Efecto del bioetanol y metanol mezclado con gasolina en las prestaciones de un MEP

This research study analyzes the impact of methanol and bioethanol as oxygenated additives in gasoline used in a spark-ignition engine. The purpose of the study is to evaluate the effect of these blends on pollutant emissions and engine performance, aiming to identify sustainable alternatives to fossil fuels. To achieve this, a literature review was conducted using a search script, selecting the blends that showed the best results in previous studies. The search indicated that E15 and M10 demonstrated outstanding results, so these blends were tested on a dynamometric bench, applying the FTP-75 "Bag 1" driving cycle and performing power and torque tests. The results indicated that E15 reduced CO by 0.717 %Vol, HC by 16.382 ppm, and fuel consumption by 0.063 L/h, but also decreased power by 0.599 kW and torque by 1.858 Nm. Additionally, CO2 concentration increased by 0.253 %Vol and O2 by 0.181 %Vol. On the other hand, M10 achieved a CO reduction of 1.037 %Vol and HC reduction of 13.683 ppm, but increased fuel consumption by 0.224 L/h, CO2 concentration by 0.632 %Vol, and decreased torque by 3.342 Nm. In conclusion, both blens demonstrated improvements in pollutant reduction, although with different impacts on fuel consumption and engine performance. E15 appears to be a more balanced option in terms of emissions and efficiency, while M10 stands out for its greater CO reduction but with a higher impact on fuel consumption and torque delivery.

• Main Author: Torres Toledo, Wladimir Ramón (author)
• Format: bachelorThesis
• Language: spa
• Published: 2025
• Subjects: BIOETANOL; COMBUSTIBLES ALTERNATIVOS; EMISIONES
• Online Access: https://dspace.unl.edu.ec/jspui/handle/123456789/32503