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After five years the car may be more fuel-efficient Engine thermal efficiency increased to 50%

1/18/2018 9:56 AM
The energy in the car tank, about 1/3 into power. On January 15, at the International Symposium on Transformation and Upgrading of Traditional Fuel Vehicles' Power Technology Technology Conference held in the China Science Common Rail and Technology Hall, experts from various countries said that there is great hope that the thermal efficiency of the engine will be raised to 50%. Ministry of Science and Technology Wan Gang and experts conducted an in-depth discussion.
    Automotive gasoline engine thermal efficiency at 25% -35%, diesel engines a few percentage points higher. Mass production of gasoline engine, the thermal efficiency of 40%. In the past 20 years, this record only increased by 3 percentage points. However, at this meeting, all experts are still optimistic about the engine level. 'There are an endless stream of new technologies for internal combustion engines that will occupy an important place for a long time.' Su Wanhua, an academician of the Chinese Academy of Engineering and an expert in internal combustion engines, said at the meeting that the major engine manufacturers in the world are now developing advanced combustion technologies as well as intelligent control, Various loss reduction techniques. The laboratory has a lot of technical reserves. The limit of thermal efficiency of internal combustion engine is about 60%. The bigger the engine, the easier it is to be. Thermal power plants can reach more than 50% thermal efficiency, the car will 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, the CEO of AVL Austria, also said that at present, the internal combustion engines of various companies are making sound competition and carbon zero emission is the common goal. AVL achieved a 50% thermal efficiency on a truck engine powered by the U.S. Department of Energy and will further increase it. By using a mixture of 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 Common Rail Nozzle also developed a technology to burn naphtha, which is the raw material for refining gasoline, so to avoid the cost of refining gasoline. Wu Zhixin, deputy director of China Automotive Technology Research Center, suggested that the best efficiency of the engine can be 50%, but the actual driving efficiency is far from reach. Electric systems are needed to help internal combustion engines play their part. Moreover, different countries have different road conditions and should adopt different technologies.

   China will focus on R \u0026 D resources in areas such 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-treatment. Wan Gang also pointed out that through the fuel cell to enhance engine efficiency is one direction. Liszt said there are 150 experts worldwide in the development of fuel cells. Pizinger predicted that by 2025, with the cost of lithium batteries and fuel cell vehicles, each expensive electric vehicles than the average 7400 euros. 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 Common Rail Injector as a vehicle power transformation and upgrading of an important direction, and strive to 2022, built 100,000 fuel cell production base level of fuel cells to achieve million sets of fuel cell engine applications , Thousands of vehicles to promote the total estimated R \u0026 D costs over 5 billion yuan.

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