Browsing by Author "Alabi, Ismaila Olanrewaju"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    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.
  • Thumbnail Image
    Item
    Numerical Simulation of Temperature Distribution in A Tri-Cycle Engine Piston
    (International Journal of Scientific & Engineering Research,, 2015-06) Alabi, Ismaila Olanrewaju; Adesina, Olaiya Kamorudeen; Olalekan, Kareem Mutiu
    Pistons as one of the most complex components among all automotives and other industry field components are de-signed to withstand damage caused due to extreme heat and pressure of combustion process. Many of experimental studies regarding the internal combustion engines process have been carried out, but few had only focused on the numerical studies like stress distribution, thermal and heat transfer analysis. This present study focuses on a 3-D transient state temperature dis-tribution analysis on a gasoline piston model of a tri-cycle. Mathematical model was formulated, solved and simulated using a Finite Element Method (FEM) in-built in the COMSOL Multiphysics software 4.3a to determine the temperature distribution and gradient of the piston model ranging from 523K – 673K. The parameters used for the simulation were liquid (Gasoline), Gases (Air) and Aluminium alloy UNSA96061 (Piston). The Completed mesh tetrahedral consists of 86225 elements and the number of degrees of freedom solved for were 18553 in 367 s (6 minutes, 7 seconds) in the mesh optimization. It was discovered from the results obtained that the temperature in the combustion chamber of the tricycle engine varies with respect to time, along the pis-ton.The transient analysis from the time dependent solver revealed that the temperature of the piston at the TDC (Top Dead Centre) in the first power stroke is higher compared to the subsequent power strokes, which is an indication that more heat was transfer at subsequent power strokes. Probable recommendations were later made.
  • Thumbnail Image
    Item
    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.