Patent ID: 7631726
Filing Date: 2009-12-15
Classification: F01N,F02M

Abstract:
1. An air induction silencer assembly comprising: an outer cover defining a conduit; an acoustic interference member disposed within the conduit, the acoustic interference member being tuned to acoustically cancel a selected noise energy frequency, wherein the acoustic interference member includes a first plate and a second plate configured in the shape of a cross, wherein the first plate includes a plurality of blind holes, and the second plate is solid; an acoustic absorbing member disposed within the conduit, wherein the acoustic absorbing member converts noise energy within the conduit into heat energy; and a cage disposed within the outer cover, the cage defining an annular space between the outer cover and the cage and including a plurality of elongated openings that extend circumferentially around the cage, the elongated openings being longer in a circumferential direction than in an axial direction, and an axial length of the elongated openings being greater than a thickness of the cage.