Stop device for motor vehicle engine support

Abstract

The invention relates to a motor vehicle (10) comprising: a structure (12) with a front stretcher (22) and forming a base (18); an engine mount (26) with a rear end (30) and arranged under the front stretcher (22); fusible fixing means (14) in the event of a frontal collision of the motor vehicle (10), the fusible fixing means (14) connecting the rear end (30) of the engine mount (26) to the base (18). The base (18) comprises at least one stop device (42) longitudinally facing the rear end (30) of the engine mount (26) in order to longitudinally block said engine mount (26) relative to the base (18) in the event of rupture of the fusible fixing means (14) during said frontal collision. Figure to be published with the abstract: Figure 3

Description

Title of the invention: Stop device for motor vehicle engine support

[0001] The invention relates to the safety of passengers in a motor vehicle in the event of a front impact. The invention deals more particularly with intrusions of the engine mount in the event of a front collision against a motor vehicle. The subject of the invention is a motor vehicle comprising an engine mount under front stretchers.

[0002] Safety standards relating to the front impact that a motor vehicle may experience require its engine mount to transmit the forces resulting from this impact to the side rail and the underbody of the vehicle via a rigid connection in order to dissipate the impact forces as much as possible in the underbody. However, a break in at least one of the screws securing the rear part of the cradle to the underbody may occur, thereby cancelling the ability of the cradle to transmit the impact forces to the underbody. Following such a break, the engine mount moves back and will butt against the bulkhead, the latter delimiting the lower front wall of the passenger compartment. The engine mount, and especially the elements of the powertrain carried by the latter, then risk pushing the bulkhead and impacting the occupants of the passenger compartment at the level of their lower limbs, potentially causing serious injuries.

[0003] The solutions developed to resolve this problem usually include strengthening the connections, in particular by the main rear attachment of the engine mount to the front underbody by, for example, increasing the size of the screws, by adding local reinforcements or additional attachments, by multiplying them while reducing their size behind the main attachment.

[0004] Document FR2928127A1 describes a device for reinforcing the connection between the rear part of the engine mount and the underbody comprising a stretcher of a vehicle, to absorb the energy of the impact in the event of a front impact. The engine mount comprises a male part on its part intended to be covered by the stretcher, this male part being received in a female part arranged on the stretcher when the latter is in the mounted position on the cradle. Following an impact, the engine mount will be embedded in the underbody to dissipate the energy of the impact.

[0005] Conversely, document EP3142916A1 describes a front shock absorption device and attachment of the stretcher and the engine support using fusible fasteners. Following a significant impact, the rearward translation of the engine support will precisely allow part of the energy of the impact to be absorbed.

[0006] However, these solutions still lead to the possibility of contact of the support engine, therefore the elements it carries, with the underbody and in particular with the bulkhead. In particular, the behavior of the stretcher is not stabilized and the latter can poorly absorb the forces by transmitting them to the bulkhead. The risk of significant deformation of the latter and of the front structure of the passenger compartment, as well as injuries to the passengers, therefore remains present.

[0007] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to increase the safety of passengers in a motor vehicle. The invention also aims to optimize the safety, mass and compactness of a motor vehicle.

[0008] According to a first aspect, the invention proposes a motor vehicle comprising: a structure with a front stretcher and forming a base; an engine mount with a rear end and arranged under the front stretcher; fusible fixing means in the event of a frontal collision of the motor vehicle, the fusible fixing means connecting the rear end of the engine mount to the base; remarkable in that the base comprises at least one stop device longitudinally facing the rear end of the engine mount in order to longitudinally block said engine mount relative to the base in the event of rupture of the fusible fixing means during said frontal collision.

[0009] During a frontal impact resulting in the breakage of at least one attachment of the engine support, said cradle moves back against the structure of the motor vehicle and in particular against the stop device. This makes it possible to control the kinematics of the support. As a corollary, this aspect limits the intrusion of the engine into the passenger compartment, and prevents the engine support from disturbing the stretchers in their deformation process accompanied by absorption of collision energy. The passenger compartment of the vehicle being preserved, the invention improves passenger safety.

[0010] Preferably, the stop device comprises a vertical wall extending transversely opposite the rear end of the engine support.

[0011] Preferably, the vertical wall is longitudinally spaced from the rear end of the engine support; preferably the engine support comprises a rear branch extending longitudinally and forming the rear end.

