EP3617469A1 - Couverture en métal fritté - Google Patents

Couverture en métal fritté Download PDF

Info

Publication number
EP3617469A1
EP3617469A1 EP18191155.3A EP18191155A EP3617469A1 EP 3617469 A1 EP3617469 A1 EP 3617469A1 EP 18191155 A EP18191155 A EP 18191155A EP 3617469 A1 EP3617469 A1 EP 3617469A1
Authority
EP
European Patent Office
Prior art keywords
insulation
sinterable
layer
layers
component
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.)
Withdrawn
Application number
EP18191155.3A
Other languages
German (de)
English (en)
Inventor
Jonas Boettcher
Matthias Kroll
Michael Knoll
Christian Eck
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.)
Isolite GmbH
Original Assignee
Isolite GmbH
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 Isolite GmbH filed Critical Isolite GmbH
Priority to EP18191155.3A priority Critical patent/EP3617469A1/fr
Priority to PCT/EP2019/070773 priority patent/WO2020043422A1/fr
Publication of EP3617469A1 publication Critical patent/EP3617469A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/008—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of engine cylinder parts or of piston parts other than piston rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • B22F7/064—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts using an intermediate powder layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • 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
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N3/2867—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 the mats or gaskets being placed at the front or end face of catalyst body
    • 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
    • F01N3/2871—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 the mats or gaskets having an additional, e.g. non-insulating or non-cushioning layer, a metal foil or an adhesive layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/02—Surface coverings for thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
    • F02F1/4257—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels with an intake liner

