WO2019150007A1 - A motor vehicle with exhaust hanger cutting wire - Google Patents

A motor vehicle with exhaust hanger cutting wire Download PDF

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Publication number
WO2019150007A1
WO2019150007A1 PCT/FR2018/053187 FR2018053187W WO2019150007A1 WO 2019150007 A1 WO2019150007 A1 WO 2019150007A1 FR 2018053187 W FR2018053187 W FR 2018053187W WO 2019150007 A1 WO2019150007 A1 WO 2019150007A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
motor vehicle
vehicle
silencer
damping element
Prior art date
Application number
PCT/FR2018/053187
Other languages
French (fr)
Inventor
Loic Bourdin
Julien Chapel
Martin RIBAULT-MENETIERE
Original Assignee
Psa Automobiles Sa
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 Psa Automobiles Sa filed Critical Psa Automobiles Sa
Publication of WO2019150007A1 publication Critical patent/WO2019150007A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0416—Arrangement in the rear part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K2015/0634—Arrangement of tanks the fuel tank is arranged below the vehicle floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K2015/0638—Arrangement of tanks the fuel tank is arranged in the rear of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection

Definitions

  • the present invention relates to a motor vehicle.
  • the invention relates more particularly to a motor vehicle equipped with exhaust suspension cut wire.
  • the battery module is installed at the rear of the vehicle near the bumper, being interposed between the rear axle of the vehicle, considered to be a non-deformable element, and the rear bumper, considered to be a deformable element in the event of a rear impact. In the event of a collision, the rear bumper may move or deform. This situation is likely to cause damage to the battery module.
  • the exhausts are conventionally attached to the vehicle via a hook welded to the muffler and a line that binds the hook and therefore the muffler to the chassis, this line comprising a rubber material to absorb the movements between the exhaust and the vehicle (travel engine, ease of removal / installation, differential thermal expansion, vibration decoupling, ).
  • These lines can be entwined by a strap to maintain the structure when the line is completely rubber or can be with a solid core to ensure the rigidity of all and ensure the recovery of efforts during the trepidations of the road or small shocks.
  • a motor vehicle comprising:
  • an exhaust rear silencer attached to the chassis via an exhaust suspension having a damping element
  • this vehicle further comprising a wire comprising two ends, the wire and its two ends being arranged relative to the damping element so that during a longitudinal displacement of at least one of the ends of the wire relative to the damping element of the hanger, such longitudinal displacement occurring during an impact on the rear of the vehicle, the wire just cut the damping element.
  • the technical effect is to deflect the silencer from a longitudinal impact trajectory by allowing the silencer to fall by gravity once the damping element of its hanger sectioned.
  • one of the ends of the wire is attached to a pusher which is driven by longitudinal displacement occurring during an impact on the rear of the vehicle.
  • a pusher allows to transmit directly, without response time, displacement due to shock and thus cut the damping element before a possible longitudinal thrust of the silencer.
  • the pusher is attached to a rear bumper beam. This piece is indeed the first impacted by a displacement due to the rear impact.
  • the other end of the wire is attached to the muffler or chassis.
  • one end of the wire is attached to the muffler. In this embodiment, the other end of the wire is then attached to the muffler or chassis. This achievement is simpler and more economical.
  • the motor vehicle comprises sensitive equipment disposed in front of the silencer.
  • the sensitive equipment is a battery module or a fluid reservoir or a fuel tank.
  • FIG. 1 is a schematic representation of a motor vehicle according to the invention.
  • FIG. 2 is a schematic representation of a first embodiment of the invention.
  • FIG. 3 is a schematic representation of a second embodiment of the invention.
  • FIG. 4 is a schematic representation of a third embodiment of the invention.
  • FIG. 5 is a schematic representation of a fourth embodiment of the invention.
  • FIG. 1 represents a motor vehicle 1 comprising a heat engine 2 disposed at the front of the vehicle 1 in the engine compartment.
  • the combustion gases of the heat engine 2 are discharged through an exhaust line 3 of the combustion gases which extends from the outlet of the combustion cylinders of the engine 2 to an orifice disposed behind the vehicle 1 at the level of the engine. a rear bumper 4.
  • the exhaust line 3 comprises several gas processing members which will not be the subject of a detailed description.
  • the exhaust line 3 comprises in particular a rear silencer 5, of substantially cylindrical shape, which extends in the transverse direction of the vehicle 1, parallel to the rear bumper shield 4.
  • the silencer 5 is fixed to the chassis 6 via an exhaust line 7.
  • the silencer 5 comprises a hook 8, for example welded to the silencer 5.
  • the hook is attached to an elastomer portion 7a of the hanger 7, this elastomeric portion being itself mechanically connected to the hanger 7 fixed to the frame 6 of the vehicle 1.
  • the hanger 7 is in particular disposed under the trunk compartment of the vehicle 1.
  • the vehicle 1 also comprises a sensitive equipment 9, for example, in the case of a hybrid vehicle, a battery module, for supplying power to an electric traction machine and, where appropriate, storing electrical energy. generated by this machine when it is operating in generator mode.
