Effect Of Manganese-based Additives On Particulate Emission Characteristics Of GDI Vehicles

Cars bring convenience to modern people and improve people’s quality of life.However,when people use automobiles,the direct-injection gasoline of automobiles emits a large number of particulate matter and pollutants,which seriously deteriorates the living environment of human beings and threatens the life and health of organisms.In recent years,people from all walks of life began to realize the harm of automobile exhaust emissions,and constantly improve the physical and chemical properties of gasoline,forming increasingly stringent emission requirements.In this context,it is necessary to add gasoline additives.Various gasoline additives have been developed in the market.Different gasoline additives can improve the overall performance of gasoline from physical(such as viscosity,flash point,freezing point)and chemical(such as explosion resistance,oxidation)aspects,especially greatly optimize the emission quality.This paper focuses on the analysis of manganese based additives.The performance of the engine after adding this additive is analyzed.The main contents of this paper are as follows:(Ⅰ)The bench test scheme of gasoline additive engine is designed,and the combustion analysis system is established.The influence of manganese additive on the combustion of gasoline additive engine is analyzed theoretically.(Ⅱ)preparation of manganese based fuel additive.Based on the literature,the preparation methods of manganese compounds were summarized.The appropriate chemical reagents were selected to prepare manganese compounds additives by precipitation and extraction,and their combustion properties were preliminarily analyzed.(Ⅲ)gasoline combustion improver is tested.On the basis of adding 1 parts per thousand into 92 # and 95 # gasoline respectively,the emission,fuel consumption and cylinder pressure data are analyzed,and the labeling and its adaptability are studied in combination with emission characteristics,combustion characteristics and gasoline economy.(Ⅳ)The influence of 92# ethanol gasoline on engine fuel consumption and the influence of strong base on cylinder pressure and fuel economy of 92# ethanol gasoline are analyzed.Finally,the effect of ethanol gasoline is summarized and analyzed,and the effect of strong base on optimizing combustion and reducing fuel consumption is studied.(Ⅴ)The relationship between the combustion of gasoline engine and pure ethanol was studied.On this basis,the influence of strong base on the combustion data and emission of ethanol was studied by adding 1 parts per thousand base.