WO2015150657A1 - Motor vehicle comprising a partly flexible turbocompressor air outlet duct - Google Patents

Motor vehicle comprising a partly flexible turbocompressor air outlet duct Download PDF

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Publication number
WO2015150657A1
WO2015150657A1 PCT/FR2015/050670 FR2015050670W WO2015150657A1 WO 2015150657 A1 WO2015150657 A1 WO 2015150657A1 FR 2015050670 W FR2015050670 W FR 2015050670W WO 2015150657 A1 WO2015150657 A1 WO 2015150657A1
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WO
WIPO (PCT)
Prior art keywords
motor vehicle
pedestrian
vehicle according
flexible
engine
Prior art date
Application number
PCT/FR2015/050670
Other languages
French (fr)
Inventor
Franck EVEN
Original Assignee
Renault S.A.S
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 Renault S.A.S filed Critical Renault S.A.S
Publication of WO2015150657A1 publication Critical patent/WO2015150657A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

Definitions

  • the invention relates to a motor vehicle.
  • the invention more particularly relates to a motor vehicle comprising at least one body structure element comprising a motor compartment which is intended to receive an engine of said vehicle and which is closed in an upper part by a cover, said cover defining a safety clearance determining a pedestrian impact sheet which is interposed between said cover and an upper end of the engine to allow deformation of said cover in said sheet in the event of reception of a pedestrian on the cover, said motor comprising at least one air duct which extends over the upper end of the engine and comprises a tubular intermediate section which extends longitudinally in the pedestrian shock layer, and which is connected to a front section and a rear section.
  • the safety clearance or pedestrian impact pad that is arranged between the hood and the engine of the vehicle is an unavoidable security element that allows a pedestrian potentially mowed by the vehicle on the one hand to see the vehicle.
  • kinetic energy of the shock partially absorbed by a deformation of the hood and secondly not to come into direct contact through the hood with highly rigid elements such as the vehicle engine.
  • the powertrain element which is arranged at the upper end of the engine is for example a rigid conduit, for example a turbocharger air outlet duct connecting the turbocharger to a cooler arranged in front of the engine.
  • Such a rigid conduit can not be arranged in the pedestrian impact sheet because it would risk in case of shock at least to render the pedestrian impact sheet ineffective and thus cause damage to the pedestrian concerned.
  • the invention overcomes this disadvantage by proposing a motor vehicle of the type described above with an air duct of a turbocharger having a flexible portion arranged in the pedestrian impact ply, and which as such can retain all the efficiency of such a web.
  • the invention proposes a motor vehicle of the type described above, characterized in that the intermediate section comprises a rigid lower portion extending parallel to the axis of the duct outside the pedestrian impact ply and an upper portion. complementary and flexible able to deform.
  • the rigid lower part of the intermediate section comprises a substantially tubular front end and a rear end connected respectively to the front section and to the rear section,
  • the rigid lower part comprises a longitudinal notch extending along the axis under the pedestrian shock layer, the indentation of the lower part of the intermediate section comprises a prolonged edge by a sole which extends longitudinally under the shock layer; pedestrian and which receives a perimeter fixing the flexible upper part of said intermediate section, the upper part comprises a flexible portion of an air duct wall whose edges are crimped in the fastening periphery,
  • the flexible portion of the duct wall of the flexible upper part is made of an elastomer-based material such as a rubber or a silicone,
  • the rigid lower part of the intermediate section comprises fixing means able to keep it secured to the upper end of the motor
  • the fastening periphery is of the same material as the sole of the lower part of the intermediate section.
  • the periphery of the upper part is fixed to the sole of the rigid lower part by gluing or microvibrations.
  • FIG. 1 is a perspective view of the relative arrangement of a conventional powertrain and a pedestrian impact ply of reduced height
  • Figure 2 is a longitudinal sectional view of the arrangement of Figure 1;
  • FIG. 3 is a sectional view of the relative arrangement of a powertrain and a pedestrian impact ply of reduced height according to the invention
  • FIG. 4 is a side view in the transverse direction of the intermediate portion of the air duct
  • FIG. 5 is a longitudinal sectional view of the flexible upper part of the air duct.
  • FIGS. 1 and 2 show a front portion 10 of a motor vehicle.
  • a motor vehicle comprises at least one body structure element (not shown) comprising a motor compartment 12 which is intended to receive a motor 14 of said vehicle and, by way of example and in a nonlimiting manner of the a front cooler 16 which is arranged vertically in front of the compartment 12.
  • the compartment 12 is moreover closed in an upper part by a cover 18, which has been represented in FIG.
  • the cover 18 defines with the engine 14 a set "J" security which defines a pedestrian shock sheet 20.