  • the battery module 9 is disposed in this configuration under the trunk compartment of the vehicle 1, close to and opposite the silencer 5.
  • the equipment mounted in the rear part of the vehicle 1 are arranged in the next order after the rear bumper 4 in the longitudinal direction of the vehicle 1, in the direction from the rear to the front: the silencer 5 and then directly vis-à-vis the battery module 5, then a rear wheel axle 10 of the vehicle 1, the latter being considered as non-deformable and non-movable from its initial mounting position on the chassis 6 of the vehicle 1.
  • the longitudinal direction is also visible in Figure 2, represented by the X axis, front and rear being defined relative to this longitudinal axis X, in the usual sense to define the front and rear of a vehicle.
  • the rear silencer 5 is likely to follow a shock path that may damage the battery module 9, due to its deformation or displacement resulting from the shock, and because of the vice of the battery module between the silencer 5 and the rear wheel train 10 not deformable.
  • the invention aims to protect the battery module 9 from an impact having a shock force F occurring at the rear of the vehicle 1 in a longitudinal direction X of the vehicle 1.
  • the vehicle 1 comprises a wire 1 1 with two ends, the arrangement of the wire and the ends with respect to the damping element 7a of the suspension 7 being chosen so that during a displacement in the longitudinal direction X of at least one of the ends of the wire relative to damping element 7a of the hanger 7, such longitudinal displacement occurring during a shock F on the rear of the vehicle 1, while the displacement takes place, the wire comes into contact with the damping element 7a and then cuts the damping element 7a.
  • the wire can be stretched to sever the damping element.
  • the wire may be in a material sufficiently strong to be able to slice the element 7a damping elastomer without breaking.
  • the wire 11 may thus be metallic, for example steel or synthetic, for example nylon.
  • the muffler 5 is then no longer directly attached to the frame 6 and can fall by its own weight and avoid holding against the battery module 9.
  • Figure 2 shows a first embodiment of the invention.
  • the wire 1 1 is hooked by its two ends on a pusher 12 and surrounds the damping element 7a.
  • the two ends of the wire 1 1 are located relative to the element 7a damping in front thereof and the wire passes behind the damping element 7a.
  • This pusher 12 is here attached to a beam 13 of the rear bumper.
  • the beam 13 moves in the longitudinal direction X due to the collapse of these beam supports 14 and the pusher 12 is driven longitudinally by the displacement of the beam 13.
  • the wire is first tensioned in contact with the element 7a damping and then gradually cut the elastomer of the damping element 7a.
  • the pusher is provided to be rigid enough not to twist when slicing the elastomer of the damping member 7a.
  • Figure 3 shows a second embodiment of the invention.
  • the wire 1 1 is hooked by its two ends to the rear silencer 5 and surrounds the damping element 7a.
  • the two ends of the wire 1 1 are located relative to the element 7a damping in front thereof and the wire passes behind the damping element 7a.
  • the silencer 5 moves (arrow D) in the longitudinal direction X because of the rear impact F.
  • the wire 1 1 comes first to tender in contact with the element 7a damping and then gradually cut the elastomer of the damping element 7a.
  • Figure 4 shows another embodiment.
  • the wire 1 1 is hooked with one of its ends which is fixed on the muffler 5 and one of its ends which is fixed on the frame 6.
  • the two ends of the wire 1 1 are located relative to the element 7a damping in front of it and the wire passes behind the damping element 7a.
  • the muffler 5 moves (arrow D) in the longitudinal direction X because of the rear impact F.
  • the end of the wire fixed to the chassis does not move relative to the suspension 7, but that fixed to the silencer 5 follows the movement of the latter.
  • the wire 1 1 is therefore tensioned in contact with the damping element 7a and then gradually cut the elastomer of the damping element 7a.
  • Figure 5 shows another embodiment.
  • the wire 1 1 is hooked with one of its ends which is fixed on a pusher 12 and one of its ends which is fixed on the frame 6.
  • the two ends of the wire 1 1 are located relative to the element 7a damping in front of it and the wire passes behind the damping element 7a.
  • the pusher 12 is attached to a beam 13 of the rear bumper.
  • the pusher 12 moves (arrow D) in the longitudinal direction X by the displacement of the beam 13.
  • the end of the wire fixed to the frame does not move relative to the hanger 7, but that attached to the pusher 12 follows the movement of the latter.
  • the wire 1 1 is therefore tensioned in contact with the damping element 7a and then gradually cut the elastomer of the damping element 7a.
  • the sensitive equipment may for example be a fluid reservoir such as fuel. Sensitive equipment may not be present.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention relates to a motor vehicle (1) comprising a chassis (6), a rear exhaust silencer (5) fixed to the chassis (6) by an exhaust hanger (7) comprising a shock-absorbing element (7a), characterized in that this vehicle additionally comprises a wire (11) having two ends, the wire (11) and its two ends being arranged relative to the shock-absorbing element (7a) in such a way that in the event of a longitudinal movement of at least one of the ends of the wire relative to the shock-absorbing element (7a) of the hanger (7), such a longitudinal movement occurring in the event of a rear impact on the vehicle (1), the wire cuts through the shock-absorbing element (7a).

