Multi-frequency engine intake resonator
AssigneeFleetguard, Inc.
InventorsC. Raymond Cheng, Jeffrey A. Rech
Life of this patent
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Abstract
An engine intake resonator and manufacturing method is provided by a pair of molded sheets mated to each other along a plane and defining a plurality of tubular channels therebetween and having different length for attenuation of different frequencies.
Claims24
An engine intake resonator comprising a pair of molded sheets mated to each other along a plane and defining a plurality of tubular channels therebetween, a half of a respective channel being formed during molding of a respective flat planar sheet to deform a portion of said sheet and bulge said portion laterally away from said plane, each channel being formed by mating of said sheets along said plane with respective opposing half channels forming a respective channel, a first of said channels having a first length between an entrance and a terminating end, a second of said channels having a second length between an entrance and a terminating end, said second length being different than said first length, for attenuation of different frequencies.
A method for making an engine intake resonator, comprising providing a pair of planar sheets, molding said sheets in a mold to mate said sheets to each other along a plane and defining a plurality of tubular channels therebetween, molding half of a respective channel during molding of the first of said sheets and deforming a portion of said first sheet and bulging said portion of said first sheet laterally away from said plane, molding another half of said respective channel during molding of the second of said sheets and deforming a portion of said second sheet and bulging said portion of said second sheet laterally away from said plane, forming each said channel by mating said sheets along said plane with respective opposing said half channels forming a respective channel.
Dependencies are inferred from the claim text.