WO2014081375A1 - Système de montage d'une unité d'épuration des gaz d'échappement - Google Patents

Système de montage d'une unité d'épuration des gaz d'échappement Download PDF

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Publication number
WO2014081375A1
WO2014081375A1 PCT/SE2013/051349 SE2013051349W WO2014081375A1 WO 2014081375 A1 WO2014081375 A1 WO 2014081375A1 SE 2013051349 W SE2013051349 W SE 2013051349W WO 2014081375 A1 WO2014081375 A1 WO 2014081375A1
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WO
WIPO (PCT)
Prior art keywords
exhaust
cleaning unit
resilient
exhaust cleaning
arrangement
Prior art date
Application number
PCT/SE2013/051349
Other languages
English (en)
Inventor
Ragnar Bucksch
Göran GRANQVIST
Original Assignee
Scania Cv Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Publication of WO2014081375A1 publication Critical patent/WO2014081375A1/fr

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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
    • F01N3/2875—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/04—Fitting ceramic monoliths in a metallic housing with means compensating thermal expansion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to the field of exhaust cleaning systems and in particular to the fitting of interchangeable exhaust cleaning units.
  • filters and catalysts contain coated substrates which it is very desirable to be able to remove, inter alia because they are expensive and it is desirable to be able to clean them with a view to reuse.
  • the substrates in the various units also become used up over different periods of time and it is desirable to be able to replace them independently of one another.
  • Wall flow filters become full of ash over time, creating large backpressures, and need to be replaceable as a servicing operation. It is desirable that other catalysts be replaceable as a repair operation. It is difficult, however, to design for replaceability.
  • Substrates are usually built into the silencer and several tight joints have to be created for it to be possible to remove the substrates.
  • a catalyst may for example be welded into the silencer and not be replaceable.
  • the whole silencer has to be replaced. If the joints are not tight, external and internal leakage may occur. External leakage from the silencer may damage surrounding equipment items which are sensitive to hot exhaust gases. Internal leakage leads to the exhaust gases going through the system without passing the substrates, in which case the vehicle will no longer meet the tough requirements concerning emissions. How good the internal tightness needs to be varies depending on the particular substrate concerned. Substrates used in filters and catalysts are subject during manufacture to various tolerances due to tool wear, variations in process parameters etc. The external dimensions of substrates therefore vary, which has to be taken into account when fitting them.
  • US-201 1/0042546-A1 describes a way of fitting an exhaust component in an exhaust pipe, using a spring strip and a plurality of spring fingers which protrude from the strip.
  • the strip and the fingers are manufactured integrally.
  • the fingers provide greater radial rigidity which counteracts vibration movements and prevents the exhaust system from reaching resonance.
  • the configuration of the fingers also facilitates fitting in that they are deformable when the exhaust component is being fitted in the exhaust pipe.
  • US-201 1/0042546-A1 defines metal material for the strip and the fingers.
  • the object of the invention is to propose an alternative arrangement which makes it possible to fit an exhaust component in an exhaust pipe at lower cost than in prior art.
  • the object is achieved with an arrangement for fitting an exhaust cleaning unit in an exhaust passage according to the first independent claim.
  • the arrangement comprises a plurality of resilient units each provided with a first fastening element adapted to being fastened to the exhaust cleaning unit.
  • Each resilient unit further comprises a first contact portion adapted to coming into contact with a wall surface which delineates the exhaust passage.
  • the resilient units are further adapted to being fastened round the exhaust cleaning unit at fixed locations in which the first contact portion on the respective resilient unit is at a radial distance from the first fastening element.
  • the fastening elements may be so configured that they can be fastened directly to an edge of the exhaust cleaning unit or to an annular element round the exhaust cleaning unit. Expensive spring steel may thus be saved, since the resilient units and any annular elements used may be made of different materials.
  • the heat treatment of the resilient units may also be more effective because they are not so large.
  • the invention may be used on various different kinds of exhaust cleaning units and render them replaceable at lower cost than in other currently known concepts. Placing the resilient units suitably spread out round the exhaust cleaning unit makes it possible for them to keep it in a centred position in the exhaust passage and to avoid obliquity of the exhaust cleaning unit during its fitting and removal.
