Browsing by Author "Okediji, Adebunmi Peter"

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    DEVELOPMENT OF AN INDIGENOUSLY MADE DIESEL INJECTOR TESTER
    (World Journal of Engineering Research and Technology WJERT, 2019-09-20) Alabi, Ismaila Olanrewaju; Okediji, Adebunmi Peter; Owoo, Ezedeen Ademola; Nwachukwu, Gerald Chimaobi
    This work entails the design and construction of a diesel injector tester for proper spray pattern, leakages and pressure inspection. The mechanism is important as the injection system requires greater manufacturing precision and tight tolerance for the system to function efficiently. A diesel injector tester was designed with CREO Parametric CAD software after which the real hardware prototype was developed. The machine was tested and its performance was evaluated through the spray, pressure and leakage tests, respectively, as it worked perfectly. Conclusively, the machine was successfully completed having a unique ability of being modified as it can be utilized in any automobile workshop for proper diagnosis. Necessary recommendations were later made.
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    Parametric and Quantitative Analysis on the Development of Shell and Tube Heat Exchanger
    (International Journal of Advanced Engineering, Management and Science (IJAEMS), 2018-06) Adesina, Olaiya Kamorudeen; Olanrewaju, Alabi Ismaila; Okediji, Adebunmi Peter; Iyiola, Alonge Oluwasanmi
    The importance of mini shell and tube heat exchangers (STHEs) in industrial and other engineering applications cannot be underestimated. Hence, based on the problems associated with the design of STHEs, a mini STHE was developed for transfer of heat between two fluids without mixing on the laboratory scale using locally available materials and technology based on an optimized LMTD technique. The performance of the heat exchanger was assessed and evaluated to determine the optimum combination of design parameters. Copper was utilized for the tube side fluid due to its higher thermal conductivity and anti-microbial property, while galvanized steel was used for the shell side fluid due to its cost and corrosion resistance. Parametric studies were carried out on STHE design parameters to obtain an optimal design for efficiency and effectiveness after relevant design considerations. Experimental results were validated with quantitative models, and it was discovered that both Dell- Belaware and Engineering Science Data Unit (ESDU) approaches produced the optimal results required for the selection of shell side and tube fluid film coefficients, respectively over other correlations. In conclusion, the values of parameters of interest were also presented after rigorous mathematical calculations at optimal level and probable recommendations were later made.
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    Performance Characteristics of a Single-Cylinder Two-Stroke Diesel Engine using Diesel-RK Software
    (International Journal of Scientific & Engineering Research, 2020-06) Olaiya, Kamorudeen Adesina; Alabi, Ismaila Olanrewaju; Okediji, Adebunmi Peter
    The demand for software that is capable of solving internal combustion engines (ICEs) simulation problems is increasing on a daily basis. Thus, this article presents the application of Diesel-RK in investigating the performance characteristics of a single cylinder two- stroke turbocharged Hesselman’s diesel engine with direct fuel injection. Three different engine operating speed 1500, 2000 and 2500 rpm, respectively were utilized and their effects on certain engine performance parameters were investigated numerically. The highest overall specific fuel consumption and engine efficiency of 0.53342 kg/kWh and 0.1588, respectively were obtained at 2000 rpm. More power was delivered at 2000 rpm as a result of the highest value of engine torque obtained at that speed. The cylinder pressure increases significantly as the engine speed increases at ivc (2.0451 bar), evo (3.7801 bar) and tdc (60.141 bar), respectively. This indicates that the pressure developed when the inlet valve closes increases as the piston translate from bdc to tdc on compression, to the value required for combustion and this value dropped as the exhaust valve opens. However, the optimal values corresponding cylinder temperature increases significantly at ivc (717.24 K), evo (1088.5 K) and tdc (1560.8 K), respectively at a speed of 2500 rpm. Also, the engine speed had appreciable impact on the heat exchange parameters, because the values of those parameters increases as the engine speed increases. The effect of engine speed on the ecological, combustion, turbocharged and gas exchange parameters were also studied using Bosch, Hartridge and Strouhal dimensionless numbers and it is evident that engine speed is significant in the study of engine performance parameters and the best values of those parameters were obtained at 2000 rpm.