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TECHNOLOGIES OF PREVENTION OF LOSSES (EMISSIONS) OF HYDROCARBONS FROM FUEL TANKS OF VEHICLES

This article is devoted to a comprehensive analysis of existing technologies and methods to prevent hydrocarbon losses from fuel tanks, taking into account the study of the advantages and disadvantages of these technologies that affect the effectiveness of emission prevention. The aim of the work is to identify the best technologies, systems, trends, features of capture and prevention of hydrocarbon losses from fuel tanks. The main causes of fuel losses from car fuel tanks are considered. Losses of hydrocarbons from fuel tanks due to large and small "breaths" are described. The physical properties of gasoline that characterize its evaporation and evaporation ability are described. The largest sources of emissions in the form of evaporation from vehicles are listed. Three separate mechanisms related to losses through the breathing valve of the fuel tank and fuel leakage are considered. Qualitative characteristics of the fuel-air mixture that evaporates from car tanks and emissions of pollutants during refueling of car fuel tanks are given. The causes, sources, consequences of fuel losses from car fuel tanks are considered and summarized in the figure. Also, the modern means of capturing hydrocarbon vapor from the fuel tanks of cars, which are relevant today, are summarized in the table. Based on a comprehensive situational analysis of current technologies and methods to prevent loss of hydrocarbons from fuel tanks, taking into account the study of the advantages and disadvantages of these technologies, we have identified the best technologies to prevent losses from large and small breaths. KEY WORDS: FUEL TANKS, PETROL, LOSSES, EMISSIONS, ANALYSIS, LOSS PREVENTION TECHNOLOGIES.