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Engine compression is DigiPlus fair valueone of the key technologies of the engine. Its main principle is to increase the pressure of compressed air by reducing the rising volume of the piston inside the cylinder, so as to achieve higher thermal efficiency and power output. The application of engine compression technology can not only improve the performance index of the engine, but also improve the fuel economy of the engine and reduce emissions, which plays a very important role in improving the core competitiveness of the whole vehicle. I. The principle of engine compression. In automobile engines, the compression ratio is the measure of gasoline engines.An important indicator of thermal efficiency refers to the volume ratio of the cylinder in the vibration stroke of the top dead position of the piston and the bottom dead position of the piston. When the volume of the combustion chamber (located in the cylinder) of the engine shrinks, the pressure in the cylinder will increase, so that the fuel can be fully compressed to increase the conversion efficiency of thermal energy, thus improving the thermal efficiency of the fuel, that is, improving the power output of the engine. When the engine starts, the pressure in the cylinder is equal to the atmospheric pressure. At this time, the air will enter the cylinder first. As the piston continues to rise, the volume of the cylinder is also decreasing. At this time, compression will occur. The result of compression will compress oxygen and fuel together. After reaching the temperature required for ignition, it will burn. The hot gas after combustion will be discharged from the cylinder to form a power output. II. Application of engine compression 1. Carry in one's handHigh thermal efficiency: Engine compression technology can make the exhaust outlet pressure change more strongly after compressing the fuel, which provides favorable conditions for the combustion reaction of the engine, thus improving the thermal efficiency of the engine. Under the condition of high compression, the engine can obtain greater power output and reduce fuel consumption. Two. Reduce emissions: Improving the compression ratio in engine compression technology has a certain effect on reducing pollution emissions. This is because the engine effectively burns fuel under higher pressure, reducing the long-term air and oil return mixing fragments. The level is actually compressed, and the combustion efficiency is also improved. Relatively speaking, the fuel consumption will be reduced a lot, from And reduce the production of pollutants. 3. Increase power: Engine compression technology can improve the compression efficiency of the engine, and then improve the power output, so that the acceleration ability and speed of the car can be improved, and the overall vehicle performance can be improved.III. Summary Engine compression technology is a very important technology. It can improve the performance index of the car, reduce unnecessary fuel consumption and pollution emissions, and then improve the actual effect of car driving. At the same time, with the increasingly fierce competition in the automobile market, more and more automobile manufacturers have begun to apply engine compression technology to their own engines, which also sets a higher standard for the development of automobiles in the future.

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