[0012] Preferably, the rear end has a vertical thickness, the stop device comprises a vertical height greater than or equal to the vertical thickness; preferably, the stop device extends vertically over the entire vertical thickness of the rear end.

[0013] Preferably, the stop device forms a hook open longitudinally towards the rear end; preferably, the stop device projects under the structure of the motor vehicle.

[0014] Preferably, the motor vehicle comprises electric batteries in the underbody, a protective tray for the electric batteries, the stop device being longitudinally between the engine support and the electric batteries; preferably, the stop device extending under the protective tray.

[0015] Preferably, the base has a front wall projecting vertically; the stop device being longitudinally against the front wall.

[0016] Preferably, the stop device comprises an upper wing fixed to the base, said upper wing being above the rear end of the engine support; and / or the stop device comprises a lower wing vertically spaced from the structure, said lower wing being under the rear end of the engine support.

[0017] Preferably, the stop device comprises at least one row of stiffeners; preferably, each row of stiffeners is vertically spaced from the rear end of the engine support.

[0018] Preferably, the stop device is fixed to the base by welding or screwing; preferably, the stop device comprises steel or cast iron.

[0019] Preferably, the stop device extends over at most 10% of the width of the structure.

[0020] Preferably, the stop device extends over at most 5% of the width of the structure.

[0021] Preferably, the front stretcher is fixed to the engine support.

[0022] Preferably, the upper wing is horizontal.

[0023] Preferably, the lower wing is horizontal.

[0024] Preferably, the upper wing is vertically opposite the lower wing.

[0025] Each characteristic introduced by the expression “preferably” given in relation to one of the aspects of the invention applies to all the other aspects of the invention.

[0026] The invention will be well understood and other aspects and advantages will appear clearly on reading the description which follows, given with reference to the figures appended and listed below.

[0027] [Fig.l] is a side view of a motor vehicle according to the invention.

[0028] [Fig.2] shows a bottom view of an engine support and underbody assembly of a motor vehicle according to the invention.

[0029] [Fig. 3] shows a stop device for the underbody of a motor vehicle according to the invention.

[0030] [Fig.4] shows a longitudinal diagram of a motor vehicle stop device according to the invention.

[0031] In the following description, the term “understand” is synonymous with “include” and is not limiting in that it allows the presence of other elements in the motor vehicle to which it relates. It is understood that the term "include" includes the terms "consist of". The terms "external" and "internal" will designate respectively that which is oriented towards the outside of the vehicle and towards the inside of the vehicle.

[0032] In the present description, the term "longitudinal", the term "longitudinally", the term "transverse", and the term "transversely" are used according to the reference frame of the vehicle, in the mounting configuration. The term "longitudinal" corresponds to the main direction of movement of the vehicle. The term "transverse" corresponds to a direction perpendicular to the main direction of movement of the vehicle. The term "front" refers to the main direction of movement of the vehicle. The term "rear" designates the opposite of the front of the vehicle.

[0033] The X axis represents the longitudinal direction, the Y axis represents the transverse direction, and the Z axis represents the vertical direction of the motor vehicle. These three axes define a direct trihedron whose orientation is preserved throughout the figures.

[0034] In the present description, the ranges of values ​​include the limits which delimit them.

[0035] In the present description, the equalities between the values ​​are not to be understood in the strict sense insofar as each equality authorizes a variation of at most 10%, preferably at most 5%, more preferably at most 2%, between these values.

[0036] In the present description, the term "vertical" and the term "horizontal" are not to be understood in the strict sense of the term. Indeed, they allow an inclination of at most 20°, preferably at most 10°, more preferably at most 5°, even more preferably at most 2°; compared to the strict sense of these terms.

[0037] In this description, the technical characteristics are defined in the mounting configuration of the device, unless explicitly mentioned otherwise.

[0038] Throughout the description, the different figures use the same reference signs to designate identical or similar entities.

[0039] [Fig.l] represents a motor vehicle 10 according to the invention. The motor vehicle 10 comprises a structure 12. The structure 12 forms an outer body, or even a main frame of the motor vehicle. The structure 12 delimits different compartments of the motor vehicle 10, including a passenger compartment, an engine compartment 16, a loading trunk (not shown). The structure 12 can be formed from an assembly of stamped sheets welded to each other.