  • the ply 20 is thus interposed between said cover 18 and an upper end 22 of the motor 14 to allow deformation of the cover 18 in the thickness of said ply 20 when a pedestrian is received on the cover 18.
  • the motor 14 also comprises at least one air duct 24, in particular and without limitation of the invention, an air outlet duct 24 of a turbocharger 26 of the engine which connects said turbocharger 26 to the cooler 16 and which extends over the upper end 22 of the motor 14.
  • the air duct 24 extends substantially longitudinally between the turbocharger 26, which is arranged behind the engine 14, and the cooler 16.
  • the duct 24 comprises a rear section 32, a front section 36 and an intermediate section 34.
  • FIG. 2 shows these three sections 32, 34, 36 nested one inside the other, but it will be understood that this configuration is not limiting of the invention and that said sections 32, 34, 36 could be come from matter to each other. In certain vehicle configurations, it may be desirable to reduce the height of the hood 18. In this configuration the pedestrian crash pad 20 may theoretically interfere with upper elements of the engine 14, particularly with the air duct 24, as shown in Figure 2.
  • the invention overcomes this disadvantage by proposing a motor vehicle of the type described above with an air duct 24 having a flexible portion 28 arranged in the pedestrian impact sheet 20 and which, as such, makes it possible to retain all the effectiveness of such a web 20.
  • the invention proposes a motor vehicle of the type described above, characterized in that the intermediate section 34 comprises a rigid lower portion 38 extending parallel to an axis of the duct 24. outside the pedestrian shock layer 20 and a complementary upper part 28 and flexible able to deform.
  • the air outlet duct 24 comprises a portion 28 of said air outlet duct 24 which extends into the pedestrian impact ply 20 and a complementary rigid portion 38 which extends outside the duct. pedestrian shock sheet.
  • the rigid portion 38 is not detrimental to the pedestrian impact sheet 20. It is therefore preferable to maintain a duct 24 comprising a rigid portion 38, if only in this particular configuration to ensure effective fastening of the duct 24 to the turbocharger 26 and to the cooler 16.
  • the rigid lower portion 38 of the intermediate section 34 comprises a substantially tubular front end 37 and a rear end 39 connected respectively to the front section 36 and to the rear section 32.
  • the rigid lower portion 38 comprises a longitudinal notch 30 extending along the axis of the duct 24 under the pedestrian impact sheet 20.
  • the notch 30 of the lower portion 38 of the intermediate portion 34 which has been shown in FIG. 3 comprises, as illustrated in FIG. 4, a prolonged edge by a sole 40 which extends longitudinally under the ply 20 pedestrian shock and which receives a periphery 42 for fixing the flexible upper portion 28 of said intermediate section 34.
  • the periphery 42 also extends parallel to the hood in the immediate vicinity of a lower limit "L" of the pedestrian impact ply 20. Indeed, the periphery 42, which is intended to ensure the attachment of the flexible upper portion 28, must for this reason have a rigidity for its sealing on the base 40, and must therefore be arranged out of the pedestrian shock sheet.
  • the upper portion 28 comprises a flexible portion 44 of air duct wall whose edges 46 are crimped in the perimeter 42 of attachment.
  • This flexible pipe wall portion 44 of the flexible upper portion 28 is advantageously made of an elastomer-based material such as a rubber or a silicone, but it will be understood that any other flexible and waterproof material may be suitable for the right one. implementation of the invention.
  • the perimeter 42 of attachment is of the same material as the sole 40 of the lower part 38 of the intermediate section 24.
  • the periphery 42 thus ensures the retention of the flexible portion 44 of wall of the flexible upper portion 28, while ensuring a satisfactory seal.
  • Any known method of the state of the art may be suitable for the proper fixing of the periphery 42 on the sole 40.
  • the periphery 42 of the upper part is fixed to the sole 40 the rigid lower part by gluing or microvibration.
  • the rigid lower portion 38 of the intermediate section includes fastening means 48 able to hold it integral with the upper end 22 of the motor 14. These means may for example consit into a counterfoil 48. following the shape of the upper end of the motor 22, but also in fixing means such as screws, or pins (not shown).
  • the invention therefore makes it possible to reduce the height of a motor vehicle hood 18 without compromising the effectiveness of the pedestrian shock sheet 20.

Abstract

The invention proposes a motor vehicle comprising at least one body structure element comprising an engine compartment (12) that is intended to receive an engine of said vehicle and that is closed in a upper portion by a bonnet (18), said bonnet (18) delimiting a safety clearance (J) or pedestrian impact layer (20) with said bonnet (18) and a top end (22) of the engine to allow said bonnet (18) to deform in case of contact with a pedestrian on the bonnet (18), said engine (14) comprising at least one air duct (24) that extends over the top end (22) of the engine and that comprises a tubular intermediate section that extends longitudinally into the pedestrian impact layer (20), and that comprises a complementary upper part that is flexible and capable of deforming.

