all electronic equipment passes through the TCU (automatic transmission control unit). ) To control, the maximum output torque is 350N•m.
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