SKY'S QUEEN  COMMODITIES LLC                                                             – Suite 804 – 1220 N. Market Street- Wilmington, DE 19801-USA

Email: skysqueen@gmail.com

To make money is an art, to work is an art, a good transaction is the maximum of all the arts. (Andy Warhol)
 

Diesel or diesel fuel  is a specific fractional distillate of petroleum fuel oil used as fuel in a diesel engine invented by German engineer Rudolf Diesel in cooperation with MAN AG.

Petroleum diesel, or petrodiesel is produced from petroleum and is a hydrocarbon mixture, obtained in the fractional distillation of crude oil between 200 °C and 350 °C at atmospheric pressure.

The density of petroleum diesel is about 850 grams per litre whereas petrol (gasoline) has a density of about 720 g/L, about 15% less. When burnt, diesel typically releases about 40.9 megajoules (MJ) per litre, whereas gasoline releases 34.8 MJ/L, about 15% less. Diesel is generally simpler to refine from petroleum than gasoline. The cost of diesel traditionally rises during colder months as demand for heating oil, which is refined in much the same way, rises. Due to its higher level of pollutants, diesel must undergo additional filtration which contributes to a sometimes higher cost.

In the past, diesel fuel contained higher quantities of sulfur. European emission standards and preferential taxation have forced oil refineries to dramatically reduce the level of sulfur in diesel fuels.

High levels of sulfur in diesel are harmful for the environment because they prevent the use of catalytic diesel particulate filters to control diesel particulate emissions, as well as more advanced technologies, such as nitrogen oxide (NOx) adsorbers (still under development), to reduce emissions. However, the process for lowering sulfur also reduces the lubricity of the fuel, meaning that additives must be put into the fuel to help lubricate engines. Biodiesel and biodiesel/petrodiesel blends, with their higher lubricity levels, are increasingly being utilized as an alternative.

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Latest update: 23-11-08