Patent US318369A successfully refreshed from Google Patents.
Patent US3899303A successfully refreshed from Google Patents.
US3899303A
Expired / Lapsed
US
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Apparatus for the catalytic purification of exhaust gases of internal combustion engines
Assignee: Eberspaecher Climate Control Systems GmbH and Co KG
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Filing: 1973-03-05
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Granted: 1975-08-12
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Expires: 1993-03-05
Abstract
Abstract An apparatus for purifying exhaust gases of internal combustion engines comprises a housing which has an intermediate chamber which is filled with catalytic material and a chamber on each side thereof which communicate with the catalytic chamber through perforated walls. The intermediate catalytic chamber connects to a central dome-like extension providing a filling opening for additional catalytic material. An exhaust gas conduit connects into the chamber on one side of the catalytic material chamber and terminates at the inlet to an inspiration tube having a narrow throat inlet at the discharge of the exhaust conduit within the housing and which has a diverging nozzle portion or diffusor section which discharges into the other chamber. The housing includes means for deflecting the exhaust gases backwardly through the catalytic material of the catalytic material chamber for flow subsequently out through an exhaust connection. Supplemental air is introduced into the apparatus preferably between a double wall formation of the housing so that the air is preheated and then delivered to a location for flow through the inlet of the inspiration tube under the induced flow conditions which are set up by the discharge of the exhaust gases into the inlet.
Inventors
- 👤 Gerhard Gaysert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:16
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01N3/306; F01N3/28; F01N3/2839; F01N3/2846; F01N3/2882; F01N3/2885; F01N3/34; F01N13/00; F01N13/14; F01N2240/00; F01N2240/02; F01N2330/00; F01N2330/08; F01N2450/00; F01N2450/04; F01N2470/00; F01N2470/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
315 words
AN APPARATUS FOR PURIFYING EXHAUST GASES, COMPRISING A HOUSING HAVING AN INTERMEDIATE CATALYTIC MATERIAL CHAMBER WITH A FIRST CHAMBER AND A SECOND MIXING AND REVERSING CHAMBER ON RESPECTIVE SIDES THEREOF, FIRST AND SECOND PERFORATED PARTITIONS IN SAID HOUSING ON EACH SIDE OF SAID CATALYTIC MATERIAL CHAMBER DIVIDING SAID INTERMEDIATE CHAMBER FROM SAID FIRST AND SECOND CHAMBERS BUT PERMITTING THE FLOW OF GASES THERETHROUGH, AN ASPIRATION TUBE HAVING AN INLET LOCATED IN SAID FIRST CHAMBER AND EXTENDING THROUGH SAID CATALYTIC MATERIAL CHAMBER INTO SAID SECOND CHAMBER FOR THE FLOW OF EXHAUST GASES FROM SAID FIRST CHAMBER INTO SAID SECOND CHAMBER, AN EXHAUST GAS DISCHARGE TERMINATING ADJACENT SAID ASPIRATION AND HAVING A DISCHARGE TERMINATING ADJACENT SAID ASPIRATION TUBE INLET LEAVING A COMBUSTION AIR FLOW SPACE BETWEEN SAID EXHAUST GAS DELIVERY PIPE AND SAID ASPIRATION TBE FOR THE INFLOW OF AIR ALONG WITH THE EXHAUST GASES, MEANS TO DEFLECT THE EXHAUST GASES AND AIR BACKWARDLY FROM SAID SECOND CHAMBER BACK THROUGH SAID CATALYTIC CHAMBER FOR TREATMENT IN SAID CATALYTIC CHAMBER AND FOR FLOW TO SAID FIRST CHAMBER, A GAS DISCHARGE IN SAID FIRST CHAMBER FOR THE DISCHARGE OF THE TREATED EXHAUST GASES, WALL MEANS CONNECTED TO SAID ASPIRATION TUBE INLET AND DIVIDING SAID FIRST CHAMBER INTO AN EXHAUST CHAMBER WHICH IS ADJACENT SAID INTERMEDIATE CHAMBER AND CONNECTED TO SAID GAS DISCHARGE, A THIRD PERFORATED PARTITION SPACED FROM SAID WALL MEANS, AN INLET CHAMBER LOCATED BETWEEN SAID THIRD PERFORATED PARTITION AND SAID WALL MEANS, AND COMBUSTION AIR SUPPLY MEANS TO SUPPLY COMBUSTION AIR THROUGH SAID THIRD PERFORATED PARTITION INTO SAID INLET CHAMBER, SAID EXHAUST GASES IN THEIR PASSAGE FROM SAID EXHAUST GAS DELIVERY PIPE INTO SAID ASPIRATION TUBE INLET BEING COOLED BY THE COMBUSTION AIR AND ACTING TO DRAW THE COMBUSTION AIR INTO SAID INLET SAID THROUGH SAID ASPIRATION TUBE FOR FLOW THERETHROUGH AND INTO SAID SECOND MIXING AND REVERSING CHAMBER AND THEN BACKWARDLY THROUGH SAID CATALYTIC MATERIAL CHAMBER.
