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| According to the physical and chemical properties and storage conditions on board vehicles for alternative motor fuels can be divided into three groups. 1. Petroleum-based fuel additives are not petroleum in the form of oxygenated compounds (alcohols and esters, water-fuel emulsions), and performance characteristics are similar to petroleum fuels. 2. Synthetic (artificial) liquid fuel, identical (or similar) on the properties of conventional oil fuels and resulting from the processing liquid, gaseous or solid materials. This group may include gasoline, jet, diesel and gas turbine fuels produced from natural bitumen, coal, shale oil, gasoline and fuel obtained by direct synthesis from CO and H2. 3. Fuel oil is not substantially different from physical, chemical and performance properties, and (in some cases) the state of aggregation of the traditional ones. This group may include alcohol fuel used in its pure form (methanol, ethanol and their mixtures with higher alcohols) as well as gaseous fuels - compressed natural (CNG) gas, natural liquefied gas, liquefied petroleum gas (LPG) ammonia, hydrogen, generator and other man-made gases. In a separate group of non-oil supplements produce origin - alcohol, natural gas, hydrogen, and others - with an autonomous, separate from the main supply of fuel oil into the engine. Fuel efficiency in such systems is determined, along with the cost of fuels, technical and economic performance of the transport process and the cost of additional equipment power plant. |
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