  • the exhaust cleaning unit need not be kept in any particular position during fitting but can easily be pushed into the exhaust passage, since the resilient units provide assurance that the exhaust cleaning unit will not come into direct contact with the wall surface which delineates the exhaust passage.
  • the resilient units thus each have a first contact portion situated at a radial distance from the first fastening element.
  • a resilient unit may therefore have an external surface which is at a progressively increasing radial distance from the first fastening element when the resilient unit is fastened to the exhaust cleaning unit.
  • the resilient unit may then be pressed together during fitting and removal and also be adaptable to different sizes of exhaust cleaning units.
  • the resilient units each have a second fastening element adapted to being fastened to the exhaust cleaning unit. These second fastening elements may likewise be so configured that they can be fastened directly to a second edge of the exhaust cleaning unit or to a further annular element round the exhaust cleaning unit.
  • the resilient units are corrugated and each have a second contact portion adapted to coming into account with the exhaust cleaning unit.
  • a plurality of contact portions makes it possible for the arrangement to be used for larger applications, e.g. a longer exhaust cleaning unit, and still to provide assurance of fitting and removal of the exhaust cleaning unit without its suffering damage.
  • a plurality of contact portions also makes it possible for the
  • the resilient units each have a third contact portion adapted to coming into contact with a wall surface which delineates the exhaust passage.
  • the resilient units may also have further contact portions as above.
  • first and/or second fastening elements take the form of clips adapted to being fastened to respective first and second edges of the exhaust cleaning unit.
  • Using clips results in great freedom to configure the remainder of the exhaust system in any desired way, since the clips will not occupy so much space and will be easy to move as necessary.
  • a resilient unit with clips provides the system with more elasticity through not having to use an annular element to provide a certain rigidity.
  • a larger intermediate space between the exhaust cleaning unit and the wall surface which delineates the passage may be occupied, since the resilient units with clips each provide a better resilient characteristic than if they are linked together via annular elements.
  • the resilient units are fastened via their first and/or second fastening elements to respective first and second annular elements arranged to extend substantially round the whole exhaust cleaning unit.
  • the resilient units may therefore be fastened either to just one annular element or to two.
  • the annular elements may be made of less expensive material, since they do not need resilient characteristics.
  • the first and/or second annular elements are provided with closely fitting recesses for the fastening elements in order to keep the latter at fixed locations.
  • an uneven number of the resilient units are with advantage placed round an exhaust cleaning unit at a uniform distance from one another to ensure centred placing of the exhaust cleaning unit. It is for example possible to use 3, 5, 7, 9, 1 1 , 13 or 15 resilient units.
  • the exhaust cleaning unit is a particle filter unit.
  • the exhaust cleaning unit may be provided with an oxidation catalyst or an SCR catalyst.
  • the object is achieved by an exhaust cleaning unit provided with an arrangement herein described.
  • the object is achieved by an exhaust system in which an exhaust cleaning unit is fitted in an exhaust passage in the exhaust system with an arrangement herein described.
  • the exhaust system may also comprise two or more exhaust cleaning units fitted in an exhaust passage in the exhaust system with different arrangements.
  • the exhaust system may for example be provided with a silencer in which the one or more exhaust cleaning units may be fitted.
  • the wall surface which delineates the exhaust passage may have inward bulges towards the middle of the exhaust passage which are adapted to meeting a corresponding contact portion on one or more resilient units. The bulges may be separate or run along the whole circumference of the wall surface. They may form a calibrated inside surface of the wall surface, resulting in an assured fit against the resilient units.
  • Fig. 1 depicts a freight vehicle with an exhaust system.
  • Fig. 2 depicts an example of a silencer with units for cleaning of exhaust gases.
  • Fig. 3 depicts two fitted exhaust cleaning units provided with different
  • Fig. 4 depicts an arrangement according to an embodiment of the invention.
  • Fig. 5 depicts an enlarged resilient unit used for example in the arrangement in Fig. 4.
  • Fig. 6 depicts an enlarged view of an interface between two exhaust cleaning units.
  • Fig. 7 depicts an exhaust cleaning unit with arrangements according to an embodiment of the invention.
  • Fig. 8 depicts an enlarged view of a resilient unit according to an embodiment of the invention.
