Determinación de la eficiencia de mezcla de gasolina de ochenta octanos con etanol anhidro para su utilización en motores de combustión interna de cuatro tiempos encendido por chispa.

Abstract

Properties of the anhydro ethanol mixtures with eighty- octane gasoline in 5%, 10%, 15% and 20% proportion were determined carrying out tests to determine whether they can be used in four-time and spark-started internal combustion motors. The work was carried out into two parts; the first one contains the technical basic of combustion, fuels and general points of spark started internal combustion motor functioning; the second one contains the elaboration of the mixtures at 5, 10, 15, and 20% anhydro-ethanol mixed with eighty-octane gasoline which were used to perform specific trials to determine their features, tests which were conducted at the Clean Product Terminal Riobamba. With the obtained data from the trials of reid vapor pressure, copper sheet, distillation, octane index it was possible to determine that the eighty-octane gasoline with anhydroethanol at 10% mixture is the one which presents the best efficiency as it improves the anti-detonation properties of the fuel without significantly changing the rest of properties, moreover, it presents the feature of a good starting in cold, acceptable reid vapor pressure, impeding the fuel evaporation, a low corrosion to the copper sheet, with an 84-octane index; this is why it is established that this is the mixture which best adapts to the functioning conditions in internal combustion motors in our environment.