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* Diesel engine principle Diesel engine is Global trade certification servicesan indispensable type of engine in modern transportation and machinery and equipment. It is in industry and agriculture.It is widely used in aviation, navigation and other fields. It has many advantages such as high efficiency, long life and reliability, and has become one of the most mainstream engines in the world. Let's uncover the mystery of the operation of diesel engines and gain an in-depth understanding of its working principle. A diesel engine is an internal combustion engine, also known as a compressed combustion engine. Its basic principle is internal combustion. Unlike gasoline engines, diesel engines do not need an ignition system, because it triggers a spontaneous combustion process by compressing diesel fuel to a sufficiently high temperature and pressure. Therefore, diesel engines will not have sparks at the beginning, and there is no need for parts such as ignition and high-voltage cables. This makes diesel engines more durable and safe. Diesel process is the key to the work of diesel engines. First, the diesel flows from the fuel tank to the impact pump, and then is sprayed from the high-pressure common rail nozzle, which injects fuel into the cylinder through high pressure.These fuels are quickly sprayed into high-temperature and high-pressure air, and combustion produces energy. This process is caused by the movement of the piston. As the piston moves up, the diesel fuel is compressed and burned. The upward movement of the piston is driven by the crankshaft. The crankshaft is a shaft composed of many blades, which converts the linear motion of the piston into rotational motion to drive the operation of the vehicle or machinery. The combustion speed of diesel fuel is relatively slow, so it requires a high compression ratio and a higher temperature to achieve spontaneous combustion. This is a huge difference compared with the combustion rate of gasoline engines. The introduction of high-pressure common rails and fuel injectors enables diesel engines to inject accurate amounts of fuel in a shorter time and get better mixing in the cylinder, so that they have higher combustion efficiency and power output. In addition, the development of diesel engines also includes turbocharging and multi-valve technology.Turbocharging can make the engine generate more power at higher altitudes and lower oxygen pressure conditions, which is especially useful for machines such as ships and aircraft. Multi-valve technology can better control the intake and exhaust of the valve, further improving the performance of diesel engines. In a word, a diesel engine is an internal combustion engine that works in a compressed fuel. Its efficient combustion mode and sophisticated process design make it one of the most common engine types in the industrial and transportation industries. With the progress of science and technology and the change of application scenarios, diesel engines will continue to develop in the direction of higher performance and more environmental protection in the future to meet the needs of society for efficient, reliable and clean energy.

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