Optimization of Exhaust Manifold of a Multi Cylinder Engine using CFD
Keywords:
Back Pressure, Volumetric Efficiency, Geometrical changes.Abstract
Exhaust manifold of an internal combustion engine has a significant importance in improving the engine’s volumetric efficiency. Though the intake system dominates the cylinder filling process, exhaust system too have an equal importance in cylinder filling process. The volumetric efficiency of an engine directly depends on expel the exhaust gases, sucking of fresh charge for the effective combustion. The back pressure at the exhaust plays a significant role in exhaust system functioning. It should be as low as possible to have a better expel. In order to push out the exhaust gases effectively a well-designed manifold is mandatory. The work involves modelling and CFD analysis of flow through exhaust manifold in different models with geometrical changes of existing model and finding the flow characteristics to suggest the model with optimized back pressure at exhaust.