Evaluación de emisiones contaminantes de escape de motores de encendido provocado a través de ciclo estándar comparando dos cotas de combustible

Abstract

The present study aimed to analyze the exhaust gases of Mazda BT-50 vehicles (BT) and Suzuki S Cross (SC) between the Extra (EX) and. Ecopaís (EC) gasoline. Thus, it was obtained from the estimation of large samples from the determination of the vehicle fleet from Ecuador with MEP (Provoked Ignition Engines). The identification of pollutant emissions in concentrations was carried out by dynamometric tests. With the American cycle, IM 240 driver coupled to vehicle inspection and maintenance control (I/M) at 2800 masl in the city of Quito. In addition to tests on fuel consumption by calculations of emission factors such as carbon monoxide (CO), hydrocarbons (HC), and oxides of nitrogen (NOx) using the two fuels in both vehicles through the method of simplified combustion. Obtaining the values in grams per kilometer traveled. With the STATGRAPHICS analysis, it was obtained that the vehicles are the main significant statistically, followed by fuels and at the end the interaction of both variables. It concluded that the use of EC gasoline reduces the amount of CO emission by 4.3%, HC by 21.99%, and NOx at 18.4% in BT. In the case of SC, likewise, using biofuel decrease the number of harmful gases by 23.9% CO and 50% HC, but NOx increases 35.05% compared to the EX. In addition, the fuel economy was efficient with the EX gasoline, due to the increase in the percentage of ethanol in the fuel which reduced 3,7% its autonomy. It is recommended in this study of emissions to carry out with a larger sample and greater number of repetitions to corroborate the impact of the use of main sources of energy of the country.