المجلة الدولية للعلوم والتقنية

Exhaust and Intake valves are very essential components of internal combustion engines. They are used to seal the working space in the cylinder and are opened and closed to control the fresh inlet air to the cylinder and exhaust the burnt gas to the manifold. It is an important process for a smooth-running engine. This paper studies the stress induced on both exhaust and intake valves due to high temperature inside the combustion chamber, cam force and the spring force. Nx Nastran is used for modeling the valve and simulation. In general, there are standard alloys that are used for making valves, however, this study includes Static thermal and structural analysis on other different materials which give high strength and good corrosion resistance. The results are tabulated and discussed.