EP2935854A1 - Air-conducting component of a fresh-air system - Google Patents
Air-conducting component of a fresh-air systemInfo
- Publication number
- EP2935854A1 EP2935854A1 EP13788769.1A EP13788769A EP2935854A1 EP 2935854 A1 EP2935854 A1 EP 2935854A1 EP 13788769 A EP13788769 A EP 13788769A EP 2935854 A1 EP2935854 A1 EP 2935854A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer shell
- shell
- inner shell
- projections
- recesses
- 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- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 10
- 238000013016 damping Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000000295 complement effect Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 210000003739 neck Anatomy 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1277—Reinforcement of walls, e.g. with ribs or laminates; Walls having air gaps or additional sound damping layers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
Definitions
- the present invention relates to an air-conducting component of a fresh air system for an internal combustion engine, in particular of a motor vehicle, having the features of the preamble of claim 1.
- the invention also relates to a fresh air system equipped with such a component.
- Fresh air systems are used to supply an internal combustion engine with fresh air.
- noise from the internal combustion engine can be emitted against the flow direction of the fresh air through the fresh air system.
- high-frequency noise which arise in the region of the compressor, can be emitted to the outside via or through the fresh air system. Accordingly, there is a need to integrate a muffler into such a fresh air system.
- a gas-flow line which can also be used in a fresh air system of a supercharged internal combustion engine. It has a wall for the lateral boundary of an air path leading through the conduit component. This wall has a microperforation for the realization of a sound absorption effect. Microperforation is characterized by openings whose diameter is less than 1 mm.
- Another air-conducting component in the form of a tube is known from EP 1 170 499 A1. Again, a wall to the lateral boundary of the air path leading through the component on a plurality of openings, thereby achieving a sound-absorbing effect.
- a tube for a fresh air system of an internal combustion engine is known, the wall of which is porous, in order to achieve a sound-damping effect.
- a fluid-tight foil is arranged on an inner side of the wall facing the air path, such that the foil has at least 50% no contact with the wall. This creates a gap between the film and the wall, which is fluidly connected via the perforation of the wall with the environment of the tube. Sound waves that are transported in the fresh air path can be transmitted via the elastic film in this space, creating a sound-absorbing effect on the perforation of the wall. At the same time, it is achieved via the film that the tube is fluidly tight towards the surroundings.
- the present invention is concerned with the problem of providing for an air-conducting component of the type described above or for a fresh air system equipped therewith an improved embodiment, which is characterized in particular by a simple structure. In addition, a sound-damping effect to be realized.
- the invention is based on the general idea of designing a double-shelled at least one section of the wall delimiting the air path, so that the respective wall section has an inner shell facing the air path and an outer shell facing away from the air path.
- the inner shell is provided on its side remote from the air path outside with a plurality of outwardly projecting protrusions, between which recesses are present.
- the outer shell is at its the air path facing inside with a plurality of inwardly projecting projections, between which recesses are present.
- the projections of the outer shell engage in the recesses of the inner shell, while at the same time engage the projections of the inner shell in the recesses of the outer shell.
- the air-conducting component can thereby be designed to be particularly self-supporting in a particularly simple manner.
- the bivalve component thus produced can have a high flexural rigidity, so that a tendency to natural vibrations is considerably reduced. Due to the positive connection, structural damping is achieved. This structural damping is achieved by the plurality of contact points between the opposing projections of the adjacent shells, which move relative to each other when subjected to vibration. These minimal movements create a friction damping.
- the component can be produced comparatively easily, wherein the interlocking structures can produce high stability values with comparatively low wall thicknesses.
- the projections of the inner shell taper outward, ie, with increasing distance from the air path, and / or that the depressions of the inner shell expand outward, and / or that the projections of the outer shell inward, so taper with decreasing distance from the air path, and / or that widen the recesses of the outer shell to the inside.
- These geometrical measures mean that the two shells can be assembled particularly easily in order to form the respective wall.
- the two shells can be inserted into one another such that the projections of one shell engage in the depressions of the other shell and vice versa.
- the projections may be configured, for example, conical or pyramidal or frusto-conical or truncated pyramidal.
- the wells of the same shell may also be designed pyramidal or truncated pyramidal. In particular, this allows the recesses of the inner shell to form complementary to the projections of the outer shell and vice versa.
- the inner shell in several or in all wells each have a single or multiple openings which pass through the inner shell to its inner side facing the air path.
- a communicating connection between an intermediate space formed between the inner shell and the outer shell and the air path defined by the wall is created.
- sound waves can thereby penetrate from the air path through the openings into the intermediate space.
