US3912459A - Catalytic converter - Google Patents

Catalytic converter Download PDF

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Publication number
US3912459A
US3912459A US314511A US31451172A US3912459A US 3912459 A US3912459 A US 3912459A US 314511 A US314511 A US 314511A US 31451172 A US31451172 A US 31451172A US 3912459 A US3912459 A US 3912459A
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US
United States
Prior art keywords
housing
casing
longitudinal
wall surface
support media
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US314511A
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English (en)
Inventor
Walter H Kearsley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Bendix Automotive Electronics Ltd
Bendix Engine Components Ltd
Fram Corp
Original Assignee
Fram Corp
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Filing date
Publication date
Application filed by Fram Corp filed Critical Fram Corp
Priority to US314511A priority Critical patent/US3912459A/en
Priority to JP48138209A priority patent/JPS4989672A/ja
Application granted granted Critical
Publication of US3912459A publication Critical patent/US3912459A/en
Assigned to SIEMENS-BENDIX AUTOMOTIVE ELECTRONICS LIMITED reassignment SIEMENS-BENDIX AUTOMOTIVE ELECTRONICS LIMITED MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: OCT. 1, 1988 Assignors: 67393 ONTARIO LIMITED, BENDIX ELECTRONICS LIMITED, SBAE CANADA HOLDINGS LIMITED
Assigned to BENDIX ENGINE COMPONENTS LIMITED reassignment BENDIX ENGINE COMPONENTS LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE 10-01-85 Assignors: CANADIAN FRAM LIMITED
Assigned to BENDIX ELECTRONICS LIMITED reassignment BENDIX ELECTRONICS LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: 06/02/86 Assignors: BENDIX ENGINE COMPONENTS LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing

