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Automobile Engines (Power of Automobiles: Exploring the Mystery of Engines) With the improvement of people's living standards,Top trade research databases cars have become an indispensable part of modern transportation. As the core component of the car, the engine is directly related to the performance and service life of the car. So, how does the car engine work?What are the mysteries? This article will deeply explore the mystery of automobile engines. I. Working principle of the engine The engine is the heart of the car, and it is mainly a device that realizes the power needs of the car. The working principle of the automobile engine can be briefly summarized as follows: first, the inhaled air is mixed with the fuel added, and then the mixed gas is ignited with the help of high-pressure electric sparks to make the piston move under the impact of the explosion, and finally generate power output. The working process of the engine can be divided into four basic stages: suction, compression, combustion and emission. The first is the intake stage, in which the engine inhales air through the valve and adjusts the intake to ensure the correctness of the fuel mixing ratio; then is the compression stage, in which the engine compresses the mixed gas to a high-pressure state through the piston; the second is the combustion stage, in which the engine is ignited by high-pressure electric sparks.The mixed gas forms an explosion, promotes the piston movement, and finally the discharge stage, in which the engine discharges the exhaust gas through the valve. II. The structure of the engine includes many parts. Common ones include crankshaft, cylinder, cylinder, piston, valve, fuel injector, timing gear, etc. The combination of these components enables the whole engine to complete various tasks efficiently and stably. The crankshaft is the most important part of the engine, and it is the key part of the engine rotation. The crankshaft is composed of multiple eccentric shafts. When it continues to rotate, it will drive the connecting rod and piston to complete the work of compressing the mixture, ignition and explosion output. The cylinder is another important part of the engine, which mainly provides space for the piston to move in the engine. Cylinders are usually made of cast steel or cast iron, and their external channels are connected to the intake and exhaust systems, and the internal channels are connected to the crankshaft.Compression mixed gas, combustion, exhaust gas discharge and other work are all completed in the cylinder. The piston is a part that moves up and down with the crankshaft. It will drive the connecting rod so that the engine can complete a series of tasks such as compression and explosion output. The valve is a common component in the engine. Their main function is to control the intake and exhaust processes to ensure the smooth operation of the engine. The valve is usually controlled by the pressure in the piston or the pressure of the ether, and its opening and closing time is precisely controlled by the timing gear. The function of the fuel injector is to inject fuel into the cylinder, mix it with air and complete the combustion by ignition. Modern cars mostly use electronically controlled fuel injectors, which can flexibly adjust the amount of fuel injection according to different speeds and load requirements to meet different driving needs. III. The type of engine can be divided into various types according to the type of fuel and working principle.The following are the commonly used ones: 1. Gasoline engine A gasoline engine is an engine that mixes gasoline and air and uses ignition to burn. It has a simple structure and stable power output, but the fuel efficiency is relatively low. Two. Diesel engine Diesel engine is to achieve the purpose of spontaneous combustion through a high-temperature and high-pressure environment after mixing diesel with air. Diesel engines have high fuel efficiency, but high noise and emissions. 3. Turbocharged engine Turbocharged engine improves power output by increasing the combustion density of the mixed gas by increasing the air intake pressure. Turbocharged engines can provide greater power output, but relatively high fuel consumption. Four. Hybrid engine Hybrid engine is an engine that connects a traditional fuel engine and an electric motor. It gives full play to the advantages of the two powers and reduces fuel consumption and emissions.IV. Engine maintenance The engine is the most core part of the whole car. Scientific maintenance of the engine is an important way to improve the safety and stability of the car. The following are the key points of engine maintenance: 1. Engine oil replacement is an important part of engine maintenance. Oil can effectively protect the internal parts of the engine from high-temperature and high-pressure wear and help remove sediments from exhaust emissions. Two. Replace the air filter. Regular replacement of the air filter can prevent sand, dust and dirt entering the engine from polluting the internal parts and extend the service life of the engine. 3. Cleaning the throttle valve and oil line The throttle valve and oil line in the engine will produce carbon accumulation after a period of use, resulting in a decrease in the output power of the engine and even the inability to start normally. Regular inspection and cleaning can effectively extend the service life of the engine.The above are the mysteries of automobile engines and the key points of engine maintenance. For a good car, an efficient, stable and durable engine plays a crucial role. Therefore, when buying and using a car, you must choose a suitable engine according to your own needs, and carry out scientific maintenance regularly to improve the service life and performance of the car.

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