Description

VEHICULE AUTOMOBILE COMPORTANT UN CONDUIT DE SORTIE D'AIR DE TURBOCOMPRESSEUR EN PARTIE SOUPLE  MOTOR VEHICLE HAVING A FLEXIBLE PART TURBOCHARGER AIR OUTPUT DUCT
L'invention concerne un véhicule automobile. The invention relates to a motor vehicle.
L'invention concerne plus particulièrement un véhicule automobile comportant au moins un élément de structure de caisse comportant un compartiment moteur qui est destiné à recevoir un moteur dudit véhicule et qui est fermé dans une partie supérieure par un capot, ledit capot délimitant un jeu de sécurité déterminant une nappe de choc de piéton qui est interposée entre ledit capot et une extrémité supérieure du moteur pour permettre une déformation dudit capot dans ladite nappe en cas de réception d'un piéton sur le capot, ledit moteur comportant au moins un conduit d'air qui s'étend sur l'extrémité supérieure du moteur et comprenant un tronçon intermédiaire tubulaire qui s'étend longitudinalement dans la nappe de choc piéton, et qui est connecté à un tronçon avant et à tronçon arrière.  The invention more particularly relates to a motor vehicle comprising at least one body structure element comprising a motor compartment which is intended to receive an engine of said vehicle and which is closed in an upper part by a cover, said cover defining a safety clearance determining a pedestrian impact sheet which is interposed between said cover and an upper end of the engine to allow deformation of said cover in said sheet in the event of reception of a pedestrian on the cover, said motor comprising at least one air duct which extends over the upper end of the engine and comprises a tubular intermediate section which extends longitudinally in the pedestrian shock layer, and which is connected to a front section and a rear section.
Dans un véhicule de ce type, le jeu de sécurité ou nappe de choc piéton qui est agencé entre le capot et le moteur du véhicule est un élément incontournable de sécurité qui permet à un piéton potentiellement fauché par le véhicule d'une part de voir l'énergie cinétique du choc partiellement absorbée par une déformation du capot et d'autre part de ne pas entrer directement en contact à travers le capot avec des éléments hautement rigides comme le moteur du véhicule.  In a vehicle of this type, the safety clearance or pedestrian impact pad that is arranged between the hood and the engine of the vehicle is an unavoidable security element that allows a pedestrian potentially mowed by the vehicle on the one hand to see the vehicle. kinetic energy of the shock partially absorbed by a deformation of the hood and secondly not to come into direct contact through the hood with highly rigid elements such as the vehicle engine.
Lorsque l'on désire réduire la hauteur de capot, par exemple pour des raisons de style ou d'aérodynamique, se pose le problème de l'encombrement vertical du groupe motopropulseur.  When it is desired to reduce the height of the hood, for example for reasons of style or aerodynamics, there is the problem of the vertical size of the powertrain.
En effet, il ne peut être envisagé de réduire l'épaisseur de la nappe de choc piéton, tout comme il ne peut être envisagé qu'un quelconque élément rigide du groupe motopropulseur soit agencé dans la nappe de choc piéton. Or, l'élément du groupe motopropulseur qui est agencé à l'extrémité supérieure du moteur est par exemple un conduit rigide, par exemple un conduit de sortie d'air du turbocompresseur reliant le turbocompresseur à un refroidisseur agencé en avant du moteur. Indeed, it can not be envisaged to reduce the thickness of the pedestrian shock ply, just as it can be envisaged that any rigid element of the powertrain is arranged in the pedestrian impact ply. However, the powertrain element which is arranged at the upper end of the engine is for example a rigid conduit, for example a turbocharger air outlet duct connecting the turbocharger to a cooler arranged in front of the engine.
Un tel conduit rigide ne peut être agencé dans la nappe de choc piéton car il risquerait en cas de choc au moins de rendre inefficace la nappe de choc piéton et d'occasionner ainsi des lésions au piéton concerné.  Such a rigid conduit can not be arranged in the pedestrian impact sheet because it would risk in case of shock at least to render the pedestrian impact sheet ineffective and thus cause damage to the pedestrian concerned.
L'invention remédie à cet inconvénient en proposant un véhicule automobile du type décrit précédemment doté d'un conduit d'air d'un turbocompresseur comportant une partie souple agencée dans la nappe de choc piéton, et qui à ce titre permet de conserver toute l'efficacité d'une telle nappe.  The invention overcomes this disadvantage by proposing a motor vehicle of the type described above with an air duct of a turbocharger having a flexible portion arranged in the pedestrian impact ply, and which as such can retain all the efficiency of such a web.
Dans ce but, l'invention propose un véhicule automobile du type décrit précédemment, caractérisé en ce que le tronçon intermédiaire comporte une partie inférieure rigide s'étendant parallèlement à l'axe du conduit en dehors de la nappe de choc piéton et une partie supérieure complémentaire et souple apte à se déformer.  For this purpose, the invention proposes a motor vehicle of the type described above, characterized in that the intermediate section comprises a rigid lower portion extending parallel to the axis of the duct outside the pedestrian impact ply and an upper portion. complementary and flexible able to deform.