Description

VEHICULE AUTOMOBILE A FIL DE COUPURE DE SUSPENTE  MOTOR VEHICLE WITH SUSPENSION WIRE
D’ECHAPPEMENT  EXHAUST
La présente invention se rapporte à un véhicule automobile. L’invention concerne plus particulièrement un véhicule automobile équipé de fil de coupure de suspente d’échappement. The present invention relates to a motor vehicle. The invention relates more particularly to a motor vehicle equipped with exhaust suspension cut wire.
Les véhicules hybrides et électriques embarquent des équipements sensibles et onéreux que les constructeurs cherchent à protéger des impacts, c’est le cas notamment des modules de batterie de traction. Dans certains véhicules, le module de batterie est installé à l’arrière du véhicule à proximité du pare-chocs en étant intercalé entre le train arrière du véhicule, considéré comme étant un élément non déformable, et le pare-chocs arrière, considéré comme étant un élément déformable en cas d’impact arrière. En cas de collision, il arrive que le pare-chocs arrière se déplace ou se déforme. Cette situation est susceptible de provoquer un endommagement du module de batterie. Hybrid and electric vehicles embark on sensitive and expensive equipment that manufacturers seek to protect impacts, such as traction battery modules. In certain vehicles, the battery module is installed at the rear of the vehicle near the bumper, being interposed between the rear axle of the vehicle, considered to be a non-deformable element, and the rear bumper, considered to be a deformable element in the event of a rear impact. In the event of a collision, the rear bumper may move or deform. This situation is likely to cause damage to the battery module.
Par ailleurs, les échappements sont classiquement fixés au véhicule via un crochet soudé sur le silencieux et une suspente qui lie ce crochet et donc le silencieux au châssis, cette suspente comprenant un matériau caoutchouc pour absorber les débattements entre l’échappement et le véhicule (débattement du moteur, facilité de dépose/repose, dilatation thermique différentielle, découplage vibratoire, ...). Ces suspentes peuvent être enlacées par une lanière permettant de maintenir la structure quand la suspente est totalement caoutchouc ou peuvent être avec une âme solide pour garantir la rigidité de l’ensemble et assurer les reprises d’efforts lors des trépidations de la route ou des petits chocs. Furthermore, the exhausts are conventionally attached to the vehicle via a hook welded to the muffler and a line that binds the hook and therefore the muffler to the chassis, this line comprising a rubber material to absorb the movements between the exhaust and the vehicle (travel engine, ease of removal / installation, differential thermal expansion, vibration decoupling, ...). These lines can be entwined by a strap to maintain the structure when the line is completely rubber or can be with a solid core to ensure the rigidity of all and ensure the recovery of efforts during the trepidations of the road or small shocks.
On connaît encore de l’état de la technique des solutions visant à absorber l’énergie d’impact en cas de collision du véhicule. Par exemple, le document US9409601 B2 enseigne l'utilisation d'un moyen de détection d’un impact déclenchant des charges explosives de vis de fixation du train de roues afin de libérer partiellement le train de roues du châssis. Une fois la liaison rompue, cette solution permet un déplacement du train de roues vers l’arrière du véhicule sous l’action de la force de l’impact. Le déplacement du train de roues permet de libérer de l’espace dans le compartiment moteur pour une meilleure absorption du choc et une meilleure protection des passagers. Cependant, cette solution ne permet pas de préserver certains équipements sensibles lors de l’impact, comme le module de batterie du véhicule hybride. Par conséquent, le problème à la base de l’invention est d’éviter que lors d’un choc, le silencieux vienne générer un effort important sur le module de batterie qui viendrait à se dégrader alors que c’est un constituant très sensible sur un véhicule hydride. The state of the art is still known of solutions for absorbing the impact energy in the event of a collision of the vehicle. For example, the document US9409601 B2 teaches the use of an impact detection means triggering explosive charges of fixing screw of the wheel train in order to partially release the wheelset of the chassis. Once the link broken, this solution allows a movement of the wheel train to the rear of the vehicle under the action of the force of the impact. Moving the wheel assembly frees up space in the engine compartment for better shock absorption and better passenger protection. However, this solution does not preserve some sensitive equipment during the impact, such as the battery module of the hybrid vehicle. Therefore, the problem underlying the invention is to avoid that during a shock, the muffler comes to generate a significant effort on the battery module that would degrade while it is a very sensitive component on a hybrid vehicle.
