Structural Design and CFD Analysis of Engine Plastic Intake Manifold

Abstract

The quality of the intake manifold has a direct impact on the performance of the engine. Based on the characteristics of the cavity structure of the intake manifold, this paper designs a new three-dimensional cavity model of the intake manifolds. Then the author analyses the flow field of intake manifold, the flow velocity and pressure distribution and local pressure loss in the airway by using CFD fluid analysis software. The results show that the flow field inside the intake manifold is stable without obvious pressure loss area and no airflow wall separation phenomenon. Hence the resulting design could meet initial design requirements with improvement of power and economy of the engine.