[0040] The structure 12 connects different parts of the motor vehicle 10 including the openings. The structure 12 forms a mounting support for the powertrain, the suspension systems, the steering system, the braking systems (not re- presented).

[0041] The motor vehicle 10 comprises an underbody 18. The underbody 18 forms the lower portion of the motor vehicle 10. It connects the front and rear axles, and extends beyond. It is formed by a portion of the structure 12. The underbody 18 comprises a floor beneath the passenger compartment. The underbody 18 may comprise a deflector. The deflector forms an essentially smooth panel; it guides the airflow beneath the motor vehicle 10 as it travels.

[0042] The structure 12 comprises two front stretchers 22, only one of which is shown in the figures for reasons of clarity. The front stretchers 22 are two profiles of the front structure of the vehicle extending longitudinally along the engine compartment 16, parallel to the longitudinal axis of the vehicle 10. The front stretchers 22 are front side members. They are arranged in front of the central side members which extend between the front and rear axles. The structure 12 comprises a front bulkhead 40. The front bulkhead 40 forms a partition between the passenger compartment and the engine compartment 16; also called the front compartment. The front stretchers 22 extend to the front bulkhead 40. The front stretchers 22 partially form the front bulkhead 40, which contributes to the distribution of forces in the event of a frontal collision.

[0043] The motor vehicle 10 comprises at least one engine 24. This engine 24 may be an electric motor. The engine 24 is configured to drive the motor vehicle 10 so that it travels. The engine 24 is placed in the engine compartment 16, and rests at least partly on an engine support 26. According to an alternative of the invention, the engine is a heat engine.

[0044] The engine mount 26 is connected to the front wheels via the suspension system. The front stretchers 22 rest on the engine mount 26. They are fixed there using support means 28 also called horns. These support means 28 form support pillars for the front stretchers 22 on the engine mount 26. They are fusible. In the event of a frontal collision at a predefined threshold speed, they are configured to break in order to release the front stretchers 22.

[0045] The motor vehicle 10 further comprises fusible attachment means 14. The fusible attachment means 14 connect the engine mount 26 to the underbody 18. They are configured to break during a frontal collision at the predefined threshold speed. The frontal collision is an impact against the front face. It is against another vehicle or a fixed obstacle. The predefined threshold speed is for example between 50 km / h and 65 km / h.

[0046] The motor vehicle 10 also comprises electric batteries 20. The electric batteries 20 are configured to power the engine 24. The electric batteries 20 are arranged in the base 18. They extend between the axles. They are vertically at the level of the engine support 26.

[0047] The motor vehicle may, for example, be a private motor vehicle or a utility motor vehicle.

[0048] [Fig. 2] shows a bottom view of a portion of structure 12 forming a base 18 of a motor vehicle. The motor vehicle may correspond to that shown in relation to [Fig. 1]. The engine mount 26 and one of the front stretchers 22 are shown.

[0049] The engine mount 26 generally forms a frame. A suspension arm 70 is attached to the engine mount 26. It comprises a rear end 30, for example on each side. The rear ends 30 are formed by rear branches 32. The rear branches 32 extend longitudinally, and substantially transversely. They extend the frame rearwardly. The rear branches 32 extend horizontally. They are spaced from the structure 12, vertically and longitudinally. The rear branches 32 may be longitudinal branches.

[0050] The engine mount 26 is generally symmetrical. The engine mount 26 is connected to the structure 12 by means of mounting means 34. The mounting means 34 comprise front orifices 36 and rear orifices 38. The front orifices 36 are fixed via the support means (not shown), and the rear orifices are fixed via the fusible fixing means (not shown). The fusible fixing means may comprise screws, bolts, pins or pins; they preferably allow reversible fixing of the engine mount 26 to the structure 12 of the motor vehicle. The fusible fixing means may comprise a fracture initiator such as a notch. The rear orifices 38 are formed at the rear ends 30, at the rear branches 32.

[0051] The base 18 has a protective tray 44. The protective tray 44 covers the electric batteries. It acts as a shield against projections towards the electric batteries. The protective tray 44 forms in particular a deflector. It is vertically facing the ground. The protective tray 44 comprises a front end 68. It is longitudinally facing the engine support 26, in particular its rear end 30. The engine support 26 is longitudinally at a distance from the front end 68 of the protective tray 44. Said protective tray 44 may comprise metal, a plastic or composite material.

