What is the principle of a diesel engine?

[OEllie]

Diesel engines operate on the same basic principle as gasoline engines, with each working cycle also going through four strokes: intake, compression, power, and exhaust. However, since diesel fuel is used in diesel engines, which has higher viscosity than gasoline and is less prone to evaporation, and its auto-ignition temperature is lower than that of gasoline, the formation of the combustible mixture and the ignition method differ from those of gasoline engines. Here is some relevant information: 1. Advantages: Diesel engines are known for their high power and excellent fuel economy. The working process of a diesel engine shares many similarities with that of a gasoline engine, with each cycle also undergoing the four strokes of intake, compression, power, and exhaust. 2. Ignition method: Since diesel fuel is used in diesel engines, which has higher viscosity than gasoline and is less prone to evaporation, and its auto-ignition temperature is lower than that of gasoline, the formation of the combustible mixture and the ignition method differ from those of gasoline engines. The main difference is that the mixture in a diesel engine cylinder is ignited by compression rather than by spark.