Pour résoudre ce problème, il est prévu selon l’invention un véhicule automobile comportant : To solve this problem, it is provided according to the invention a motor vehicle comprising:
-un châssis,  -a chassis,
-un silencieux arrière d'échappement fixé au châssis par l'intermédiaire d'une suspente d'échappement comportant un élément amortissant, ce véhicule comprenant de plus un fil comprenant deux extrémités, le fil et ses deux extrémités étant disposés par rapport à l’élément amortissant de sorte que lors d’un déplacement longitudinal d’au moins une des extrémités du fil relativement à l’élément amortissant de la suspente, un tel déplacement longitudinal se produisant lors d’un choc sur l’arrière du véhicule, le fil vient sectionner l’élément amortissant.  an exhaust rear silencer attached to the chassis via an exhaust suspension having a damping element, this vehicle further comprising a wire comprising two ends, the wire and its two ends being arranged relative to the damping element so that during a longitudinal displacement of at least one of the ends of the wire relative to the damping element of the hanger, such longitudinal displacement occurring during an impact on the rear of the vehicle, the wire just cut the damping element.
L’effet technique est de dévier le silencieux d’une trajectoire de choc longitudinale en permettant au silencieux de tomber par gravité une fois l’élément amortissant de sa suspente sectionnée. The technical effect is to deflect the silencer from a longitudinal impact trajectory by allowing the silencer to fall by gravity once the damping element of its hanger sectioned.
Diverses caractéristiques supplémentaires peuvent être prévues, seules ou en combinaisons : Various additional features may be provided, alone or in combinations:
Dans une réalisation, une des extrémités du fil est fixée à un poussoir qui est entraîné par déplacement longitudinal se produisant lors d’un choc sur l’arrière du véhicule. L’usage d’un poussoir permets de transmettre directement, sans temps de réponse, le déplacement dû au choc et ainsi couper l’élément amortissant avant une éventuelle poussée longitudinale du silencieux. In one embodiment, one of the ends of the wire is attached to a pusher which is driven by longitudinal displacement occurring during an impact on the rear of the vehicle. The use of a pusher allows to transmit directly, without response time, displacement due to shock and thus cut the damping element before a possible longitudinal thrust of the silencer.
Dans une réalisation, le poussoir est fixé à une poutre de pare-chocs arrière. Cette pièce est en effet la première impactée par un déplacement dû au choc arrière. In one embodiment, the pusher is attached to a rear bumper beam. This piece is indeed the first impacted by a displacement due to the rear impact.
Dans cette réalisation avec poussoir, l’autre des extrémités du fil est fixée au silencieux ou au châssis. In this embodiment with pusher, the other end of the wire is attached to the muffler or chassis.
Dans une autre réalisation, une des extrémités du fil est fixée au silencieux. Dans cette réalisation, l’autre extrémité du fil est alors fixée au silencieux ou au châssis. Cette réalisation est plus simple et économique. In another embodiment, one end of the wire is attached to the muffler. In this embodiment, the other end of the wire is then attached to the muffler or chassis. This achievement is simpler and more economical.
Dans une réalisation, le véhicule automobile comporte un équipement sensible disposé en avant du silencieux. In one embodiment, the motor vehicle comprises sensitive equipment disposed in front of the silencer.
Dans une réalisation, l’équipement sensible est un module de batterie ou un réservoir de fluide ou un réservoir de carburant. In one embodiment, the sensitive equipment is a battery module or a fluid reservoir or a fuel tank.
D’autres particularités et avantages apparaîtront à la lecture de la description ci-après d’un mode particulier de réalisation, non limitatif de l’invention, faite en référence aux figures dans lesquelles : Other features and advantages will appear on reading the following description of a particular embodiment, not limiting of the invention, with reference to the figures in which:
- La figure 1 est une représentation schématique d’un véhicule automobile conforme à l’invention. - Figure 1 is a schematic representation of a motor vehicle according to the invention.
- La figure 2 est une représentation schématique d’un premier mode de réalisation de l’invention.  FIG. 2 is a schematic representation of a first embodiment of the invention.
- La figure 3 est une représentation schématique d’un second mode de réalisation de l’invention.  FIG. 3 is a schematic representation of a second embodiment of the invention.
- La figure 4 est une représentation schématique d’un troisième mode de réalisation de l’invention.  FIG. 4 is a schematic representation of a third embodiment of the invention.
- La figure 5 est une représentation schématique d’un quatrième mode de réalisation de l’invention.  FIG. 5 is a schematic representation of a fourth embodiment of the invention.
La figure 1 représente un véhicule automobile 1 comportant un moteur thermique 2 disposé en partie avant du véhicule 1 dans le compartiment moteur. Les gaz de combustion du moteur thermique 2 sont évacués par une ligne d’échappement 3 des gaz de combustion qui s’étend de la sortie des cylindres de combustion du moteur thermique 2 jusqu’à un orifice disposé en arrière du véhicule 1 au niveau d’un pare-chocs arrière 4. FIG. 1 represents a motor vehicle 1 comprising a heat engine 2 disposed at the front of the vehicle 1 in the engine compartment. The combustion gases of the heat engine 2 are discharged through an exhaust line 3 of the combustion gases which extends from the outlet of the combustion cylinders of the engine 2 to an orifice disposed behind the vehicle 1 at the level of the engine. a rear bumper 4.