  • Fig. 9 depicts part of a cross-sectional view of a fitted exhaust cleaning unit with an arrangement according to an embodiment of the invention.
  • Fig. 1 depicts schematically a freight vehicle 1 with a combustion engine 2, in this case a diesel engine. Exhaust gases from the engine are led away from it via an exhaust system 3.
  • the exhaust system comprises a first exhaust line 5 and, connected thereto, an exhaust silencer 4 with an exhaust inlet 8 and an exhaust outlet 9, and a second exhaust line 6 leading out from the silencer.
  • the exhaust gases are led through the first exhaust line 5 from an exhaust outlet 7 of the engine to the silencer's exhaust inlet 8 and through the second exhaust line 6 from the silencer's exhaust outlet 9 to the atmosphere which surrounds the vehicle.
  • the vehicle's exhaust system may further comprise one or more here undepicted silencers and exhaust post-treatment systems which are with advantage, but are not necessarily, situated upstream of, or integrated in, the exhaust silencer 4.
  • Fig. 2 depicts in more detail an example of an exhaust post-treatment system 10 fitted with three exhaust cleaning units 13, although it might have a smaller or larger number of them.
  • the system comprises for each exhaust cleaning unit 13 a pipe 1 1 which delineates an exhaust passage 12 with an inlet aperture and an outlet aperture for the exhaust gases.
  • the exhaust gases reach the inlet aperture and leave the outlet aperture via so-called turning chambers.
  • a turning chamber is a kind of pipe or line which for example conveys the exhaust gases from an exhaust inlet 8 depicted in Fig. 1 to an inlet aperture of an exhaust passage 12.
  • the drawing is slightly cut away to make it possible to see into the exhaust post- treatment system.
  • the exhaust cleaning units 13 may for example be an oxidation catalyst, an SCR (selective catalytic reduction) catalyst and/or a wall flow filter.
  • An exhaust cleaning unit may in one embodiment be a particle filter unit.
  • the exhaust cleaning units contain substrates which are sensitive to external influences and are therefore provided with a tubular sleeve 14 made for example of steel.
  • the exhaust cleaning units may be provided with gripping means (not depicted) which can be gripped with tools to make it possible to move the exhaust cleaning units into and out of the exhaust passages 12.
  • Fig. 3 depicts an exhaust passage 12 in the exhaust post-treatment system 10 depicted in Fig. 2.
  • the exhaust passage is here fitted with two exhaust cleaning units 13.
  • the exhaust passage has an inlet 15 and an outlet 16.
  • the inlet is here provided with a fitting hatch 17 and may also have further closures to seal the exhaust passage against leakage of exhaust gases from the exhaust post- treatment system. There is however room for example for turning chambers between the exhaust cleaning unit 13 and the fitting hatch 17 to guide exhaust gases to desired locations.
  • the diagram shows two different arrangements 18 for fitting the exhaust cleaning units 13. It has the pipe 1 1 partly cut away to make it possible to illustrate the arrangements 18.
  • the exhaust passage 12 is delineated by a wall surface 19 which is here the inside of the pipe 1 1 .
  • the exhaust cleaning units are kept apart by various stops 20 fastened to the exhaust cleaning unit which is situated on the right in the diagram.
  • the arrangement 18 on the right in Fig. 3 is provided with a plurality of resilient units 21 each comprising a first fastening element 22 and a second fastening element 23 which are adapted to being fastened to the exhaust cleaning unit 13.
  • These fastening elements are each situated at their respective end of the resilient units. In one embodiment they take the form of clips adapted to being fastened to respective first and second edges of the exhaust cleaning unit. The clips will be explained in more detail below.
  • Each resilient unit 21 has a first contact portion 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage. As may be seen in the diagram, the resilient units have also a second contact portion 25 adapted to coming into contact with the exhaust cleaning unit. In a further embodiment depicted in the drawing, the resilient units have a third contact portion 26 adapted into coming into contact with the wall surface 19 which delineates the exhaust passage.
  • the arrangement 18 depicted on the left in Fig. 3 will now be explained with reference to an exposed depiction of it in Fig. 4.
  • the arrangement in Fig. 4 is provided with resilient units 21 which each have at one end a first fastening element 22.