Selon d'autres caractéristiques de l'invention :  According to other features of the invention:
- la partie inférieure rigide du tronçon intermédiaire comprend une extrémité avant et une extrémité arrière sensiblement tubulaires connectées respectivement au tronçon avant et au tronçon arrière,  the rigid lower part of the intermediate section comprises a substantially tubular front end and a rear end connected respectively to the front section and to the rear section,
- la partie inférieure rigide comporte une échancrure longitudinale s'étendant selon l'axe sous la nappe de choc piéton, l'échancrure de la partie inférieure du tronçon intermédiaire comporte une bordure prolongée par une semelle qui s'étend longitudinalement sous la nappe de choc piéton et qui reçoit un pourtour de fixation de la partie supérieure souple dudit tronçon intermédiaire, - la partie supérieure comporte une portion souple de paroi de conduit d'air dont des bords sont sertis dans le pourtour de fixation, the rigid lower part comprises a longitudinal notch extending along the axis under the pedestrian shock layer, the indentation of the lower part of the intermediate section comprises a prolonged edge by a sole which extends longitudinally under the shock layer; pedestrian and which receives a perimeter fixing the flexible upper part of said intermediate section, the upper part comprises a flexible portion of an air duct wall whose edges are crimped in the fastening periphery,
- la portion souple de paroi de conduit de la partie supérieure souple est réalisée en un matériau à base d'élastomère tel qu'un caoutchouc ou un silicone,  the flexible portion of the duct wall of the flexible upper part is made of an elastomer-based material such as a rubber or a silicone,
- la partie inférieure rigide du tronçon intermédiare comporte des moyens de fixation aptes à le maintenir solidaire de l'extrémité supérieure du moteur,  the rigid lower part of the intermediate section comprises fixing means able to keep it secured to the upper end of the motor,
- le pourtour de fixation est de même matière que la semelle de la partie inférieure du tronçon intermédiaire.  the fastening periphery is of the same material as the sole of the lower part of the intermediate section.
- le pourtour de la partie supérieure est fixé à la semelle de la partie inférieure rigide par collage ou microvibrations.  - The periphery of the upper part is fixed to the sole of the rigid lower part by gluing or microvibrations.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :  Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue en perspective de l'agencement relatif d'un groupe motopropulseur conventionnel et d'une nappe de choc piéton de hauteur réduite ;  - Figure 1 is a perspective view of the relative arrangement of a conventional powertrain and a pedestrian impact ply of reduced height;
- la figure 2 est une vue en coupe longitudinale de l'agencement de la figure 1 ;  - Figure 2 is a longitudinal sectional view of the arrangement of Figure 1;
- la figure 3 est une vue en coupe de l'agencement relatif d'un groupe motopropulseur et d'une nappe de choc piéton de hauteur réduite selon l'invention ;  - Figure 3 is a sectional view of the relative arrangement of a powertrain and a pedestrian impact ply of reduced height according to the invention;
- la figure 4 est une vue de côté selon la direction transversale du tronçon intermédiaire du conduit d'air ;  - Figure 4 is a side view in the transverse direction of the intermediate portion of the air duct;
- la figure 5 est une vue en coupe longitudinale de la partie supérieure souple du conduit d'air.  - Figure 5 is a longitudinal sectional view of the flexible upper part of the air duct.
Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires.  In the following description, like reference numerals designate like parts or having similar functions.
Par convention, les termes "avant", "arrière", supérieur", "inférieur" désignent respectivement des éléments ou des positions orientés respectivement vers la gauche, la droite, le haut, ou le bas des figures 1 à 5. By convention, the terms "forward", "rear", "upper", "lower" mean respectively elements or positions oriented respectively to the left, right, top, or bottom of Figures 1 to 5.
On a représenté aux figures 1 et 2 une partie avant 10 d'un véhicule automobile.  FIGS. 1 and 2 show a front portion 10 of a motor vehicle.
De manière connue, une véhicule automobile comporte au moins un élément de structure de caisse (non représenté) comportant un compartiment moteur 12 qui est destiné à recevoir un moteur 14 dudit véhicule et, à titre d'exemple et de manière non limitative de l'invention, un refroidisseur 16 avant qui est agencé verticalement en avant du compartiment 12. Le compartiment 12 est par ailleurs fermé dans une partie supérieure par un capot 18, qui a été représenté à la figure 2.  In known manner, a motor vehicle comprises at least one body structure element (not shown) comprising a motor compartment 12 which is intended to receive a motor 14 of said vehicle and, by way of example and in a nonlimiting manner of the a front cooler 16 which is arranged vertically in front of the compartment 12. The compartment 12 is moreover closed in an upper part by a cover 18, which has been represented in FIG.
De manière connue, le capot 18 délimite avec le moteur 14 un jeu "J" de sécurité qui définit une nappe 20 de choc de piéton.  In known manner, the cover 18 defines with the engine 14 a set "J" security which defines a pedestrian shock sheet 20.
