Análisis del impacto de las características tribológicas del aceite sobre el consumo de combustible en un motor de ciclo OTTO evaluado sobre banco dinamométrico de motores marca Borghi y Saveri modelo FA 200 SP de la Facultad de Mecánica-ESPOCH

Abstract

This work focused on analyzing the impact of the tribological characteristics of the oil on fuel consumption in an Otto cycle engine evaluated on a dynamometer bench of Borghi & Saveri engines, model FA 200 SP of Mechanics School -ESPOCH. For the development of the tests, a matrix was established that combined oil brands: TOP 1- Golden Bear, viscosity grades of 10W30-20W50 and fuels: Extra 85 and Super 92 octane. In addition to the use of the gravimetric method to determine fuel consumption, the NTE INEN 2027 standard was applied together with Cat S.O.SSM Services for the extraction of samples for particle counting. The results obtained show that the lowest consumption value is 85.34 g/kWh with the combination Top 1-fuel Super-viscosity 10w30 at 3500 RPM and the highest consumption is 97.34 g/kWh with the combination Top 1-fuel Extra-viscosity 20w50 at 3000 RPM. There is a difference of 12,32% between the highest and lowest consumption. The particle count was carried out in a personalized way, since the necessary equipment for the adequate count is not available, obtaining that the number of particles in each oil is between 235 to 250 in each oil, presenting a maximum difference of 0,6%. Finally, according to the ANOVA statistical analysis, it was confirmed that the variables mentioned above do not influence fuel consumption and that the oils studied offer the same level of protection. So, it is recommended that the time for the tests be longer in order to evaluate if time influences the results and to have more particles in the samples to be studied.