Abstract
Swiftly developing industrialization, growing population, environmental threat, energy demands, have directed research towards alternative fuels. This experimental investigation aims to determine the temperature distributions by coating on piston crown to analyze the effect of higher blends (B30 & B40) of Cashew nut shell oil (CNSO) diesel blends and studied the combustion behavior. The thickness of the coating layer on the piston crown of the test engine are 500 ìm. Prior to coating, the surface of the crown area was grinded upto 500 μm so that the compression ratio of the existing engine continue to be the same. Then the mentioned parts were coated with 150 μm NiCrAl as a bond coat and thereafter same parts were coated with 85% of ZrO2 and 15% Magnesium of 350 μm by plasma spray method. In this experimental work, single-cylinder 4- stroke compression ignition engine are used. The influence of coating thickness and distribution of temperature was investigated using the finite element method. Effect of combustion analysis, performance and emissions parameter are evaluated on the coated piston and compared with the uncoated piston. It was observed that BTE improved and CO, HC and smoke emission reduced significantly at maximum load, with increased NOX emissions.
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