FR2941902A1 - Acoustic and thermal protection device for protecting e.g. turbine casing, from exhaust line in motor vehicle, has stiffening element for stiffening portion of flexible laminate, where other portion of laminate forms flexible portion - Google Patents
Acoustic and thermal protection device for protecting e.g. turbine casing, from exhaust line in motor vehicle, has stiffening element for stiffening portion of flexible laminate, where other portion of laminate forms flexible portion Download PDFInfo
- Publication number
- FR2941902A1 FR2941902A1 FR0900563A FR0900563A FR2941902A1 FR 2941902 A1 FR2941902 A1 FR 2941902A1 FR 0900563 A FR0900563 A FR 0900563A FR 0900563 A FR0900563 A FR 0900563A FR 2941902 A1 FR2941902 A1 FR 2941902A1
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- FR
- France
- Prior art keywords
- complex
- laminate
- shell
- flexible
- stiffening
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0884—Insulating elements, e.g. for sound insulation for mounting around noise sources, e.g. air blowers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Laminated Bodies (AREA)
Abstract
Description
1 L'invention concerne un dispositif de protection acoustique et thermique vis à vis d'une source sonore et chaude disposée dans un véhicule automobile et un montage comprenant un tel dispositif et une telle source. The invention relates to a device for acoustic and thermal protection vis-à-vis a sound source and hot disposed in a motor vehicle and an assembly comprising such a device and such a source.
Il est connu, notamment du document FR 2 906 204, de réaliser un dispositif de protection acoustique et thermique vis à vis d'une source sonore et chaude disposée dans un véhicule automobile, ledit dispositif étant réalisé à base d'un complexe souple, ledit complexe comprenant une couche absorbante à base de fibres, une couche de protection interne poreuse et une couche de protection externe étanche. It is known, in particular from document FR 2 906 204, to provide an acoustic and thermal protection device with respect to a sound and hot source disposed in a motor vehicle, said device being made based on a flexible complex, said complex comprising a fiber-based absorbent layer, a porous inner protective layer and a sealed outer protective layer.
Un tel dispositif peut, du fait de sa souplesse, être difficile à monter autour de la source sonore et chaude. Such a device may, because of its flexibility, be difficult to mount around the sound source and hot.
En particulier, il peut être difficile d'obtenir un bon positionnement d'une bouche d'admission d'air prévue dans le dispositif. In particular, it may be difficult to obtain a good positioning of an air intake mouth provided in the device.
Par ailleurs, il peut être souhaité que le dispositif soit localement monté à distance de la source, ceci afin d'éviter un phénomène de points chauds sur 20 ladite source. Moreover, it may be desired that the device be locally mounted at a distance from the source, in order to avoid a phenomenon of hot spots on said source.
L'invention a pour but de pallier ces inconvénients. The invention aims to overcome these disadvantages.
A cet effet, et selon un premier aspect, l'invention propose un dispositif de 25 protection acoustique et thermique vis à vis d'une source sonore et chaude disposée dans un véhicule automobile, ledit dispositif comprenant un premier complexe souple, ledit premier complexe comprenant une couche absorbante, une couche de protection interne poreuse et une couche de protection externe étanche, ledit dispositif comprenant en outre un élément de raidissement d'une 30 partie dudit complexe, l'autre partie formant partie souple. For this purpose, and according to a first aspect, the invention proposes a device for acoustic and thermal protection with respect to a sound and hot source disposed in a motor vehicle, said device comprising a first flexible complex, said first complex comprising an absorbent layer, a porous inner protective layer and a sealed outer protective layer, said device further comprising a stiffening member of a portion of said complex, the other flexible portion.
Un tel agencement confère localement au premier complexe une rigidité permettant de faciliter le montage et le bon positionnement du dispositif, et 2 permet aussi que ledit dispositif soit localement monté à distance de la source sonore et chaude. Such an arrangement locally confers on the first complex rigidity to facilitate assembly and good positioning of the device, and 2 also allows said device is locally mounted at a distance from the sound source and hot.
Selon un deuxième aspect, l'invention propose un montage comprenant une 5 source sonore et chaude et un tel dispositif. According to a second aspect, the invention proposes a mounting comprising a sound and hot source and such a device.