La nappe 20 est donc interposée entre ledit capot 18 et une extrémité supérieure 22 du moteur 14 pour permettre une déformation du capot 18 dans l'épaisseur de ladite nappe 20 en cas de réception d'un piéton sur le capot 18.  The ply 20 is thus interposed between said cover 18 and an upper end 22 of the motor 14 to allow deformation of the cover 18 in the thickness of said ply 20 when a pedestrian is received on the cover 18.
Le moteur 14 comporte par ailleurs au moins un conduit 24 d'air, notamment et de manière non limitative de l'invention, un conduit 24 de sortie d'air d'un turbocompresseur 26 du moteur qui relie ledit turbocompresseur 26 au refroidisseur 16 et qui s'étend sur l'extrémité supérieure 22 du moteur 14.  The motor 14 also comprises at least one air duct 24, in particular and without limitation of the invention, an air outlet duct 24 of a turbocharger 26 of the engine which connects said turbocharger 26 to the cooler 16 and which extends over the upper end 22 of the motor 14.
Comme l'illustre la figure 2, le conduit d'air 24 s'étend sensiblement longitudinalement entre le turbocompresseur 26, qui agencé en arrière du moteur 14, et le refroidisseur 16.  As illustrated in FIG. 2, the air duct 24 extends substantially longitudinally between the turbocharger 26, which is arranged behind the engine 14, and the cooler 16.
Le conduit 24 comporte un tronçon arrière 32, un tronçon avant 36 et un tronçon intermédiaire 34.  The duct 24 comprises a rear section 32, a front section 36 and an intermediate section 34.
Sur la figure 2, on a représenté ces trois tronçons 32, 34, 36 emboîtés les uns dans les autres, mais il sera compris que cette configuration n'est pas limitative de l'invention et que lesdits tronçons 32, 34, 36 pourraient être venus de matière les uns avec les autres. Dans certaines configurations de véhicule, il peut être souhaitable de réduire la hauteur du capot 18. Dans cette configuration la nappe 20 de choc piéton peut théoriquement entrer en interférence avec des éléments supérieurs du moteur 14, notamment avec le conduit d'air 24, comme représenté à la figure 2. FIG. 2 shows these three sections 32, 34, 36 nested one inside the other, but it will be understood that this configuration is not limiting of the invention and that said sections 32, 34, 36 could be come from matter to each other. In certain vehicle configurations, it may be desirable to reduce the height of the hood 18. In this configuration the pedestrian crash pad 20 may theoretically interfere with upper elements of the engine 14, particularly with the air duct 24, as shown in Figure 2.
Le positionnement d'un conduit d'air 24 rigide dans la nappe 20 n'est pas admissible car il rendrait alors la nappe 20 de choc piéton inefficace, tout piéton projeté sur le capot 18 risquant alors de rencontrer le capot 18 localement rigidifié par ledit conduit d'air 24 et de se voir ainsi occasionner d'importantes lésions.  The positioning of a rigid air duct 24 in the web 20 is not admissible because it would then make the pedestrian impact sheet 20 ineffective, any pedestrian projected on the hood 18 then risking to meet the hood 18 locally stiffened by said air duct 24 and to be so cause significant lesions.
L'invention remédie à cet inconvénient en proposant un véhicule automobile du type décrit précédemment doté d'un conduit 24 d'air comportant une partie souple 28 agencée dans la nappe 20 de choc piéton, et qui à ce titre permet de conserver toute l'efficacité d'une telle nappe 20.  The invention overcomes this disadvantage by proposing a motor vehicle of the type described above with an air duct 24 having a flexible portion 28 arranged in the pedestrian impact sheet 20 and which, as such, makes it possible to retain all the effectiveness of such a web 20.
Dans ce but, comme l'illustrent les figures 3 et 4, l'invention propose un véhicule automobile du type décrit précédemment, caractérisé en ce que le tronçon intermédiaire 34 comporte une partie inférieure rigide 38 s'étendant parallèlement à un axe du conduit 24 en dehors de la nappe 20 de choc piéton et une partie supérieure 28 complémentaire et souple apte à se déformer.  For this purpose, as illustrated in FIGS. 3 and 4, the invention proposes a motor vehicle of the type described above, characterized in that the intermediate section 34 comprises a rigid lower portion 38 extending parallel to an axis of the duct 24. outside the pedestrian shock layer 20 and a complementary upper part 28 and flexible able to deform.
Il sera donc compris que le conduit 24 de sortie d'air comporte une partie 28 dudit conduit 24 de sortie d'air qui s'étend dans la nappe de choc piéton 20 et une partie rigide complémentaire 38 qui s'étend en dehors de la nappe 20 de choc piéton.  It will therefore be understood that the air outlet duct 24 comprises a portion 28 of said air outlet duct 24 which extends into the pedestrian impact ply 20 and a complementary rigid portion 38 which extends outside the duct. pedestrian shock sheet.
La partie rigide 38 n'est en effet pas préjudiciable à la nappe 20 de choc piéton. Il est donc préférable de conserver un conduit 24 comportant une partie rigide 38, ne serait-ce que dans cette configuration particulière pour assurer une fixation efficace du conduit 24 au turbocompresseur 26 et au refroidisseur 16. Comme l'illustre la figure 3, la partie inférieure rigide 38 du tronçon intermédiaire 34 comprend une extrémité avant 37 et une extrémité arrière 39 sensiblement tubulaires connectées respectivement au tronçon avant 36 et au tronçon arrière 32. The rigid portion 38 is not detrimental to the pedestrian impact sheet 20. It is therefore preferable to maintain a duct 24 comprising a rigid portion 38, if only in this particular configuration to ensure effective fastening of the duct 24 to the turbocharger 26 and to the cooler 16. As illustrated in FIG. 3, the rigid lower portion 38 of the intermediate section 34 comprises a substantially tubular front end 37 and a rear end 39 connected respectively to the front section 36 and to the rear section 32.
