Experimental investigation of four throttle system in four cylinder internal combustion engine / Syed Muslim Syed Kamaruddin

Current trends to gain a higher engine performance are to convert a naturally aspirated engine to a forced induction system. This kind of performance-based approach has forced us to do some modifications with naturally aspirated engine either to modify the original parts or replace a new performance part. Since the intake manifold is one of the primary factors that affect the engine performance, this study involves one method of modification to the intake manifold to raise gain an optimum power of a naturally aspirated engine. This project will study how far the modification to the intake manifold contributed in generating the engine power by replacing the present intake manifold with an Individual Throttle Body (ITB) intake manifold system as mostly known as Four Throttle system. The four throttles system offers the highest level performance for naturally aspirated engines. A rapid increment in volumetric efficiency has contributed to the sudden change of engine output. The performance achievement of the four throttle system will be tested using 'on wheel dynamometer5 testing method. The significance differences of the power achievement between these two intake manifold will show us the effectiveness of the modification. Applying the four throttle intake manifold to the engine will be done carefully in order to pretend harm and maintain the engine's reliability. Hopefully, upon the completion of this project, it will give us a preferable result in order to improve the engine performance and will be able to apply it in racing engine.