D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures jointes dans lesquelles : • la figure 1 est une représentation schématique en coupe d'un montage 10 comprenant un dispositif selon une première réalisation, • la figure 2 est une représentation schématique en coupe d'un dispositif selon une deuxième réalisation, • la figure 3 est une représentation schématique en coupe d'un dispositif selon une troisième réalisation. 15 En référence aux figures, on décrit un dispositif 1 de protection acoustique et thermique vis à vis d'une source 2 sonore et chaude disposée dans un véhicule automobile, ledit dispositif comprenant un premier complexe 3 souple, ledit premier complexe comprenant, comme représenté en figure 1, une couche 20 absorbante 4, une couche de protection interne 5 ûdestinée à être disposée en regard de ladite source -, ladite couche interne étant poreuse afin de permettre le passage des ondes sonores au sein de ladite couche absorbante pour réaliser une absorption sonore, et une couche de protection externe 6 étanche - notamment sous forme de feuille métallique de type aluminium ou de tissu 25 enduit par une substance de type silicone - ledit dispositif comprenant en outre un élément 7 de raidissement d'une partie dudit complexe, l'autre partie formant partie souple 10. Other features and advantages of the invention will become apparent from the description which follows, with reference to the appended figures in which: FIG. 1 is a diagrammatic representation in section of an assembly comprising a device according to a first embodiment; Figure 2 is a schematic sectional representation of a device according to a second embodiment, • Figure 3 is a schematic sectional representation of a device according to a third embodiment. Referring to the figures, there is described a device 1 for acoustic and thermal protection with respect to a sound and hot source 2 disposed in a motor vehicle, said device comprising a first complex 3 flexible, said first complex comprising, as shown in FIG. 1, an absorbent layer 4, an inner protective layer 5 intended to be disposed facing said source, said inner layer being porous so as to allow sound waves to pass through said absorbent layer to achieve sound absorption. , and an outer protective layer 6 sealed - especially in the form of aluminum-type metal foil or tissue coated with a silicone-like substance - said device further comprising an element 7 for stiffening a part of said complex, the other flexible portion 10.
La couche absorbante 4 est notamment à base de fibres de verre. 30 La couche de protection interne 5 est notamment à base de tissu de verre ou de silice. Absorbent layer 4 is especially based on glass fibers. The inner protective layer 5 is especially based on glass fabric or silica.
L'étanchéité de la couche de protection externe 6 apporte notamment une protection à l'égard des fluides tels que l'essence, l'huile ou l'eau. The tightness of the outer protective layer 6 provides particular protection against fluids such as gasoline, oil or water.
La couche de protection interne 5 vise à réaliser notamment une protection 5 contre l'abrasion. The inner protection layer 5 is intended to provide, in particular, protection against abrasion.
Selon une réalisation, l'élément 7 comprend une couche de matériau fibreux 8 - notamment à base de fibre de verre - lié par un liant û notamment à base de résine phénolique. Selon une réalisation, la couche de matériau fibreux 8 présente une densité variable. According to one embodiment, the element 7 comprises a layer of fibrous material 8 - in particular based on glass fiber - bonded with a binder - in particular based on phenolic resin. In one embodiment, the layer of fibrous material 8 has a variable density.
En particulier, on peut prévoir, de façon non représentée, au moins une zone de 15 forte densité et de rigidité importante, obtenue notamment par compression à chaud, et au moins une zone de faible densité, présentant une porosité apte à réaliser de l'absorption acoustique. In particular, at least one zone of high density and high rigidity, obtained in particular by hot compression, and at least one zone of low density, having a porosity capable of producing sound absorption.
Il peut être notamment prévu plusieurs zones de forte densité formant un 20 réseau de nervures. In particular, several zones of high density can be provided, forming a network of ribs.
Selon les réalisations des figures 1 et 2, l'élément 7 est sous la forme d'une coque 9. According to the embodiments of FIGS. 1 and 2, the element 7 is in the form of a shell 9.
25 Selon la réalisation de la figure 1, le premier complexe 3 s'étend sur tout l'envers de la coque 9 en dépassant de ladite coque pour former la partie souple 10. According to the embodiment of Figure 1, the first complex 3 extends over the entire back of the shell 9 protruding from said shell to form the flexible portion 10.