Claim 2
Independent Claim
315 words
AN APPARATUS FOR PURIFYING EXHAUST GASES, COMPRISING A HOUSING HAVING AN INTERMEDIATE CATALYTIC MATERIAL CHAMBER WITH A FIRST CHAMBER AND A SECOND MIXING AND REVERSING CHAMBER ON RESPECTIVE SIDES THEREOF, FIRST AND SECOND PERFORATED PARTITIONS IN SAID HOUSING ON EACH SIDE OF SAID CATALYTIC MATERIAL CHAMBER DIVIDING SAID INTERMEDIATE CHAMBER FROM SAID FIRST AND SECOND CHAMBERS BUT PERMITTING THE FLOW OF GASES THERETHROUGH, AN ASPIRATION TUBE HAVING AN INLET LOCATED IN SAID FIRST CHAMBER AND EXTENDING THROUGH SAID CATALYTIC MATERIAL CHAMBER INTO SAID SECOND CHAMBER FOR THE FLOW OF EXHAUST GASES FROM SAID FIRST CHAMBER INTO SAID SECOND CHAMBER, AN EXHAUST GAS DISCHARGE TERMINATING ADJACENT SAID ASPIRATION AND HAVING A DISCHARGE TERMINATING ADJACENT SAID ASPIRATION TUBE INLET LEAVING A COMBUSTION AIR FLOW SPACE BETWEEN SAID EXHAUST GAS DELIVERY PIPE AND SAID ASPIRATION TBE FOR THE INFLOW OF AIR ALONG WITH THE EXHAUST GASES, MEANS TO DEFLECT THE EXHAUST GASES AND AIR BACKWARDLY FROM SAID SECOND CHAMBER BACK THROUGH SAID CATALYTIC CHAMBER FOR TREATMENT IN SAID CATALYTIC CHAMBER AND FOR FLOW TO SAID FIRST CHAMBER, A GAS DISCHARGE IN SAID FIRST CHAMBER FOR THE DISCHARGE OF THE TREATED EXHAUST GASES, WALL MEANS CONNECTED TO SAID ASPIRATION TUBE INLET AND DIVIDING SAID FIRST CHAMBER INTO AN EXHAUST CHAMBER WHICH IS ADJACENT SAID INTERMEDIATE CHAMBER AND CONNECTED TO SAID GAS DISCHARGE, A THIRD PERFORATED PARTITION SPACED FROM SAID WALL MEANS, AN INLET CHAMBER LOCATED BETWEEN SAID THIRD PERFORATED PARTITION AND SAID WALL MEANS, AND COMBUSTION AIR SUPPLY MEANS TO SUPPLY COMBUSTION AIR THROUGH SAID THIRD PERFORATED PARTITION INTO SAID INLET CHAMBER, SAID EXHAUST GASES IN THEIR PASSAGE FROM SAID EXHAUST GAS DELIVERY PIPE INTO SAID ASPIRATION TUBE INLET BEING COOLED BY THE COMBUSTION AIR AND ACTING TO DRAW THE COMBUSTION AIR INTO SAID INLET SAID THROUGH SAID ASPIRATION TUBE FOR FLOW THERETHROUGH AND INTO SAID SECOND MIXING AND REVERSING CHAMBER AND THEN BACKWARDLY THROUGH SAID CATALYTIC MATERIAL CHAMBER.
Claim 3
Dependent Claim
34 words
An apparatus for purifying exhaust gases, according to claim 1, including a reserve connection for catalytic material connecting into said catalytic material chamber, said reverse connection forming a filler neck for the catalyst mass.
Claim 4
Dependent Claim
107 words
An apparatus for purifying exhaust gases, according to claim 1, wherein said housing includes an extension connected into said catalytic material chamber forming a reserve supply dome for the catalyst material, said housing being of double-wall construction around said supply dome and said housing being of double-wall construction to define an annular space around said chambers which communicates with the annular space of said dome, said housing having an inlet for combustion air into the annular space adjacent said second chamber, said dome also having an inlet for combustion air adjacent the top of said dome, the combustion air communicating with the inlet of said aspiration tube.
Claim 5
Dependent Claim
79 words
An apparatus for purifying exhaust gases, according to claim 1, wherein said exhaust gas pipe includes a horizontal portion, and a short pipe of a smaller diameter than said horizontal portion of said exhaust pipe extending through said exhaust pipe and terminating with the discharge in the plane of the discharge of the exhaust pipe on one end and having an opposite end extending into said inlet chamber, said short pipe also defining a passage for the combustion air.
Claim 6
Dependent Claim
45 words
An apparatus for purifying exhaust gases according to claim 1, wherein said housing includes inner and outer walls forming an annular space therebetween communicating with said combustion air flow space, and an inlet opening connected to said annular space for the inflow of combustion air.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |