In recent years, with the improvement of people's requirements for driving comfort, automatic transmissions are increasingly favored by automotive users. Unfortunately, although many domestic companies have invested a lot of energy in the field of automatic transmission, they have rarely been effective.
“Our self-developed truck AMT (mechanical automatic transmission) will be put into operation in the near future.†Dr. Lu Xintian, director of the automatic transmission research department of the Commercial Vehicle Department of FAW Technology Center, told reporters. This cannot but be said to be an exciting event in China's transmission industry.
Passenger cars, cars, trucks AMT go hand in hand
"AMT is formed by adding an automatic shifting control system based on the conventional manual transmission. The computer-controlled actuators are used instead of manpower to complete the shift selection and clutch operation to achieve automatic transmission shifting of the manual transmission," said Lu Xintian.
As early as 2001, FAW began to develop AMT products. “Because of the complicated road conditions, frequent shifts, and high labor intensity of bus drivers in urban buses, we initially turned our attention to the development of bus AMT.†Liu Minghui, Deputy Director of Basic Research at FAW Technology Center, said, “With the advancement of research and development, The truck AMT also successively initiated the project. According to reports, according to the characteristics of different products, FAW has chosen different technical routes. Among them, passenger cars use hydraulic control, cars use electric motors, and trucks use pneumatic control.
At present, in addition to the AMT truck to be put into production, the development of FAW buses and cars AMT has also been basically completed. “Bus AMT has the ability to produce in small batches and has been applied to hybrid buses developed independently.†Liu Minghui said, “The car AMT product is also planned to be put into production next year.â€
It is worth mentioning that FAW AMT adopts almost all local supporting systems, especially the AMT car, which is basically supported by FAW Group's own production. On the basis of mastering the core technology, the product cost is greatly reduced. “Our car AMT is the same with foreign countries. Compared with the cost advantages of type products, there will be opportunities to break the monopoly of transnational enterprises for the automatic transmission industry of cars, said Liu Minghui.
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Truck AMT fuel economy 5%
“The research and development of FAW Truck AMT can be divided into two phases. From 2004 to 2005, it was the product development phase. At this stage, combined with research projects such as the 'development of multi-speed automatic transmission electronic control system', we created a prototype of the principle and realized The basic function of truck AMT. From 2006 to 2008, it entered the productization stage. At present, the product is mature and has the ability to batch production.†Lu Xintian said.
It is understood that the advantages of truck AMT are mainly reflected in two aspects. First of all, compared with the manual transmission, the automatic transmission is more convenient to operate and more comfortable to drive. This is beyond doubt. Second, compared with the same type of automatic transmission, the fuel consumption of truck AMT is significantly reduced. “We have done a lot of work on fuel economy. We need to carry out appropriate evaluation tests at different stages of development.†Lu Xintian told reporters, “In the mileage covered by different operating conditions including cities, suburban areas, and high speeds, we Vehicles equipped with manual transmissions and AMTs are compared and the results show that AMT is about 5% less fuel than manual transmissions.†In addition, FAW Truck AMT has obvious advantages due to its fully independent intellectual property and a large number of localized components. The cost advantage.
All beginnings are hard. Due to the lack of relevant experience, the development of FAW Truck AMT's first-generation products is moving forward. “Now the product development has been completed, not only has trained the R&D team, but also established a complete automatic transmission development process.†Lu Xintian said, “The development of our second-generation product has become a very convenient process. It only took more than a year. It has entered the early stage of productization."
Training local suppliers
“We broke through two major difficulties in the development of the autonomous truck AMT. The first was the development of the control system, which was solved with the strong electronic control R&D capability of the center. The second was to ensure the quality stability of the supporting components.†Lu Xintian said "AMT to achieve product, the stability of the quality of spare parts is particularly important. First of all, as the controlled object of the transmission, clutch should have good consistency, and secondly, the implementation of the response speed and accuracy of the stability is better." Lu Xintian told Reporter, FAW's key task in the process of truck AMT productization is to cooperate with suppliers and jointly develop and establish an independent supporting system.
Guizhou Honglin Vehicle Control Technology Co., Ltd. is a supplier of FAW truck AMT executive agencies. “The project started in 2005. At that time, FAW directly dispatched technical personnel to our factory. The two parties worked together to develop the implementing agency. This enabled us to have a deeper understanding of the product's performance, and the designed product was more in line with the process requirements. "The company's general manager assistant, Cui Li, told the reporter," Through the cooperation with FAW, the company has achieved great results. First, FAW's understanding of AMT products is more comprehensive and profound. Through cooperation, our R & D strength has been significantly improved, and the products Secondly, due to the fact that Guizhou Honglin is a military-industrial enterprise, although its R&D capabilities are relatively strong, its industrialization experience is insufficient, and at the same time its understanding of the automotive industry's quality management system is insufficient. Not only has a deep understanding of the automotive quality management system, but also began to change from R & D type to market type. "It is reported that Guizhou Honglin has begun to implement the automatic transmission as its flagship product, FAW to promote the development of domestic AMT industry This shows that.
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