Abstract
Internal combustion engines are considered as complex system. The important aspect of any engine is power output which, largely depends upon the proper combustion of air fuel mixture. The aim of this research work is to outline the improve performance of Four stroke Compression Ignition engine by modifications in Inlet manifold geometryThe study is performed on Kirlosakr CI engine. At beginning design of existing inlet valve was studied and CAD drawing is prepared in CATIA V5 Software. Based on existing design and work done by various researchers new modified inlet valve with addition of small plate, is designed in CATIA V5 Software. The numerical investigation is performed using Ansys CFX solver in 14.5 In numerical simulations Engine with two ports is considered to be designed to study the movement of air flow
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