Study on the Greenhouse Gases Generated by the Direct Injection Diesel Engines Running on Biodiesel

The formation of CO₂ emissions is largely dependent on the carbon content of the fuel used in diesel engines and on the fuel consumption. The mixture of biodiesel in fossil fuels is in line with most of the research presented in the specialty literature, a method of reducing CO₂ emissions from diesel engines. Due to these controversies on the obtained results, the research of the biodiesel effects blended with fossil fuels is still a matter of study. Therefore, a laboratory study has been conducted on a naturally aspirated 4-stroke diesel engine, using different mixtures (10, 15, 20, 25, 30, 40 and 50%) of diesel with biodiesel produced from oil rape. The results of the study revealed the fact that CO₂ emissions of the blends used are lower than the same emissions produced when powering the engine with diesel fuel. Furthermore, of all blends used in the study, the 15% biodiesel mixture in diesel fuel was marked by a major decrease of CO₂ emissions and of specific fuel consumption.