| 摘要 |
An intake assembly with an optimal noise level, especially an intake duct for use as the manifold of an internal combustion engine. The noise level is optimized by introducing shunt resonators (16, 18) in collecting manifold of the intake duct, which is produced using a multi-shell technique. The inserted structures (16, 18) can be adhered or welded before the shells are joined, or they can be inserted in a preexisting duct formed of previously joined half shells. The shunt resonators (16, 18) require little space and can also be used for subsequently optimizing the intake ducts in the test phase, if the initial test results are acoustically unsatisfactory.
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