Impact of yttria stabilized zirconia coating on diesel engine performance and emission characteristics fuelled by lemon
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Impact of yttria stabilized zirconia coating on diesel engine performance and emission characteristics fuelled by lemon grass oil biofuel Karthickeyan Viswanathan1 · Shuang Wang1 · Sivakumar Esakkimuthu1 Received: 4 March 2019 / Accepted: 14 October 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract The aim of present work is to improve the efficiency and reduce the harmful exhaust emissions from diesel engines. Neat lemongrass oil was selected as a biofuel, and its physical and chemical properties based on ASTM standards were investigated. The combustion unit was coated with yttria-stabilized zirconia as a ceramic layering material. The initiative behind the thermal barrier coating was to acquire reduced heat losses by ceramic layering the combustion unit with the substance having reduced thermal conductivity, so as to aid in the transformation of accrued heat transformation into constructive work. Conventional diesel fuel was taken as a baseline fuel and investigated in the uncoated engine. Then, the coated combustion unit was installed in the engine and investigated with diesel. Subsequently, lemongrass biofuel was used as operating energy in both coated and normal conditions. Ceramic-layered conditions exhibited high engine efficiency with reduced fuel utilization. The result showed that the coated engine exhibited reduced emissions like smoke, HC and CO with the exception of NOx compared to normal engine. This variation was observed owing to trapping of energy inside the combustion unit and low level of energy transferred to the combustion chamber walls. Graphical abstract Uncoated combustion chamber components DI diesel engine Emission (CO, HC, NOx and smoke)
Performance (BTE and BSFC)
Coated combustion chamber components
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Keywords Lemongrass oil biofuel · Thermal barrier coating · Yttria-stabilized zirconia · Performance and emission Abbreviations FTIR Fourier transform infrared spectroscopy LHR Low heat rejection LGO Lemongrass biofuel (100% in volume) Diesel Diesel (100% in volume) BTE Brake thermal efficiency GC–MS Gas chromatography–mass spectrometry YSZ Yttria-stabilized zirconia BC Before coating NOx Oxides of nitrogen AC After coating CO Carbon monoxide ASTM American society for testing and materials TBC Thermal barrier coating DI Direct injection HC Hydrocarbon Ppm Parts per million BSFC Brake-specific fuel consumption
Introduction Due to better efficiency, stability, reliability and minimum fuel price, compression ignition engines were appropriate for heavy-weight applications like agriculture, industry and transportation [1–4]. Regardless of the advantages, diesel engines experienced the difficulty of production of emissions like oxides of sulphur, smoke and oxides of nitrogen [5, 6]. Such inherent limitations as well as the human population explosions, substantial use of transportation vehicles and industrialization have prompted to find an alternative
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