The gearbox is one of the most important parts of the car. In the past, the most talked about may be how to make its performance better and more efficient. Now, as the global automotive industry continues to develop in the direction of electrification, intelligence, and information technology. , driving almost all key components of the car has undergone earth-shaking changes, gearbox technology is also around how to be more suitable for the development of hybrid vehicles, electric vehicles set off a new round of changes. Especially this year, topics such as how to choose the number of stalls for electric vehicles and how to choose hybrid strategies became the focus of the industry's hot debate. Under this background, on April 20-21, 2017, the China Association of Automotive Engineers and China Automotive Hansberg Management Consulting Co., Ltd. jointly organized the 9th International Symposium on Transmission and Drive Technology (TMC2017). This meeting focused on variable speed control. , development technologies such as matching standards, hybrid transmission technologies, core technologies for single-speed and multi-speed electric vehicles and integration of drive systems for electric vehicles, and medium and long-term technological development strategies for how Chinese independent brands choose hybrid power, and the construction of multi-speed transmissions for electric vehicles Type selection and technical challenges and other topics to expand. This article focuses on the development trend of the future gearbox and the countermeasures of each car company, thus providing more strategic support for the development of China's gearbox technology. Forward-looking technology, gearbox technology Fu Yuwu: With the development of China's automobile industry, transmission technology is developing more and more rapidly, and the scale and quality of transmissions are getting higher and higher. There is no reason why we should not pay attention to transmission technology and drive technology. It is expected that in the future, traditional transmissions such as CVT, AT and DCT will be developed in the direction of high efficiency and multi-stories. Hybrid transmissions will be developed in the direction of specialization, and electric vehicle drive systems will be developed in the direction of high efficiency and low cost. FAW Liang Weipeng: From the perspective of global development, MT will still occupy the major market share in the next 10 years, while in the Chinese market, professional sales will continue to increase, but China's development will lag slightly behind the global development trend. In addition, due to the demand for new energy products, the future automobile industry will also propose requirements for electromechanical hybrid transmissions. The customer demand latitude in the Chinese passenger car market and government regulations and policies will change significantly in the next 10 years. FAW has accordingly developed a “low carbonization†technology strategy for automotive powertrains and continues to practice and innovate. These low carbonization strategies Including: establishing a customer demand model, developing technologies and products based on market and regulations; developing two powertrain platforms for ICE and NEV; formulating NEV powertrain “CFCR-IV for technical addition†and “CFCR-V for technical subtraction "The line; the new technology innovation and LeanDesign to reduce the cost of technology upgrades. Magna Mr. John D. Zalewski: Now that many cars have start-stop systems, there are certain combinations of driving habits in North America, but more importantly, regulations are driven. At the same time there will be high-voltage hybrid plug-in, weak mixing, we see that the structure of the PR and other structures will use 48-volt system, which is due to cost requirements, and over time, more and more cars will Equip such technology. However, if a car with a heavier weight requires more power, a dual clutch or other power strategy will be used. By 2025, we will have a lot of electric vehicles, which will require new powertrains and better integration to reduce costs. Magna will analyze trends and formulate future road maps, including the four aspects of CO2 regulations first; second, changes in travel, we see that there are shared trips, and personal travel habits have changed; in addition, the trend of globalization In the process, smaller displacements, higher turbochargers, and more transmissions with multiple speed ratios are all due to trends. Finally, the changes in the platform are certainly not just platforms for vehicle structures, but also powertrains. Platforms, more and more vehicles will use such a common platform, the amount will increase, with such a quantity, our transmission will also have a corresponding match, while achieving energy-efficient fuel consumption win-win. Schaeffler Prof.Dr.-ing.Peter Gutzmer: In the industry, there are a lot of big driving factors in the changes, including technical changes and changes in laws and regulations, so in this tide to find innovation, here In the background we have launched Schaeffler's new strategy - driving the future with efficiency. There are four major priorities in this strategy. The first focuses on the continuous development of urbanization and changes our traditional systems. Second, we must establish a new development ecosystem and consider what kind of development is needed for the next generation of electric vehicles. Thirdly, the political and regulatory factors are also very critical, and we need to consider that, for example, the electrified powertrain will only be the only way to meet the tightening regulations in the future. Therefore, electrification was only an option and it is now mandatory. The options, we must think about how to meet in the electrification development process, this is our development focus; Fourth, the cost optimization, if we want to further optimize the transmission system, we must make greater actions in cost optimization. ZF Dr.-lng.JurgeGreiner: For the proportion of automatic transmission and the proportion of other ratios, we can see that the proportion of CVT and DCT continues to rise. This is the future trend, AMT, AT will decline. In Europe 60% or MT, China is similar, but the manual transmission will change greatly in coming 15 years. The proportion of some new transmissions will increase now. I expect a future distribution of the Chinese market may be similar to Japan and the United States, that is, 80%, 90% will be automatic transmissions. As for the technical development of traditional transmissions, we do not want to be pessimistic. We still have great potential. Many optimization prospects are in electromechanical control, clutch separation and other components, which can be optimized. I think these are the development and optimization prospects in the traditional transmission field. The main optimization direction is to increase the transmission efficiency. The right side can be seen in a variety of applications. Can be applied to sports cars, such as Rolls-Royce, Bentley, and pick-up trucks, are all areas where our transmission can be applied. The use of transmissions in the driverless area requires a high level of security. At the same time, it cannot be compromised by reducing comfort. It is necessary to ensure environmental protection. This is the direction in which the driverless transmission will be used in the future. AVLListGmbH Mr.Mario Brunner: There is still a difference in the opinions of everyone in 2025. We think that there will be a lot of traditional transmissions at that time, so we have to upgrade the traditional powertrain. There will be a relatively large market in the mix. The motor needs to be inherited in the gearbox, which is about 20 kilowatts, and we need to have electric drive function, so the motor must be placed in the transmission. In addition, the full potential of plug-in hybrids and special blending also has the potential to significantly reduce costs. Pure electric vehicles need to focus on efficiency improvements, so that they can increase the mileage of electric vehicles. Bosch Transmission Technology Co., Ltd. Mr. Markus Kunze: Different transmission development trends are different. The growth trends of global CVT and DCT are relatively close. In China, the proportion of these two transmissions is even higher. In 2017, CVT is the market share of 32%, and it will exceed 41% by 2024. CVT is an advanced transmission with a growing market share in China, and because of its excellent fuel efficiency, it also has a cost advantage. CVT makes the engine work under the best fuel efficiency, so CVT is very consistent with our motorization trend, and it is also consistent with the interconnection.
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Expert Analysis: The Future Development and Countermeasures of Transmission Technology in China
The gearbox is one of the most important parts of the car. In the past, what people talked about most probably was how to make it better and more efficient.
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