【正文】 the number of the use of electromagnetic valve. Because no one axis adopts the design, so the length of the transmission is very small, weight between traditional manual transmission and also between the transmission, can adapt to the migat horizontal layout of small vehicle engine needs.Except for multinational panies, geely are also introduced the 6 and 7 speed DCT development. After two years of national science and technology project 863 DCT, cobolli gigli has mastered the key technology and development of DCT optimal development process. In the process of prototype DCT, cobolli gigli preliminarily formed their own DCT supplier chain, laying the foundation for the DCT industrialization through this project, and the automatic transmission development team. At the same time, cobolli gigli DSI through acquisitions pany, enhance the ability of autonomous development automatic transmission.Starting in ChinaAMT as automatic transmission solution was relatively simple, low cost, and has been regarded as a manual transmission from the development of automatic transmission. Because of its traditional manual transmission remains, so when the shift of power interruption has been regarded as the biggest soft rib, multipurpose at fort requirements of mercial vehicle. Currently, the European mercial installation AMT transmission ratio, China has reached 50% of this one market just started.Special attention is worth in the Shanghai auto show steam group booths, exhibited selfdeveloped mercial AMT transmission, The hybrid heavy wind in technical parameters, and labeled by AMT transmission. Obviously, the domestic mercial enterprise felt very bullish on this technology.Before has officially announced the AMT products listed sinotruk, use is local production Wilbur secco AMT control system. According to LiuLiang Asian section chief has introduced the use of AMT, can not only bring convenience for mercial manipulation and fortable, also due to better economic AMT transmission to electronic engine control system, ABS speed sensor system etc, so the ascension of vehicle technology platform have great role in promoting the whole of vehicle safety to produce great stimulating effect.In this seminar, a Dutch design pany proposed innovative design solutions, says the AMT AMT can effectively solve the power interruption in the shift. This technique by reforming the traditional clutch structures, a new device, can not use double clutch technology, under the precondition of realizing the power shift AMT seamless connection, and further improve the transmission efficiency and energy level will increase the AMT technology level. The CVT transmission torque is lowDue to the CVT transmission characteristics of stepless speed, pared with other types of variable transmission is inparable flexibility. In adjusting speed, realize engine speed optimization, etc, can be easily realized through software calibration. Because of its unique features, the speed has been working to make the engine can CVT in optimal speed, so alone CVT transmission, can obtain very good energy saving effect. Because the torque twist with CVT transmission efficiency exist in aspects of congenital deficiency, CVT work to the inevitable cause the energy loss, so the overall efficiency, often floating. Maximum transmission torque low, is always the CVT weakness.Currently, the CVT transmission is the biggest market in Japan, the CVT transmission functions of automatic transmission of all about 1/4 of market share. Use CVT transmission of enterprises, except us Chrysler are basically Japanese enterprises.In China, the market is CVT transmission JieTe main manufacturers. In the seminar, JieTe families main emphasis CVT technology, and points out that the control flexibility can only see transmission efficiency, but CVT in ascension of engine efficiency advantage. Through optimization of different road and driving under the condition of the engine, prehensive score ahead.Bosch as the core parts of steel strip CVT supplier, also the main technical CVT fan. The emphasis in the BBS speech, more on the improvement of steel strip technique, and the influence on the performance of the CVT flexible control characteristics in the CVT hybrid system application advantages. Among them, the hybrid system in CVT, not only have CVT stepless speed regulation of congenital advantage, more also because, at present hybrid technology mainly by the pany, the pany is mainly advocates CVT.In domestic enterprises, except for a few independent transmission in ramp。d enterprises, independent brand products CVT leading enterprise in the development of CVT chery also, and obtain a preliminary breakthrough. AT other products will gradually be replacedAs the most mon AT the automatic transmission, is now the most widely used, meanwhile, the cost of oil, etc. Also es AT trainingcamp Admittedly, although other forms of automatic transmission have distinct advantages, but now in the market for automatic transmission, the mainstream is still AT the current transmission better after the cost and fort balance, etc.In the conference, all other types of automatic transmission, said AT the enterprise market their product will gradually be replaced. But these panies also admitted that in the long time in automatic transmissions will still be AT an absolute majority market share of the market.In the speech, the representative of a few special adivision is introduced AT one of the development situation of the transmission. The enterprise that, through the optimization design of 6 speed AT transmission can also obtain fairly good effect of energy saving and dynamic performance, though still have pared with DCT etc, but due to the mature technology and the structure characteristics, so whether engine displacement, preliquid lead after the precursor, front or rear engine displacement, can be better AT transmission, this is pared to other forms of transmissi