EP3999732A1 - Repartiteur d'admission en matiere plastique avec un chemisage interieur au moins partiel - Google Patents
Repartiteur d'admission en matiere plastique avec un chemisage interieur au moins partielInfo
- Publication number
- EP3999732A1 EP3999732A1 EP20739730.8A EP20739730A EP3999732A1 EP 3999732 A1 EP3999732 A1 EP 3999732A1 EP 20739730 A EP20739730 A EP 20739730A EP 3999732 A1 EP3999732 A1 EP 3999732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- shells
- wall
- distributor
- sheet
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims description 8
- 239000004033 plastic Substances 0.000 title description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 23
- 238000005755 formation reaction Methods 0.000 claims abstract description 23
- 238000004873 anchoring Methods 0.000 claims abstract description 20
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding 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
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
-
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
-
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
-
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10327—Metals; Alloys
-
- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/1034—Manufacturing and assembling intake systems
- F02M35/10354—Joining multiple sections together
- F02M35/1036—Joining multiple sections together by welding, bonding or the like
Definitions
- the present invention relates to the field of technical equipment of motor vehicles, more particularly the components under the hood linked to the air intake, and relates to a distributor or intake manifold made of plastic for such a vehicle, in particular equipped with an EGR circuit, with at least partial heat-resistant internal lining, preferably metallic.
- the temperature of the EGR gases can locally rise up to 400 ° and with the presence of soot and tar in the distributor, can locally cause the walls of the distributor to melt, when the latter is made of plastic.
- Another known solution to overcome this problem is to coat the inner wall of the plastic distributor with a layer of aluminum which has good thermal resistance and good thermal conductivity to distribute the heat over the entire surface of the coating .
- the aim of the invention is to provide a distributor with an improved method of fixing an internal protective metal coating, which is compatible with the cost and assembly constraints associated with mass-produced products and which also has better thermal resistance (in particular elimination of the solution fixing pads as mentioned above), as well as better mechanical resistance.
- the invention relates to an intake distributor or manifold made of thermoplastic material consisting of at least two parts in one piece each and in the form of shells or shells, these shells being assembled rigidly between they at the level of respective circumferential peripheral edges and together constituting a distributor body delimiting an internal hollow volume, at least one of said shells or shells comprising an attached sheet or sheet made of a metallic material, at least partially covering the internal face of the wall of the or each shell concerned and preformed to substantially match at least locally the shape of the wall of this shell in the manner of a skin, said or each metal sheet being mechanically and rigidly attached to the shell concerned,
- the or each shell comprises anchoring sites for attached fixing means, intended to directly or indirectly secure the or each metal sheet with this shell, these anchoring sites being located in formations of thermoplastic material made in one piece with the wall of said shell, located at the level of the circumferential edge and extending outwardly from said wall, opposite its internal face participating in the delimitation of the internal volume.
- FIG. 1 A is a perspective view of a distributor according to one embodiment of the invention.
- FIG. 1 B is an exploded view of the distributor shown in FIG. 1 A;
- FIG. 2B are perspective views of the two constituent parts of the distributor of FIG. 1, before their assembly;
- FIG. 3 is a sectional view of the distributor of Figure 1 along a plane passing through anchoring sites and superimposed fixing means of its two constituent parts;
- FIG. 4B are sectional views of Figures 2A and 2B respectively, along the same sectional plane as that of Figure 3;
- FIG. 5 is a view on a different scale from detail A of FIG. 2B;
- FIG. 6 is a view on a different scale from detail B of FIG. 2A;
- FIG. 7 is a view on a different scale from detail C of FIG. 2B;
- FIG. 8B are perspective views of the two cut and formed metal sheets, constituting the two parts of shells composing together (and with partial overlap) the skin or the internal insert (e) of the part of the distributor shown in figure 2A, and,
- FIG. 9B are perspective views of the two cut and formed metal sheets constituting the two shell parts making up together (and with partial overlap) the skin or insert screen (e) inside (e) of the distributor part shown in Figure 2B.
