Optimization of the Effect of Low Heat Rejection Diesel Engine Using Biodiesel with Taguchi Method 2022-28-0577

The current study focus on the effect of thermal barrier coated (TBC) piston on diesel engine and also the emission characteristics. The test engine piston was coated with a Ni-Cr-Al-Y bond coat of 50 μm thick and a top coat of 250 μm thick with a mixture of 93% of ZrO₂, 3 % of Y₂O₃, 2 % of Gd₂O₃ and 2% Nd₂O₃ which is coated onto the target surface by following the plasma spray technique. The experimentation will be conducted in a 4-stroke 1-cylinder diesel engine using diesel, Mahua (MB 100) and Jatropha (JB 100) fuels with and without coating. As a result of this investigation, it was found that a coated engine’s brake thermal efficiency (BTE) had increased by 2.8% when compared to the baseline engine and the brake specific fuel consumption (BSFC) has been reduced by 3.2 % with a coated piston when compared to the baseline piston when JB 100 was used as a fuel. In coated engines, the hydrocarbon (HC) and carbon monoxide (CO) emissions got reduced by 7% and 6.5% the oxide of nitrogen (NOx) emission was increased by 12% compared to the baseline engine. The Taguchi approach was used to estimate the appropriate factor ratios in terms of performance and emission characteristics.