Experimental investigation about the ceramic coating on diesel engine components is to evaluate its effective efficiency with respect to different loads. It is conducted on the Kirloskar single cylinder diesel engine; in addition, the engine performance, emission, and combustion have been analyzed by treating with the coated piston on the engine runs with diesel (D100) and biodiesel (B100). Yttria-stabilized zirconia is the ceramic agent coated on the piston with the help of plasma spray coating method. After the experimental results based on the comparison of coated and uncoated piston, it shows that the coated piston performed very effectively with increased brake thermal efficiency, decreased specific fuel consumption at all applied spectrum of loads. The emission is also evaluated with special equipment for testing and it shows that the hydrocarbon and carbon monoxide are some major pollutants tend to reduce in the coated piston than the uncoated piston. But there is an increase in nitrogen monoxide where it is controlled by varying injection timing and pressure with advanced fuel injectors according to the survey. Other benefits of this thermal barrier coating are that thermal fatigue faced by the surface of the components can be reduced to a greater level. The combustion has high heat release rate and pressure due to the complete heat within the insulated chamber without any conduction through the surface of the surrounded components.
Keywords: Diesel engine; Performance characterizations; Thermal barrier coating; Yittria-stabilized zirconia.