Air duct attenuator
AssigneeJaguar Cars Limited
InventorRaymond Cheung
Life of this patent
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Abstract
An attenuator for the air inlet tract of an internal combustion engine comprises an unobstructed tube (4) having a surrounding enclosure (9) divided into a primary chamber (11) in fluid communication with the inlet tube, and a secondary chamber (12) in fluid communication with the primary chamber. Two secondary chambers (12, 13) may be provided. The arrangement can be tuned to attenuate a wide range of frequencies.
Claims18
An attenuator for a fluid duct and comprising a tube having a wall, an inlet and an outlet, an enclosure surrounding the tube, and an annular baffle dividing the enclosure into primary and secondary chambers, wherein the interior of the tube is in fluid communication with the primary chamber via apertures in the tube wall, and the secondary chamber is in communication with the primary chamber via openings in the baffle, and wherein the secondary chamber is closed apart from the openings.
Dependencies are inferred from the claim text.