Abstract
Keywords: biodiesel, exhaust emissions
The transport sector is one of the most energy consumer, and one of the significant producers of the CO2 and pollutant emissions. Transport sector accounts more than 30% of total energy consumption. Global demand for fuels has increased steadily by around one per cent a year for the past five years. The most important primary energy source is crude oil (37%). Currently practically 97% of transportation fuels are produced from crude oil. The explosive growth in price of crude oil, limited sources and negative effect on environment by pollution and greenhouse effect has imposed increasingly use alternative sources globally. Alternative fuels offer the potential to stretch the resources of conventional fossil fuels, and the chance that we leave the mineral oil before it leaves us. Alternative fuels, first of all biofuels from lignocellulosic biomass are a chance for developing countries, as well as for Serbia, which have their economies based on agriculture, but suffer from low agricultural product prices, and unstable agricultural systems. From this aspect paper deal width the effect of biodiesel and mineral diesel blends on diesel exhaust emissions.