Definitions

  • ABSTRACT 2 Filed: 13, 1972 A catalytic converter having an improved suspension Appl. No.: 314,511
  • the housing is retained within a surrounding casing by a resilient support media which restricts transverse movement of the housing relative to the casing.
  • structive longitudinal housing movement is also prevented by the support media in conjunction with the respective shapes of the housing and casing.
  • the casing is strengthened by tapering froma' larger cross-section at the middle to a smaller one at the ends, while the housing is of uniform cross-section throughout.
  • Various other combinations of housing and easing shapes are possible which similarly retard housing movement.
  • FIG. 1 A first figure.
  • This invention relates to the catalytic purification of exhaust gases from an internal combustion engine, and more particularly to apparatus for supporting within a casing a fragile housing for catalyst material against destructive vibrationsboth longitudinal and transverse.
  • a flexible mesh support has been used around the periphery of the catalyst housing to protect it from vibrating against the hardcasing surface during operation. This is especially important at the high temperatures necessary to completely burn the exhaust gases, at which the casing expands transversely away from the catalyst housing. An effective solution to transverse vibration is thus provided, but the usefulness of the system has been considerably limited because longitudinal vibration can still develop.
  • the mesh support While the mesh support also provides some resistence to longitudinal housing motion, it will not prevent the housing from vibrating across any small gap that might exist between it and the sealing rings. If such a gap should be formed, a destructive sequence may be initiated when the automobile is operated; the ceramic housing vibrates against the sealing rings and begins to crumble at the points of contact. The gap widens accordingly, leading to greatervibrations and more housing crumbling, until the mesh support itself wears the housing. Rapid failure of the converter follows.
  • the housing and casing in a catalytic converter of the type described are shaped such that an annular opening is formed therebetween, at least one of said housing and said casing having non-uniform transverse dimensions in longitudinal cross-section. Any longitudinal movement of the housing away from an equilibrium position causes a compression of a portion of the surrounding support media. The compression is translated into a distributed generally transverse force acting upon the housing surface that dampens longitudinal vibrations and restores the housing to equilibrium.
  • the casing is tapered from a larger cross-section in the middle to smaller cross-sections at each end, while the catalyst housing is of uniform cross-sectional dimensions throughout.
  • the support media is compressed into mirror-image generally wedge shapes, of which one wedge is narrowed and compressed by any longitudinal housing displacement and tends to restore the housing to its original position.
  • the casing is rectangular, its side walls may be left untapered, the taper at the top and bottom generally being adequate to prevent undesired motion.
  • the tapered walls are easy to manufacture and provide greater strength than the prior art straight walls.
  • Another object can thus be seen to be the provision of a catalytic converter that can operate under heavy vibrational loading without destruction of the catalyst housing.
  • Still another object is the provision of a catalytic converter with a strengthened casing that eliminates the need'for sealing rings at the catalyst housing.
  • a related object is the provision of a catalytic converter that can be used with sealing rings without destructive longitudinal vibrations against the rings.
  • FIG. 1 is a side elevation, partly in section, showing a tapered casing and straight housing for a catalytic converter in accordance with the invention
  • FIGS. 2 and 3 are sectional views taken respectively along the lines 22 and 3-3 of FIG. 1;
  • FIG. 4 is a side elevation, partly in section, showing a cylindrical embodiment of the invention with a strengthened casing and sealing rings;
  • FIGS. and 6 are views similar to FIG. 1 showing variations in the casing and housing shapes.