Definitions

  • the invention relates to a method for producing an insulation component, hereinafter also called a powder blanket, of an insulation system, in particular a sintered insulation component called a sintered metal blanket, and an insulation component for a funnel of a catalytic converter or a particle filter of an exhaust gas system.
  • the specific heat capacity c also called specific heat, results from the normalization of the heat capacity C to the mass of the substance.
  • thermal conduction also called heat diffusion
  • heat radiation is understood to mean a heat flow due to a temperature difference.
  • thermodynamics the direction of flow is always directed from the higher to the lower temperature. Ideally, no thermal energy is lost.
  • heat radiation electromagnetic radiation is emitted from a solid, fluids or plasmas.
  • the emitted radiation power P is proportional to the fourth power of the radiating body, ie P ⁇ T 4 (Stefan-Boltzmann law).
  • heat radiation is the only way to transfer heat energy.
  • Convection or heat transfer is another mechanism for heat transfer.
  • Convection is caused by a current that carries particles.
  • a flowing fluid can absorb or dissipate heat from a surface.
  • Temperature differences can be a cause of the transporting flow.
  • the particle transport is brought about by external influences, for example a blower or a pump.
  • free convection the particle transport is caused by a temperature gradient within the medium.
  • a first example is air gap insulation without convection.
  • air gap insulation without convection there is a self-contained insulation system in which essentially still air is used as the insulation material.
  • An advantage of this type of insulation is the low specific heat capacity of the air. This means that only a small amount of heat can be absorbed by the system. This fact means that with heat-saturated insulation material, i.e. heat-saturated air, most of the heat energy is retained in the system to be insulated. Furthermore, due to the low thermal conductivity of the air, the heat loss through heat conduction is kept very small.
  • a disadvantage of this method is the heat radiation that can affect the surrounding components. Furthermore, only a very small temperature difference beyond the insulation zone is possible.
  • the surface temperature of the insulation system that is, the air is only insignificantly lower than the application temperature, that is to say the temperature of the system to be insulated, for example the exhaust gas component.
  • the application temperature that is to say the temperature of the system to be insulated, for example the exhaust gas component.
  • it can be said about air gap insulation without convection that it offers very good energy conservation in the system to be insulated but does not guarantee adequate protection for surrounding components due to the high surface temperatures.
  • the environment is hardly protected from acoustic emissions.
  • a third example of insulation systems are those in which the insulation material / insulation material is a filler between the system to be insulated and the metal outer shell.
  • these are mostly glass fibers, for example silicate fibers or ceramic fibers, which are applied directly to systems to be insulated. This is currently one of the most used methods in the automotive sector.
  • This isolation method offers the interim solution to the the first two.
  • the advantages are the low surface temperatures with limited installation space and good acoustic absorption through the fiber material.
  • energy conservation in the system to be isolated it is an interim solution. There is no noticeable convection, which is why it is more suitable for energy conservation than heat shield insulation.
  • this system offers a much larger amount of heat to be absorbed than air gap insulation without convection, which in this case means reduced energy conservation.
  • Another disadvantage with regard to energy conservation is the lack of radiation reflection, due to the direct application which only allows heat conduction.
  • this insulation system is the middle ground between the first two systems and is therefore one of the most frequently used methods.
  • silicate fibers, ECR glass fibers or E-glass fibers are used as fillers.
  • Mineral wool or glass wool can also be used.
  • Ceramic fibers are an alternative, but they do not comply with the reach regulation.
  • Regulation (EC) No. 1907/2006 (REACH regulation) is an EU chemicals regulation that entered into force on June 1, 2007.
  • REACH stands for Registration, Evaluation, Authorization and Restriction of Chemicals, i.e. for the registration, evaluation, approval and restriction of chemicals. This makes the use of materials that do not comply with this regulation considerably more difficult. If these materials are used anyway, special requirements are placed on the tightness of the system so that these materials can be blown out of the system.
  • Integral liners or layers are often used for the types of insulation. Their advantages are a low surface temperature, a small space requirement, and a sufficiently good acoustic absorption. However, their disadvantages are that these materials absorb heat in the light-off area.
