Abstract

The task of the air intake manifold is to provide the air that satisfies the requirements of the engine over its operating regime. Intake manifolds consist typically of a plenum with individual runners feeding branches which lead to each cylinder: as consequence, the engine performances as power, torque and efficiency are strictly connected to the geometry and behavior of our products.
The design process is a complex flow where different tools work together to obtain the geometry of the air intake manifold that lead to the engine performances required by the customers: it is not a simple process due to the different fluid dynamics needs, to the geometrical constraints and to the conflicting target of performances.
A multi-objective optimization with modeFRONTIER has been carried out, by integrating in the design workflow a 1D software, to optimize the main engine performances (torque and power), and a 3D CFD software, in order to further improve the best solutions optimizing pressure drop, flux homogeneity, etc.