Catalyst with a double casing system
First Claim
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1. A catalytic converter, comprising:
- a) at least one metal honeycomb catalyst carrier body through which exhaust gas can pass;
b) at least one inner jacket tube having first and second end regions, said at least one catalyst carrier body being received in said at least one inner jacket tube;
c) an outer jacket tube approximately concentrically surrounding said at least one inner jacket tube and having first and second end regions;
d) said first end region of said at least one inner jacket tube being firmly joined to said first end region of said outer jacket tube;
e) said at least one inner jacket tube being freely longitudinally expandable in said outer jacket tube; and
f) a sliding seat contacting said second end region of said outer jacket tube, said second end region of said at least one inner jacket tube being retained in said sliding seat, said sliding seat being a continuous circumferential bead in said outer jacket tube.
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Accused Products
Abstract
An encased catalyst, especially for motor vehicles, includes at least one metal honeycomb catalyst carrier body through which exhaust gas can pass. At least one inner jacket tube carries the at least one catalyst carrier body. An outer jacket tube approximately concentrically surrounds the at least one inner jacket tube at a distance. The at least one inner jacket tube and the outer jacket tube have end regions and are firmly joined together in one of the end regions. The at least one inner jacket tube is freely longitudinally expandable in the outer jacket tube.
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Citations
39 Claims
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1. A catalytic converter, comprising:
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a) at least one metal honeycomb catalyst carrier body through which exhaust gas can pass; b) at least one inner jacket tube having first and second end regions, said at least one catalyst carrier body being received in said at least one inner jacket tube; c) an outer jacket tube approximately concentrically surrounding said at least one inner jacket tube and having first and second end regions; d) said first end region of said at least one inner jacket tube being firmly joined to said first end region of said outer jacket tube; e) said at least one inner jacket tube being freely longitudinally expandable in said outer jacket tube; and f) a sliding seat contacting said second end region of said outer jacket tube, said second end region of said at least one inner jacket tube being retained in said sliding seat, said sliding seat being a continuous circumferential bead in said outer jacket tube. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A catalytic converter, comprising:
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a) at least one metal honeycomb catalyst carrier body through which exhaust gas can pass; b) at least one inner jacket tube having first and second end regions, said at least one catalyst carrier body being received in said at least one inner jacket tube; c) an outer jacket tube approximately concentrically surrounding said at least one inner jacket tube and having first and second end regions; d) said first end region of said at least one inner jacket tube being firmly joined to said first end region of said outer jacket tube; e) said at least one inner jacket tube being freely longitudinally expandable in said outer jacket tube; and f) a sliding seat contacting said second end region of said outer jacket tube, said second end region of said at least one inner jacket tube being retained in said sliding seat, wherein said sliding seat is formed of individual inner beads in said outer jacket tube.
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9. A catalytic converter, comprising:
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a) at least one metal honeycomb catalyst carrier body through which exhaust gas can pass; b) at least one inner jacket tube having first and second end regions, said at least one catalyst carrier body being received in said at least one inner jacket tube; c) an outer jacket tube approximately concentrically surrounding said at least one inner jacket tube and having first and second end regions; d) said first end region of said at least one inner jacket tube being firmly joined to said first end region of said outer jacket tube; e) said at least one inner jacket tube being freely longitudinally expandable in said outer jacket tube; and f) a sliding seat contacting said second end region of said outer jacket tube, said second end region of said at least one inner jacket tube being retained in said sliding seat.
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10. A catalytic converter, comprising:
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a) at least one metal honeycomb catalyst carrier body through which exhaust gas can pass; b) at least one inner jacket tube formed of ferritic material and having first and second end regions, said at least one catalyst carrier body being received in said at least one inner jacket tube; c) an outer jacket tube approximately concentrically surrounding said at least one inner jacket tube and having first and second end regions; d) said first end region of said at least one inner jacket tube being firmly joined to said first end region of said outer jacket tube; e) said at least one inner jacket tube being freely longitudinally expandable in said outer jacket tube; and f) a sliding seat contacting said second end region of said outer jacket tube, said second end region of said at least one inner jacket tube being retained in said sliding seat.
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11. A catalytic converter, comprising:
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a) a first and second inner jacket tubes each having first and second end regions, and a metal honeycomb catalyst carrier body through which exhaust gas can flow received therein; b) an outer jacket tube approximately concentrically surrounding said first and second inner jacket tubes and having first and second end regions; c) said first end region of said first inner jacket tube being firmly joined to said first end region of said outer jacket tube; d) said first end region of said second inner jacket tube being firmly joined to said second end region of said outer jacket tube; and e) said second end region of said first inner jacket tube and said second end region of said second inner jacket tube being retained one inside the other with a sliding seat for allowing longitudinal expansion of said first and second inner jacket tubes. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A catalytic converter, comprising:
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a) first and second inner jacket tubes each having first and second end regions, and a metal honeycomb carrier body through which exhaust gas can flow received therein; b) an outer jacket tube approximately concentrically surrounding said first and second inner jacket tubes and having first and second end regions; c) said first end region of said first inner jacket tube being firmly joined to said first end region of said outer jacket tube; d) said first end region of said second inner jacket tube being firmly joined to said second end region of said outer jacket tube; and e) at least one of said second end regions of said first and second inner jacket tubes being retained in said outer jacket tube with at least one sliding seat, and wherein said second end regions of said first and second inner jacket tubes are freely longitudinally expandable ends being guided one inside the other with a sliding seat. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification