An evolving research agenda of merit function calculations for new gasoline compositions

Gasoline engines have an even greater potential for optimization. New fuels composition should be corresponded with modern engine technologies requirements. One of these requirements is introducing merit function to assess the advantages of innovative motor gasoline formulations, regarding their anticipated influence on performance for future engines. This paper addresses producing new recipes of environmentally friendly high octane gasoline fuel grades RONs 92 and 95. In addition, preliminary mathematical digital model for evaluating a comprehensive merit function of automotive gasoline for newly proposed fuel motor compositions was developed to maximize gasoline performance and decrease emissions when operating gasoline engines at various conditions. Physical and chemical characteristics of these innovative gasoline recipes were investigated in accordance with standard test methods regulations. The vast expertise of this laboratory work has obviously reported that fuel compositions samples contained the following concentrations by weight percentage, i.e., light condensate naphtha – 46–56, isopentane fraction – up to 4, aromatic components – up to 20, MTBE –14–15, isoolefins hydrocarbons – 15–16, and isooctane – up to 20. The key hypothesis of the merit function was improved gasoline efficiency and reduce exhaust emissions when operating gasoline engines at various conditions. The results reported that calculated values obtained for developed compositions turned out to be slightly higher than for baseline gasolines. These mean that the proposed gasoline composition was more efficient when operating gasoline engine at this condition. © 2022 Elsevier Ltd