Experimental analysis of the combined effect of thermal barrier coating material and the nanoparticle augmented fuel usage on CI engine characteristics

Abstract

The scope of this work involves the utilization of optimal insulating material and nanoparticles in addition to diesel for enhancing the CI engine performance reduce harmful environmental emissions. The first phase of the research work focused on coating the combustion chamber components, including cylinder-liner as well as a piston with 150 and 100 μm thickness, correspondingly, with equivalent quantities of Yttria Stabilized Zirconia (YSZ) and Alumina (Al2O3) powder using the plasma spraying method. The second phase of experimental work oversees the augmentation of diesel fuel with 30 ppm and 60 ppm of Cerium Oxide (CeO2) nanoparticles independently. Initially, the effectiveness, as well as emissions criteria, were investigated using a thermal barrier coated (TBC) engine & neat diesel. The implications of CeO2 nanoparticles were then compared with the reference engine. Usage of the thermal barrier coated chamber reduced the specific fuel consumption (SFC) by 7.71 % and increased the brake thermal efficiency (BTE) by 1.75 %. Additionally, the SFC was reduced by 8.25 % and 13.19 %, and the BTE was enhanced by 2.43 % and 3.54 % in the TBC engine, which used 30 ppm and 60 ppm CeO2 mixed diesel fuel, respectively, when correlated with the reference engine. Besides, harmful pollutant gases of carbon monoxide (0.0707 % vol), hydrocarbon (37 ppm), and smoke (8.08 %) were minimized extensively by TBC coating material usage and the inclusion of nanoparticles in the fuel.