Development and Modification of a Single Overhead Camshaft 4-Valve 4-Stroke 135 cc Formula Varsity Race Car Engine

The engine that was chosen to be developed and modified is Yamaha LC 135 Single Overhead Camshaft (SOHC) 4-valve 4-stroke 135cc liquid-cooled engine. The engine selection is based on the specification, rule and regulation in UTeM Formula Varsity 2012 (FV 2012). The engine performance is determined by engine operating characteristics. The engine air flow affects the filtration, intake and exhaust systems. The heat from the engine rejected to the surrounding through the active cooling system which has radiator and fan. The selection of the engine is based on weighted decision matrix which consists of reliability, operating and maintenance cost, fuel consumption and weight. The score of the matrix is formulated based on relative weighted factor among the selections. It been compared between Yamaha LC 135 Single Overhead Camshaft (SOHC) 4-valve 4-stroke 135cc liquid-cooled engine, Honda Wave 125 X Air Cooled, 4 Cycle Engine Overhead Camshaft (OHC) and Suzuki Shogun RR 4 stroke air cooled Single Overhead Camshaft (SOHC). The modification is applied to the engine through the simulation and tuning of Capacitor Discharge Ignition (CDI)

Frequency Reuse Optimization For OFDMA Network

This study investigated the frequency reuse optimization scheme for Orthogonal Frequency Division Multiple Access (OFDMA). Forsk Atoll, Earth Explorer and Global Mapper 15 were used to deploy the simulations, local area (Ayer Keroh, 2.2667°N 102.2833°E) was selected to perform the simulation. The simulation result showed that by implementing Fractional Frequency Reuse (FFR) in Orthogonal Frequency Division Multiple Access (OFDMA) network on the area, gave a significant improvement, in term of co-channel interference and Received Signal Strength Indicator (RSSI). Very low co-channel interference and a strong signal strength occurred on the selected area by modifying the related parameters such as frequency allocation for every single sectoral antenna, antenna height, power of base station and antenna tilt degree. Limited frequency allocation available in the simulation software cause the co-channel interference still exist, although, the values are considered very unsignificant. Improvement can be made by adding frequency resources and physical drive test to validate the simulation measurement result

An accurate pattern classification for empty fruit bunch based on the age profile of oil palm tree using neural network

This paper proposes an efficient method for pattern classification system of empty fruit bunch (EFB) by using a neural network technique. The main advantage of this method is the accuracy and speed of algorithm such that it can be computed rapidly with the proposed system. To test the effectiveness of the proposed method, 120 of EFB’s data with different ages and length that been obtained from Malaysian Palm Oil Board (MPOB) are use in the pattern classification process. In addition, there  are three classes of EFB in this system, which are Class 1 (less than 7 year old), Class 2 (8 to 17 year old) and Class 3 (more than 17 year old). It is envisaged that the proposed method is very useful in classifying the EFB and  90% of the sample parameters are successfully classified to its class

APPLICATION OF THEORY OF INVENTIVE PROBLEM SOLVING FOR SYSTEMATIC INNOVATION: CASE STUDY OF WATER DISPENSER DESIGN

This paper presents the application of the Theory of Inventive Problem Solving (TRIZ) method in providing systematic innovation process of consumer product. The TRIZ contradiction matrix and 40 inventive principles tools were employed in this project and its applications was demonstrated through a case study of a water dispenser. The final outcome obtained was the development of new water dispensing bottle design which is able to address the need for easy and cost effective solution while retaining the current principle of operation especially during the water bottle changeover proces

Design and Development of UTeM Perodua Eco-challenge Vehicle

This paper presents the design and development of the UTeM Perodua Eco-Challenge vehicle. The aim of the project was to develop a new generation of fuel efficient car which able to travel the longest distance using 0.5 liter of RON95 fuel. The eco-car was designed as a single seat rear wheel drive vehicle powered by a 660cc fuel injection engine with manual 5-speed transmission and weighs of 355 kg with 30:70 load distribution. The key design features of the fuel efficient car were also discussed in this paper such as space frame chassis design, braking system,composite bodywork and suspension system. Modifications on the engine were also discussed such as engine management to further increase the vehicle fuel efficiency