- Figures 1 to 4 show, for some only partially, a distributor or intake manifold 1 made of thermoplastic material consisting of at least two parts in one piece each and in the form of shells or shells 2, 2 ', these shells 2, 2' being rigidly assembled together at the level of respective circumferential peripheral edges 3, 3 'and together constituting a distributor body 1' delimiting an interior hollow volume 1 ”, at least one of said shells or shells 2, 2 'comprising a sheet or sheet 4, 4' added in a metallic material, at least partially covering the internal face 5 'of the wall 5 of the or each shell 2, 2' concerned and preformed to substantially at least locally match the shape of the wall 5 of this shell in the manner of a skin, said or each metal sheet 4, 4 'being mechanically and rigidly secured to the shell 2, 2' concerned.
- a distributor or intake manifold 1 made of thermoplastic material consisting of at least two parts in one piece each and in the form of shells or shells 2, 2 ', these shells 2, 2' being rigidly assembled
- the or each shell 2, 2 ' comprises anchoring sites 6 for attachment means 7 reported, intended to directly or indirectly secure the or each metal sheet 4, 4' with this shell 2, 2 ', these anchoring sites 6 being located in formations 8 of thermoplastic material made in one piece with the wall 5 of said shell 2, 2', located at the level of the circumferential edge 3, 3 'and s 'extending outwards from said wall 5, opposite its internal face 5' participating in the delimitation of the internal volume 1 ”.
- the invention proposes to achieve the attachment of the attached metal skin 4, 4 'with the body 1' of the distributor outside the interior volume 1 ”for receiving the gas mixture, namely in areas cut off at the 'deviation from this volume, at the level of additional peripheral formations 8 specifically provided for this purpose and formed with the body 1'.
- the fixing means 7 are therefore, at least for the most part, not directly exposed to the thermal effects of the hot gas flow circulating in the distributor 1.
- these formations 8 are in the form of additional external material thicknesses with respect to the current material thickness of the wall 5. They thus provide locations for locating anchoring sites 6 which do not interfere with the continuity of the wall 5 of the body 1 '(they are not integrated in the thickness of said wall) and which make it possible to keep at these places also, at least the same wall thickness 5 ("e") as for the rest of the body 1 'or of the shell or shell 2, 2' concerned (between the internal face 5 'and said sites 6).
- a wall thickness (denoted “E” in Figures 4A and 4B) locally greater than the current thickness is provided by these formations 8, for example at least double compared to said current thickness (noted "e” on the figure. figure 4B).
- the longitudinal axes of said sites 6 have an arrangement and a tangential extension with respect to the local wall portions 5 concerned, therefore not secant relative to the local plane of said wall 5.
- formations 8 may of course, at least for some be integrated, in structures or parts of the body 1 'fulfilling other functions such as sites for fixing the distributor 1 to other components or reinforcing ribs structural (see Figures 3 and 4A).
- each fixing means 7 consists of a screw, preferably a self-forming or self-forming screw -driller, and each anchoring site 6 consists of a blind hole or well formed in a material formation 8 of the type extra thickness or localized protuberance of the wall 5 of the shell 2, 2 'concerned, substantially level with the circumferential edge 3, 3 'corresponding and extending laterally outwardly therefrom.
- the or each sheet 4, 4 is attached directly to the corresponding shell 2, 2" and this without the implementation of an additional intermediate connecting piece (with the exception of a fastening means 7).
- each preformed metal sheet 4, 4 ' comprises side legs 9, advantageously of a single holding with said sheet, extending outwardly and arranged and configured for a positioning coinciding with the formations 8 of the shell 2, 2 'receiving it, each tab 9 having an eyelet 9' for the passage of a means of attachment 7, which coincides with the anchoring site in the form of a blind hole 6 of the corresponding formation 8.
