Patent ID: 8485153
Filing Date: 2013-07-16
Classification: F02M

Abstract:
1. An air induction passageway for an internal combustion engine comprising; an air intake duct, said air intake duct having an inlet end and an outlet end and a passageway defined by a side wall extending between said inlet end and outlet end, said air intake duct including an opening formed in a portion of said wall, a flange formed on the outer surface of said air intake duct surrounds said opening, said flange being directed radially outward from the wall of said air intake duct and a grid having an outer perimeter frame that conforms to an inner perimeter formed by said flange; said air induction passageway further including an acoustic membrane mounted within said opening, said acoustic membrane is sized to fit within said flange and fit within said opening; said acoustic membrane being formed from a woven material wherein the woven material of said acoustic membrane has a weight within the range of 25 to 85 g/m whereby said acoustic membrane reduces inlet noise by dissipating pressure waves in the air intake duct.