  • FIGS. 1 2 and 3 a preferred embodiment of a catalytic converter 10, according to the invention, having an exhaust gas inlet port 12 to receive the exhaust from an internal combustion engine, an outlet 14 leading towards a tail-pipe, and a central metallic casing portion 16.
  • the casing 16 is generally rectangular in cross-section with I/l6 walls, formed from upper and lower sections welded together at flanges 18 running longitudinally along its sides.
  • a boss 20 may be placed along the upper side for securing the converter to the vehicle or machine.
  • An open-ended ceramic housing 22 is located inside and spaced from the inner walls of casing 16 by a resilient support media 26.
  • Catalyst material is mounted on the exposed surfaces of a longitudinally channeled ceramic honeycomb 24, each channel having a gas inlet and outlet. Exhaust gas enters the converter through inlet port 12 and is purified during transit through the channels by contact with the catalyst material contained therein.
  • the support media 26 is a shock absorbant material, capable of withstanding elevated temperature conditions, and is held under compression in non-sliding contact with the exterior housing 22 walls. It may be a corrugated, knitted mesh metallic fabric such as stainless steel that is knitted into a sock and then flattened and crimped at the ends. To prevent slippage relative to the housing 22 the strands of wire mesh dig into the ceramic housing surface, which may also be roughened or corrugated for even greater contact. Spring plates may also be used for the support media 26, with small barbs extending into the ceramic. While it is not necessary that the support media 26 extend all the way around the housing 22, full wrap around facilitates manufacture.
  • the housing 22 extends beyond the support media 26 by approximately A at each end.
  • the casing 16 tapers away from the center at top and bottom at an inward angle of approximately 5,while the housing 22 has straight upper and lower surfaces.
  • the support media 26 is thereby subjected to a lesser compression at the middle and to increasing compression as the extremeties are approached. It in turn exerts a corresponding pressure upon the housing 22.
  • the support media 26 is squeezed into mirror image wedge-like shapes, wide at the middle 28 and narrow at each end, and shields the fragile housing 22 from contact with the metallic casing 16 under transverse vibrations.
  • the housing 22, however, is particularly susceptible to damage if it is allowed to vibrate freely in a longitudinal direction, the ends 30 breaking easily when struck against a hard object. This problem was most acute in previous devices when sealing rings were used to fix a housing in longitudinal position and block exhaust gases from entering the gap between housing and casing. Thermal expansion during operation opened a space across which the housing ends could vibrate onto the sealing rings, ultimately leading to mechanical failure.
  • a taper was provided only on the upper and lower walls of the casing 16.
  • the casing side walls may be manufactured straight across without any taper as shown in FIGS; 2 and 3.
  • the gap between the casing 16 and housing 22 along the sides is preferably a size between that of the smallest and largest gaps provided at the top and bottom.
  • An added benefit of the tapered casing configuration of this invention is a strengthening of the catalytic converter under applied vibrations or load. Extra strength is provided for a casing of given wall thickness against a commonly encountered phenomona known as oil canning, a situation in which a flat steel sheet buckles under vibration or load.
  • FIGS. 4-6 illustrate a few of them.
  • a tapered cylindrical configuration is shown in which a left hand cylinder 34 is welded to a right hand cylinder 36 along flanges 38 at the end of each cylinder.
  • the two cylinders may also be joined by an overlapping arrangement to provide a casing.
  • a cylindrical housing 40 for catalytic material is located inside the casing and protected by support media 26.
  • the casing is tapered as before, with the exception that the tapering extends all the way around.
