• Prof. Swapnil A. Pande,
• Prof. Abhijeet A. Shahade
• Prof. Parvez F. Agwan

Energy conservation and efficiency have always been the quest of engineers concerned with internal combustion engines. Even the petrol engine rejects about two-thirds of the heat energy of the fuel, one-third to the coolant and one-third to the exhaust, leaving only about one-third as useful power output. The thermal efficiency of most commercially used engines ranges from 38% to 42%, as nearly 58% to 62% of energy is lost in the form of waste heat. To save energy the hot parts are insulated. This will lead to a reduction in heat transfer through the engine, involving an increased efficiency. Change in the combustion process due to insulation also affects emissions. In this study, an attempt is made to reduce the intensity of thermal and structural stresses by using a layer of ceramic material. An experimental investigation is carried out under different loading conditions on a single-cylinder two-stroke spark-ignition engine with its piston crown coated with Nickel-Chromium & Al2O3 to understand the influence of thermal barrier coating (TBC) on performance characteristics. Al2O3 is chosen as a candidate material for coating the piston crown because of its desirable physical properties like low thermal conductivity, high coefficient of thermal expansion, high thermal resistance, chemical inertness, high resistance to erosion, corrosion, and high strength. The thermal barrier coating (TBC) is done by using Plasma Spraying Technique. The engine working conditions are maintained constant before and after coating. Experimental results revealed that the thermal efficiency is increased by 13.75%, Mass of fuel consumption is reduced by 6.02%, and brake specific fuel consumption is reduced by 9.84% between the coated and bare engine.

Thermal Barrier Coating using Plasma Spraying Technique, piston coatings, Two-Stroke SI engines,

"Analysis, Performance And Affect Of Aluminium Piston/Dynamo Coating On Inward Combustion Of Two Stroke S.I Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 4, page no.1-8, April-2021, Available :http://www.jetir.org/papers/JETIR2104101.pdf

"Analysis, Performance And Affect Of Aluminium Piston/Dynamo Coating On Inward Combustion Of Two Stroke S.I Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 4, page no. pp1-8, April-2021, Available at : http://www.jetir.org/papers/JETIR2104101.pdf