Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
NUMERICAL ANALYSIS OF THE AIR FLOW IN INTAKE MANIFOLDS OF INTERNAL COMBUSTION ENGINES
Submission Author:
Ana Marta Souza , MG , Brazil
Co-Authors:
Ana Marta Souza, Hugo de Sanches Souza, TAYNARA BRITO DA SILVA, Kaissar Nabbout
Presenter: Ana Marta Souza
doi://10.26678/ABCM.COBEM2017.COB17-1132
Abstract
Optimizations on the performance of an internal combustion engine are important, because they are responsible for reducing fuel consumption and pollutant emissions. The intake manifold has a fundamental relevance on the engine performance, since it has to lead the air flow into the cylinders properly. In this way, the geometry of the ducts and plenum has a fundamental role in the engine performance. A good project of the intake manifold could help increase the load inside the cylinder, ensuring a higher volumetric efficiency. The engine torque and, consequently, power, are directly related to the volumetric efficiency. Furthermore, such project could minimize the head loss and avoid the cylinder to cylinder variability. The present work presents an analysis of the air flow in intake manifold through the Computational Fluid Dynamics (CFD) simulations using AVL/FIRE software. The air flow was investigated in three different intake manifolds, in which the principal difference is the cross section of the ducts. The results made it possible to verify the behavior of the air inside the plenum and the ducts, the recirculations formed, the head losses and the possible impacts in the engine operation.
Keywords
Internal combustion engine, intake manifold, Computational Fluid Dynamic (CFD), AVL/FIRE