- a friction muffler is formed. Depending on the configuration of the gap, this results in a more or less efficient sound attenuation.
- the outer shell has a single or a plurality of openings in all or in all recesses, which pass through the outer shell up to its outer side facing an area surrounding the component. As a result, a permeable perforation of the wall is created overall.
- the inside of the inner shell can be smooth except for the openings.
- the air-conducting component has a particularly low flow resistance.
- the outer side of the outer shell can be smooth except for the openings. This makes it possible in particular to construct the inner shell and outer shell largely identical.
- the projections of the outer shell can engage with the formation of gaps and / or channels between adjacent projections in the recesses of the inner shell, wherein these columns are fluidly connected to the respective opening.
- the gaps that form between the adjacent projections of the outer shell and the inner shell define the gap between inner shell and outer shell.
- the columns and / or channels may also be fluidly connected to the openings of the outer shell.
- both the inner shell and the outer shell have openings in their recesses, it can be provided according to an advantageous embodiment that the projections of one shell engage in the depressions of the other shell to form channels, these channels then each having an opening of the inner shell fluidly connect with an opening of the outer shell.
- These channels may have comparatively small cross-sections, so that while they are permeable to sound, they can be made comparatively pressure-tight due to the internal friction.
- These channels can form a type of microperforation characterized by opening diameters of max. 1 mm.
- Such channels can be realized, for example, that at least in one of two adjacent projections of different shells a recess is provided which is arranged in a shell of the conical or pyramidal projection and extending continuously in the wall thickness direction of the respective wall.
- the respective recess extends in the assembled state of the wall from the respective opening of one shell to the respective opening of the other shell throughout.
- Preferred is a variant in which both projections, which adjoin one another, each have such a recess, which then complement each other in common to the respective channel.
- a cavity between one end or bottom of the respective recess and a tip of engaging in the respective recess projection of the outer shell may be formed in several or in all wells of the inner shell, wherein the respective cavity with the respective opening of the associated Well fluidly connected.
- a cavity between one or more wells of the outer shell End or bottom of the respective recess and a tip of the engaging into the respective recess projection of the inner shell is formed, wherein the cavities are fluidly connected to the respective opening of the outer shell.
- the cavity thus has two openings. One opening connects the cavity to the interior of the air duct, and the other opening connects the cavity to the environment.
- a resonator with two necks is formed.
- an absorption and / or filtration layer can be arranged between the inner shell and the outer shell.
- Such an absorption and / or filtration layer may for example consist of a web-shaped flexible absorption and filter material.
- this may be a nonwoven material, which at the same time serves as an absorbent material and as a filter material due to its structure.
- the wall can be designed to be permeable to air overall, that is to say in particular to have the openings mentioned both on the inner shell and on the outer shell.
- a use on the clean side, ie downstream of an air filter in the fresh air system is also conceivable, since in the case of a false air suction this is filtered through the filtration layer.
- the absorption or filtration layer on the raw air side counteracts a warm air intake, whereby the
- the component can also be used without the use of a filtration layer on the clean side of the fresh air system.
- the component according to the invention can be, for example, a pipe which leads from a fresh air inlet of the fresh air system to an air filter of the fresh air system.
- the component may be a pipe leading from an air filter of the fresh air system to a fresh air manifold of the fresh air system.
- the component may also be a pipe which leads from an air filter of the fresh air system to a compressor of an exhaust gas turbocharger.
- the component may be a housing of an air filter of the fresh air system.
- the component may be a fresh air distributor of the fresh air system.
- a fresh air system according to the invention comprises a plurality of components, namely in particular inlet pipe, an air filter and a fresh air manifold.
- a compressor of an exhaust gas turbocharger may be arranged between the air filter and the fresh air distributor.
- a connecting pipe connects the air filter to the fresh air manifold or to the compressor.
- the component is designed as a tube, may be provided in particular to orient the projections of the inner shell and the outer shell with respect to a longitudinal center axis of the tube radially.
- Fig. 1 is a greatly simplified schematic diagram of a schematic
- FIG. 3 is an interior view of the component according to a viewing direction III in Figure 2,
- an internal combustion engine 1 which is used for example in a vehicle, comprises an engine block 2 which contains a plurality of combustion chambers 3.
- the combustion combustion engine 1 For supplying fresh air to the combustion chambers 3, the combustion combustion engine 1 a fresh air system 4. With the help of an exhaust system 5 combustion exhaust gases are discharged from the combustion chambers 3.
