Muffler for vehicle exhaust system
AssigneeFaurecia Emmissions Control Technologies
InventorJoseph E. Callahan
Life of this patent
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Abstract
A muffler for a vehicle exhaust system includes a first outer shell, a second outer shell that cooperates with the first outer shell to define a muffler interior cavity, and at least one porous partition that separates the muffler interior cavity into at least first and second sub-cavities. In one example, the porous partition is integrally molded with at least one of the first and second outer shells. In one example, an exhaust tube extends through the first sub-cavity and acoustic fiber material is located within the first sub-cavity.
Claims24
A muffler for a vehicle exhaust system comprising:
- a first outer shell;
- a second outer shell that cooperates with the first outer shell to define a muffler interior cavity;
- at least one porous partition to separate the muffler interior cavity into at least first and second sub-cavities;
- an exhaust tube spaced apart from the at least one partition and extending through the first sub-cavity;
- and
- acoustic fiber material only in the first sub-cavity.
A muffler for a vehicle exhaust system comprising:
- a first outer shell;
- a second outer shell that cooperates with the first outer shell to define a muffler interior cavity, and wherein the first and second shells are comprised of a molded material;
- at least one porous partition integrally molded with one of the first and second outer shells to separate the muffler interior cavity into at least first and second sub-cavities;
- a muffler inlet into the first sub-cavity, the muffler inlet formed in at least one of the first and second outer shells;
- and
- a muffler outlet from the first sub-cavity, the muffler outlet formed in at least one of the first and second outer shells.
A method of forming a muffler for a vehicle exhaust system comprising the steps of:
- molding first and second outer shells that are subsequently attached to each other to define a muffler interior cavity;
- integrally molding at least one porous partition with at least one of the first and second outer shells to form at least first and second sub-cavities;
- and
- forming a muffler inlet into the first cavity and a muffler outlet from the first sub-cavity, the muffler inlet and outlet being provided in at least one of the first and second outer shells.
Dependencies are inferred from the claim text.