  • the light-off area or light-off area begins at the temperature at which heat is released by catalytic reactions. Put simply, the light-off temperature denotes the beginning of the temperature range at which catalysts reach the temperature necessary for their efficient function.
  • This object is achieved by a method for producing an insulation component of an insulation system.
  • a powder is mentioned, the process should be understood to mean a powder or powder as a very fine, ground solid in contrast to a granulate which has a particle diameter of more than 1 mm.
  • Granules are rather difficult to use because granules as coarse bulk have too large gaps, and accordingly the density is too small and the contact surfaces are too small to produce a stable green body that is used for this technology.
  • the positioning in step c) can also be seen as an alignment of the insulation material and the sinterable material.
  • the insulation material for example an insulation layer
  • this can be a homogeneous insulation layer made of insulation material and a homogeneous layer made of sinterable material, for example a metal layer.
  • a core made of insulation material is surrounded by sinterable material.
  • the insulation material can be enclosed, that is enclosed, by the sinterable material.
  • step d By pressing in step d), the particles of the sinterable material are pressed closer together. This will fill the gaps between the powder particles of the sinterable material smaller. At the same time, the contact areas of the particles with one another or with one another increase. The pressing thus leads to a cold deformation of the particles of the green compact, in particular before the sintering process.
  • the sinterable material is then melted on these contact surfaces and the crystal structure is regenerated during the cooling process.
  • the sintering achieves a stable, solid jacket geometry that surrounds the core made of insulation material.
  • the insulation component obtained in this way, a sintered metal blanket or insulation blanket has a high temperature resistance and also a high degree of tightness, so that even materials which do not comply with the reach regulation can be used as insulation materials.
  • Other properties include a better thermal conductivity and a possible higher application temperature.
  • the sinterable material may comprise a metallic material or a ceramic material, wherein the metallic material may comprise one or more different, mixed metallic materials; and the insulation material may comprise one or more different mixed insulation materials.
  • additives such as copper, nickel, graphite or lubricants can be added to the mixture of sinterable materials.
  • copper, nickel, graphite or lubricants can be added to the mixture of sinterable materials.
  • zinc powder or zinc powder and fatty acid amide can be used as a lubricant for compacting the powder.
  • the positioning can include that a layer of sinterable material surrounds a layer of insulation material.
  • the layer of metal powder and / or the layer of insulation powder can be homogeneous.
  • a homogeneous layer means an even layer. This is desirable in order to obtain a good result and a uniformly thick layer with the help of or during pressing. This is again desirable in order to design the system appropriately. If, for example, the sintered layer, in particular the sintered metal layer, is thinner at one point, this can lead to problems in operation, for example breakage / leakage / fiber exit. Is the insulation layer in the core not homogeneous or even in terms of thickness and / or density, the insulation effect is accordingly not uniform over the entire surface and so-called hot spots can occur.
  • the pressing in step d) can be carried out at pressures of 4000-10000 bar.
  • the insulation material in a further step c1), can be pre-pressed to form an insulation molding which forms the core of the insulation material, and then in step c) the sinterable material can be positioned with respect to the insulation molding.
  • Other methods can also be used to position the insulation material as a homogeneous filling layer / insulation core in relation to the sinterable material, that is to say the surrounding material.
  • step d) of the method the material which can be sintered with respect to the insulating compact can be pressed with the insulating compact.
  • the insulation compact previously obtained in the first pressing process is used for pressing sinterable material and insulation material.
  • the insulation molding comprises the insulation material.
  • step d) of the method the sinterable material positioned in relation to the insulation material can be pressed directly with the insulation material.
  • This step is an alternative in which the insulation compact mentioned above is not used. In other words, no pre-pressing is carried out, but the pressing, step d) is carried out directly. This can simplify the pressing process.
  • the insulation material can comprise an insulation powder or an insulation mat, and a powder layer for insulation powder can be used for positioning the insulation powder in step c).
  • a powder layer can be used to introduce, ie position, the insulation material in the form of an insulation powder with respect to the sinterable material.
  • the powder layer represents one possibility of realizing a "sandwich structure" made of sinterable material, for example metal powder, and insulation material, for example insulation powder.