- the fresh air system 4 comprises an inlet pipe 7 open to an environment 6 of the internal combustion engine 1 with a fresh air inlet 43, an air filter 8 with a housing 9 and a filter element 10 arranged therein, a connecting line 11 with an air mass measuring device 12, a compressor 13, an exhaust gas turbocharger 14 and a fresh air manifold 15 with upstream throttle 51.
- the inlet pipe 7 has a fresh air inlet 43 which opens into the environment 6 and connects this fresh air inlet 43 to the air filter 8.
- not all components listed must be present. In particular, could also be dispensed with a throttle device.
- the exhaust system 5 includes an exhaust manifold 16, a turbine 17 of the exhaust gas turbocharger 14 and an exhaust pipe 18, in which the turbine 17 is integrated.
- the exhaust pipe 18 leads to exhaust aftertreatment devices, not shown here, such as mufflers, particulate filters and catalysts.
- Turbine 17 and compressor 13 of the exhaust gas turbocharger 14 are drivingly connected to each other via a common drive shaft 19. For ease of illustration, however, compressor 13 and turbine 17 are arranged offset to one another in FIG.
- At least one of the components of the fresh air system 4, that is a member of the group inlet tube 7, filter housing 9, connecting pipe 1 1 and fresh air manifold 15 may have a bivalve structure, which will be explained in more detail below with particular reference to Figures 2 to 6.
- the bivalve structure is characterized in that the respective component, which is denoted below by 20, has a wall 21, which for the lateral boundary of a through the respective component 20 leading air path 22 and at least in one section is designed clam shell and accordingly has a the air path 22 facing inner shell 23 and facing away from the air path 22 outer shell 24.
- the inlet pipe 7 and a section of the housing 9 of the air filter 8 arranged at the bottom in FIG. 1 are configured as such a component 20 which forms the two-shell wall
- the inner shell 23 at its from the air path
- the outer shell 24 in turn has on a side facing the air path 22 inside 28 a plurality of inwardly projecting conical or frustoconical or pyramidal or pyramidal truncated pyramidal protrusions 29 and interposed recesses 30.
- the projections 29 of the outer shell 24 engage in the recesses 27 of the inner shell 23, wherein at the same time the projections 26 of the inner shell 23 engage in the recesses 30 of the outer shell 24.
- mutually complementary forms of the projections 26, 29 on the one hand and the recesses 27 and 30 on the other hand results in an intensive bond within the wall 21, which leads to a significant stiffening of the respective component 20 and the wall 21.
- the inner shell 23 may expediently have a single opening 31 in all recesses 27, the respective opening 31 passing through the inner shell 23 as far as an inner side 32 of the inner shell 23 facing the air path 22.
- the outer shell 24 can also have a single opening 33 in all recesses 30, which penetrates the outer shell 24 as far as its outer side 34 facing away from the air path 22.
- the inner side 32 of the inner shell 23 is preferably designed to be smooth apart from its openings 31, so that the respective component 21 on its inner side 32 facing the air path 22, the inner side 32 of the inner shell
- the projections 29 of the outer shell 24 can engage in the depressions 27 of the inner shell 23, forming gaps 35.
- the gaps 35 are each formed between adjacent or adjacent projections 29 of the outer shell 24 and projections 26 of the inner shell 23, which engage alternately in the recesses 27 and 30 of the other shell 23, 24.
- the gaps 35 are fluidically connected to the openings 31 of the inner shell 23 and - if present - with the openings 33 of the outer shell 24 or extend into the respective opening 31, 33rd
- the projections 26 of the inner shell 23 extend with their tips 36 each to an end or bottom 37 of the respective recess 30 of the outer shell 24.
- the respective bottom 37 is substantially complete is formed by the associated opening 33, protrude the tips 36 of the projections 26 of the inner shell 23 into the openings 33 of the outer shell 24.
- the projections 29 of the outer shell 24 which protrude with their tips 38 into the openings 31 of the inner shell 23, which form the respective bottom 39 and the respective end of the associated recess 27 in this case.
- the tips 36 of the projections 26 of the inner shell 23 in the openings 33 of the outer shell 24 are flush with the outer side 34 of the outer shell 24.
- the tips 38 of the projections 27 of the outer shell 24 close in the openings 31 of the inner shell 23 with the inner side 32 of the inner shell 23 flush.
- each recesses 27 of the inner shell 23 each have a cavity 40 between the end or bottom 39, so here the opening 31 of the respective recess 27 and the tip 38 of engaging in the respective recess 27 Projection 29 of the outer shell 24 is formed.
- the cavities 40 are in each case fluidically connected to the respective opening 31.
