Investigation of Combustion and Emission Characteristics of a Diesel Engine with Oxygenated Fuels and Thermal Barrier Coating

Abstract

The purpose of the present study is to investigate the influence of fuel additives [2-methoxyethyl acetate (MEA)] plus thermal barrier coating (TBC) on diesel engine performance, combustion, and emission characteristics. A plasma spray coating (PSC) technique was used to coat the cylinder head, valves, and piston crown with ZrO 2 /Al 2 O 3 of about 150:150 µm. The additives are in the ratio between 0.5 and 2.0%, with 0.5% intervals. They were added to neat diesel fuel, by volume, respectively. In general, the ceramic coating as a thermal barrier improves the efficiency by reducing energy losses. The experiment was conducted in a singlecylinder water-cooled direct-injection (DI) diesel engine. The engine was run at a constant speed of 1500 rpm and fixed injection pressure of 200 bar. In the first phase, engine components were coated with ZrO 2 /Al 2 O 3 by using the PSC techniques and thickness of 150 µm each. In the second phase, experiments were carried out in the thermal-barrier-coated engine by using various blends of fuel additives (MEA). The experiments were conducted at various loads, such as 25, 50, and 75% and maximum load, and the results were compared. The effect of TBC decreased the NO x emission, and the performance profile was found improved. The experimental results show that the combined effect of TBC and fuel additive changes the performance and simultaneously reduces the NO x emission. NO x emission was reduced by 40% in the thermal-barrier-coated engine, and it was further reduced by 10% in the fuel additive plus thermal-barrier-coated engine.

Liquid Density of 2-Methoxyethyl Acetate, 2-Ethylhexyl Acetate, and Diethyl Succinate at Temperatures from 283.15 K to 363.15 K and Pressures up to 100 MPa

“…Gong et al 2 found that diesel engine fueled with 2-methoxyethyl acetate can reduce smoke, HC, CO, and NOx emissions. Ramu et al 3 have studied the influence of fuel additives (2-methoxyethyl acetate) plus thermal barrier coating (TBC) on diesel engine performance, combustion, and emission characteristics. Their results showed that NOx emission was further reduced by 10 % in the fuel additive plus thermal-barrier-coated engine.…”

Sulfated Well-Defined Mesoporous Nanostructured Zirconia for Levulinic Acid Esterification

“…This material has been widely studied because of its unique properties such as hardness, chemical stability, refraction, and ionic conductivity . These distinctive properties make zirconia a good choice for a wide range of applications, such as solid fuel cells, ceramics, thermal barrier coating materials, catalysts, pigments, and luminescent materials or sensors when doped by rare earth elements. − These applications depend not only on the structural properties and crystallinity, particle size, and morphologies of zirconia but also on its porosity . Zirconia has been synthesized by various methods such as sol–gel process, − coprecipitation , hydrothermal or solvothermal synthesis, − pulsed plasma technique, aerosol pyrolysis, , and more recently, sustainable methods such as gelation of alginate, precipitation by hydroxypropyl-β-cyclodextrin, use of lysozyme, which is a cationic antibacterial enzyme, and use of Fusarium oxysporum , which is a species of plant parasitic fungus .…”

Tunable Structure of Zirconia Nanoparticles by Biopolymer Gelation: Design, Synthesis and Characterization

“…Zirconia nanoparticles (NPs) exhibit several interesting properties,1–3 which results in them being useful in many fields of technology such as solid fuel cells,4 ceramics,5 thermal barrier coating materials,6 catalysts,7,8 and pigments 9. Several methods have been developed to synthesize zirconia nanoparticles, which include the sol–gel process,10 precipitation,11 hydrothermal,12 and pulsed plasma technique 13.…”