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marine diesel oil
''Marine Diesel Oil (MDO)'' is a type of fuel oil and is a blend of gasoil and heavy fuel oil, with less gasoil than intermediate fuel oil used in the maritime field. Marine Diesel Oil is also called "Distillate Marine Diesel". MDO is widely used by medium speed and medium/high speed marine diesel engines. It is also used in the larger slow speed and medium speed propulsion engine which normally burn residual fuel.〔 Those fuels resulting from a catalytic cracking/visbreaking refinery.〔 Marine diesel oil has been condemned for its nimiety of sulfur, so many countries and organizations established regulations and laws on MDO use. Due to its lower price compared to more refined fuel, MDO is favored particularly by shipping industry.
==Specification==
ISO 8217 of the International Standards Organization (ISO) is the primary standard of MDO. 〔
Marine fuels range in viscosity from less than one centistoke (see viscosity) (cSt) to about 700 cSt at 50°C (122°F).〔 (1 cSt = 1 mm2/s.) And higher viscosity grades are preheated during use to bring their viscosity into the range suitable for fuel injection (8 to 27 cSt). 〔 But MDO does not need to be preheated before using. According to Chevron, MDO has a sulfur limit varies from 1 to 4.5 percent by mass for different grades and Sulfur Emission Control Areas (SECAs). 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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