EP0128653A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catalytic converter housing
Assignee: Meritor Inc
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Filing: 1984-05-01
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Granted: —
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Expires: 2004-05-01
Abstract
Abstract Two-stage catalytic converters for automobile exhaust gas treatment are known. Such a converter has a housing which contains a reducing catalyst in an upstream portion and an oxidising catalyst in a downstream portion. It is desirable to provide a converter housing which can have a wider variety of applications than in known converters, and also a housing which is more durable and less likely to fail under stress. The converter housing (14) (Figure 4) has an upstream reducing catalyst (48) and a downstream oxidising catalyst (50) and between them a connecting space surrounded by a manifold (52) which has upper and lower halves each having a pair of oppositely directed flanges (64, 65) which fit the interior of the housing (14). Between the flanges is an inwardly recessed portion (60) through which air can be introduced to the connecting space by way of holes (82).
Inventors
- 👤 Timothy Z. Thayer
- 👤 Frank W. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/30; F01N13/00; F01N13/18; F01N2270/00; F01N2270/04; F01N2350/00; F01N2350/02; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
266 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, and means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, the first mating section including a stud, and the second mating section including an aperture, the aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and wherein each shell half includes a portion of the interior wall for attaching the pair of flanges of the manifold halves, the portion having a greater longitudinal extent than the longitudinal extent of the pair of manifold flanges.
Claim 2
Dependent Claim
266 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, and means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, the first mating section including a stud, and the second mating section including an aperture, the aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and wherein each shell half includes a portion of the interior wall for attaching the pair of flanges of the manifold halves, the portion having a greater longitudinal extent than the longitudinal extent of the pair of manifold flanges.
Claim 3
Dependent Claim
42 words
The invention of claim 1 further comprising a stud in the second mating portion and an aperture in the first mating portion, the aperture in the first mating portion being sized and positioned to receive the stud in the second mating portion.
Claim 4
Dependent Claim
18 words
The invention of claim 2 wherein the manifold halves are generally similar and disposed in a head-to-tail relation.
Claim 5
Dependent Claim
30 words
The invention of claim 1 wherein the said stud includes an opening to allow the air to flow through the opening in the stud and aperture which receives the stud.
Claim 6
Dependent Claim
26 words
The invention of claim 1, further comprising at least one exteriorly convex stiffening ridge formed into at least one of the first and second shell halves.
Claim 7
Dependent Claim
261 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto at a preselected location, the interior wall having a greater longitudinal extent than the longitudinal extent of the manifold flanges, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, the first mating section including a stud, and the second mating section including an aperture, the aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and means providing a passageway through the wall for introducing air into the manifold halves.
Claim 8
Dependent Claim
261 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto at a preselected location, the interior wall having a greater longitudinal extent than the longitudinal extent of the manifold flanges, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, the first mating section including a stud, and the second mating section including an aperture, the aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and means providing a passageway through the wall for introducing air into the manifold halves.
Claim 9
Dependent Claim
19 words
The invention of claim 6 wherein the manifold halves are disposed closer to the inlet than to the outlet.
Claim 10
Dependent Claim
18 words
The invention of claim 6 wherein the manifold halves are disposed closer to the outlet than the inlet.
Claim 11
Dependent Claim
265 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves disposed in a head-to-tail relation, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto at a preselected location, the interior wall having a greater longitudinal extent than the longitudinal extent of the manifold flanges, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, each first mating section including a stud, and each second mating section including an aperture, each aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and means providing a passageway through the wall for introducing air into the manifold.
Claim 12
Dependent Claim
265 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves disposed in a head-to-tail relation, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto at a preselected location, the interior wall having a greater longitudinal extent than the longitudinal extent of the manifold flanges, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, each first mating section including a stud, and each second mating section including an aperture, each aperture of said second mating section being sized and positioned to receive the stud of the first mating section, and means providing a passageway through the wall for introducing air into the manifold.
Claim 13
Dependent Claim
241 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, and means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, and wherein each shell half includes a portion of the interior wall for attaching the pair of flanges of the manifold halves, the portion being generally continuous to allow selective placement of the manifold halves in the body portion to accommodate reducing catalysts and oxidizing catalysts of various sizes.
Claim 14
Dependent Claim
241 words
In a catalytic converter having a longitudinally disposed body portion comprising first and second shell halves having a wall defining an interior through which a combustion product can flow, the body having an inlet through which the combustion product can flow into the interior of the body and an outlet through which the combustion product can flow out of the interior of the body, a reducing catalyst disposed in the interior of the body proximal to the inlet, an oxidizing catalyst disposed in the interior of the body proximal to the outlet, and means for providing a passageway between the body interior containing the reducing catalyst and the body interior containing the oxidizing catalyst, the improvement comprising first and second manifold halves, each half including a pair of flanges extending perimetrally substantially completely around the interior wall of one shell half, the manifold flanges being disposed substantially parallel to the interior wall and coupled thereto, the manifold flanges including a portion recessed inwardly from the interior wall and first and second mating sections, the recessed portion including means for introducing air into the passageway between the reducing catalyst and the oxidizing catalyst, and wherein each shell half includes a portion of the interior wall for attaching the pair of flanges of the manifold halves, the portion being generally continuous to allow selective placement of the manifold halves in the body portion to accommodate reducing catalysts and oxidizing catalysts of various sizes.
References Cited (Backward Citations)
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