  • the fastening elements 22 are adapted to being fastened to the exhaust cleaning unit 13.
  • the resilient units 21 are here adapted to being fastened via their first fastening elements to a first annular element 27 which is arranged to extend round substantially the whole exhaust cleaning unit.
  • the resilient units also have at a second end a second fastening element 23 which can be fastened to a second annular element 28 which is arranged to extend round substantially the whole exhaust cleaning unit.
  • the first and second annular elements 27 and 28 are provided with closely fitting first and second recesses 29 and 30 for the fastening elements 22 and 23 in order to keep the latter at fixed locations.
  • the first fastening elements 22 constitute in conjunction with the first recesses 29 a form of snap lock.
  • the second annular element 28 is here provided with a gap 31 to simplify the fitting of the arrangement 18 on the exhaust cleaning unit 13. This gap also makes it possible to adapt the second annular element to different sizes of exhaust cleaning units.
  • the first annular element 27 may also be provided with a gap.
  • the resilient units 21 each have a fastening element adapted to being placed round an annular element and thereby to being kept firmly at fixed locations round the exhaust cleaning unit.
  • Fig. 5 depicts a resilient unit 21 intended to be fitted to the respective first and/or second annular elements 27 and 28 depicted in Fig. 4.
  • the diagram shows the first fastening element 22 provided with an upwardly protruding middle portion 33 adapted to being inserted in a closely fitting first recess 29 (Fig. 4) for the first fastening element to keep the latter at a fixed location.
  • the upwardly protruding portion 33 is with advantage made of flexible material.
  • the first fastening element 22 is thus inserted into the first recess 29 through a lateral aperture, the upwardly protruding portion 33 being pressed down while being inserted in order thereafter to come up through the first recess so that the first fastening element is firmly seated.
  • the second fastening element 23 on the opposite side from the first fastening element 22 is adapted to being inserted in the closely fitting second recess 30 (Fig. 4) for the first fastening element 22 to keep the latter at a fixed location.
  • the resilient unit 21 is here depicted with a first contact portion 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage 12. When the resilient unit 21 is fitted on an exhaust cleaning unit 13, the first contact portion 24 extends from the first fastening element 22 and the second fastening element 23 in an increasing radial direction.
  • the resilient unit is here shown with a contact portion 24 adapted to coming into contact with the wall surface which delineates the exhaust passage, but may be provided with a plurality of contact portions adapted to coming into contact with the wall surface which delineates the exhaust passage.
  • the resilient unit 21 in one embodiment is substantially corrugated. It may in one embodiment have a second contact portion 25 adapted to coming into contact with the exhaust cleaning unit. It may also have a plurality of contact portions adapted to coming into contact with the exhaust cleaning unit.
  • Fig. 6 depicts an example of two arrangements 18 for fitting two exhaust cleaning units.
  • the exhaust cleaning unit 13 on the left in the diagram is here provided with an arrangement 18 comprising a plurality of resilient units 21 each having a first fastening element 22 adapted to being inserted in closely fitting first recesses 29 in order to keep the resilient units at fixed locations.
  • the first fastening element and the closely fitting first recess 29 constitute a kind of snap solution described previously with reference to Figs. 4 and 5.
  • the resilient unit 21 has here only one first fastening element 22.
  • the resilient units are here adapted to being fastened via their first fastening elements 22 to a first annular element 27 which is arranged to extend round substantially the whole exhaust cleaning unit 13.
  • the resilient unit 21 in Fig. 6 has a first contact portion 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage 12.
  • This resilient unit may likewise have a plurality of contact portions adapted to coming into contact with the wall surface which delineates the exhaust passage, and/or a plurality of contact portions adapted to coming into contact with the exhaust cleaning unit 13.
  • the resilient units 21 in one embodiment are substantially corrugated.
  • the resilient units in one embodiment each have a second contact portion 25 adapted to coming into contact with the exhaust cleaning unit.
  • the first annular element 27 is here provided with a gap 31 .
  • Fig. 6 depicts also a further exhaust cleaning unit 13 situated on the right in the diagram and fitted with a stop 20, e.g. by welding.