La ligne d’échappement 3 comporte plusieurs organes de traitement des gaz qui ne feront pas l’objet d’une description détaillée. Dans cette configuration du véhicule 1 , la ligne d’échappement 3 comporte notamment un silencieux arrière 5, de forme sensiblement cylindrique, qui s’étend dans la direction transversale du véhicule 1 , parallèlement au pare pare-chocs arrière 4. Le silencieux 5 est fixé au châssis 6 par l’intermédiaire d’une suspente d’échappement 7. A cet effet, le silencieux 5 comporte un crochet 8, par exemple soudé au silencieux 5. Le crochet est accroché à une partie élastomère 7a de la suspente 7, cette partie élastomère étant elle-même liée mécaniquement à la suspente 7 fixée au châssis 6 du véhicule 1 . La suspente 7 est notamment disposée sous le compartiment du coffre du véhicule 1 . The exhaust line 3 comprises several gas processing members which will not be the subject of a detailed description. In this configuration of the vehicle 1, the exhaust line 3 comprises in particular a rear silencer 5, of substantially cylindrical shape, which extends in the transverse direction of the vehicle 1, parallel to the rear bumper shield 4. The silencer 5 is fixed to the chassis 6 via an exhaust line 7. For this purpose, the silencer 5 comprises a hook 8, for example welded to the silencer 5. The hook is attached to an elastomer portion 7a of the hanger 7, this elastomeric portion being itself mechanically connected to the hanger 7 fixed to the frame 6 of the vehicle 1. The hanger 7 is in particular disposed under the trunk compartment of the vehicle 1.
Par ailleurs, le véhicule 1 comporte également un équipement sensible 9, par exemple, dans le cas d’un véhicule hybride, un module de batterie, pour fournir de l'énergie à une machine électrique de traction et le cas échéant stocker une énergie électrique générée par cette machine lorsque cette dernière fonctionne en mode générateur. Le module de batterie 9 est disposé dans cette configuration sous le compartiment du coffre du véhicule 1 , à proximité et en vis-à-vis du silencieux 5. On notera que les équipements montés dans la partie arrière du véhicule 1 sont disposés dans l’ordre suivant après le pare-chocs arrière 4 selon la direction longitudinale du véhicule 1 , dans le sens allant de l’arrière vers l’avant : le silencieux 5 puis, directement en vis-à-vis, le module de batterie 5, puis un train de roue arrière 10 du véhicule 1 , ce dernier étant considéré comme non déformable et non déplaçable de sa position de montage initiale sur le châssis 6 du véhicule 1 . La direction longitudinale est également visible à la figure 2, représentée par l’axe X, avant et arrière étant définis relativement à cet axe longitudinal X, selon le sens habituel pour définir l’avant et l’arrière d’un véhicule. Furthermore, the vehicle 1 also comprises a sensitive equipment 9, for example, in the case of a hybrid vehicle, a battery module, for supplying power to an electric traction machine and, where appropriate, storing electrical energy. generated by this machine when it is operating in generator mode. The battery module 9 is disposed in this configuration under the trunk compartment of the vehicle 1, close to and opposite the silencer 5. Note that the equipment mounted in the rear part of the vehicle 1 are arranged in the next order after the rear bumper 4 in the longitudinal direction of the vehicle 1, in the direction from the rear to the front: the silencer 5 and then directly vis-à-vis the battery module 5, then a rear wheel axle 10 of the vehicle 1, the latter being considered as non-deformable and non-movable from its initial mounting position on the chassis 6 of the vehicle 1. The longitudinal direction is also visible in Figure 2, represented by the X axis, front and rear being defined relative to this longitudinal axis X, in the usual sense to define the front and rear of a vehicle.
Lors d’un impact intervenant à l’arrière du véhicule 1 , un effort F s’applique tendant à écraser l’arrière du véhicule. Ainsi, le silencieux arrière 5 est susceptible de suivre une trajectoire de choc pouvant endommager le module de batterie 9, de par sa déformation ou son déplacement résultant du choc, et du fait de la prise en étau du module de batterie entre le silencieux 5 et le train de roue arrière 10 non déformable. During an impact occurring at the rear of the vehicle 1, a force F applies tending to crush the rear of the vehicle. Thus, the rear silencer 5 is likely to follow a shock path that may damage the battery module 9, due to its deformation or displacement resulting from the shock, and because of the vice of the battery module between the silencer 5 and the rear wheel train 10 not deformable.
L’invention vise à protéger le module de batterie 9 d’un impact ayant une force de choc F intervenant à l’arrière du véhicule 1 selon une direction longitudinale X du véhicule 1 . The invention aims to protect the battery module 9 from an impact having a shock force F occurring at the rear of the vehicle 1 in a longitudinal direction X of the vehicle 1.
