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Experimental investigation on research octane number of liquefied petroleum gas

Keçecioğlu, Ömer Tuğberk
This research presents an experimental study of the Research Octane Numbers (RON) of Liquefied Petroleum Gas (LPG) using a modified Cooperative Fuel Research Engine which can run with gaseous high-octane fuels. A comprehensive set of RON data for the LPG compositions that contain propane, n-butane, iso-butane and trace amount of olefins are presented. In order to determine RON of the various samples, the bracketing method that is defined for liquid fuels by the American Society for Testing and Materials (ASTM) was followed. A linear empirical model which correlates LPG composition to octane number is then developed. The empirical model is tested using experimental data in the literature in order to observe confidence. Very good agreement with the literature is observed.