"diesels" - 1 õppematerjal

Comparison of diesel and petrol engine

Gasoline does not self-ignite when compressed, because it does not generate enough heat. It needs activation energy to explode, and this energy is generated by a spark plug at the top of the cylinder. Diesel on the other hand, does not require a spark plug to ignite it because it generates enough heat when it is completely compressed to ignite itself and cause explosion. . Diesel engines have a much higher compression pressure than gasoline engines. The higher compression pressure in diesels explains the difference in the methods of ignition used in gasoline and diesel engines. Advantages and disadvantages of gasoline and diesel engines The question then is, which engine is "better". By better I mean more efficient, powerful, and faster. The efficiency of the diesel cycle is higher than the gasoline cycle because of higher compression ratio, and because the temperature of combustion in a diesel engine is much higher