Selon la réalisation de la figure 2, le premier complexe 3 et la coque 9 sont 30 associés par deux bords respectifs dans le prolongement l'un de l'autre, afin de réaliser un raidissement du bord dudit premier complexe. 10 4 Par ailleurs, un patch 11 de deuxième complexe 12 est en outre associé en envers de la coque 9, ledit deuxième complexe comprenant une deuxième couche absorbante 13 à base de fibres, une deuxième couche de protection interne 14 û destinée à être disposée en regard de la source 2 et à réaliser notamment une protection contre l'abrasion û, ladite couche de protection interne étant poreuse, et une deuxième couche de protection externe 15. According to the embodiment of Figure 2, the first complex 3 and the shell 9 are associated by two respective edges in the extension of one another, in order to achieve a stiffening of the edge of said first complex. Moreover, a patch 11 of the second complex 12 is further associated in reverse of the shell 9, said second complex comprising a second fiber-based absorbent layer 13, a second internal protective layer 14 intended to be disposed in view of the source 2 and in particular to provide protection against abrasion û, said inner protective layer being porous, and a second outer protective layer 15.
Un patch 11, au sens de la présente description, est un format de deuxième complexe 12 de taille inférieure à celle de la coque 9 et ne dépassant pas latéralement de cette dernière. A patch 11, within the meaning of the present description, is a format of second complex 12 smaller than that of the shell 9 and not projecting laterally thereof.
La deuxième couche de protection externe 15 - réalisée notamment à base de tissu de verre -permet de garantir l'intégrité du patch 11 avant son association à la coque 9. La deuxième couche de protection externe 15 étant protégée par la coque 9, il n'est pas utile qu'elle soit étanche. Selon la réalisation de la figure 3, l'élément 7 est sous la forme d'une bande 20 recouvrant partiellement le premier complexe 3. Selon les réalisations représentées, l'élément 7 est associé au premier 3 et/ou deuxième 12 complexe par des rivets 16. D'autres moyens d'associations peuvent toutefois être employés. Selon la réalisation de la figure 1, l'élément 7 comprend au moins une ouverture 17 d'admission d'air. Une telle ouverture 17 peut bien entendu être prévue dans les autres 30 réalisations. On décrit à présent un montage 18 comprenant une source 2 sonore et chaude et un dispositif 1, ledit dispositif comprenant au moins une zone plaquée 19 25 contre ladite source et au moins une zone écartée 20 de ladite source, afin d'éviter les point chauds qui peuvent notamment entraîner un mauvais fonctionnement du catalyseur et du corps de turbine lorsque la source chaude est une ligne d'échappement.5 The second outer protective layer 15 - made in particular based on glass fabric - ensures the integrity of the patch 11 before its association with the shell 9. The second outer protective layer 15 being protected by the shell 9, it It is not useful for it to be waterproof. According to the embodiment of FIG. 3, the element 7 is in the form of a strip 20 partially covering the first complex 3. According to the embodiments represented, the element 7 is associated with the first 3 and / or second complex 12 by rivets 16. Other means of association may, however, be used. According to the embodiment of Figure 1, the element 7 comprises at least one opening 17 of air intake. Such an opening 17 may of course be provided in the other embodiments. An assembly 18 comprising a sound and hot source 2 and a device 1 is now described, said device comprising at least one plated zone 19 against said source and at least one zone 20 separated from said source, in order to avoid hot spots. which can in particular cause a malfunction of the catalyst and the turbine body when the hot source is an exhaust line.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0900563A FR2941902B1 (en) | 2009-02-09 | 2009-02-09 | ACOUSTIC AND THERMAL PROTECTIVE DEVICE WITH RESPECT TO A SOUND, HOT SOURCE ARRANGED IN A MOTOR VEHICLE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0900563A FR2941902B1 (en) | 2009-02-09 | 2009-02-09 | ACOUSTIC AND THERMAL PROTECTIVE DEVICE WITH RESPECT TO A SOUND, HOT SOURCE ARRANGED IN A MOTOR VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2941902A1 true FR2941902A1 (en) | 2010-08-13 |
