The Effect of Using a Mixture of Gasoline and Food-Grade Bioethanol on Motorcycle Exhaust Gas-Emissions
DOI:
https://doi.org/10.70822/evrmata.vi.112Abstract
This study evaluates the impact of bioethanol blends on the exhaust gas emissions of a 150cc gasoline engine, specifically focusing on carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2), and unburned hydrocarbons (HC). A mixture of 92-octane gasoline and 13%, 15%, and 17% food-grade bioethanol was tested under variable engine speeds from 1250 to 9000 rpm. The direct mixing and dilution methods were used to prepare the fuel blends. Exhaust gas emissions were measured using full throttle opening, in accordance with ISO 1585 test standards. Analysis of variance (ANOVA) was applied to compare the emission levels. The results indicate that the bioethanol blends significantly reduced CO emissions by 12%, CO2 by 1%, HC by 15%, and O2 by 15% at 1250 rpm compared to the baseline 92-octane gasoline. These findings suggest that moderate bioethanol blending is an effective, environmentally-friendly strategy for reducing emissions in gasoline engines.
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