Experimental Investigation of Physical and Tribological Properties of Engine Oil with Nano-particles Additives

Experimental Investigation of physical and tribological properties of engine oil was performed on SAE20W40 lubricant containing CuO and FeO nano-particles and their combination (content of metal 0.875 g/350 ml of oil). This presents an analysis of the variation in properties of lubricants by adding nano-particles and further enhancement in its operational quality. This work also presents a review of the addition of copper and iron metallic nanoparticles in engine oil and the evaluation of changes in their respective physical and tribological properties. Later analysis of the variation in tribological properties has been carried out by conducting tests on the bearing test apparatus. FFT (Fast Fourier Transform) and other operational parameters are used to analyse vibration characteristics for different samples of lubricants. Through comparative analysis, the use of the base oil (SAE20W40) with the mixture of CuO and FeO provides the most effective improvement of physical properties via viscosity, flash and fire point as well as vibration in tribological properties.