dieselöljyn

Dieselöljyn, commonly known as diesel fuel, is a liquid fuel derived from crude oil. It is primarily used in internal combustion engines, specifically diesel engines. These engines operate on the principle of compression ignition, where the fuel is ignited by the heat generated from compressing air within the cylinder.

Diesel fuel is composed of a complex mixture of hydrocarbons, with carbon chains typically ranging from 12 to 20 atoms. Its properties, such as cetane number and viscosity, are critical for engine performance and emissions. The cetane number indicates the fuel's ignition quality, with higher numbers signifying easier ignition.

The production of diesel oil involves fractional distillation of crude oil, followed by further refining processes to remove impurities and adjust its characteristics. It is distinct from gasoline, which is used in spark-ignition engines and has a different chemical composition and combustion properties.

Diesel engines are known for their fuel efficiency and torque, making diesel fuel a popular choice for trucks, buses, trains, ships, and some passenger vehicles. However, diesel emissions, particularly particulate matter and nitrogen oxides, have been a focus of environmental regulations, leading to the development of cleaner diesel technologies and fuel formulations.