Comme l'illustre la figure 3 et 4, la partie inférieure rigide 38 comporte une échancrure longitudinale 30 s'étendant selon l'axe du conduit 24 sous la nappe 20 de choc piéton.  As illustrated in FIGS. 3 and 4, the rigid lower portion 38 comprises a longitudinal notch 30 extending along the axis of the duct 24 under the pedestrian impact sheet 20.
Plus particulièrement, l'échancrure 30 de la partie inférieure 38 du tronçon intermédiaire 34 qui a été représentée à la figure 3 comporte, comme l'illustre la figure 4, une bordure prolongée par une semelle 40 qui s'étend longitudinalement sous la nappe 20 de choc piéton et qui reçoit un pourtour 42 de fixation de la partie 28 supérieure souple dudit tronçon intermédiaire 34.  More particularly, the notch 30 of the lower portion 38 of the intermediate portion 34 which has been shown in FIG. 3 comprises, as illustrated in FIG. 4, a prolonged edge by a sole 40 which extends longitudinally under the ply 20 pedestrian shock and which receives a periphery 42 for fixing the flexible upper portion 28 of said intermediate section 34.
Comme représenté à la figure 3, le pourtour 42 s'étend aussi parallèlement au capot à proximité immédiate d'une limite inférieure "L" de la nappe 20 de choc piéton. En effet, le pourtour 42, qui est destiné à assurer la fixation de la partie supérieure souple 28, doit à ce titre bénéficier d'une rigidité permettant sa fixation étanche sur la semelle 40, et doit donc à ce titre être agencé hors de la nappe 20 de choc piéton.  As shown in FIG. 3, the periphery 42 also extends parallel to the hood in the immediate vicinity of a lower limit "L" of the pedestrian impact ply 20. Indeed, the periphery 42, which is intended to ensure the attachment of the flexible upper portion 28, must for this reason have a rigidity for its sealing on the base 40, and must therefore be arranged out of the pedestrian shock sheet.
Comme l'illustre la figure 5, la partie supérieure 28 comporte une portion souple 44 de paroi de conduit d'air dont des bords 46 sont sertis dans le pourtour 42 de fixation.  As shown in Figure 5, the upper portion 28 comprises a flexible portion 44 of air duct wall whose edges 46 are crimped in the perimeter 42 of attachment.
Cette portion 44 souple de paroi de conduit de la partie 28 supérieure souple est avantageusement réalisée en un matériau à base d'élastomère tel qu'un caoutchouc ou un silicone, mais il sera compris que tout autre matériau souple et étanche pourra convenir à la bonne mise en œuvre de l'invention.  This flexible pipe wall portion 44 of the flexible upper portion 28 is advantageously made of an elastomer-based material such as a rubber or a silicone, but it will be understood that any other flexible and waterproof material may be suitable for the right one. implementation of the invention.
De préférence, le pourtour 42 de fixation est de même matière que la semelle 40 de la partie inférieure 38 du tronçon intermédiaire 24.  Preferably, the perimeter 42 of attachment is of the same material as the sole 40 of the lower part 38 of the intermediate section 24.
Le pourtour 42 assure donc ainsi la rétention de la portion souple 44 de paroi de la partie 28 supérieure souple, tout en garantissant une étanchéité satisfaisante. Tout procédé connu de l'état de la technique peut convenir à la bonne fixation du pourtour 42 sur la semelle 40. Toutefois, dans le mode de réalisation préféré de l'invention, le pourtour 42 de la partie supérieure est fixé à la semelle 40 de la partie inférieure rigide par collage ou microvibrations. The periphery 42 thus ensures the retention of the flexible portion 44 of wall of the flexible upper portion 28, while ensuring a satisfactory seal. Any known method of the state of the art may be suitable for the proper fixing of the periphery 42 on the sole 40. However, in the preferred embodiment of the invention, the periphery 42 of the upper part is fixed to the sole 40 the rigid lower part by gluing or microvibration.
Dans le mode de réalisation préféré de l'invention, la partie inférieure rigide 38 du tronçon intermédiaire comporte des moyens de fixation 48 aptes à le maintenir solidaire de l'extrémité supérieure 22 du moteur 14. Ces moyens peuvent par exemple consiter en une contreforme 48 épousant la forme de l'éxtrémité supérieure du moteur 22, mais aussi en des moyens de fixation tels que des vis, ou des pions (non représentés).  In the preferred embodiment of the invention, the rigid lower portion 38 of the intermediate section includes fastening means 48 able to hold it integral with the upper end 22 of the motor 14. These means may for example consit into a counterfoil 48. following the shape of the upper end of the motor 22, but also in fixing means such as screws, or pins (not shown).
L'invention permet donc de réduire la hauteur d'un capot moteur 18 de véhicule automobile sans compromettre l'efficacité de la nappe 20 de choc piéton.  The invention therefore makes it possible to reduce the height of a motor vehicle hood 18 without compromising the effectiveness of the pedestrian shock sheet 20.

