ENHANCEMENT COMBUSTION AND IGNITION CHARACTERISTICS OF BIODIESEL/DIESEL FUEL MIXTURES BY NANO ALUMINIUM (N-AL) AND NANO ALUMINIUM OXIDE (N-AL2O3) ADDITIVES

The experimental investigation of combustion behavior and ignition process of Al and Al2O3 nanoparticles which are in stably suspension in mixture of fuel that which containing from oil fuel such as diesel and biodiesel (jatropha). The problems with diesel and biodiesel in combustion processes and ignition process are incomplete combustion, ignition delay and emissions etc. The aluminum (40nm) and aluminum oxide (30nm) additive nanoparticles size are added to the fuel mixture in order to enhance combustion and ignition performance. The volume fraction percentage of the nanoparticles additives are varies from 0.1% to 0.5%. In the current work, we illustrate the increase in heat of combustion and reduction of ignition delay. This experimental study shows the characteristics of fuel mixture with nanoparticles for active materials. The first step of this study is to prepare the fuel mixture from 50%diesel plus 50% biodiesel , n-Al and n- Al2O3 using the magnetic stirring ceaseless with heating. The second method is to prepare the fuel mixture by ultrasonic bath. This is used for the complete mixing of fuel and highly decreases the separation of fuel mixture, Aluminum and Aluminum oxide. From this investigation, it can be concluded that the aluminum and aluminum oxide nanoparticles act to increase the energy density and heat of combustion and reduce evaporation delay. Photographs taken by using scan electron microscope show the morphology of the state of additives and mixture agglomeration elements.