  • a printhead can be moved in the x and y directions and thus can be used to provide a surface with a powder image. The z direction is shown by moving the construction table or in this case the powder bed downwards.
  • the insulation material is present as an insulation mat, ie not in powder form, the powder layer can also be used to position the powdery sinterable material.
  • An insulation mat should be understood as a mat-shaped layer made of insulation material.
  • a calibration pressing process of the insulation component can be carried out after the sintering.
  • a calibration pressing process can compensate for material distortion that can arise from the temperatures occurring during the sintering process.
  • the metallic materials can include one or more materials selected from: iron, alloy steel, copper, nickel, and graphite can be used as the filler. However, other metallic materials can also be selected.
  • the insulation materials can be one or more materials selected from: aluminum silicate wool; polycrystalline wool; AES fiber, silicate fiber, and microporous insulation include.
  • the invention further comprises an insulation component produced by the method described above.
  • an internal insulation for example comprising a portliner or a push-in sleeve
  • the inner insulation in particular the portliner or the push-in sleeve, comprising one or more layers, at least one of the layers comprising an insulation component as described above.
  • a funnel of a catalyst or a particle filter is further provided, the funnel comprising one or more layers, at least one of the layers comprising an insulation component as described above.
  • a jacket is provided for an inlet and / or outlet funnel of a catalytic converter or a particle filter, the jacket comprising one or more layers, at least one of the layers comprising an insulation component as described above.
  • the jacket of a catalyst in the area of the catalyst body i.e. without an inlet or outlet funnel, is often already covered by a bearing mat, i.e. a ceramic fiber insulates.
  • a bearing mat i.e. a ceramic fiber insulates.
  • This ceramic fiber bearing mat can often also be used for the insulation of the inlet and outlet funnels, as this could otherwise result in considerable heat losses. Since the material is not Reach-compliant and is classified as harmful to health, blowing out the fiber must be avoided under all circumstances. This usually happens with expensive wire mesh seals, which are introduced at the joints of the catalyst jacket and funnel, as well as the funnel and exhaust pipe.
  • the insulation component described here offers the possibility of tightly enclosing the harmful ceramic fiber material, which is due to the temperatures during the completion process, i.e. during welding or soldering, in a system. This eliminates the need for additional sealing measures.
  • the Fig. 2 shows a schematic view of an insulation component, ie a sintered metal blanket, with the reference number 1 according to the present invention.
  • Fig. 2 shows an upper part 5, an insulation area 3 and a lower part 6.
  • an insulation area 3 In the sectional view in Fig. 2 encloses an upper part 5 and a lower part 6 an insulation area 3.
  • Upper part 5 and lower part 6 are made of sintered material, while insulation area 3 corresponds to an insulation material.
  • the upper part 5 and the corresponding lower part 6 can be positioned in relation to the insulation region 3, that is to say a core made of insulation material, then pressed into a green body and finally sintered to form the insulation component 1 shown.
  • the funnel can comprise one or more layers, at least one of the layers comprising an insulation component or insulation system, as described below.
  • the funnel can also be a funnel of a particle filter, even if only the term catalyst is mentioned below. The requirements for the funnel insulation are practically the same for catalytic converters or particle filters.
  • the Fig. 3 shows an insulation system with a sintered metal blanket 1 according to Fig. 2
  • Fig. 3 shows similar to in Fig. 2 the upper part 5, the insulation region 3 and the lower part 6.
  • a catalytic converter 7 for example an exhaust gas catalytic converter.
  • the sintered metal blanket 1 can thus be plugged onto the existing catalyst 7 at its inlet or outlet funnel 7.1 and thereby fulfill a jacket-like insulation function. It is also possible to replace the entire input or output funnel 7.1 with the sintered metal blanket 1 (not shown).
  • the sintered metal blanket can be mapped in fewer work steps with larger quantities, that is to say automatable.
  • these include, among other things, 1. the mixing of the powdery sinterable material, in particular a metal powder, 2. the positioning or laying of the sinterable material on the one hand and / or the positioning or laying of the insulation material on the other hand, wherein laying the insulation material can be considered if the insulation material is in powder form.
  • the insulation material can be pre-pressed. This is followed by a pressing step, ie cold forming, and finally the sintering takes place, which can optionally be followed by a calibration step.
  • the invention relates to a system in the production of which sinterable material, for example metal powder, is pressed together with insulation material, for example insulation material, to form a green body and is finally further processed in the sintering process to form a solid shell geometry.