[0052] The motor vehicle further comprises a stop device opposite the rear end 30 in order to control its recoil in the event of a frontal collision.

[0053] [Fig. 3] shows a stop device 42 arranged in the base 18 of a motor vehicle according to the invention. The motor vehicle may correspond to that presented in relation to Figures 1 and 2.

[0054] The engine mount 26 comprises a rear end 30. The engine mount 26 is arranged under the front stretcher. The front stretcher is vertically spaced from the engine mount 26. The fusible attachment means 14 are severable in the event of a frontal collision. They attach the engine mount 26 to the structure 12. In particular, the fusible attachment means 14 secure the rear end 30 to the underbody 18.

[0055] According to the invention, the motor vehicle comprises at least one stop device 42; preferably, the vehicle comprises two stop devices 42, each associated with one of the rear ends 30 of the engine support 26.

[0056] Each stop device 42 is longitudinally opposite the associated rear end 30. Thus, during a possible frontal collision, the recoil of the engine mount 26 is controlled despite the rupture of the fusible fixing means 14. On the one hand, this limits its recoil towards the electric battery when the motor vehicle is provided with them in the underbody 18. Furthermore, this aspect makes it possible to control the kinematics of the engine mount 26 during the collision, and prevents it from disturbing the front stretchers. Indeed, in certain frontal collision scenarios, the engine mount 26 rises and disturbs the front stretchers. Therefore, the latter arch upwards instead of compressing longitudinally while absorbing the energy of the impact. When the energy absorption potential of the front stretchers decreases, the structure around the passenger compartment is more subject to deformations.Passengers in the passenger compartment are subject to greater deceleration and therefore exposed to an increased risk of injury.

[0057] The stop device 42 comprises a vertical wall 46 extending transversely. The vertical wall 46 is generally perpendicular to the longitudinal direction. The vertical wall 46 is opposite the rear end 30 of the engine support 26. The vertical wall 46 forms an obstacle to the recoil of the engine support 26. The vertical wall 46 is longitudinally at a distance from the rear end 30. Thus, from the engine support 26; preferably the engine support comprises a rear branch 32 extending longitudinally and forming the rear end.

[0058] The stop device 42 forms a hook 48. The hook 48 is open horizontally. The hook 48 is open longitudinally towards the rear end 30. The stop device 42, in this case the hook 48, projects vertically under the structure 12 of the motor vehicle. It is generally vertically level with the engine support 26.

[0059] The motor vehicle comprises a protective container 44 for the electric batteries. The protective container 44 generally forms an inverted cover. It closes the housing provided for the electric batteries. The stop device 42 is longitudinally between the engine support 26 and the electric batteries. More precisely, the stop device 42 is longitudinally between the protective container 44 and the rear end 30. Preferably, the stop device extends vertically under the protective container 44. The protective container 44 is optionally lined with a partition metal connected to structure 12.

[0060] The base 18 has a front wall 50. The front wall 50 extends vertically and transversely. It can extend transversely over at least half the width of the base 18. The front wall 50 can extend over the entire width of the protective tray 44. It is generally perpendicular to the longitudinal direction. The protective tray 44 projects vertically. It forms a step under the base 18. The stop device 42 rests longitudinally against the front wall 50.

[0061] This configuration provides synergy. Indeed, the stop device 42 benefits from support against the protective tank 44. In return, the latter is protected by the stop device 42 which forms a localized shield in anticipation of a scenario of recoil of the engine support 26 against the protective tank 44. Therefore, in the event of breakage of the fusible fixing means 14 and displacement of the engine support 26, the risk of the latter reaching the electric batteries decreases. This tends to reduce the extent of damage to the batteries, of possible repairs and mitigates the risk of fire in the batteries.

[0062] The stop device 42 comprises an upper wing 52 and a lower wing 54. The upper wing 52 and the lower wing 54 are connected by the vertical wall 46. The upper wing 52 is horizontal. It is fixed to the structure 12. The lower wing 54 is horizontal. The upper wing 52 is parallel to the lower wing 54. Both the upper 52 and lower 54 wings extend longitudinally towards the rear end 30.

[0063] The upper wing 52 is vertically opposite the lower wing 54. They are vertically spaced apart from each other. They define between them a clearance 56 whose height is greater than the vertical thickness of the rear end 30. The clearance 56 is delimited at the rear by the vertical wall 46. The clearance 56 is a recess.