  • a plurality of hollow strengthening ribs 44 are provided on the surface on the casing 16 to enhance structural durability and provide recesses 46 which carry portions of the support media 26 and furtherengage it to the casing. If sealing rings 48 are desired they may conveniently be provided adjacent the annular opening at each end of the housing 40, with arms 50 extending orthogonally from the rings and cemented between the housing 40 and the support media 26.
  • FIG. 5 shows another variation in which both a casing 52 and a housing 54 are provided with similarly tapered walls forming a V-shaped annular gap of substantially constant thickness for support media 26.
  • the compression on the housing 54 is essentially constant along its length. and increases uniformly when the housing is moved to the left or right. While this arrangement provides the most widely distributed transverse force, the housing 54 shown is somewhat more difficult to manufacture than one of uniform thickness throughout.
  • FIG. 6 another embodiment is shown in which a straight housing 56 is surrounded by a casing 58 that is also straight at its mid-section and tapered only at the ends. Because it extends over a lesser distance, the angle of taper is somewhat greater and assists against slippage between the casing 58 and support media 60.
  • a further advantage is found in those embodiments in which the support media is compressed by a constriction in the gap near the ends of a catalyst housing.
  • the support media may be compressed to a degree sufficient to prevent the entrance of exhaust gases between the casing and housing, thus permitting the converter to be operated with no sealing rings at all; exhaust gases will all flow through the catalyst housing to be treated. lfsealing rings are desired, they may be provided as shown in FIG. 4.
  • a catalytic converter for exhaust gases of the type having a casing with an internal wall surface and gas inlet and outlet openings at its respective ends, a fragile housing interior to said casing in the line of exhaust gas flow having exhaust gas passages extending longitudinally between and in communication with said inlet and outlet openings and containing catalyst material, said housing having an exterior longitudinal wall surface and being longitudinally movable with respect to said casing, a resilient support media between and engaging the exterior longitudinal wall surface of said housing and the interior wall surface of said casing to support said housing within said casing and limit relative movement therebetween, the improvement comprising the exterior wall surface of said housing and the opposing interior wall surface of said casing sloping relative to each other in one direction along one longitudinal portion of said converter, and in the opposite direction along another portion of said converter to form therebetween an annular opening having oppositely tapered portions, said support media being lodged in compression in said annular opening, between and in contact with said sloping interior and exterior wall surfaces, said relatively sloping walls and said tapered opening therebetween extending
  • a catalytic converter for exhaust gases of the type having a casing with an internal wall surface and gas inlet and outlet openings at its respective ends, a fragile housing interior to said casing in the line of exhaust gas flow having exhaust gas passages extending longitudinally between and in communication with said inlet and outlet openings and containing catalyst material, said housing having an exterior longitudinal wall surface and being longitudinally movable with respect to said casing, a resilient support media between and engaging the exterior longitudinal wall surface of said housing and the interior wall surface of said casing to support said housing within said casing and limit relative movement therebetween, the improvement conprising the exterior wall surface of said housing and the opposing interior wall surface of said casing sloping parallel to each other in one direction along one longitudinal portion of said converter and in the opposite direction along another longitudinal portion of said converter to form therebetween an annular opening with oppositely sloping longitudinal portions, said support media being lodged in compression in said annular opening, between and in contact with said sloping interior and exterior wall surfaces, whereby a portion of said support media is subject

