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在汽车的燃油配剂过程中,一个重要而又往往被忽视的环节是燃油本身.汽油是多种烃的复杂混合物,而每一种烃又具有其本身的物理及化学性质.这种复杂混合物的组成成份又随原油产地、商品名称、精炼厂、年份和销售地点而异.每种成份的性质、也即混合物的性质又随温度而变化.此外,混合物中低蒸馏点成份要比高蒸馏点成份汽化得快.这就使得汽相中低蒸馏点成份(轻成份)的百分比要比液相中为高.
One of the most important and often overlooked aspects of the vehicle’s fuel formulation is the fuel itself, a complex mixture of hydrocarbons, each of which has its own physical and chemical properties.This complex mixture The composition of which varies according to the origin of the crude oil, the name of the commodity, the refinery, the year and the place of sale.The nature of each ingredient, that is, the nature of the mixture, also varies with temperature and, in addition, The vaporization of the point component is faster, which results in a higher percentage of light vapor fraction (light component) in the vapor phase than in the liquid phase.