DSpace Collection:http://hdl.handle.net/123456789/57552024-03-29T05:45:18Z2024-03-29T05:45:18ZTransient Analysis of Directional Magneto Rheological Fluid Valve Using Computational Fluid DynamicNurul 'Ain Farhana binti Ahmad Zainolhttp://hdl.handle.net/123456789/58422015-12-29T04:24:56Z2014-03-07T00:00:00ZTitle: Transient Analysis of Directional Magneto Rheological Fluid Valve Using Computational Fluid Dynamic
Authors: Nurul 'Ain Farhana binti Ahmad Zainol
Abstract: The MRF valve have been designed and developed by many researchers. However, the behaviour of the fluids in the valve, how fluid reacts and the characteristic of the fluid flow in the valve still lack in info and research. It is important to understand the MR fluid flow in the valve for later we can design an optimal control system of the MR fluid valve. In designing the control system, to understand the MR fluid behaviour and characteristic is very crucial as it will affect the valve pressure drop. On the other hand, the hydraulic actuator movement is dependent on the pressure difference in the valve. Therefore, it is important to analyze the MR fluid flow behaviour and characteristic to identify the pressure drops transient response of MRF valve with varying in magnetic field. n analyzing the MR fluid flow in the valve, the CFD approach is most suitable. The difficulties that occur in making a computer modelling is that, first, the viscosity change with the change of the magnetic field. Hence, the appropriate viscosity of MR fluid model is to be determined. Next, for the case in this project, the flow of the MR fluid is in unsteady state, which the analysis must be based on time change. The viscosity model of Herschel Bulkley will be use for the analysis. From the CFD simulation, the results obtained have agreed with the experimental result and has shown a good agreement up to 5%. The magnetic field give significant has affected to pressure drop as shown in the magnetic theory.
Description: Bachelor of Engineering Technology in Mechanical (Automotive)2014-03-07T00:00:00ZThe Performance and Characteristics of 4-Stroke SI Engine Liquefied Petroleum Gas (LPG)Alimmi Fuzail bin Mah Hussinhttp://hdl.handle.net/123456789/58412015-12-29T04:24:56Z2014-03-07T00:00:00ZTitle: The Performance and Characteristics of 4-Stroke SI Engine Liquefied Petroleum Gas (LPG)
Authors: Alimmi Fuzail bin Mah Hussin
Abstract: Concern about fast depletion of petroleum-based fuels and its environmental impact has led many researchers to find other alternatives fuels. Research‟s studies on Liquefied Petroleum Gas (LPG) has demonstrated that it is suitable as an alternative to conventional fuel and it can run cleaner at attractive prices and in large operation range. In present study, the performances characteristics of 4-stroke engine fuelled by Liquefied Petroleum Gas (LPG) were mentally investigated. The primary objectives is to study the performance and emission of using Liquefied Petroleum Gas (LPG) as the fueled. The primary content of Liquefied Petroleum Gas (LPG) is propane 60% and 40% butane. A single cylinder, 4-stroke spark ignition with 107cc and 9.2:1 compression ratio, Liquefied Petroleum Gas (LPG) kits and chassis dynamometer was used in the experiment. A gas Non Dispersive Infra- Red (NDIR) analyzer was used for measure CO, CO2, and HC produced by exhaust. Performances and emission between gasoline and Liquefied Petroleum Gas (LPG) was compared in term of brake power, brake mean effective pressure, brake specific fuel consumption and brake thermal efficiency. It was found that the BSFC and Ƞth show the improvement with Liquefied Petroleum Gas (LPG) as an alternative fuel. The concentration level of CO, CO2 and HC lower than the engine fuelled by gasoline.
Description: Bachelor of Engineering Technology in Mechanical (Automotive)2014-03-07T00:00:00ZTemperature Control for Electrical Vehicle Car Battery.Firdaus bin Ismailhttp://hdl.handle.net/123456789/58402015-12-29T04:24:56Z2014-03-07T00:00:00ZTitle: Temperature Control for Electrical Vehicle Car Battery.
Authors: Firdaus bin Ismail
Abstract: This temperature control for electrical vehicle car battery can be control by using a microcontroller when it detects certain temperature that has been set in the microcontroller program. The purpose of this project is reducing high temperature in the battery compartment because when heat is circulating in the battery compartment it will reduce the battery voltage and also to prevent waste of voltage usage when it is not hot enough for fan to be need or turn on. This project is combination of direct current (DC) motor fan, microcontroller (PIC), and temperature sensor. To complete this project there few steps need to be taken which are the selections of temperature sensor, power supply, DC motor fan, design controlling circuit using PIC, developing source code for PIC and use suitable apparatus to design all circuit. As the conclusion this project is to design and construct an automated DC motor fan system using temperature sensor which is controlled by microcontroller to produce air flow for the purpose of reduce high temperature, prevent waste of voltage and produce air flow for the ventilation and exhaust in car battery compartment. The DC motor fan will turn on according to the certain level of temperature.
Description: Bachelor of Engineering Technology in Mechatronic (Automotive)2014-03-07T00:00:00ZStudying of Electrical Capacitance Tomography Optimization for Radial Length and Shielding Noise (ECT)Onn biin Ali Othmanhttp://hdl.handle.net/123456789/58392015-12-29T04:24:56Z2014-03-07T00:00:00ZTitle: Studying of Electrical Capacitance Tomography Optimization for Radial Length and Shielding Noise (ECT)
Authors: Onn biin Ali Othman
Description: Bachelor of Engineering Technology in Mechatronic (Automotive)2014-03-07T00:00:00Z