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
US314511A 1972-12-13 1972-12-13 Catalytic converter Expired - Lifetime US3912459A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US314511A US3912459A (en) 1972-12-13 1972-12-13 Catalytic converter
JP48138209A JPS4989672A (Direct) 1972-12-13 1973-12-13

Applications Claiming Priority (1)

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US314511A US3912459A (en) 1972-12-13 1972-12-13 Catalytic converter

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978567A (en) * 1973-03-19 1976-09-07 Chrysler Corporation Method of making a catalytic reactor for automobile
US4020539A (en) * 1973-03-19 1977-05-03 Chrysler Corporation Catalytic reactor for automobile
US4049388A (en) * 1976-07-12 1977-09-20 Arvin Industries, Inc. Center air manifold for catalytic converter
US4070158A (en) * 1974-07-16 1978-01-24 Volkswagenwerk Aktiengesellschaft Catalyst for catalytic purification of exhaust gases
US4072007A (en) * 1976-03-03 1978-02-07 Westinghouse Electric Corporation Gas turbine combustor employing plural catalytic stages
US4148120A (en) * 1974-07-16 1979-04-10 Volkswagenwerk Aktiengesellschaft Method of manufacturing a catalyst for catalytic purification of exhaust gases
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
FR2415199A1 (fr) * 1978-01-19 1979-08-17 Eberspaecher J Pot d'echappement avec bloc de catalyseur
FR2422030A1 (fr) * 1978-04-08 1979-11-02 Fuji Heavy Ind Ltd Dispositif d'epuration des gaz d'echappement des moteurs a combustion interne
US4206178A (en) * 1978-04-08 1980-06-03 Fuji Jukogyo Kabushiki Kaisha Apparatus for purifying exhaust gases of internal combustion engines
US4208374A (en) * 1977-10-31 1980-06-17 General Motors Corporation Catalytic converter
US4209494A (en) * 1978-04-08 1980-06-24 Fuji Jukogyo Kabushiki Kaisha Catalytic converter for purifying exhaust gases of internal combustion engines
US4215093A (en) * 1978-05-22 1980-07-29 Fuji Jukogyo Kabushiki Kaisha Catalytic converter
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
US4335078A (en) * 1977-09-13 1982-06-15 Nissan Motor Company, Limited Catalytic reactor for automotive exhaust line
US4353872A (en) * 1980-03-07 1982-10-12 Nissan Motor Co., Ltd. Catalytic converter
US4462812A (en) * 1982-12-08 1984-07-31 General Motors Corporation Ceramic monolith particulate trap including filter support
US4617176A (en) * 1984-09-13 1986-10-14 Minnesota Mining And Manufacturing Company Catalytic converter for automotive exhaust system
US4698213A (en) * 1982-09-07 1987-10-06 Toyota Joshida Kabushiki Kaisha Exhaust gas purifier with resistant circumferential sealing member between monolith catalyst and casing
FR2660966A1 (fr) * 1990-04-13 1991-10-18 Gilardini Spa Convertisseur catalytique pour vehicules, en particulier pour vehicules automobiles.
US5879640A (en) * 1995-08-16 1999-03-09 Northrop Grumman Corporation Ceramic catalytic converter
WO1999028604A1 (de) * 1997-12-03 1999-06-10 Leistritz Ag & Co. Abgastechnik Abgaskatalysator, insbesondere für kraftfahrzeuge und verfahren zu seiner herstellung
US20020071791A1 (en) * 2000-12-13 2002-06-13 Foster Michael Ralph Catalytic converter
US20020076362A1 (en) * 2000-12-15 2002-06-20 Hardesty Jeffrey B. Exhaust manifold with catalytic converter shell tube
FR2830048A1 (fr) * 2001-09-21 2003-03-28 Faurecia Sys Echappement Catalyseur pour filtration de gaz d'echappement et son procede de fabrication
US20030175178A1 (en) * 2002-03-12 2003-09-18 Leon Mazurets Chisto
US20040258583A1 (en) * 2003-06-18 2004-12-23 Hardesty Jeffrey B. Apparatus and method for manufacturing a catalytic converter
US20060228273A1 (en) * 2005-04-06 2006-10-12 Caterpillar Inc. Exhaust element retaining assembly
US7587819B1 (en) * 2002-12-23 2009-09-15 Hall Jr Herbert L Insert for a catalytic converter and method and apparatus for forming an insert for a catalytic converter
WO2018017848A1 (en) * 2016-07-21 2018-01-25 Cummins Emission Solutions Inc. Polygonal substrate housings and assemblies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441381A (en) * 1965-06-22 1969-04-29 Engelhard Ind Inc Apparatus for purifying exhaust gases of an internal combustion engine
US3534547A (en) * 1967-05-22 1970-10-20 Sanitized Ag Method and apparatus for decontamination of exhaust gases from internal combustion engines
US3692497A (en) * 1971-05-20 1972-09-19 Engelhard Min & Chem Catalytic exhaust gas treatment apparatus
US3801289A (en) * 1972-05-19 1974-04-02 Corning Glass Works Catalytic converter
US3817714A (en) * 1972-10-10 1974-06-18 Corning Glass Works Catalytic converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441381A (en) * 1965-06-22 1969-04-29 Engelhard Ind Inc Apparatus for purifying exhaust gases of an internal combustion engine
US3534547A (en) * 1967-05-22 1970-10-20 Sanitized Ag Method and apparatus for decontamination of exhaust gases from internal combustion engines
US3692497A (en) * 1971-05-20 1972-09-19 Engelhard Min & Chem Catalytic exhaust gas treatment apparatus
US3801289A (en) * 1972-05-19 1974-04-02 Corning Glass Works Catalytic converter
US3817714A (en) * 1972-10-10 1974-06-18 Corning Glass Works Catalytic converter

