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Four-cylinder gasoline-powered engine Four-cylinder gasoline-powered engine is UEFA TVan engine widely used in automobiles, motorcycles and other mechanical equipment. It is an engine with simple engine structure, easy maintenance, stable and reliable performance, and superior durability. In modern society, everyone has more or less used vehicles or equipment equipped with four-cylinder gasoline-powered engines, which has become an indispensable part of life. I. Composition of a four-cylinder gasoline-powered engine A four-cylinder gasoline-powered engine is composed of multiple parts, including cylinder, piston, crankshaft, connecting rod, valve, gasoline injector, spark plug, etc. The cylinder is a part of the cylinder block, which is generally made of cast iron or aluminum alloy. In the cylinder, the pistonMove up and down, accept the combustion force of the sprayed gasoline and air mixture, and pull the crankshaft through the connecting rod to realize the movement of the engine. The piston is a part of the cylinder, which is mostly made of cast iron or aluminum alloy. It has an axial sealing device, which can fully accept external pressure and bending force, and change its volume to achieve gas compression and discharge. At the same time, it plays the role of a combustion chamber in the engine, and the combustion of gasoline and air mixture generates explosive energy, thus promoting the crankshaft to realize the rotation of the engine. The crankshaft is the core part of the engine, which is mostly made of cast steel. During the working process of the engine, the crankshaft and the piston are pulled to convert the linear motion of the piston into continuous circumferential motion through the connecting rod, convert the thermal energy into mechanical energy, and drive the automobile or mechanical equipment to achieve movement. The connecting rod is the part that connects the piston to the crankshaft. It is composed of a small top head, a connecting rod body and a large bottom head.In the process of engine operation, the connecting rod rotates with the crankshaft to provide power. The valve is an important part of the engine, which realizes the exit and entry of air and controls the amount of gasoline injection to achieve the movement of the engine. In modern cars, the valves have been controlled by the electronic control system to achieve more efficient fuel economy and less pollution emissions. The gasoline injector is an important part of the engine. By processing a mixture of gasoline and air, it is injected into the fuel chamber from the coal injection port, so as to achieve efficient fuel economy and less pollution emissions. Spark plug is an electrification tool that ignites gasoline and gas mixtures by igniting the energy stored in fission, forming a high-pressure gas, thus driving the engine movement. II. Advantages of four-cylinder gasoline-powered engine1. The stable and reliable four-cylinder gasoline-powered engine is an in-line engine structure. It has a small volume and a fast engine speed, thus achieving a high power output, and its smooth performance is strong at high engine speed. At the same time, the four-cylinder gasoline-powered engine also has high reliability and durability, which can adapt to the changing needs of roads and applications. 2. Green and environmentally friendly four-cylinder gasoline-powered engines produce less exhaust emissions in sports and less pollution to the environment, which can better protect the environment. At the same time, compared with diesel engines, four-cylinder gasoline-powered engines emit fewer nitrogen oxides and particles, and the pollutants produced are easier to handle. 3. The structure is simple and easy to maintain. The structure of the four-cylinder gasoline-powered engine is relatively simple and easy to maintain. In addition, compared with high-performance engines, the number and complexity of parts of the four-cylinder gasoline-powered engine are low, so as to avoid some difficulties and challenges brought about by the operation and maintenance of the engine. III. Conclusion The four-cylinder gasoline-powered engine is a kind of engine with stable and reliable performance, green and environmental protection, simple structure and easy maintenance. It has become an indispensable part of life and has a broad application prospect in the future. As consumers, we should understand the advantages and scope of application of this engine, and protect and make full use of the high-quality performance of four-cylinder gasoline-powered engines, so as to promote the sustainable and healthy development of society.

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