| FR2941902B1 FR2941902B1 (en) | 2011-04-08 |
Family
ID=40886517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0900563A Expired - Fee Related FR2941902B1 (en) | 2009-02-09 | 2009-02-09 | ACOUSTIC AND THERMAL PROTECTIVE DEVICE WITH RESPECT TO A SOUND, HOT SOURCE ARRANGED IN A MOTOR VEHICLE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2941902B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2620329A1 (en) * | 2012-01-26 | 2013-07-31 | Centre D'etude Et De Recherche Pour L'automobile (Cera) | Method for thermal and sonic shielding of a structural panel of an automobile vehicle |
| FR3088657A1 (en) * | 2018-11-16 | 2020-05-22 | Treves Products, Services & Innovation | ACOUSTIC PROTECTION DEVICE FOR MOUNTING AROUND A SOUND COMPONENT OF A MOTOR VEHICLE ENGINE |
| CN113085751A (en) * | 2021-03-24 | 2021-07-09 | 东风商用车有限公司 | Independent commercial vehicle EGP heat insulation structure and commercial vehicle comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB242558A (en) * | 1925-06-22 | 1925-11-12 | Thomas Linndwer Taylor | Improvements in or relating to the engine bonnets of motor vehicles |
| DE4019121A1 (en) * | 1989-06-13 | 1991-01-10 | Suzuki Motor Co | Insulation of bonnet of motor vehicle - is attached by screws or rivets to bonnet reinforcing member |
| DE9110552U1 (en) * | 1991-08-26 | 1992-12-24 | Irbit Research + Consulting Ag, Freiburg/Fribourg, Ch | |
| DE102005030177A1 (en) * | 2005-06-29 | 2006-06-14 | Daimlerchrysler Ag | Floor system for motor vehicle body has floor plates in form of multi-wall light construction plates with sides bounding hollow chamber arrangement with chambers lying in direction of floor |
| FR2906204A1 (en) * | 2006-09-27 | 2008-03-28 | Cera | Thermal and acoustic protection device for motor vehicle, has body structure with inner surface part associated to flexible acoustic absorption complex, where complex has absorbing layer with inner face associated to porous protection layer |
| WO2008141380A1 (en) * | 2007-05-21 | 2008-11-27 | Bellmax Acoustic Pty Ltd | A sheet material for use in a multilayered acoustic shield |
-
2009
- 2009-02-09 FR FR0900563A patent/FR2941902B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB242558A (en) * | 1925-06-22 | 1925-11-12 | Thomas Linndwer Taylor | Improvements in or relating to the engine bonnets of motor vehicles |
| DE4019121A1 (en) * | 1989-06-13 | 1991-01-10 | Suzuki Motor Co | Insulation of bonnet of motor vehicle - is attached by screws or rivets to bonnet reinforcing member |
| DE9110552U1 (en) * | 1991-08-26 | 1992-12-24 | Irbit Research + Consulting Ag, Freiburg/Fribourg, Ch | |
| DE102005030177A1 (en) * | 2005-06-29 | 2006-06-14 | Daimlerchrysler Ag | Floor system for motor vehicle body has floor plates in form of multi-wall light construction plates with sides bounding hollow chamber arrangement with chambers lying in direction of floor |
| FR2906204A1 (en) * | 2006-09-27 | 2008-03-28 | Cera | Thermal and acoustic protection device for motor vehicle, has body structure with inner surface part associated to flexible acoustic absorption complex, where complex has absorbing layer with inner face associated to porous protection layer |
| WO2008141380A1 (en) * | 2007-05-21 | 2008-11-27 | Bellmax Acoustic Pty Ltd | A sheet material for use in a multilayered acoustic shield |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2620329A1 (en) * | 2012-01-26 | 2013-07-31 | Centre D'etude Et De Recherche Pour L'automobile (Cera) | Method for thermal and sonic shielding of a structural panel of an automobile vehicle |
| FR2986200A1 (en) * | 2012-01-26 | 2013-08-02 | Cera | METHOD OF THERMALLY AND ACOUSTICALLY PROTECTING A STRUCTURE WALL OF A MOTOR VEHICLE |
| FR3088657A1 (en) * | 2018-11-16 | 2020-05-22 | Treves Products, Services & Innovation | ACOUSTIC PROTECTION DEVICE FOR MOUNTING AROUND A SOUND COMPONENT OF A MOTOR VEHICLE ENGINE |
| CN113085751A (en) * | 2021-03-24 | 2021-07-09 | 东风商用车有限公司 | Independent commercial vehicle EGP heat insulation structure and commercial vehicle comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2941902B1 (en) | 2011-04-08 |
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