- the aforementioned constitution of the metal sheets 4, 4 'forming the internal thermal protection skin makes it possible to limit the transmission of heat to the fixing means 7 and the associated anchoring sites 6 (tabs 9 elongated and narrow).
- the fixing means 7 consist of flat-head screws whose exposure to the interior environment is extremely limited (only their visible surface at the level of the eyelets 9 'is exposed).
- the invention preferably provides that the circumferential edge 3, 3' of each shell 2, 2 'comprises a Continuous weld bead 10 which, at the level of formations 8 housing the anchoring sites 6, extends around said sites 6, bypassing them on the outside and forming enveloping bead portions 10 '.
- the or each preformed metal sheet 4, 4' may include reliefs (not shown), for example local deformations of said sheet, prominent on the face of the sheet concerned coming into contact with the internal face 5 'of the wall 5 of the shell 2, 2' concerned, these reliefs constituting support points, said internal face 5 'of the wall 5 of the shell 2, 2 'optionally comprising counter-reliefs (not shown) integrally formed, a discontinuous interstitial space 1 1 thus being formed between the metal skin 4, 4' and the corresponding shell 2, 2 '.
- the latter may comprise, at least at the level of one of the shells 2, 2 ', at least one spacer element 12 extending between two formations 8 located on opposite edge portions 3, 3 'by connecting them together and secured at the level of the latter by the fixing means 7 of the preformed metal sheet attached 4, 4', said spacer element 12 being optionally pre- integral with the preformed metal sheet 4, 4 'concerned (see Figures 3, 4B, 5 and 9).
- This or each spacer element 12 is advantageously in the form of a metal rod or strip having a limited apparent surface exposed to the gaseous fluid circulating inside the body 1 '.
- At least one of the shells 2, 2 ' may include one or more openings 13 in its wall 5, where appropriate extended by end pieces, such as pipes, the or each preformed metal sheet attached 4, 4 'in this shell 2, 2' comprising openings 14 coincident with those of said wall 5, advantageously with deformations local of said sheet 4, 4 'partially inserting into said openings 13 of the wall 5 of said shell 2, 2 (the edges of the openings 14 may be curved like the edges of the corresponding openings 13).
- the local deformations of the sheet 4, 4 ’ can thus constitute thermal protective linings of the openings 13 of the wall 5 and of the inner surface of the primers at least of the end pieces which extend them outwards.
- each shell 2, 2 ' may include a metallic skin for the inner coating.
- each shell 2, 2 ' comprises at least one attached preformed metal sheet 4, 4', preferably at least two sheets 4 and 4 'overlapping each other in part ( Figures 2A and 2B). This latter variant allows better compensation for manufacturing tolerances and thermal expansions, and facilitates manufacturing and assembly.
- the distributor 1 comprises two shells 2 and 2 'each of which comprises at least one preformed metal sheet attached 4, 4', these preformed metal sheets 4, 4 'in in the form of shells, or parts of shells 15 ', 15 ", together constituting a hollow body 15 which substantially delimits the volume of the plenum and which is mounted in the hollow body 1' of the distributor 1 by lining it internally.
- each preformed sheet 4, 4 ' constitutes part of a shell 15' or 15 ", the assembly of these two shells 15 'and 15" resulting in to the hollow body 15 for the internal lining of the hollow body 1 'of the distributor 1.
- This construction offers optimum thermal protection of the wall 5 of the distributor 1.
- the material formations 8 comprising the anchoring sites 6 of the two shells 2 and 2 'forming the body of the distributor 1 are coincident with each other, and the enveloping weld bead portions 10 'at the level of the formations 8 of the two shells 2 and 2' define by mutual cooperation two by two the housing cavities 16 for the visible parts of the fixing means 7, for example screw heads.
- These cavities 16 constitute peripheral lateral niches set back relative to the internal volume of the hollow body 1 'and in which also extend the legs 9.
