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Now days a major problem of pollutions are due to exhaust emission of vehicles. With an increase in population and living standard, the transport vehicles as well as car population is increasing day by day. In addition to this there is steep increase in the number of two wheelers during the last two decades. All these are increasing exhaust pollution and affect the health of living beings, causing ozone layer depletion, greenhouse effect. The desire to reach higher efficiencies, lower specific fuel consumption and reduced emissions in modern engines has become the primary focus of engine researches and manufacturers over the past three decades. Ceramic coating is a solution to such problems as they provide good thermal barrier properties for designers. In the design of adiabatic engines, reducing in-cylinder heat rejection requires very special thermal barrier coatings on the engine combustion chamber. This study present the effect of coating on top of the piston on performance of three cylinder four stroke petrol engine and emission characteristics of exhaust gas. In this study Yttria Stabilized Zirconia (YSZ) is used as the thermal barrier coating material on the top of the piston crown by the plasma spraying process. Keywords—: Piston crown YSZ coating, TBC Engine, engine performance and emission;

Effect of Piston Crown Thermal Barrier Coating on Performance and Emission Characteristics in Petrol Engine