Análisis de emisiones contaminantes y consumo de combustible a diferentes proporciones y marcas de aceites lubricantes para motores de dos tiempos empleando gasolina extra y super

Abstract

The research goal is to obtain results that improve fuel consumption and exhaust emissions from a two-stroke engine. For which, three oil brands were defined and coded as A, B and C, also two types of fuels, extra and super gasoline. Each oil brand was mixed with the two gasoline qualities, also a formula was established to mix the gasoline with the oil in the proportion that each oil manufacturer defines and recommends, a procedure for mixing with normed materials was presented with the purpose of obtaining exact amounts, and six different types of mixtures. For the consumption tests, a protocol was defined in order to start the two-stroke engine at idle state with a different mixture for 20 minutes so determine the mixture consumed. From each test, five samples were taken. For the exhaust gas analysis, the free acceleration method of the INEN 2202 standard was applied, which allowed to observe the coloration and opacity of each mixture exhaust gases. The consumption results were analyzed with the ANOVA statistical test in MINITAB obtaining a p value (1.617E-20) <α (0.05) to accept the alternative hypothesis, supported by a qualitative analysis for the gas results. Both results were collated for their interpretation and it was concluded that the Extra fuel mixture with the Oil brand C (Motul) produces a significant change of lower fuel consumption, there is a color change and a reduction in exhaust gases opacity. In addition, there is a change in the behavior of the exhaust gases using super gasoline. The study and oils application for two-stroke engines created in Ecuador is recommended.