Influence of Biodiesel from Egyptian used Cooking Oils on Performance and Emissions of Diesel Engine

Due to diminishing petroleum reserves and the environmental negative effects of exhaust gases from diesel fueled engines, alternative fuels for diesel engines are becoming increasingly important. Egyptian waste cooking oils have special specifications because it is exposed to high temperatures during use for long hours. In the present experimental study, the performance and emissions of a four strokes, single cylinder, air cooled diesel engine fuelled with two different biodiesel from Egyptian used cooking oil (palm and sunflower) are evaluated at different speeds. The measured performance parameters include torque, fuel consumption and exhaust gas temperature. Brake power, brake specific fuel consumption and brake thermal efficiency was calculated using the measured test data. The emission parameters include carbon monoxide, particulate matter and the oxides of nitrogen. The tests have been carried out with different blends of B5 to B100 of biodiesel with diesel fuel. The results showed that the engine performance with the palm biodiesel blend B5 is closed to diesel fuel also, for B5 the reduction percent ranges of CO emission was from 53 to 70% while the reduction percent ranges of NOx emission was from 13 to 80% compared to diesel fuel.