A cet effet, il est prévue que le véhicule 1 comporte un fil 1 1 avec deux extrémités, la disposition du fil et des extrémités par rapport à l’élément 7a amortissant de la suspente 7 étant choisies de sorte que lors d’un déplacement dans la direction X longitudinale d’au moins une des extrémités du fil relativement à élément 7a amortissant de la suspente 7, un tel déplacement longitudinal se produisant lors d’un choc F sur l’arrière du véhicule 1 , tandis que le déplacement se déroule, le fil vient au contact de l’élément 7a amortissant puis sectionne l’élément 7a amortissant. En effet, dès lors qu’une des extrémités du fil est mobile par rapport à la suspente et à son élément amortissant pendant le choc, le fil peut se tendre jusqu’à sectionner l’élément amortissant. For this purpose, it is provided that the vehicle 1 comprises a wire 1 1 with two ends, the arrangement of the wire and the ends with respect to the damping element 7a of the suspension 7 being chosen so that during a displacement in the longitudinal direction X of at least one of the ends of the wire relative to damping element 7a of the hanger 7, such longitudinal displacement occurring during a shock F on the rear of the vehicle 1, while the displacement takes place, the wire comes into contact with the damping element 7a and then cuts the damping element 7a. Indeed, since one of the ends of the wire is mobile relative to the suspension and its damping element during the shock, the wire can be stretched to sever the damping element.
Le fil peut être dans une matière suffisamment solide pour pouvoir trancher l’élément 7a amortissant en élastomère sans casser. Le fil 1 1 peut ainsi être métallique, par exemple en acier ou synthétique, par exemple en nylon. The wire may be in a material sufficiently strong to be able to slice the element 7a damping elastomer without breaking. The wire 11 may thus be metallic, for example steel or synthetic, for example nylon.
Une fois l’élément 7a amortissant sectionné, le silencieux 5 n’est alors plus directement rattaché au châssis 6 et peut tomber par son propre poids et éviter le maintien contre le module de batterie 9. Once the damping element 7a sectioned, the muffler 5 is then no longer directly attached to the frame 6 and can fall by its own weight and avoid holding against the battery module 9.
La figure 2 présente un premier mode de réalisation de l’invention. Dans ce premier mode de réalisation, le fil 1 1 est accroché par ses deux extrémités sur un poussoir 12 et entoure l’élément 7a amortissant. Les deux extrémités du fil 1 1 sont situées par rapport à l’élément 7a amortissant en avant de celui-ci et le fil passe en arrière de l’élément 7a amortissant. Ce poussoir 12 est ici fixé à une poutre 13 de pare-chocs arrière. Ainsi, en cas de choc arrière F, la poutre 13 se déplace dans la direction longitudinale X en raison de l’écrasement de ces appuis 14 de poutre et le poussoir 12 est entraîné longitudinalement par le déplacement de la poutre 13. Au cours du déroulement du déplacement longitudinal du poussoir 12, le fil vient d’abord se tendre au contact de l’élément 7a amortissant puis sectionner progressivement l’élastomère de l’élément 7a amortissant. Figure 2 shows a first embodiment of the invention. In this first embodiment, the wire 1 1 is hooked by its two ends on a pusher 12 and surrounds the damping element 7a. The two ends of the wire 1 1 are located relative to the element 7a damping in front thereof and the wire passes behind the damping element 7a. This pusher 12 is here attached to a beam 13 of the rear bumper. Thus, in the event of a rear impact F, the beam 13 moves in the longitudinal direction X due to the collapse of these beam supports 14 and the pusher 12 is driven longitudinally by the displacement of the beam 13. During the course longitudinal displacement of the pusher 12, the wire is first tensioned in contact with the element 7a damping and then gradually cut the elastomer of the damping element 7a.
Le poussoir est prévu pour être suffisamment rigide pour ne pas se tordre lorsqu’il tranche l’élastomère de l’élément 7a amortissant. The pusher is provided to be rigid enough not to twist when slicing the elastomer of the damping member 7a.
Cette solution permet de libérer le silencieux 5 arrière de la structure sans effort direct sur les pièces d’échappement et de permettre au silencieux de descendre dès le début du choc F afin de passer ici sous le module de batterie 9 avant d’entrer en contact avec celui-ci. This solution makes it possible to release the rear silencer 5 of the structure without any direct effort on the exhaust parts and to allow the silencer to descend as soon as the shock F begins, to pass here under the battery module 9 before coming into contact. with this one.
