Estudo dos efeitos operacionais de biodieseis de segunda geração

Abstract

The effects of the addition of biodiesel produced from soybean oil, castor oil and bovine tallow on the performance and pollutant emissions of a turbo-fed diesel engine were measured in dynamometric tests under steady state conditions. The impact on variability and combustion dynamics was determined by applying a heat release analysis technique. Blends of 10% and 20% by volume of biodiesel added to mineral diesel oil were used. The results indicate that adding biodiesel causes an increase in the engine's performance indicators and in NOx emissions, as well as a decrease in other pollutant emissions. The use of EGR considerably reduced the NOx emissions. Deviating results obtained with castor oil biodiesel are attributed to an increase in fuel jet penetration due to its inferior atomization characteristics.