초록 ▼

A muffler is provided with a pair of stamp formed internal plates and a pair of stamp formed external shells. The internal plates define inlet and outlet tubes at least portions of which are provided with arrays of perforations or louvers. One or more tuning tubes may be stamp formed in the internal

A muffler is provided with a pair of stamp formed internal plates and a pair of stamp formed external shells. The internal plates define inlet and outlet tubes at least portions of which are provided with arrays of perforations or louvers. One or more tuning tubes may be stamp formed in the internal plates and one or more low frequency resonator chambers may be stamp formed from portions of either the internal plates or the external shells. The external shells may further be configured to define high frequency tuning chambers of a selected size and shape.

대표청구항 ▼

A muffler for mounting to at least one exhaust pipe and at least one tail pipe of a vehicle, said muffler comprising a pair of plates securely connected to each other in generally face to face relationship, each of said plates being stamp formed to define an array of channels therebetween, said chan

A muffler for mounting to at least one exhaust pipe and at least one tail pipe of a vehicle, said muffler comprising a pair of plates securely connected to each other in generally face to face relationship, each of said plates being stamp formed to define an array of channels therebetween, said channels being configured to define at least one inlet tube and at least one outlet tube in communication with one another and connectable to the exhaust pipe and tail pipe respectively, said inlet and outlet tubes each including at least one array of perforations extending therethrough, said arrays of channels further defining at least one tuning tube in communication with at least one of said inlet and outlet tubes, said muffler further comprising at least one stamp formed external shell securely mounted to said plates, said external shell being stamp formed to define: inlet and outlet openings surrounding and mounted to selected portions of said inlet and outlet tubes respectively, at least one chamber enclosing the arrays of perforations in said plates, and at least one stamp formed low frequency resonating chamber in communication with the tuning tube formed by the plates.