- FIG. 6 shows an embodiment in which an absorption and / or filtration layer 42 is arranged between the inner shell 23 and the outer shell 24.
- the projections 26 of the inner shell 23 and the projections 29 of the outer shell 24 in the gaps 35 on both sides of this absorption and / or filtration layer 42 come to rest. Accordingly, the projections 26, 29 of the two shells 23, 24 are supported indirectly, namely via said absorption and / or filtration layer 42 to each other.
- the absorption and / or filtration layer 42 may be, for example, a sheet-like flexible absorption and / or filter material.
- it may be a gauze or a fabric or a grid or a foam or a nonwoven.
- the absorption effect of the absorption and / or filtration layer 42 is to be understood with regard to acoustic vibrations or with regard to pressure pulsations, so that the absorption material is a sound-absorbing material.
- the intake of hot air from the engine compartment surrounding the pipe is significantly reduced.
- the outer shell 24 may be closed fluidically tight on its side facing away from the air path 22 outside 34, so that then the above-mentioned openings 33 are not present.
- the inner shell 23 has, on its inner side 32, at least one projection 26, a recess 44, which may be frustoconical or pyramidal-shaped, for example.
- all projections 26 may be provided on the inside 32 of the inner shell 23 with such a recess 44.
- the outer shell 24 may have on its outer side 34 at least one recess 45 in the region of a projection 29.
- the respective recess 45 is conical or pyramid-shaped.
- the projections 29 of the outer shell 24 engage in the recesses 27 of the inner shell 23 to form channels 46.
- these channels 46 are each formed between adjacent or adjacent projections 29 of the outer shell 25 and projections 26 of the inner shell 23, which engage alternately in the recesses 27 and 30 of the other shell 23, 24.
- the channels 46 extend continuously from the inner side 32 of the inner shell 23 to the outer side 34 of the outer shell 24.
- the channels 46 thus each extend into an opening 31 of the inner shell 23 and into an opening 33 of the outer shell 24.
- the respective channel 46 thus has an inner opening 47 facing the air path 22 and an outer opening 48 facing away from the air path 22.
- the inner opening 47 lies flush in the inner side 32 of the inner shell 23.
- the outer opening 48 lies flush in the outer side 34 of the outer shell 24.
- the channels 46 are each formed by the fact that the respective projection 29 of the outer shell 24 includes in its shell side a recess 49 which extends from the outer side 34 of the outer shell 24 to the tip 38 of the respective projection 29 through.
- Fig. 7 is for Formation of the respective channel 46
- the respective projection 26 of the inner shell 23 is provided on its jacket with a recess 50 which extends continuously from the inner side 32 of the inner shell 23 to the tip 36 of the respective projection 26.
- the two, opposite recesses 49, 50 then complement each other to the channel 46th
- FIG. 8 shows an alternative embodiment of the air line.
- the shells 23, 24 each have a flat surface and a corrugated surface, the flat surfaces facing outward and the corrugated surfaces of the two shells 23, 24 contacting each other.
- the waves form the projections 26 and 29 and the recesses 27 and 30, respectively.
- the shells 23, 24 lie on each other over their entire surface.
- the inner shell 23 has openings 31 in the region of the depressions 27, which may be formed, for example, as slots or bores.
- the outer shell 24 likewise has openings 33 which are formed as slots 33 ' or as bores 33 " In the left half of the picture, both types of openings 33 are shown by way of example Other openings 33 with different geometries may of course also be provided Component 23, 24 may be formed either a kind of openings 33 or any combination of opening types.
- the air duct differs in that cavities 41 are formed between the shells 23, 24, which are connected via necks to the respective openings 31, 33. Thus, numerous resonators are formed with two necks, which allow an effective sound attenuation.
- FIG. 9 shows a further variant of the air line.
- the inner shell 23 has rounded recesses 27 and projections 26 which penetrate the outer shell 24 and form with this a flat outer surface.
- the outer shell 24 has openings 33 which are formed as slots.
- the recesses 30 of the outer shell 24 open directly into the openings 33.
- the projections 29 have a rounded contour, which engage in the likewise rounded recesses 27 of the inner shell 23.
- the inner shell 23 has no openings 31. In an alternative embodiment, however, such openings 31 may be provided.
- the inner shell 23 may be formed analogously to the described outer shell 24, wherein the outer shell 24 is formed according to the described inner shell 23.
- both shells 23, 24 have openings 31, 33 and recesses 27, 30 which engage in one another such that the projections 26, 29 in openings 31, 33 of the other shell 23, 24 engage and thus form a flat outer surface.