La figure 3 présente un second mode de réalisation de l’invention. Dans ce mode de réalisation le fil 1 1 est accroché par ses deux extrémités au silencieux 5 arrière et entoure l’élément 7a amortissant. Les deux extrémités du fil 1 1 sont situées par rapport à l’élément 7a amortissant en avant de celui-ci et le fil passe en arrière de l’élément 7a amortissant. Ainsi, en cas de choc arrière F, le silencieux 5 se déplace (flèche D) dans la direction longitudinale X en raison du choc arrière F. Au cours du déroulement du déplacement longitudinal du silencieux 5, le fil 1 1 vient d’abord se tendre au contact de l’élément 7a amortissant puis sectionner progressivement l’élastomère de l’élément 7a amortissant. La figure 4 présente un autre mode de réalisation. Dans ce mode de réalisation, le fil 1 1 est accroché avec une de ses extrémités qui est fixée sur le silencieux 5 et une de ses extrémités qui est fixée sur le châssis 6. Les deux extrémités du fil 1 1 sont situées par rapport à l’élément 7a amortissant en avant de celui-ci et le fil passe en arrière de l’élément 7a amortissant. Ainsi, en cas de choc arrière F, le silencieux 5 se déplace (flèche D) dans la direction longitudinale X en raison du choc arrière F. L’extrémité du fil fixée au châssis ne bouge pas relativement à la suspente 7, mais celle fixée au silencieux 5 suit le mouvement de ce dernier. Au cours du déroulement du déplacement longitudinal du silencieux 5, le fil 1 1 vient donc se tendre au contact de l’élément 7a amortissant puis sectionner progressivement l’élastomère de l’élément 7a amortissant. Figure 3 shows a second embodiment of the invention. In this embodiment the wire 1 1 is hooked by its two ends to the rear silencer 5 and surrounds the damping element 7a. The two ends of the wire 1 1 are located relative to the element 7a damping in front thereof and the wire passes behind the damping element 7a. Thus, in the event of a rear impact F, the silencer 5 moves (arrow D) in the longitudinal direction X because of the rear impact F. During the course of the longitudinal movement of the silencer 5, the wire 1 1 comes first to tender in contact with the element 7a damping and then gradually cut the elastomer of the damping element 7a. Figure 4 shows another embodiment. In this embodiment, the wire 1 1 is hooked with one of its ends which is fixed on the muffler 5 and one of its ends which is fixed on the frame 6. The two ends of the wire 1 1 are located relative to the element 7a damping in front of it and the wire passes behind the damping element 7a. Thus, in the event of a rear impact F, the muffler 5 moves (arrow D) in the longitudinal direction X because of the rear impact F. The end of the wire fixed to the chassis does not move relative to the suspension 7, but that fixed to the silencer 5 follows the movement of the latter. During the course of the longitudinal movement of the silencer 5, the wire 1 1 is therefore tensioned in contact with the damping element 7a and then gradually cut the elastomer of the damping element 7a.
La figure 5 présente un autre mode de réalisation. Dans ce mode de réalisation, le fil 1 1 est accroché avec une de ses extrémités qui est fixée sur un poussoir 12 et une de ses extrémités qui est fixée sur le châssis 6. Les deux extrémités du fil 1 1 sont situées par rapport à l’élément 7a amortissant en avant de celui-ci et le fil passe en arrière de l’élément 7a amortissant. Comme pour le mode de réalisation illustré à la figure 2, le poussoir 12 est fixé à une poutre 13 de pare-chocs arrière. Ainsi, en cas de choc arrière F, le poussoir 12 se déplace (flèche D) dans la direction longitudinale X par le déplacement de la poutre 13. L’extrémité du fil fixée au châssis ne bouge pas relativement à la suspente 7, mais celle fixée au poussoir 12 suit le mouvement de ce dernier. Au cours du déroulement du déplacement longitudinal du poussoir 12, le fil 1 1 vient donc se tendre au contact de l’élément 7a amortissant puis sectionner progressivement l’élastomère de l’élément 7a amortissant. Figure 5 shows another embodiment. In this embodiment, the wire 1 1 is hooked with one of its ends which is fixed on a pusher 12 and one of its ends which is fixed on the frame 6. The two ends of the wire 1 1 are located relative to the element 7a damping in front of it and the wire passes behind the damping element 7a. As for the embodiment illustrated in Figure 2, the pusher 12 is attached to a beam 13 of the rear bumper. Thus, in the event of a rear impact F, the pusher 12 moves (arrow D) in the longitudinal direction X by the displacement of the beam 13. The end of the wire fixed to the frame does not move relative to the hanger 7, but that attached to the pusher 12 follows the movement of the latter. During the course of the longitudinal displacement of the pusher 12, the wire 1 1 is therefore tensioned in contact with the damping element 7a and then gradually cut the elastomer of the damping element 7a.
Dans le même esprit, on peut également avoir un autre mode de réalisation (non représenté) dans lequel le fil 1 1 est accroché avec une de ses extrémités qui est fixée sur le poussoir 12 et une de ses extrémités qui est fixée sur le silencieux 5, les deux extrémités du fil 1 1 étant situées par rapport à l’élément 7a amortissant en avant de celui-ci et le fil passe en arrière de l’élément 7a amortissant. In the same spirit, one can also have another embodiment (not shown) in which the wire 1 1 is hooked with one of its ends which is fixed on the pusher 12 and one of its ends which is fixed on the silencer 5 , the two ends of the wire 1 1 being located relative to the element 7a damping in front thereof and the wire passes behind the damping element 7a.
L’invention ne se limite pas au mode de réalisation décrit. Dans un autre mode de réalisation, l’équipement sensible peut par exemple être un réservoir de fluide tel que du carburant. L’équipement sensible peut ne pas être présent. The invention is not limited to the embodiment described. In another embodiment, the sensitive equipment may for example be a fluid reservoir such as fuel. Sensitive equipment may not be present.

