| 摘要 |
The hollow body of an intake silencer comprises a pair of matching insert (42,44) of rigid moulded plastics material which are confined in a lower-cup shaped element (28) by a lid (30) and which together have a T-shaped configuration with a longitudinal partition (46) which corresponds to the leg of the T and which extends in the lower element (28) dividing it into two juxtaposes resonance chambers (88, 90), and with a transverse partition (48-56) which corresponds to the transverse portion of the T and which separated the juxtaposed resonance chambers (88, 90) from an upper outlet chamber (96). Each insert (42, 44) comprises a respective upper flange (48, 56) corresponding to a respective half of the transverse partition. One of the inserts comprises the longitudinal partition (46) and this longitudinal partition has a siphon-shaped half-duct (52) in the form of a recess; the other insert (44) comprises at least one semi-tubuler appendage (54) of corresponding siphon-like shape, extending from the respective upper flange (56) and constituting another half-duct which, in combination with the aforesaid recess (52), completes the internal duct.
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