Emissions of Pollutant Gases (CO and CO<sub>2</sub> ) when Using Fuel Mixtures (Ethanol-Petrol) in Internal Combustion Engines

Abstract

The objective of the study is to evaluate the emissions of pollutant gases (CO and CO2) when using fuel mixtures (ethanol-petrol) in internal combustion engines. The experiments were carried out in the Engine Laboratory of the Faculty of Engineering Sciences of Agrarian University of Havana (AUH) using JACTO engine. To obtain the amount of toxic gases emitted into the atmosphere (CO2 and CO), the balance of the combustion equations was proposed for the different mixtures estimated taking into account the established coefficients of excess air. The analysis of the combustion process based on 10, 20 and 30 percent ethanol mixtures with hydration (80%; 85%; 90 %; 95%) and conventional petrol of category B-85 for rich mixtures (α = 0,85) and for lean mixtures (α = 1,15) showed that CO2 and CO emissions to the atmosphere are reduced to 17% for considered mixtures as compared to petrol. Despite higher relative fuel consumption as compared to petrol, there is a significant positive environmental effect.