초록 ▼

A catalytic converter includes a shell defining first and second shell portions. A first substrate supports a reducing catalyst in the first shell portion. A second substrate supports an oxidizing catalyst in the second shell portion. The shell further includes inlet and outlet passageways. The inle

A catalytic converter includes a shell defining first and second shell portions. A first substrate supports a reducing catalyst in the first shell portion. A second substrate supports an oxidizing catalyst in the second shell portion. The shell further includes inlet and outlet passageways. The inlet passageway is disposed in the shell adjacent the first shell portion and allows combustion products to enter the shell. The outlet passageway is disposed adjacent the second shell portion and allows combustion products to exit from the shell. A third passageway located longitudinally between the first and second shell portion allows combustion product to flow readily from the first shell portion into the second shell portion. A manifold introduces air into the combustion product flowing through the third passageway and an air fitting provides access to the manifold through an exterior wall of the shell. The manifold extends perimetrally at least partially about, and conforms to the interior wall of, the shell in the third passageway. The manifold has a plurality of apertures which open inwardly to direct a plurality of streams of air from the manifold into the stream of combustion product flowing through the third passageway. The converter can be of a “clam shell”type, having first and second longitudinal shell halves, or it can have a one-piece main shell portion.

대표청구항 ▼

In a catalytic converter for combustion product comprising a shell defining first and second longitudinally spaced apart shell portions, said shell having an interior wall, a first substrate containing a reducing catalyst, the first substrate disposed in the first shell portion, a second substrate c

In a catalytic converter for combustion product comprising a shell defining first and second longitudinally spaced apart shell portions, said shell having an interior wall, a first substrate containing a reducing catalyst, the first substrate disposed in the first shell portion, a second substrate containing an oxidizing catalyst, the second substrate disposed in the second shell portion, said shell further having an inlet for introducing combustion product into the first shell portion and an outlet for exhausting combustion product from the second shell portion, and a third passageway providing communication between the first and second shell portions, means for introducing air into the combustion product flowing longitudinally through the third passageway and means for providing access to the air introducing means through the shell, the inprovement wherein the air introducing means comprises at least one channel section, the at least one channel section being formed to extend perimetrally substantially completely about the interior wall of the shell generally transversely to combustion product flow through the third passageway, the at least one channel section including upstream and downstream edge portions for engaging the interior wall of the shell and an intermediate portion extending between the upstream and downstream edge portions for defining between the channel section and the shell interior wall a manifold, said manifold including a plurality of apertures opening inwardly for directing a plurality of streams containing air from the manifold into the combustion product.