Diesel Engine Intake Manifold

Numerical Optimization of a Diesel Engine Intake Manifold


Intake ManifoldAn intake manifold is one of the primary components regarding the performance of an internal combustion engine. In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide emissions reduction technique used in diesel engines. EGR works by recirculating a portion of an engine’s exhaust gas back to the engine cylinders. A typical intake manifold is shown in Figure 1. 


Velocity magnitude and EGR mass fraction distribution of intake systemThe objective of this project is to determine the EGR distribution in six different outlets during the operation. Also, the movement inside the manifold is expected to find out. A series of Computational Fluid Dynamics (CFD) simulations will be performed, and the results will provide a clear idea about the flow round the plenum chamber. In addition to the numerical evaluation of the airflow through the intake manifold, a movie will be provided to show the animated movement.


EGR mass flow rate at outletsBy analyzing the simulation results, the following conclusions were drawn: the pressure drop across runners was non-uniform and the EGR distribution in different outlets is variable. Additionally, it is shown that the outlets operated alternately. 

Sponsor: LHP Software Solutions

 Diesel engine intake manifold flyer

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