Claims

REVENDICATIONS
1. Véhicule (1 ) automobile comportant : 1. Vehicle (1) having:
-un châssis (6),  a chassis (6),
-un silencieux (5) arrière d'échappement fixé au châssis (6) par l'intermédiaire d'une suspente (7) d'échappement comportant un élément (7a) amortissant,  an exhaust rear silencer (5) fixed to the chassis (6) via an exhaust line (7) comprising a damping element (7a),
caractérisé en ce que ce véhicule comprend de plus un fil (1 1 ) comprenant deux extrémités, le fil (1 1 ) et ses deux extrémités étant disposés par rapport à l’élément (7a) amortissant de sorte que lors d’un déplacement longitudinal d’au moins une des extrémités du fil relativement à l’élément (7a) amortissant de la suspente (7), un tel déplacement longitudinal se produisant lors d’un choc sur l’arrière du véhicule (1 ), le fil vient sectionner l’élément (7a) amortissant.  characterized in that said vehicle further comprises a wire (1 1) comprising two ends, the wire (1 1) and its two ends being arranged relative to the element (7a) damping so that during a longitudinal displacement at least one of the ends of the wire relative to the damping element (7a) of the hanger (7), such longitudinal displacement occurring during an impact on the rear of the vehicle (1), the wire is sectioned the damping element (7a).
2. Véhicule automobile selon la revendication 1 , caractérisé en ce qu'une des extrémités du fil (1 1 ) est fixée à un poussoir (12) qui est entraîné par déplacement longitudinal se produisant lors d’un choc sur l’arrière du véhicule (1 ). 2. Motor vehicle according to claim 1, characterized in that one end of the wire (1 1) is attached to a pusher (12) which is driven by longitudinal displacement occurring during an impact on the rear of the vehicle (1).
3. Véhicule automobile selon la revendication 2, caractérisé en ce que le poussoir (12) est fixé à une poutre (13) de pare-chocs arrière. 3. Motor vehicle according to claim 2, characterized in that the pusher (12) is fixed to a beam (13) of the rear bumper.
4. Véhicule automobile selon la revendication 2 ou la revendication 3, caractérisé en ce que l’autre des extrémités du fil (1 1 ) est fixée au silencieux (5). 4. Motor vehicle according to claim 2 or claim 3, characterized in that the other end of the wire (1 1) is attached to the silencer (5).
5. Véhicule automobile la revendication 2 ou la revendication 3, caractérisé en ce que l’autre des extrémités du fil est fixée au châssis (6). 5. Motor vehicle according to claim 2 or claim 3, characterized in that the other ends of the wire is fixed to the frame (6).
6. Véhicule automobile selon la revendication 1 , caractérisé en ce qu’une des extrémités du fil (1 1 ) est fixée au silencieux (5). 6. Motor vehicle according to claim 1, characterized in that one end of the wire (1 1) is attached to the muffler (5).
7. Véhicule automobile selon la revendication 6, caractérisé en ce que l’autre extrémité du fil (1 1 ) est fixée au silencieux (5) ou au châssis (6). 7. Motor vehicle according to claim 6, characterized in that the other end of the wire (1 1) is attached to the muffler (5) or the frame (6).
8. Véhicule automobile selon l’une quelconque des revendications précédentes, caractérisé en ce qu’il comporte un équipement sensible (9) disposé en avant du silencieux (5). 8. Motor vehicle according to any one of the preceding claims, characterized in that it comprises a sensitive equipment (9) disposed in front of the silencer (5).
9. Véhicule automobile selon la revendication 8, caractérisé en ce que l’équipement sensible (9) est un module de batterie ou un réservoir de fluide ou un réservoir de carburant. 9. Motor vehicle according to claim 8, characterized in that the sensitive equipment (9) is a battery module or a fluid reservoir or a fuel tank.
PCT/FR2018/053187 2018-01-30 2018-12-11 A motor vehicle with exhaust hanger cutting wire WO2019150007A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1850720 2018-01-30
FR1850720A FR3077244B1 (en) 2018-01-30 2018-01-30 MOTOR VEHICLE WITH EXHAUST SUSPENSION CUTTING WIRE

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WO2019150007A1 true WO2019150007A1 (en) 2019-08-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04140414A (en) * 1990-09-28 1992-05-14 Mazda Motor Corp Silencer supporting structure
US20120326469A1 (en) * 2011-06-27 2012-12-27 Suzuki Motor Corporation Vehicle bottom structure
DE102014209604A1 (en) * 2014-05-20 2015-11-26 Bayerische Motoren Werke Aktiengesellschaft Rear end of a motor vehicle with a muffler, in particular a rear muffler, and a to be protected in a rear impact space
US9409601B2 (en) 2012-12-14 2016-08-09 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having an axle support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04140414A (en) * 1990-09-28 1992-05-14 Mazda Motor Corp Silencer supporting structure
US20120326469A1 (en) * 2011-06-27 2012-12-27 Suzuki Motor Corporation Vehicle bottom structure
US9409601B2 (en) 2012-12-14 2016-08-09 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having an axle support
DE102014209604A1 (en) * 2014-05-20 2015-11-26 Bayerische Motoren Werke Aktiengesellschaft Rear end of a motor vehicle with a muffler, in particular a rear muffler, and a to be protected in a rear impact space

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FR3077244A1 (en) 2019-08-02

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