One of the main problems in oil refining sector is production of gasolines with necessary physico-chemical and operational properties which should meet the requirements of Euro-3 and Euro -4 standards. This article contains physicochemical properties of three-componental models of gasolines on the basis of linear, symmetric, asymmetric nonstoichiometry models, and also on the basis of balance model. The offered models, which describe physico-chemical properties of gasolines, can be used in two ways. The first way of using this model is blending gasoline components. And the second way is analyzing of gasolines received from gasoline stations in order to check quality on conformity to Euro-3 and Euro -4 standards.
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