Mechanical design of custom intake manifold targeting distinct RPM range : VAG AKL engine

Abstract

The optimization of intake manifold design plays a pivotal role in internal combustion engine behavior. The thesis work studied how alteration of intake manifold parameters shifts the peak torque from 3800 to 3000 RPM in VAG AKL engine. By reviewing specific literature key parameters affecting the performance were identified and described. SolidWorks was utilized to develop the conceptual design and re-fine the geometry. Model was subjected to CFD simulations in Ansys Fluent to evaluate air distribution and airflow parameters such as dynamic pressure and velocity. The final prototype model provides the insights on how the combination of plenum volume and runner dimensions affect acoustic supercharging effect that increases volumetric efficiency of naturally aspirated engines at desired RPM range.