The energy in the car tank, about 1/3 into power. The proportion can be higher? 15, held in China Science and Technology Hall 'Traditional Fuel Vehicle Power Technology Transformation and Upgrade International Symposium', experts from various countries said 'engine Thermal efficiency increased to 50% 'great hope. Minister of Science and Technology Wan Gang and experts conducted an in-depth discussion.
The gasoline engine used in automobiles has a thermal efficiency of 25% -35% and a slightly higher percentage of diesel engines, and the mass production of gasoline engines with a thermal efficiency record of 40% .This record only increased by 3% in the past 20 years. On all sides experts are still optimistic about the engine level.
'An endless stream of new technologies for internal combustion engines will occupy an important position for quite a long time.' At the meeting, Su Wanhua, an academician of the Chinese Academy of Engineering and an expert in internal combustion engines, said that major engine manufacturers in the world are now developing advanced combustion technologies as well as intelligent control, A variety of techniques to reduce losses Laboratory has a lot of technical reserves.
The limit of the thermal efficiency of the internal combustion engine is about 60%, the larger the engine, the easier it is to be. The steam turbine of the power plant can achieve a thermal efficiency of over 50% and the automobile will also be close to this level.
Speaking at the conference, Germany's FEV Engine Company CEO Stephen Pissinger said that the thermal efficiency of internal combustion engines in Germany has been raised to 50% from 39% in the past and the technology of exhaust gas recirculation will be popularized in the future.
Helmut Liszt, CEO of Austrian AVL, also said that at present the internal combustion engines of each company are in positive competition with zero emission of carbon being a common goal. AVL achieved 50% on a truck engine supported by the U.S. Department of Energy Thermal efficiency, and will be further improved.
Su Wanhua said that through the use of hybrid fuels, the University of Wisconsin engine thermal efficiency can reach 54%, and even said up to 57%, Su Wanhua laboratory has reached 54% .Su Wanhua team also developed a technology to burn naphtha, which is refining The system of gasoline raw materials, so to avoid the cost of refining gasoline.
Wu Zhixin, deputy director of China Automotive Technology Research Center, proposed that the best efficiency of the engine can be 50%, but the actual driving efficiency is far less than that of the conventional systems. The electric system is needed to help the internal combustion engine to exert its efficiency. Moreover, the road conditions in different countries should be different technology.
Wan Gang said China will focus on investing R & D resources in such areas as high-intensity complete machine technology, high-performance key component technology, advanced combustion technology, low module technology, low-power consumption accessories, waste heat utilization and post- Improving engine efficiency with fuel cells is one direction.
Liszt said 150 experts worldwide are working on fuel cells and Pizinger predicts that each 20,400 euros will cost you 7400 euros more than a typical electric car in conjunction with the cost of lithium batteries and fuel cells.
Hirai Junhiro, vice president of Japan Nissan, said Nissan is combining motor and internal combustion engine, so that by 2020, the internal combustion engine to become a power platform for a generator.
Ministry of Science and Technology Qin Yong, director of high-tech Division said they will hydrogen fuel cells as a vehicle power transformation and upgrading of an important direction, and strive to 2022, built 100,000 fuel cell production base level fuel cell to achieve million sets of fuel cell engine applications , Thousands of vehicles to promote the total estimated R & D costs over 5 billion yuan.
