Intake Manifold Design Using Computational Fluid Dynamics

In automotive technology, an intake manifold is the component of an engine that transports the air-fuel mixture to the engine cylinders. The primary purpose of the intake manifold is to evenly distribute the combustion mixture to each intake port of the engine cylinder. Even distribution is important to optimize the volumetric efficiency and performance of the engine, but the major problem in the thesis was to identify that; to achieve the even distribution of flow at each cylinders, to select the best turbulence model for the analysis of manifold using computational fluid dynamics, to achieve the maximum mass flow rate through the restricted size C-D nozzle, to maintain the equal pressure throughout the plenum, to propagate back the higher pressure column of air to intake port within the duration of the intake valve's closure. To achieve the even flow of distribution and improve the volumetric efficiency, author divided his analysis into three different part restrictor, plenum, and cylinder runner and then analysed the final intake manifold. Dividing the work into three different part and then combine them as single manifold part provide the greater refinement in the result.