  • the left exhaust cleaning unit 13 has at its end a calibrated surface 34 and an adjacent edge 35 against which the stop 20 can abut. A predetermined distance may thus be maintained between the two exhaust cleaning units.
  • the stop 20 has along one end first recesses 29 in which matching first fastening elements 22 on resilient units 21 can be fastened.
  • the diagram shows two resilient units on the stop 20 but there might instead be only one resilient unit or more than two. A plurality of stops 20 are with advantage placed round the exhaust cleaning unit.
  • the exhaust cleaning unit may thus be kept centred in the exhaust passage 12 by the resilient units 21 .
  • the resilient units have first contact portions 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage, and second contact portions 25 adapted in this case to being in contact with the stop's upper surface 36.
  • Fig. 7 depicts an exhaust cleaning unit 13 provided with an arrangement 18 according to a further embodiment of the invention.
  • the exhaust cleaning unit is here provided with stops 20 whose function is as described above.
  • the arrangement 18 is provided with a plurality of resilient units 21 which will be described with reference to Fig. 8.
  • Fig. 8 depicts an exposed resilient unit 21 from Fig. 7. It comprises a first fastening element 22 adapted to being fastened to the exhaust cleaning unit 13 in Fig. 7.
  • This first fastening element takes the form of a clip adapted to being fastened to an edge of the exhaust cleaning unit.
  • the resilient unit 21 is thus clamped firmly to an edge of the exhaust cleaning unit and is kept in place by compressive force between two sides of the resilient unit.
  • the first fastening element 22 may be provided with barbs 37 to enable it to be securely fastened to an edge.
  • the resilient unit has a first contact portion 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage 12.
  • the resilient unit is adapted to being fastened round the exhaust cleaning unit at fixed locations in which the first contact portion 24 on the resilient unit is at a radial distance from the first fastening element 22.
  • the resilient unit in one embodiment is corrugated. It may also have a second contact portion 25 adapted to coming into contact with the exhaust cleaning unit when the resilient unit is being fitted.
  • a plurality of resilient units are fastened round an annular element which extends round the exhaust cleaning unit.
  • Fig. 9 depicts a resilient unit 21 in cross-section, when being fitted on the exhaust cleaning unit 13 which is inserted in the exhaust passage 12.
  • the parts illustrated in this diagram are applicable in all the embodiments herein cited.
  • the resilient unit here has a first fastening element 22 adapted to being fastened to the exhaust cleaning unit.
  • the fastening element may for example be fastened to the exhaust cleaning unit via a first annular element 27 or be firmly welded or bonded or be fastened in some other way herein described to the exhaust cleaning unit.
  • the resilient unit has a first contact portion 24 adapted to coming into contact with the wall surface 19 which delineates the exhaust passage 12.
  • the wall surface is an inside surface of for example the pipe 1 1 depicted in Fig. 2. In the fixed position depicted in Fig.
  • the first contact portion 24 on the resilient unit 21 is thus at a radial distance from the first fastening element 22.
  • the resilient unit is corrugated.
  • the resilient unit may have a second contact portion 25 adapted to coming into contact with the exhaust cleaning unit.
  • the first contact portion 24 is substantially halfway between the first fastening element 22 and the second contact portion 25.
  • the second contact portion 25 is at a radially progressively decreasing distance from the first contact portion 24.
  • the resilient unit 21 may have a plurality of contact portions adapted to coming into contact with the wall surface which delineates the exhaust passage or to coming into contact with the exhaust cleaning unit.
  • the contact portions are at radial spacing from one another. Fig.
  • the gasket in one embodiment is annular and extends round the whole exhaust cleaning unit.
  • the first fastening element 22 is here fastened to the exhaust cleaning unit on a calibrated surface 39 of the latter.
  • the calibrated surface has a predetermined radius.
  • the resilient unit 21 preferably starts from this calibrated surface 29, making it possible to ensure that the resilient unit does in a desired way come into contact with the wall surface which delineates the exhaust passage.
  • the gasket is preferably also placed on the calibrated surface of the exhaust cleaning unit. Resilient units 21 which centre the exhaust cleaning unit in the exhaust passage prevent gasket wear and make it possible to maintain a tight closure.
  • the resilient units 21 herein described may for example be made of spring steel.
