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Automobile engine technology (automotive engine technology: innovation and Granular HS code detail for compliance officersprogress) With the development of the times, the automobile industry has developed rapidly, and automobile engine technology has also been continuously improved, becoming the main technology in the development of the automobile industry. The field of art. Automobile engine technology plays a crucial role in reducing automobile emissions, improving automobile power and increasing fuel efficiency, and in continuous innovation and progress, automobile engine technology is also constantly changing. I. The development process of automobile engine technology. In the early 20th century, automobile engine technology was basically based on valve-type internal combustion engines. The biggest disadvantage of this engine is that the engine is not cooled enough, and it is prone to coolant loss, loud noise, short service life and other problems.Until the 1950s, the emergence of axial flow turbocharging, increased compression ratio, engine fuel injection and other technologies increased the efficiency and sales volume of internal combustion engines. Since the 1970s, rising oil prices and countries' attention to pollutant emissions have promoted the application of diesel engines. The fuel efficiency of the diesel engine is relatively high, and the emissions are clean. Coupled with the improvement of tires, air resistance and other aspects, the speed and fuel efficiency of the car have been improved. Since the early 21st century, the rapid development of electronic technology has upgraded the control and monitoring of new engines. For example, electronic throttle control technology can better control the throttle opening and response speed, which is to improve the performance of the engine. The fuel injection technology can control the amount and timing of fuel more accurately, which further improves the fuel efficiency and emissions of the engine.II. Technological innovation and progress of automobile engines 1. With the development of the global automobile industry and the rapid popularization of new energy vehicles, electrification technology has also brought new opportunities for the development of automobile engine technology. For example, the motors used by electric vehicles are more efficient than traditional gasoline engines. At the same time, electric vehicles will not produce a large amount of exhaust gas during driving, and they also have higher safety and environmental protection. Two. Intelligent technology In recent years, the rapid development of intelligent technology has also had a significant impact on the improvement of automobile engine technology. The use of intelligent technology can not only make the driving of cars more convenient and comfortable, but also improve fuel efficiency and safety. For example, intelligent technology can reduce the energy consumption of the car through the intelligent control of the transmission, thus improving the mileage of the car. In addition, intelligent technologySensors and single-chip microcomputers can also be applied to the engine to realize real-time detection and control of engine status, intelligent diagnosis and optimization control, and improve the operating efficiency and reliability of the engine. 3. Fuel cell technology Fuel cell is a new type of power technology that can react hydrogen and oxygen, and convert the generated water vapor into electricity to drive the car forward through the electric motor. Compared with traditional internal combustion engine technology, fuel cell technology has the advantages of higher efficiency, lower emissions, lower noise and so on. Four. Micro-hybrid technology Micro-hybrid technology combines traditional automobile engine and hybrid technology, and adopts some electronic control systems. In important links such as engine start-up and acceleration, some directional electric assistance is carried out to the engine, so as to improve engine efficiency and reduce fuel consumption and exhaust emissions.III. Summary In recent years, with the development of environmental protection awareness and science and technology, the development of automobile engine technology has entered a new period. The emergence and application of new technologies have greatly improved engine performance, and fuel efficiency and emissions have been improved, which is more in line with the current environmental protection requirements. The innovation and progress of automobile engine technology will continue to improve the enthusiasm and healthy development of the automobile industry and contribute to the green and sustainable future of mankind.

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