Medical Disinfection Basket,Instrument Baskets,Stainless Steel Basket,Ss Kitchen Basket glorybest industry co.,ltd , https://www.hbglorybest.com
In 2013, the demand for the Chinese automatic transmission market reached 7 million units, and the proportion of self-owned brands was less than 1%. This means that China's annual import of automatic transmissions will cost 8 billion U.S. dollars.
Recently, at the Shengrui 8-speed automatic transmission (8AT) scientific and technological achievements appraisal organized by the China Automotive Engineering Society and Weifang Science and Technology Bureau, the deputy director of the National Passenger Vehicle Automatic Transmission Engineering Research Center, Beijing University of Aeronautics and Astronautics Xu Xiangyang, Associate Dean of the School of Engineering, revealed the above information.
“The market development of China’s auto transmissions has grown at an average annual rate of over 30% in recent years. The production and import of foreign joint ventures have long dominated the market.†Academician Guo Konghui of the Chinese Academy of Engineering told a reporter from the Science and Technology Daily that people’s In terms of driving habits, novices, especially female drivers, are mostly in favor of automatic models.
However, China's autonomous automatic transmissions have not yet been fully industrialized and still face several key issues.
- News origin -
Less than 1% of market share shows what
Every time people talk about the performance of a car, it will first talk about the engine. Indeed, the performance of the engine directly affects the power of the car. However, a good engine must also be fitted with a good transmission, a transmission that matches the entire vehicle.
In the face of rapid growth in the demand for automatic transmission market, China's self-developed automatic transmissions accounted for less than 1% of the market share, and some of the introduced autonomous AT products have not achieved mature industrialization.
Deep problems arise behind the data. “The reliability and durability of our country’s self-developed automatic transmissions are yet to be verified. Whether they can be matched with the entire vehicle; whether mass production of consistent product quality is guaranteed, market development and after-sales service needs to respond quickly,†said Guo Konghui, automatic transmission. It is the key technology behind the engine in the auto parts technology. It has high technological requirements, is difficult to manufacture, has a complex structure, and lacks independent intellectual property rights, which is often limited by foreign patents.
The lack of automatic transmission technology is undoubtedly one of the biggest weaknesses of vehicle companies. “In the Chinese auto industry led by the joint venture model, auto parts and components are difficult to grow.†According to Guo Konghui, local parts and components are not only adopted by joint-venture OEMs but are also abandoned because of their low prices but low quality. Local parts and components are thus plunged into a vicious cycle of weak development quality, low market competitiveness, weak profitability, weak development investment, and low development capability.
Relevant data show that from 2014 to 2015, it is expected that the total number of passenger vehicles loaded with automatic transmissions in China will exceed half, that is, more than manual transmission models, and the total number will reach 9 million.
It is worth noting that the various changes that have occurred in recent domestic automatic transmission manufacturers indicate that China's automatic transmission industry has entered a period of transitional development. Shengrui Drive's persistent commitment for 7 years, independent research and development of the 8AT has been equipped with the landwind X5 listed, and sounded the automatic transmission from the 8AT to 13AT development assembly number ... ...
The expert appraisal committee headed by academician Guo Konghui believes that the Shengrui 8AT scientific and technological achievements have reached design technical indicators, and the project technical level and product performance index have reached the international advanced level and can be transferred to the mass production stage. This means that China's self-owned brand vehicles have the conditions to match international front-end automatic transmissions, maintain the technical safety of China's automatic transmission industry, and drive the rapid growth of the domestic automatic transmission industry chain.
- Core concern -
Can the automatic transmission be as good as possible?
An automatic transmission (abbreviated as AT) is generally an automobile transmission that can automatically change gear ratios while the vehicle is in motion, so that the driver does not have to manually shift gears. Since the 1950s, the vast majority of cars sold in the United States have adopted automatic transmissions.
Four common types of automatic transmissions for automobiles are: hydraulic automatic transmission (AT), mechanical continuously variable automatic transmission (CVT), electronically controlled mechanical automatic transmission (AMT), and dual clutch automatic transmission (DCT). Currently, AT is widely used in cars. AT is almost synonymous with automatic transmissions.