Claims

REVENDICATIONS
1. Véhicule automobile comportant au moins un élément de structure de caisse comportant un compartiment moteur (12) qui est destiné à recevoir un moteur (14) dudit véhicule et qui est fermé dans une partie supérieure par un capot (18), Motor vehicle comprising at least one body structure element comprising an engine compartment (12) which is intended to receive a motor (14) of said vehicle and which is closed in an upper part by a hood (18),
ledit capot (18) délimitant un jeu (J) de sécurité déterminant une nappe (20) de choc de piéton qui est interposée entre ledit capot (18) et une extrémité supérieure (22) du moteur (14) pour permettre une déformation dudit capot (18) dans ladite nappe en cas de réception d'un piéton sur le capot (18),  said cover (18) defining a clearance (J) of safety determining a pedestrian impact sheet (20) which is interposed between said cover (18) and an upper end (22) of the engine (14) to allow deformation of said cover (18) in said sheet when receiving a pedestrian on the hood (18),
ledit moteur (14) comportant au moins un conduit (24) d'air qui s'étend sur l'extrémité supérieure (22) du moteur (14) et comprenant un tronçon intermédiaire tubulaire qui s'étend longitudinalement dans la nappe (20) de choc piéton, et qui est connecté à un tronçon avant et à tronçon arrière,  said motor (14) having at least one air duct (24) extending over the upper end (22) of the motor (14) and comprising a tubular intermediate section extending longitudinally in the web (20) pedestrian shock, and which is connected to a front section and a rear section,
caractérisé en ce que le tronçon intermédiaire comporte une partie inférieure rigide (38) s'étendant parallèlement à l'axe du conduit (24) en dehors de la nappe (20) de choc piéton et une partie supérieure complémentaire et souple apte à se déformer.  characterized in that the intermediate section comprises a rigid lower portion (38) extending parallel to the axis of the duct (24) outside the pedestrian impact layer (20) and a complementary and flexible upper portion adapted to deform .
2. Véhicule automobile selon la revendication précédente, caractérisé en ce que la partie inférieure rigide (38) du tronçon intermédiaire (34) comprend une extrémité avant et une extrémité arrière sensiblement tubulaires connectées respectivement au tronçon avant et au tronçon arrière.  2. Motor vehicle according to the preceding claim, characterized in that the rigid lower portion (38) of the intermediate portion (34) comprises a substantially tubular front end and a rear end respectively connected to the front section and the rear section.
3. Véhicule automobile selon la revendication précédente, caractérisé en ce que la partie inférieure rigide comporte une échancrure longitudinale s'étendant selon l'axe sous la nappe de choc piéton.  3. Motor vehicle according to the preceding claim, characterized in that the rigid lower portion comprises a longitudinal recess extending along the axis under the pedestrian impact ply.
4. Véhicule automobile selon la revendication précédente, caractérisé en ce que l'échancrure de la partie inférieure du tronçon intermédiaire comporte une bordure prolongée par une semelle (40) qui s'étend longitudinalement sous la nappe (20) de choc piéton et qui reçoit un pourtour (42) de fixation de la partie (28) supérieure souple dudit tronçon intermédiaire (34). 4. Motor vehicle according to the preceding claim, characterized in that the indentation of the lower portion of the intermediate portion comprises a prolonged edge by a sole (40) extending longitudinally under the sheet (20) of pedestrian shock and which receives a periphery (42) for fixing the flexible upper portion (28) of said intermediate section (34).
