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Engine structure: internal combustion mechanism construction,Binance US working principle and development trend. The engine is the "heart" of modern cars. The quality of the structure and performance of the engine will directly affect the performance and practicality of the car. The structure of the engine refers to the structure of the engine, mainly including several aspects such as the internal combustion mechanism of the engine, the working principle and the development trend. The following will introduce them in detail from these aspects. I. Internal combustion engine of internal combustion mechanism refers to the thermal energy generated by the internal combustion process of fuel to drive the piston, thus driving the operation of the car. Common internal combustion engines mainly include gasoline engines and diesel engines. Their structures are different, and the following is an overview of them. 1. Gasoline engine gasoline engine includes cylinder, piston, crankshaft, valve, gasoline injector and ignition system and other components.Its working principle is that the fuel is mixed with oxygen and enters the combustion chamber. After ignition, it burns to produce high-temperature and high-pressure gas, and the piston drives the crankshaft to complete the success. Heat energy is generated by combustion and converted into mechanical or electrical energy through the crankshaft to automatically control the operation of the car. Two. Diesel engine Diesel engine includes cylinder, piston, crankshaft, fuel injection pump, fuel injector and other components. Its working principle is to spray air into the combustion chamber in a high-pressure state, and then spray fuel from the high-pressure nozzle, burn in a high-temperature and high-pressure state, and push the piston to rotate the crankshaft to drive the operation of the car. II. Working principle of the engine The working principle of the engine is based on the first and second laws of thermodynamics, and uses combustion heat energy to convert it into kinetic energy to complete the operation of the engine. Specifically, it includes the following processes: 1. The intake stroke piston moves down from the upper dead point to pump the air in the cylinder into the cylinder.The intake valve opens to enter the fresh air, and the exhaust valve is closed at the same time. Two. Compression stroke due to the upward movement of the piston, the air is compressed, so that the gas reaches a state of high pressure and high temperature, creating conditions for ignition. At this time, the intake valve is closed and the exhaust valve is still closed. 3. The combustion stroke ignition system puts the spark into the combustion chamber to make the mixture burn. Because the air is compressed, the combustion time is very short and will be completed soon. At this time, the intake valve is closed, the exhaust valve begins to open, and the exhaust gas begins to be discharged. Four. The exhaust stroke piston moves up, and the exhaust valve is fully open to exhaust the exhaust gas. The intake valve is kept closed during this process to prevent fresh air from being discharged. The above process shows the internal working principle of the engine, which can drive the car through the continuous cycle of different strokes. III. SendThe development trend of motivation. With the continuous development of modern cars, engine technology is also constantly innovating and improving. The current engine development trend mainly includes the following: 1. Electric engine Electric engine refers to the use of electric motors to drive cars. Compared with traditional internal combustion engines, it does not require pollutants such as fuel, heat and exhaust gas, so it is more environmentally friendly. Two. Hybrid engine Hybrid engine combines internal combustion engine and electric motor to improve fuel efficiency, reduce exhaust emissions and reduce fuel consumption. 3. Fuel cell engine Fuel cell engine, also known as hydrogen fuel cell engine, refers to an engine that generates electrical energy from hydrogen and oxygen in electrochemical reactions and outputs electrical energy to drive the car. Four. Lightweight technology Lightweight technology refers to the use of lightweight materials to reduce the overall weight of the car, including the weight of the engine, so as to improve the energy efficiency and performance of the car.In a word, the structure and performance of the engine are important factors that determine the performance and practicality of the car. Through continuous innovation and improvement, the engine will be able to constantly adapt to the changes in the automobile industry and provide better impetus for people's travel.

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