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978567A (en) * 1973-03-19 1976-09-07 Chrysler Corporation Method of making a catalytic reactor for automobile
US4020539A (en) * 1973-03-19 1977-05-03 Chrysler Corporation Catalytic reactor for automobile
US4070158A (en) * 1974-07-16 1978-01-24 Volkswagenwerk Aktiengesellschaft Catalyst for catalytic purification of exhaust gases
US4148120A (en) * 1974-07-16 1979-04-10 Volkswagenwerk Aktiengesellschaft Method of manufacturing a catalyst for catalytic purification of exhaust gases
US4072007A (en) * 1976-03-03 1978-02-07 Westinghouse Electric Corporation Gas turbine combustor employing plural catalytic stages
US4049388A (en) * 1976-07-12 1977-09-20 Arvin Industries, Inc. Center air manifold for catalytic converter
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
US4335078A (en) * 1977-09-13 1982-06-15 Nissan Motor Company, Limited Catalytic reactor for automotive exhaust line
US4208374A (en) * 1977-10-31 1980-06-17 General Motors Corporation Catalytic converter
FR2415199A1 (fr) * 1978-01-19 1979-08-17 Eberspaecher J Pot d'echappement avec bloc de catalyseur
FR2422030A1 (fr) * 1978-04-08 1979-11-02 Fuji Heavy Ind Ltd Dispositif d'epuration des gaz d'echappement des moteurs a combustion interne
US4206179A (en) * 1978-04-08 1980-06-03 Fuji Jukogyo Kabushiki Kaisha Apparatus for purifying exhaust gases of internal combustion engines
US4206178A (en) * 1978-04-08 1980-06-03 Fuji Jukogyo Kabushiki Kaisha Apparatus for purifying exhaust gases of internal combustion engines
US4209494A (en) * 1978-04-08 1980-06-24 Fuji Jukogyo Kabushiki Kaisha Catalytic converter for purifying exhaust gases of internal combustion engines
US4215093A (en) * 1978-05-22 1980-07-29 Fuji Jukogyo Kabushiki Kaisha Catalytic converter
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
US4353872A (en) * 1980-03-07 1982-10-12 Nissan Motor Co., Ltd. Catalytic converter
US4698213A (en) * 1982-09-07 1987-10-06 Toyota Joshida Kabushiki Kaisha Exhaust gas purifier with resistant circumferential sealing member between monolith catalyst and casing
US4462812A (en) * 1982-12-08 1984-07-31 General Motors Corporation Ceramic monolith particulate trap including filter support
US4617176A (en) * 1984-09-13 1986-10-14 Minnesota Mining And Manufacturing Company Catalytic converter for automotive exhaust system
FR2660966A1 (fr) * 1990-04-13 1991-10-18 Gilardini Spa Convertisseur catalytique pour vehicules, en particulier pour vehicules automobiles.
ES2043480A1 (es) * 1990-04-13 1993-12-16 Gilardini Spa Convertidor catalitico para vehiculos, en particular autovehiculos.
US5879640A (en) * 1995-08-16 1999-03-09 Northrop Grumman Corporation Ceramic catalytic converter
US6077600A (en) * 1995-08-16 2000-06-20 Grumman Corporation Ceramic catalytic converter
WO1999028604A1 (de) * 1997-12-03 1999-06-10 Leistritz Ag & Co. Abgastechnik Abgaskatalysator, insbesondere für kraftfahrzeuge und verfahren zu seiner herstellung
US6824744B1 (en) 1997-12-03 2004-11-30 Faurecia Abgastechnik Gmbh Catalytic converter, especially for motor vehicles, and method for the production thereof
US20020071791A1 (en) * 2000-12-13 2002-06-13 Foster Michael Ralph Catalytic converter
US7241426B2 (en) 2000-12-15 2007-07-10 Delphi Technologies, Inc. Exhaust manifold with catalytic converter shell tube
US20020076362A1 (en) * 2000-12-15 2002-06-20 Hardesty Jeffrey B. Exhaust manifold with catalytic converter shell tube
FR2830048A1 (fr) * 2001-09-21 2003-03-28 Faurecia Sys Echappement Catalyseur pour filtration de gaz d'echappement et son procede de fabrication
WO2003027455A1 (fr) * 2001-09-21 2003-04-03 Faurecia Systemes D'echappement Catalyseur pour purification de gaz d'echappement et son procede de fabrication
US20030175178A1 (en) * 2002-03-12 2003-09-18 Leon Mazurets Chisto
US6923943B2 (en) * 2002-03-12 2005-08-02 Leon Mazurets Exhaust catalytic converter/muffler
US7587819B1 (en) * 2002-12-23 2009-09-15 Hall Jr Herbert L Insert for a catalytic converter and method and apparatus for forming an insert for a catalytic converter
US20040258583A1 (en) * 2003-06-18 2004-12-23 Hardesty Jeffrey B. Apparatus and method for manufacturing a catalytic converter
US20070271786A1 (en) * 2003-06-18 2007-11-29 Delphi Technologies, Inc. Apparatus and method for manufacturing a catalytic converter
US7462332B2 (en) * 2003-06-18 2008-12-09 Delphi Technologies, Inc. Apparatus and method for manufacturing a catalytic converter
US20060228273A1 (en) * 2005-04-06 2006-10-12 Caterpillar Inc. Exhaust element retaining assembly
WO2018017848A1 (en) * 2016-07-21 2018-01-25 Cummins Emission Solutions Inc. Polygonal substrate housings and assemblies
US11534718B2 (en) 2016-07-21 2022-12-27 Cummins Emission Solutions Inc. Polygonal substrate housings and assemblies

Also Published As

Publication number Publication date
JPS4989672A (Direct) 1974-08-27

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