5. Véhicule automobile selon la revendication précédente, caractérisé en ce que la partie supérieure (28) comporte une portion souple (44) de paroi de conduit d'air dont des bords (46) sont sertis dans le pourtour (42) de fixation.  5. Motor vehicle according to the preceding claim, characterized in that the upper portion (28) comprises a flexible portion (44) of air duct wall whose edges (46) are crimped in the periphery (42) of attachment.
6. Véhicule automobile selon la revendication précédente, caractérisé en ce que la portion (44) souple de paroi de conduit de la partie supérieure souple est réalisée en un matériau à base d'élastomère tel qu'un caoutchouc ou un silicone.  6. Motor vehicle according to the preceding claim, characterized in that the flexible portion (44) of duct wall of the flexible upper portion is made of an elastomeric material such as rubber or silicone.
7. Véhicule automobile selon la revendication précédente, caractérisé en ce que la partie inférieure rigide du tronçon intermédiare comporte des moyens de fixation aptes à le maintenir solidaire de l'extrémité supérieure du moteur.  7. Motor vehicle according to the preceding claim, characterized in that the rigid lower portion of the intermediate section comprises fastening means adapted to maintain it secured to the upper end of the engine.
8. Véhicule automobile selon la revendication précédente, caractérisé en ce que le poutour (42) de fixation est de même matière que la semelle (40) de la partie inférieure du tronçon intermédiaire.  8. Motor vehicle according to the preceding claim, characterized in that the poutour (42) of attachment is of the same material as the sole (40) of the lower part of the intermediate section.
9. Véhicule automobile selon la revendication précédente, caractérisé en ce que le pourtour (42) de la partie supérieure est fixé à la semelle (40) de la partie inférieure rigide par collage ou microvibrations.  9. Motor vehicle according to the preceding claim, characterized in that the periphery (42) of the upper part is fixed to the sole (40) of the rigid lower part by gluing or microvibrations.
PCT/FR2015/050670 2014-04-03 2015-03-19 Motor vehicle comprising a partly flexible turbocompressor air outlet duct WO2015150657A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1452981 2014-04-03
FR1452981A FR3019511B1 (en) 2014-04-03 2014-04-03 "AUTOMOTIVE VEHICLE COMPRISING A SOFT PARTLY TURBOCHARGER AIR OUTPUT DUCT"

Publications (1)

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WO2015150657A1 true WO2015150657A1 (en) 2015-10-08

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FR (1) FR3019511B1 (en)
WO (1) WO2015150657A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614590A2 (en) * 2004-07-06 2006-01-11 Volkswagen Aktiengesellschaft Bonnet
DE102004054274A1 (en) * 2004-11-09 2006-05-11 Mann + Hummel Gmbh Intake system for the internal combustion engine of a vehicle
EP1854681A2 (en) * 2006-05-08 2007-11-14 TRW Automotive Electronics & Components GmbH & Co. KG Air duct for motor vehicle
FR2921308A3 (en) * 2007-09-20 2009-03-27 Renault Sas Air inlet pipe for use with air filter supplying air inlet of internal combustion engine of motor vehicle, has tubular shape air duct retracted to contact elements situated under surface when bonnet sags to absorb shock applied on bonnet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614590A2 (en) * 2004-07-06 2006-01-11 Volkswagen Aktiengesellschaft Bonnet
DE102004054274A1 (en) * 2004-11-09 2006-05-11 Mann + Hummel Gmbh Intake system for the internal combustion engine of a vehicle
EP1854681A2 (en) * 2006-05-08 2007-11-14 TRW Automotive Electronics & Components GmbH & Co. KG Air duct for motor vehicle
FR2921308A3 (en) * 2007-09-20 2009-03-27 Renault Sas Air inlet pipe for use with air filter supplying air inlet of internal combustion engine of motor vehicle, has tubular shape air duct retracted to contact elements situated under surface when bonnet sags to absorb shock applied on bonnet

Also Published As

Publication number Publication date
FR3019511A1 (en) 2015-10-09
FR3019511B1 (en) 2016-03-25

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