Since the 1980s, many international big cities have been aroused global attention due to the deterioration of the air quality due to the influence of automobile engine emissions. On the other hand, the more serious real problem is energy. The two energy crises that occurred in the 1970s once caused panic in developed countries. Faced with the concentration of petroleum-producing areas in a few countries, it has a large regional monopoly, and all countries have to examine their own national energy security issues. At the same time, the research of various new types of power vehicles such as hybrid vehicles, fuel cell vehicles and electric vehicles has risen rapidly. Driven by the mass media, many people are beginning to doubt the value of research and development of vehicle internal combustion engines.
Energy shortages and environmental standards The sustainable development of energy and the environment is a fundamental issue for automotive engines. The modern transportation industry is highly dependent on oil, and 70% of the world's oil is used for transportation. Compared with natural gas, coal and other energy sources, petroleum resources are a shortage of resources. China's oil recoverable resources amount to about 14.1 billion tons, accounting for only about 4.5% of the world's total. China began to become a net oil importing country in 1993. In 2000, it imported more than 70 million tons of oil. The automobile industry, which is a large consumer of oil, consumes about 50% of China's petroleum industrial products.
The lack of oil resources has affected the continuous development of the internal combustion engine industry and also endangered the national energy security. In the world's known oil reserves, the oil-producing countries that can invest in the international market are again concentrated in the Middle East. Therefore, the political and monopoly factors of oil prices are very large. The instability of oil use in the world has made various industrial countries cautious about increasing consumption consumption, various measures to reduce fuel consumption of internal combustion engines, and even laws and regulations have contributed to the continuous improvement of engine economy. Therefore, reasonable and economical use of oil and the search for alternative fuels are important support for the future development of the internal combustion engine industry.
On the other hand, China has abundant coal resources and a considerable amount of natural gas and coalbed methane that can be exploited. These energy sources can be converted into coal-to-gasoline, coal-to-diesel, dimethyl ether, alcohol fuels, and CNG, LNG, LPG, etc. For internal combustion engines. The current use of alternative fuel engines can achieve low emissions and ultra-low emissions. Therefore, the continuous development of the internal combustion engine industry must consider the diversification of fuel.
With the increasing emphasis on environmental protection in the world, China's automobile industry has been determined in practice for several years to be based on the European automotive regulatory system. The "Automobile Emission Control Technology Policy" issued jointly by China's environmental protection, automobile, and transportation sectors clearly stipulates the use of Euro I emission regulations in 2000, Euro II in 2004, and Euro III in 2008. In 2010, it strives to be in line with international standards (Beijing, The implementation deadlines for cities such as Shanghai and Guangzhou will be advanced. This means that foreign countries have spent the course of 30 years. We must complete this within 10 years.
Due to the requirements of emission regulations, the technical progress of internal combustion engines is centered on reducing emissions, and the goal of advanced energy-saving and low-pollution engines is the main theme of design. This requires the use of high technology to improve the technical content of internal combustion engines, to improve the quality of fuel and lubricants, and to achieve diversified fuels and diversified power to meet increasingly stringent emission regulations.
The future engine focuses on diversification Facing the increasingly stringent requirements of emission regulations and the increasingly exhausted nature of petroleum resources, emissions and energy have become the main driving force for the sustainable development of automobile engines in the future. As a result, the diversification of internal combustion engine energy sources and the diversification of power devices have emerged.
The engine of the future is summarized in the following aspects:
The advanced gasoline engine combined spark ignition internal combustion engine is a new trend in the development of gasoline engines. Faced with the fierce competition from diesel engines and alternative fuel engines, gasoline engines are not sitting still, but through the use of advanced technology such as in-cylinder direct injection technology, supercharger technology, low compression and high expansion cycles, variable valve switch and lift, to greatly improve the engine The thermal efficiency reduces emissions. Gasoline engines are absorbing their advantages by absorbing the advantages of diesel engines. On the basis of inheriting various innovations, some more advanced and sophisticated compound gasoline engines will surely be displayed in front of people. The life of gasoline engines will be longer than people originally expected. (To be continued)
Energy shortages and environmental standards The sustainable development of energy and the environment is a fundamental issue for automotive engines. The modern transportation industry is highly dependent on oil, and 70% of the world's oil is used for transportation. Compared with natural gas, coal and other energy sources, petroleum resources are a shortage of resources. China's oil recoverable resources amount to about 14.1 billion tons, accounting for only about 4.5% of the world's total. China began to become a net oil importing country in 1993. In 2000, it imported more than 70 million tons of oil. The automobile industry, which is a large consumer of oil, consumes about 50% of China's petroleum industrial products.
The lack of oil resources has affected the continuous development of the internal combustion engine industry and also endangered the national energy security. In the world's known oil reserves, the oil-producing countries that can invest in the international market are again concentrated in the Middle East. Therefore, the political and monopoly factors of oil prices are very large. The instability of oil use in the world has made various industrial countries cautious about increasing consumption consumption, various measures to reduce fuel consumption of internal combustion engines, and even laws and regulations have contributed to the continuous improvement of engine economy. Therefore, reasonable and economical use of oil and the search for alternative fuels are important support for the future development of the internal combustion engine industry.
On the other hand, China has abundant coal resources and a considerable amount of natural gas and coalbed methane that can be exploited. These energy sources can be converted into coal-to-gasoline, coal-to-diesel, dimethyl ether, alcohol fuels, and CNG, LNG, LPG, etc. For internal combustion engines. The current use of alternative fuel engines can achieve low emissions and ultra-low emissions. Therefore, the continuous development of the internal combustion engine industry must consider the diversification of fuel.
With the increasing emphasis on environmental protection in the world, China's automobile industry has been determined in practice for several years to be based on the European automotive regulatory system. The "Automobile Emission Control Technology Policy" issued jointly by China's environmental protection, automobile, and transportation sectors clearly stipulates the use of Euro I emission regulations in 2000, Euro II in 2004, and Euro III in 2008. In 2010, it strives to be in line with international standards (Beijing, The implementation deadlines for cities such as Shanghai and Guangzhou will be advanced. This means that foreign countries have spent the course of 30 years. We must complete this within 10 years.
Due to the requirements of emission regulations, the technical progress of internal combustion engines is centered on reducing emissions, and the goal of advanced energy-saving and low-pollution engines is the main theme of design. This requires the use of high technology to improve the technical content of internal combustion engines, to improve the quality of fuel and lubricants, and to achieve diversified fuels and diversified power to meet increasingly stringent emission regulations.
The future engine focuses on diversification Facing the increasingly stringent requirements of emission regulations and the increasingly exhausted nature of petroleum resources, emissions and energy have become the main driving force for the sustainable development of automobile engines in the future. As a result, the diversification of internal combustion engine energy sources and the diversification of power devices have emerged.
The engine of the future is summarized in the following aspects:
The advanced gasoline engine combined spark ignition internal combustion engine is a new trend in the development of gasoline engines. Faced with the fierce competition from diesel engines and alternative fuel engines, gasoline engines are not sitting still, but through the use of advanced technology such as in-cylinder direct injection technology, supercharger technology, low compression and high expansion cycles, variable valve switch and lift, to greatly improve the engine The thermal efficiency reduces emissions. Gasoline engines are absorbing their advantages by absorbing the advantages of diesel engines. On the basis of inheriting various innovations, some more advanced and sophisticated compound gasoline engines will surely be displayed in front of people. The life of gasoline engines will be longer than people originally expected. (To be continued)
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