From 4AT to 6AT, to 7AT, 8AT. In this era of motionless 8AT, is it possible to determine the quality of a car by looking directly at the number of gears? Experts believe that the most important thing is to see whether the vehicle matches or not. There are more gears, and the transmission ratio between the adjacent gears (the ratio of the input shaft and the output shaft speed of the gearbox in the corresponding gear) has a small difference, and shifting will be easier and smoother, which is what we often say as smoothness. it is good.
"The more gears, the smoother the shifting of the vehicle will be, and the near-optimal power condition will be achieved with a significant fuel-saving effect. The high gears will give full play to the engine's power and operate at speeds near the minimum fuel consumption. At the same time, it can also achieve better economic performance.†Guo Konghui said that long-term high-speed, low-range driving directly affects the fuel consumption and ride comfort of the vehicle. However, the more the number of gears, the more frequent the shift, the power will be temporarily stopped when shifting, even if the shift time is shorter.
It is as if we are going up the stairs. To reach the same floor height, the more the number of levels, the lower the height of each step, and the more effort it takes to take each step, the more difficult it will be.
"When the test drive is equipped with the 8AT Landwind X5, it feels smooth and there is no noise. If the mass production can maintain stable and lasting performance and quality, the market prospect of 8AT will be very optimistic." As director of the 8AT Scientific and Technical Outcomes Expert Committee Guo Konghui said.
The chairman of Shengrui Drive Co., Ltd. Liu Xiangwu revealed that in promoting the 8AT and various models matching, Shengrui also launched the international leading 13AT and 8AT with start-stop function, and will continue to research and reserve hybrid power. Electric 8AT and other international advanced automatic transmission technology.
--expert's point--
Collaborative innovation can make a difference
The development of China’s auto industry to this day, from the perspective of the assembly, is the lack of automatic transmission technology. Fu Yuwu, chairman of the China Automotive Engineering Society, has repeatedly mentioned this view.
The production and sales of automobiles in China have reached more than 20 million, and it is crucial to upgrade from the world’s largest “big country†to a “powerful countryâ€. Although domestic suppliers have grown rapidly, the lack of core technologies in their products coupled with inherent shortages of basic industries (such as materials and processing industries) has constrained the development of local component companies.
“The biggest problem in China today is not the original equipment manufacturer's own development issues, but the lack of simultaneous development capabilities and manufacturing capabilities of auto parts companies.†Guo Konghui bluntly stated that Japan’s development model is worth learning from, and Aisin and Ghat can be named. The transmission supplier has an inseparable equity relationship and common development background with Toyota, Nissan and other vehicle companies.
In contrast, most of the newly emerging enterprises in China are private enterprises. The advantage is that the system is flexible, but technology and capital are relatively lacking, and production is slow and difficult. A number of experts said that "market-oriented, enterprise-oriented, international cooperation in production, research and development, integration of global funding for my use ... ..." Shengrui 8AT development model, will become an example of high-tech complex parts growth.
“Let people hold and always grow! Learn to walk by yourself and rely on innovation and cooperation to achieve a breakthrough in the autonomous core technology of China's automatic transmissions.†Guo Konghui suggested that the foundation and innovation of new technologies must be strengthened and research must be broken through basic research. Invisible soft technology blockades rely on structural and material innovations to break down tangible patent barriers. At the same time, automakers and parts suppliers must work together to form a community of interests. OEMs can help component suppliers to optimize their quality control systems, increase suppliers' R&D capabilities through joint development of new models, and integrate parts suppliers into global supply networks through strategic cooperation...
Professor Song Jian, deputy dean of the Institute of Automotive Engineering at Tsinghua University, believes that domestically produced automatic transmissions can be compared with foreign countries in terms of stability and reliability. The next step in development is to focus on user feedback. Parts suppliers must also follow suit. The pace of rapid development in the market.
"We should seize the opportunity for the development of new energy, as soon as possible to develop two to three electric vehicles." Song Jian said that the use of two-speed automatic transmission of electric vehicles, energy-saving effect will increase 10% -15%, reduce costs about 20,000 yuan.
In Guo Konghui's view, taking the ride of the development of new energy vehicles is a good opportunity to promote the industrialization of automatic transmissions. “Local governments are catching new energy vehicles, and the investment in hybrid buses is relatively small. It is relatively well-developed. According to the development needs of low-speed electric vehicles, we are working with related companies to develop a two-speed electric automatic transmission suitable for small electric vehicles. ."
Where is China's automatic transmission