Diesel fuel is derived from crude oil. It is a mixture of hydrogen and carbon molecules. It is developed for engines that provide energy for power, flow readily in cold temperature, provide low emission, provide good fuel economy, and allow easy start-up. Power generators are run by diesel fuel. The fuel also runs diesel-powered vehicles, such as ships, buses, or trucks. Diesel engines of these types of vehicles are internal combustion engines.
Diesel is used in a high-compression engine. Air is compressed until it is heated above the autoignition temperature of diesel. Then the fuel is injected as a high pressure spray. There is no ignition source. As a result, diesel is required to have a high flash point and a low autoignition temperature. The flash-point of a fuel is the lowest temperature at which it can form an ignitable mix with air. The high flash point in diesel fuel means that it does not burn as easily as gasoline, which is a safety factor. Too low of a flash point is a fire hazard because ignition may continue and lead to explosion.
Autoignition temperature is the temperature at which a substance can be brought to flames without any sort of external force, such as a flame or spark. There are three different types of diesel fuel. These are Diesel No. 1, Diesel No. 2, and Diesel No. 4. The ignition temperature of Diesel fuel No.1 ranges from 450 to 602 Kelvin, Diesel fuel No. 2 ranges from 527 to 558 Kelvin, and Diesel fuel No .4 is 536 Kelvin.
Diesel is a petroleum-based fuel with a high energy content - helping diesel go further per gallon than most other
Refiners reduced the sulfur content in diesel fuel by 97 percent. This new, ultra-clean fuel is important because sulfur tends to hamper exhaust-control devices in diesel engines, like lead once impeded the catalytic converters on gasoline cars. Just as taking the lead out of gasoline in the 1970s enabled a new generation of emissions control technologies that have made gasoline vehicles over 95 percent cleaner, so will removing the sulfur from diesel help usher in a new generation of clean diesel technology.
Physio-chemical properties of diesel fuel
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