  • sinterable material for example metal powder
  • insulation material for example insulation material
  • the sintered metal blanket can have advantages wherever only polycrystalline high-temperature insulation materials come into question due to the operating temperature or processing temperatures. These are in a non-exhaustive list: the manufacture of metal and insulation component in one work step, the production of an insulation system if possible, the processing of materials that do not comply with the reach regulation, in particular due to the good sealing properties of the sintered metal blanket, and the execution as a load-bearing system in the sense of use instead of conventional thick sheet metal cladding in exhaust gas aftertreatment. Temperatures of more than 1000 ° C are possible, especially when manufacturing the system.
  • components subject to high thermal loads are, for example, internal insulation such as port liners or inlet bushes / insertion sleeves for cylinder heads, which in extreme cases can experience temperatures of greater than 1000 ° C. when a vehicle is being operated, for example in sports cars.
  • the Figures 4.1 and 4.2 represent a further example of an insulation component for an application in the context of internal insulation, here a portliner. It is therefore a (short) insulation sleeve for the insulation of an (for example) upper end of a cylinder head.
  • the Fig. 4.1 schematically such an insulation sleeve 110.
  • a cylinder 100 is insulated in a conventional manner with a three-layer insulation consisting of an inner liner 110, which lies directly on the cylinder, an insulating material 104, which rests on the inner liner 110 and an outer liner 106, which rests on the insulating material 104 rests.
  • Typically, only polycrystalline insulation materials are suitable for the insulation material 104.
  • the tightness of the insulation system must be guaranteed. The tightness must be guaranteed here.
  • a modified portliner 10 is shown in contrast to Fig. 4.1.
  • the insulation component according to the present invention is used as an example in the cylinder wall. That is, the cylinder wall of the portliner 10 comprises a cladding layer 15 and an insulation layer 13.
  • the cladding layer 15 is a sintered metal powder sleeve which encloses the insulation layer 13.
  • the insulation component is made from the cladding layer 15 and the insulation layer 13 in accordance with the method described above.
  • Fig. 5.1 schematically shows a conventional catalytic converter 121 in an arrangement 120 with conventional funnel elements 124, the direction of the exhaust gas flow being indicated by an arrow P1 as an example.
  • At least the welds S1, S2, S3, S4, S5, S6, S7, S8, and S9 are necessary for fastening the conventional funnel elements 124 to the catalytic converter 121.
  • four welds are required to close the funnel elements 124, since these typically contain non-reach-compliant insulation materials and blowing out of the insulation material, for example fibers, must be avoided at all costs.
  • Optional seals 122 are also shown.
  • FIG. 5.2 A corresponding catalyst 131 is shown in an arrangement 130, in which the funnel elements are not attached.
  • the direction of the exhaust gas flow is exemplified by an arrow P2.
  • This catalyst can be made from catalyst 121 Fig. 5.1 correspond.
  • This catalyst 131 typically consists of a bearing mat and a wire mesh seal.
  • Fig. 5.3 shows an arrangement 40 in which a catalytic converter 41 can be seen, which uses insulation components as funnel elements 42 in the sense of the powder blanket according to the present invention.
  • the direction of the exhaust gas flow is indicated, for example, by an arrow P3.
  • the funnel element 42 comprises a cladding layer 45 and an insulation layer 43.
  • the cladding layer 45 is a sintered metal powder sleeve which encloses the insulation layer 43.
  • the insulation component that is to say the respective funnel element 42, is produced from the jacket layer 45 and the insulation layer 43 in accordance with the method described above.
  • the (possibly) non-reach-compliant insulation layer material of the insulation layer 43 is completely enclosed, which in any case prevents this material from being blown out.
  • welds S1 ', S2', S3 'and S4' that is to say the fastening points between the catalytic converter 41 and the funnel element 42 to be fitted in a wing-like manner, that is to say the insulation components, to a minimum of four welds S1 ', S2 ', S3' and S4 'are reduced, which therefore also represents a significant machining advantage.
  • Fig. 6 shows a section through a DOHC cylinder head 50.
  • a portliner 51 or an insert sleeve 53 can usually be used here become.
  • the portliner 51 or the insertion sleeve 53 can be insulation components in the sense of the present invention, cf.
  • Figures 4.1 and 4.2 such as Figures 5.1, 5.2 and 5.3 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Exhaust Silencers (AREA)
EP18191155.3A 2018-08-28 2018-08-28 Couverture en métal fritté Withdrawn EP3617469A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18191155.3A EP3617469A1 (fr) 2018-08-28 2018-08-28 Couverture en métal fritté
PCT/EP2019/070773 WO2020043422A1 (fr) 2018-08-28 2019-08-01 Couverture en métal fritté