- the openings 31, 33 of the inner shell 23 and the outer shell 24 may be formed according to the embodiments described above.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012221488.7A DE102012221488A1 (en) | 2012-11-23 | 2012-11-23 | Air guiding component of a fresh air system |
PCT/EP2013/073375 WO2014079704A1 (en) | 2012-11-23 | 2013-11-08 | Air-conducting component of a fresh-air system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2935854A1 true EP2935854A1 (en) | 2015-10-28 |
Family
ID=49552373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13788769.1A Withdrawn EP2935854A1 (en) | 2012-11-23 | 2013-11-08 | Air-conducting component of a fresh-air system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2935854A1 (en) |
DE (1) | DE102012221488A1 (en) |
WO (1) | WO2014079704A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU197765U1 (en) * | 2019-11-18 | 2020-05-28 | Публичное акционерное общество "КАМАЗ" | AIR INTAKE DEVICE |
DE102022101107A1 (en) | 2022-01-18 | 2023-07-20 | Woco Industrietechnik Gmbh | Motor vehicle and air duct for conducting room air into or out of a cabin of a motor vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055336A1 (en) * | 2006-11-23 | 2008-05-29 | Federal-Mogul Sealing Systems Gmbh | Protective shield for thermal and acoustical shielding of e.g. turbocharger, has outer layer designed as smooth plate, and inner layer provided with burl structure, where inner and outer layers are held together by flanging edge area |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993513A (en) * | 1988-01-29 | 1991-02-19 | Honda Giken Kogyo Kabushiki Kaisha | Muffler |
DE19607895C2 (en) * | 1996-03-01 | 1999-02-04 | Goesele Karl | Soundproofing board and soundproofing cladding with a soundproofing board |
DE19750102A1 (en) | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gas-flowed line with sound absorption effect |
US6085709A (en) * | 1998-12-10 | 2000-07-11 | Detroit Diesel Corporation | Engine rocker arm cover having reduced noise transmission |
JP3202971B2 (en) * | 1999-03-12 | 2001-08-27 | トヨタ自動車株式会社 | Connection structure of two types of members |
DE10028462A1 (en) * | 1999-06-16 | 2000-12-21 | Hp Chemie Res And Dev Ltd | Underbody insulation for motor vehicle bodies has plastic layer for structure-borne noise insulation connected in friction-connection with underbody |
DE19960427C1 (en) * | 1999-12-15 | 2001-02-08 | Muendener Gummiwerk Gmbh | Hose to carry air from an exhaust gas turbo charger to the motor is of an elastomer material with a chamber section in one piece with the hose to reduce acoustic wave emissions from the hose |
GB2364352A (en) | 2000-07-03 | 2002-01-23 | Draftex Ind Ltd | Noise reduction in air conduits; making perforated conduits |
JP3833909B2 (en) * | 2001-07-11 | 2006-10-18 | 東海ゴム工業株式会社 | Soundproof cover |
US6705268B2 (en) * | 2001-09-21 | 2004-03-16 | Basf Aktiengesellschaft | Engine noise barrier |
US6550440B1 (en) * | 2002-01-17 | 2003-04-22 | Ford Global Technologies, Llc | Acoustic suppression arrangement for a component undergoing induced vibration |
FR2841961B1 (en) | 2002-07-05 | 2004-08-27 | Wecosta | POROUS CONDUIT WITH THIN FILM |
GB2402716B (en) * | 2003-06-10 | 2006-08-16 | Rolls Royce Plc | A damped aerofoil structure |
DE102004028744B3 (en) * | 2004-06-14 | 2005-10-27 | Veritas Ag | silencer |
DE102010010031B4 (en) * | 2010-03-03 | 2015-02-19 | Audi Ag | Housing for a loader and method for suppressing sound |
-
2012
- 2012-11-23 DE DE102012221488.7A patent/DE102012221488A1/en not_active Withdrawn
-
2013
- 2013-11-08 WO PCT/EP2013/073375 patent/WO2014079704A1/en active Application Filing
- 2013-11-08 EP EP13788769.1A patent/EP2935854A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055336A1 (en) * | 2006-11-23 | 2008-05-29 | Federal-Mogul Sealing Systems Gmbh | Protective shield for thermal and acoustical shielding of e.g. turbocharger, has outer layer designed as smooth plate, and inner layer provided with burl structure, where inner and outer layers are held together by flanging edge area |
Non-Patent Citations (1)
Title |
---|
See also references of WO2014079704A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102012221488A1 (en) | 2014-05-28 |
WO2014079704A1 (en) | 2014-05-30 |
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