Diesel engine is an internal combustion engine using diesel as fuel. Diesel engine belongs to compression ignition engine, which is often called diesel engine in the name of main invention * diesel engine. When the diesel engine is working, the air in the cylinder of the diesel engine is compressed to a high degree due to the movement of the piston, reaching a high temperature of 500 ~ 700 ℃. Then, the fuel is sprayed into the high temperature air in a mist shape, and mixed with the high temperature air to form a combustible mixture, which will ignite automatically. The energy released in combustion acts on the top surface of the piston, pushes the piston and converts it into rotating mechanical work through the connecting rod and crankshaft.

What machinery is the diesel engine mainly composed of?

System structure diagram of diesel fuel internal components, power transmission components, body and main bearings, valves, fuel system and governor, lubrication system, cooling system, starting system, internal combustion engine. Diesel fuel self ignition is characterized by low temperature. Therefore, no diesel, spark plugs, ignition devices, compressed air are used to raise the air temperature, diesel oxidation tests the temperature of the air, then the diesel spray self ignited air mixture is injected into the combustion.

The diesel pump will be sent to the filter for pumping (to ensure sufficient fuel and maintain a certain pressure. The fuel supply quantity of the fuel transfer pump is much larger than that of the fuel injection pump. The excess diesel will return to the fuel tank through the low pressure pipe, and other diesel will be compressed to high pressure by the fuel injection pump.) Compression ignition cylinder directly into the combustion chamber（ The schematic diagram shows the fuel supply system of diesel engine. The red pipeline is the high-pressure pipeline, the brown pipeline is the low-pressure pipeline, and the purple pipeline is the return pipeline).