Estudio del efecto de octanaje sobre el desempeño y emisiones del motor de combustión interna

Abstract

This research was carried out on a 1,6 liter internal combustion engine at 2700 masl where the effect of fuel octane on performance and emissions was evaluated; therefore, 85, 89 and 95 octane gasolines were used. The study employs an experimental, hypothetical-deductive and quantitative method, based on data collection over time. The results showed that, in general, there were non-significant differences between the three gasolines in terms of performance, power and torque increased slightly with octane rating, but the differences were approximately 1 HP and 1 Nm, respectively. The values of pollutant gas emissions, such as CO, HC and NOx, were similar regardless of the octane level. Thus, the super 95 RON gasoline caused a higher production of the analyzed elements with 50% load applied; on the other hand, the 89 RON Eco-plus gasoline, which has a percentage of ethanol in its composition, presented an engine behavior with a high pollution degree with 100% load applied on the dynamometer. Fuel consumption was also similar in general terms; however, it is worth noting that the 85 RON extra gasoline had the lowest fuel consumption with minimal differences. In the case of specific fuel efficiency. The ANOVA statistical model did not find a significant difference between the three groups with a confidence level of 95% and a significance level of 5%. However, it is important to keep in mind that these results are based on tests performed on a specific engine and in punctual test conditions is well as the results may vary in other engines, depending on engine configuration, analysis conditions and other factors.