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Recently, at the United Nations Climate Change Conference in Paris, the “Zero Emission Vehicle Alliance†consisting of Germany, the United Kingdom, the Netherlands, Norway, and parts of the United States announced that by 2050, countries within the Union will not allow the sale of fuel vehicles. It can be seen that the transformation of the automobile industry is the trend of the times. With the support of a number of favorable policies, the future of new energy vehicles will occupy the mainstream of the automobile consumer market.
A few days ago, a news caused widespread concern in the automotive industry: Germany, the United Kingdom and other zero-emission automobile alliance countries proposed to completely ban the production and sales of fuel vehicles by 2050, and the future automobile market will be replaced by electric vehicles and hydrogen energy vehicles. .
Previously, Toyota Motor Corporation, which is known for producing hybrid vehicles, has proposed a similar plan to completely stop the production of pure gasoline and diesel vehicles before the arrival of 2050.
It can be said that the Zero Emissions Alliance is basically in line with Toyota's thinking, that is, to solve the medium and long-term emissions and environmental problems by using at least a hybrid electric mode, and thus get rid of the long-term dependence on petrochemical energy.
The "mixed" and "not mixed" disputes around the future development direction of new energy vehicles, the direction of the electric development has become a global consensus. It is only during the transition period to pure electric or fuel cell vehicles that there is a need to develop hybrid vehicles, which is different between China and other major countries.
At least from China's existing definition of new energy vehicles and product catalogues, unless plug-in hybrids, other types of products are not covered by the corresponding national and local subsidies. Of course, this is inseparable from China's current related industrial structure and product structure. From the point of properly protecting domestic industries and encouraging independent research and development, this approach is also not feasible.
In fact, from the perspective of energy saving and reduced use of petrochemical energy and reducing emissions, any form of hybrid oil or other hybrids can be more energy efficient than pure fuel vehicles at both ends of integrated energy use and energy recovery. Advantages, as early as a few years ago, it was supported by most experts including the overall expert group leader of the National 863 Program Energy Conservation and New Energy Vehicles Major Project and Tsinghua University Professor Ouyang Minggao.
In many interviews, China Industry News reporter also learned that even in a wide range of areas including large vehicles such as buses, hybrid power is still a very realistic medium- and long-term solution, not as some people say only Vitality within three to five years.
The problem of domestic hybrid lightweighting has not been solved. As far as some related products of China's own brands are concerned, in the development of hybrid vehicles, most related manufacturers have not formed a true hybrid design thinking. At present, the main auto manufacturers have developed and produced only the hybrid electric vehicles of ordinary fuel vehicles. They have not redesigned the fuel engines in strict accordance with the needs of hybrid power, or at least did not pay attention to the engine as a special breed.
Needless to say, this can only be seen from the fuel engine displacement and the overall weight of some hybrid vehicles in China.
According to the data provided by Chen Yilong, the consultant of China Automotive Engineering Society and the director of the Expert Committee of Automotive Lightweight Technology Innovation Alliance: the hybrid models produced by the same chassis, the weight of domestic independent brand products is usually higher than the foreign mature products by more than 10%, and some It can even reach more than 30%. If you compare the two cars of the same chassis size, if the weight of the domestic related models is 1.2 times that of the foreign models, then the relevant driving range, acceleration performance, etc. will not be better than the ones. It is impossible for a car to gain an advantage in a "running" race.
Dedicated engine is more powerful In a recent technical seminar, Dr. Zhang Yaming, deputy general manager of China Automotive Engineering Research Institute and Chongqing Kairui Electric Vehicle Systems Co., Ltd. pointed out that from the hybrid products of foreign countries such as Toyota Prius third generation products, The Toyota Lexus IS300h/GS300h, the Honda Accord PHEV, and the Honda Fit and Binzhi hybrids are all equipped with a dedicated Atkinson cycle engine.
Compared with the traditional Otto cycle engine, the Atkinson cycle engine has certain advantages. For example, the Atkinson cycle engine has excellent partial load economy, and the motor can achieve higher economy. In the start-up and low-speed phases of the car, the high torque of the motor at low speeds just compensates for the low-speed torque difference of the Atkinson cycle engine, and the thermal efficiency of the Atkinson cycle engine can better meet the characteristics of such eco-friendly models. . Therefore, the use of the Atkinson cycle engine in the hybrid electric vehicle engine has become one of the symbols of the advanced hybrid model.
From the comparison of the fuel consumption levels of various hybrid vehicles provided by Dr. Zhang Yaming, it can be seen from the results of the US EPA test cycle that the specific fuel consumption per 100 km in various hybrid models (L / ton) In comparison, the best result of a hybrid-serial-parallel hybrid vehicle is 2.97 liters/ton; the fuel consumption results of the four hybrid-power split hybrids are: 3.03 liters/ton, 3.28 liters/ Tonnes, 3.35 liters/ton and 3.36 liters/ton; the results of the three parallel P2 hybrids are: 3.18 liters/ton, 3.58 liters/ton and 3.76 liters/ton; the results of an extended-range hybrid vehicle It is 3.71 liters / ton. In comparison, the fuel-saving effect of the hybrid-serial-parallel hybrid is the most prominent.
Relying on the continuous advancement of technology, the future automobile world will be the era of the gradual decline of traditional fuel vehicles. The end of pure fuel vehicle production in 2050 is not just a dream.
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