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18191155.3A EP3617469A1 (fr) 2018-08-28 2018-08-28 Couverture en métal fritté

Publications (1)

Publication Number Publication Date
EP3617469A1 true EP3617469A1 (fr) 2020-03-04

Family

ID=63442459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18191155.3A Withdrawn EP3617469A1 (fr) 2018-08-28 2018-08-28 Couverture en métal fritté

Country Status (2)

Country Link
EP (1) EP3617469A1 (fr)
WO (1) WO2020043422A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073024A2 (fr) * 1981-08-21 1983-03-02 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Paroi stratifiée d'un corps creux et procédé pour sa fabrication
DE102004031431A1 (de) * 2003-07-04 2005-02-17 Hitachi Powdered Metals Co., Ltd., Matsudo Verfahren zur Herstellung von gesinterten Metallkeramik-Schichtpresskörpern und Verfahren zur Herstellung von Puffern zum Abbau von Wärmespannungen
DE102010060071A1 (de) * 2010-10-20 2012-05-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Teil einer Abgasanlage für einen Verbrennungsmotor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073024A2 (fr) * 1981-08-21 1983-03-02 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Paroi stratifiée d'un corps creux et procédé pour sa fabrication
DE102004031431A1 (de) * 2003-07-04 2005-02-17 Hitachi Powdered Metals Co., Ltd., Matsudo Verfahren zur Herstellung von gesinterten Metallkeramik-Schichtpresskörpern und Verfahren zur Herstellung von Puffern zum Abbau von Wärmespannungen
DE102010060071A1 (de) * 2010-10-20 2012-05-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Teil einer Abgasanlage für einen Verbrennungsmotor

Also Published As

Publication number Publication date
WO2020043422A1 (fr) 2020-03-05

Similar Documents

Publication Publication Date Title
EP0494049B1 (fr) Catalyseur et procédé de fabrication d'un catalyseur
EP1047865A1 (fr) Ensemble corps alveolaire presentant une couche intermediaire renfermant au moins une feuille metallique
EP2348205A2 (fr) Corps tubulaire et système d'échappement
DE102010056073A1 (de) Heißkanaldüse
DE10004545A1 (de) Verbund aus Wabenkörper und Wärmespeicher und Verfahren zu dessen Betrieb
DE102017220297A1 (de) Wärmetauscher
EP1831511B1 (fr) Corps alveolaire comprenant au moins une structure alveolaire partiellement ceramique et un element de reception pour un capteur, et procede de production de ce corps alveolaire
EP0229352A1 (fr) Corps catalytique métallique pourvu d'une protection contre la chaleur radiante
DE10334307A1 (de) Isolierte Abgasleitung sowie Verfahren zu ihrer Herstellung
DE3013560C2 (de) Hochofen-Plattenkühler
DE19747257C2 (de) Vorrichtung zur Kapselung von Rohlingen aus metallischen Hochtemperatur-Legierungen
EP3617469A1 (fr) Couverture en métal fritté
DE3020289A1 (de) Waermekuperatoranordnung
DE102021213025A1 (de) Wärmetauschelement, wärmetauscher und wärmeleitendes element
EP0302380B1 (fr) Elément de machine chargé thermiquement
DE1439834A1 (de) Kernbrennstoffelemente
DE69113588T2 (de) Zylinder für Einzel- oder Doppelrollenstranggiessen.
WO2000005063A1 (fr) Procede de production de rouleaux presseurs ou de bandages annulaires ou segments destines a des rouleaux presseurs
EP2866968B1 (fr) Procédé et dispositif de fabrication d'un matériau composite tridimensionnel au moyen d'un corps d'expansion
DE19523954C2 (de) Rohrförmiges Bauteil aus transparentem Quarzglas
EP1551534B1 (fr) Porteur de catalyseur dote d'une couche de passivation et son procede de production
DE7401002U (de) Behälter für Katalysator zur Steuerung und Kontrolle der Abgasemission bei Brennkraftmaschinen
EP1712319B1 (fr) Installation et procédé de fabrication de pièces brasées avec un four à passage continu et une zone de refroidissement statique
DE19813590B4 (de) Abgasbauteil für Brennkraftmaschinen
DE102012205496A1 (de) Thermisch isoliertes Leitungselement und Verfahren zu dessen Herstellung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200905