Importance

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Abstract

An air induction system for an internal combustion engine is disclosed. The system includes a housing having a closed end, walls extending from the housing end, and an open end. The open end has a flanged perimeter with a hollow cross section in a portion thereof. The system also may include integral stiffening ribs extending along portions of the walls and the closed end. The stiffening ribs having hollow base portions which operate to minimize depressions caused by the ribs on the sides of the walls opposite the ribs. The hollow base portions allow an increase in rib height and, as such, rib stiffness over typical solid ribs. The hollow cross section perimeter and enlarged stiffener ribs operate to define the area moment of inertia of the housing member.

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First Claim