Do Diesel Vehicles Have Spark Plugs?

[DiJayla]

Diesel vehicles do not have spark plugs, whereas gasoline vehicles, regardless of whether they are fuel-injected, are equipped with spark plugs. Diesel engines draw air into the cylinders, and at the end of the compression stroke, the temperature inside the cylinder reaches 500 to 800 degrees Celsius. At this point, the fuel injector sprays diesel fuel into the combustion chamber under high pressure in a mist-like form, where it mixes vigorously with the hot air, evaporates, and forms a combustible mixture. The working process of a diesel engine shares many similarities with that of a gasoline engine, with each working cycle also going through the four strokes: intake, compression, power, and exhaust. The main differences between the working processes of diesel and gasoline engines are: the mixture in the cylinder of a diesel engine is ignited by compression rather than by a spark; during operation, a diesel engine draws air into the cylinder, and when the air in the cylinder is compressed to the end point, the temperature can reach 500 to 700 degrees, and the pressure can reach 40 to 50 atmospheres.