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The microstructure of spark-ignition (SI) engine deposits produced from fuels with two commonly used gasoline additives, polyether amine and polybutene amine, were studied by gas adsorption technique and Raman spectroscopy. The lateral sizes of graphitic crystallites were found to increase upon addition of the additives. The surface areas of the deposits were evaluated using the BET and DR theories...
The structural characteristics of combustion engine deposits produced from fuels with 22–44% aromatics by volume have been studied using Raman spectroscopy and gas sorption techniques. The lateral sizes of graphitic crystallites were found to increase slightly with the aromatic content of the fuel used. The surface areas of the deposits were evaluated using the BET and DR theories. Density functional...
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