Experimental investigation the effect of Mn2O3 nanoparticle on the performance and emission of SI gasoline fueled with mixture of ethanol and gasoline

The present study deals with application of ethanol and manganese oxide nano-particle at different ratios to gasoline-fueled SI EF7 engine. The blends are prepared in three emulsions namely gasoline-10%ethanol, gasoline-10%ethanol-10ppmMn(2)O(3), and gasoline-10%ethanol-10ppmMn(2)O(3). In order to prevent the amalgamation of nanoparticles and sedimentation during the test, the ultrasonic cleaner device is utilized to ensure the homogeneity of the composition. To measure the engine power, a 190 kW eddy current dynamometer is coupled and for determination of engine out exhaust gas, AVL gas analyzer is used. The results indicate that ethanol addition by 10% lead to 2.6% increase in brake power (BP), but interestingly 10 ppm Mn2O3 nano-additive raise the BP to 14.38% and 20 ppm nano-additive led to 19.56% increase of BP. With regard to emissions, ethanol presence in the blend reduces CO and UHC and raises the NOx and CO2 because the abundant oxygen bonds in ethanol help oxidation process. The best blend in terms of UHC and BSFC reduction is gasoline-10%ethanol-20ppmMn(2)O(3). The results also revealed that the peak of CO and UHC occurs at 75 N.m since at 75 N.m the inlet valve is actuated and the excess air is inducted to cylinder.