- These cavities 16 of flat shape have only limited fluid communication with the internal volume of the hollow body 1 ′, through a constricted passage further receiving the tabs 9 of the two shells 15 and 15 ′ and, where appropriate, a spacer end 12 (see Figures 3 and 4 and see below).
- the thicknesses of the portions of cord 10 ' are determined such that the heads of the screws 7 do not touch after assembly, but also such that the opening of the housing cavities 16 remote has a reduced section, limiting the propagation of hot gases in these cavities.
- These housings 16 are, where appropriate, dimensioned to also receive the spacers 12 (for example spacing of 1 mm to 3 mm between the heads of screws 7 opposite).
- each attached preformed metal sheet 4, 4 ' consists of a stamped metal sheet, having lateral securing tabs 9 in one piece and, where appropriate, cutouts 14, said sheet 4, 4' consisting of aluminum or stainless steel.
- each skin or shell of a shell 2, 2 'can consist of a single metal sheet of type 1, 4509 or 1, 4301 stainless steel, for example with a thickness between 0.8 mm and 1.0 mm.
- each shell or skin may consist of two sheets of aluminum or stainless steel overlapping partially and locally to ensure uninterrupted coverage in the event of thermal expansion.
- the shells 2, 2 ’for their part are made of thermoplastic material, where appropriate reinforced with fibers. They can advantageously have outer stiffening wings or ribs.
- the invention also relates to a motor vehicle with an internal combustion engine, characterized in that it comprises at least one intake distributor 1 as mentioned above.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1908201A FR3098863B1 (fr) | 2019-07-19 | 2019-07-19 | Répartiteur d'admission en matière plastique avec un chemisage intérieur au moins partiel |
PCT/EP2020/070363 WO2021013755A1 (fr) | 2019-07-19 | 2020-07-17 | Repartiteur d'admission en matiere plastique avec un chemisage interieur au moins partiel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3999732A1 true EP3999732A1 (fr) | 2022-05-25 |
EP3999732B1 EP3999732B1 (fr) | 2023-08-30 |
Family
ID=68733240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20739730.8A Active EP3999732B1 (fr) | 2019-07-19 | 2020-07-17 | Répartiteur d'admission en matière plastique avec un chemisage intérieur au moins partiel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3999732B1 (fr) |
FR (1) | FR3098863B1 (fr) |
WO (1) | WO2021013755A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006010601A1 (de) * | 2005-03-10 | 2006-10-12 | Mann + Hummel Gmbh | Motorbauteil mit einer Wabenstruktur |
FR2927127B1 (fr) | 2008-02-04 | 2010-02-12 | Peugeot Citroen Automobiles Sa | Dispositif de repartition des gaz d'admission pour un moteur a combustion interne. |
FR2931900A1 (fr) | 2008-05-29 | 2009-12-04 | Peugeot Citroen Automobiles Sa | Dispositif de repartition des gaz d'admission pour un moteur a combustion interne |
DE102013006956B4 (de) * | 2013-04-23 | 2020-06-04 | Mann+Hummel Gmbh | Luftführendes Bauteil mit einem Ladeluftkühler |
CN109139312A (zh) * | 2018-10-08 | 2019-01-04 | 台州市黄岩杉盛复合材料科技有限公司 | 一种柴油发动机进气歧管 |
-
2019
- 2019-07-19 FR FR1908201A patent/FR3098863B1/fr active Active
-
2020
- 2020-07-17 WO PCT/EP2020/070363 patent/WO2021013755A1/fr active Search and Examination
- 2020-07-17 EP EP20739730.8A patent/EP3999732B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
EP3999732B1 (fr) | 2023-08-30 |
WO2021013755A1 (fr) | 2021-01-28 |
FR3098863A1 (fr) | 2021-01-22 |
FR3098863B1 (fr) | 2021-06-25 |
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