  • the present invention is not restricted to the embodiments described. Various alternatives, modifications and equivalents may be used. The aforesaid embodiments therefore do not limit the invention's scope which is defined by the attached claims.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention concerne un système de montage d'une unité d'épuration des gaz d'échappement dans un conduit d'échappement, ledit système comprenant une pluralité d'unités élastiques respectivement dotées d'un premier élément de fixation conçu pou être fixé à l'unité d'épuration des gaz d'échappement, chaque unité élastique comportant également une première partie de contact conçue pour venir en contact avec une surface de paroi délimitant le conduit d'échappement. Les unités élastiques sont fixées autour de l'unité d'épuration des gaz d'échappement en des emplacements fixes dans lesquels la première partie de contact de chaque unité élastique se trouve à une certaine distance radiale du premier élément de fixation. L'invention concerne également une unité d'épuration des gaz d'échappement pourvue d'un système, et un système d'échappement pourvu d'une unité d'épuration des gaz d'échappement.
PCT/SE2013/051349 2012-11-22 2013-11-18 Système de montage d'une unité d'épuration des gaz d'échappement WO2014081375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1251321A SE536757C2 (sv) 2012-11-22 2012-11-22 Arrangemang för att montera en avgasrenande enhet
SE1251321-4 2012-11-22

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WO2014081375A1 true WO2014081375A1 (fr) 2014-05-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098405A1 (fr) * 2015-05-27 2016-11-30 Eberspächer Exhaust Technology GmbH & Co. KG Dispositif de traitement des gaz d'echappement comprenant un insert amovible
EP3772574A1 (fr) * 2019-08-08 2021-02-10 Eberspächer Exhaust Technology GmbH Module de traitement des gaz d'échappement

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Publication number Priority date Publication date Assignee Title
US20040156761A1 (en) * 2001-08-02 2004-08-12 Brueck Rolf Honeycomb assembly having a honeycomb body with an expansion-compensating mounting, especially for an exhaust-gas catalytic converter
US20050002836A1 (en) * 2001-04-13 2005-01-06 Hardesty Jeffrey B. Gas treatment device, and methods of making and using the same
US20100024407A1 (en) * 2008-07-31 2010-02-04 Caterpillar Inc. Emissions control filter assembly and system
US20110042546A1 (en) * 2009-08-24 2011-02-24 International Engine Intellectual Property Company, Llc Mount for exhaust system components
EP2460985A1 (fr) * 2010-12-06 2012-06-06 Mann + Hummel GmbH Unité de filtre pour le post-traitement de gaz d'échappement de moteurs à combustion interne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050002836A1 (en) * 2001-04-13 2005-01-06 Hardesty Jeffrey B. Gas treatment device, and methods of making and using the same
US20040156761A1 (en) * 2001-08-02 2004-08-12 Brueck Rolf Honeycomb assembly having a honeycomb body with an expansion-compensating mounting, especially for an exhaust-gas catalytic converter
US20100024407A1 (en) * 2008-07-31 2010-02-04 Caterpillar Inc. Emissions control filter assembly and system
US20110042546A1 (en) * 2009-08-24 2011-02-24 International Engine Intellectual Property Company, Llc Mount for exhaust system components
EP2460985A1 (fr) * 2010-12-06 2012-06-06 Mann + Hummel GmbH Unité de filtre pour le post-traitement de gaz d'échappement de moteurs à combustion interne

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098405A1 (fr) * 2015-05-27 2016-11-30 Eberspächer Exhaust Technology GmbH & Co. KG Dispositif de traitement des gaz d'echappement comprenant un insert amovible
CN106194379A (zh) * 2015-05-27 2016-12-07 埃贝赫排气技术有限两合公司 带有可更换插件的废气处理装置
CN106194379B (zh) * 2015-05-27 2019-12-03 埃贝赫排气技术有限两合公司 带有可更换插件的废气处理装置
EP3772574A1 (fr) * 2019-08-08 2021-02-10 Eberspächer Exhaust Technology GmbH Module de traitement des gaz d'échappement
US11536179B2 (en) 2019-08-08 2022-12-27 Purem GmbH Exhaust gas treatment assembly unit

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SE536757C2 (sv) 2014-07-15

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