[0064] The stop device 42 comprises at least one stiffener 58, preferably at least two stiffeners 58. The stiffeners 58 comprise at least one upper stiffener and at least one lower stiffener. They are respectively above and below the rear end 30. The stiffeners 58 limit the deformations of the stop device 42 when it intercepts the engine support 26.

[0065] The stop device 42 comprises steel or cast iron. It may comprise folded steel or cast iron sheets, with a thickness of between 4 and 8 mm. Said stop device 42 may be produced by welding, forging or stamping.

[0066] The stop device 42 can be fixed to the base 18 by welding or by screwing. According to one embodiment of the invention, the fixing of the stop device 42 to the base 18 can integrate the edge of the protective tray 44, or of a deflector, or of another element added under the motor vehicle.

[0067] The stop device 42 comprises a transverse width 66. The transverse width 66 is an average width. The transverse width 66 represents from 1% to 10% of the width of the structure 12. Preferably, the transverse width 66 represents from 2% to 5% of the width of the structure 12. These proportions optimize the maintenance of the engine support 26 and the compactness.

[0068] [Fig. 4] shows a section of a stop device 42 arranged in the base 18 of a motor vehicle according to the invention. The motor vehicle may correspond to that presented in relation to Figures 1 and 3. The engine support 26 is shown in solid lines in the mounting configuration, and in dotted lines following a frontal collision having caused a rupture of the fusible fixing means 14.

[0069] The protective tray 44 and the electric batteries 20 are shown. The electric batteries 20 are fixed to a sheet of the floor 60. The floor 60 delimits the passenger compartment.

[0070] The vertical wall 46 is longitudinally at a distance from the rear end 30 of the engine support 26. This aspect allows the engine support 26 to move back, and allows a distance, a clearance with respect to the front stretchers (not shown) so as not to constrain their deformations.

[0071] The stop device 42 comprises an upper wing 52 fixed to the underbody 18. The upper wing 52 extends above the rear end 30 of the engine support 26. The stop device 42 comprises a lower wing 54 vertically spaced from the structure 12. The lower wing 54 is under the rear end 30 of the engine support 26. The vertical wall 46 extends over the height of the rear end 30. Thus, in the event of the latter moving backward, it reaches the vertical wall 46, and remains vertically against it by the upper wing 52 and the lower wing 54. This contributes to controlling the kinematics and deformation of the vehicle in the event of a frontal collision. Safety is improved.

[0072] The stop device 42 preferably comprises at least one row of stiffeners 58. Each row of stiffeners extends vertically at a distance from the rear end 30 of the engine support 26. The stiffeners 58 connect the vertical wall 46 to the upper wing 52 and to the lower wing 54. They form squares. They limit the opening of the stop device 42 forced by the buffer blow of the engine support 26 in the event of a frontal collision.

[0073] The rear end 30 has a vertical thickness 62. The vertical thickness 62 is a maximum thickness. The stop device 42 comprises a vertical height 64 greater than or equal to the vertical thickness 62. The vertical height 64 is measured inside the stop device 42, for example between the upper wing 52 and the lower wing 54. It can be measured against the vertical wall 46. It can be a minimum height. According to one option, the vertical height 64 is a height of the de- pledge 56.

[0074] The vertical height 64 represents from 110% to 200%, preferably from 120% to 150% of the vertical thickness 62. These proportions optimize the stability of holding the engine support 26 and the compactness. Preferably, the stop device 42 extends vertically over the entire vertical thickness 62 of the rear end 30.

[0075] The stop device 42 comprises a hook shape 48 whose hollow faces longitudinally towards the rear end 30. According to an alternative of the invention, the stop device comprises a half-tube whose hollow is in front and the arcuate wall is in the rear.

[0076] In the event of a frontal impact at high speed, the engine mount 26 is pushed rearward. Depending on the configuration of the impact, i.e. whether the latter impacts the entire front face of the motor vehicle or only a part of it, the elements involved are likely to react asymmetrically.

[0077] Following the impact, the fusible fixing means 14 break or tear off. The longitudinal branches 32 come into contact with the base 18 and slide under the latter, under the floor 60. The engine support 26 pivots vertically downwards and begins a translational movement towards the apron (not visible in [Fig.4]). The engine (not visible) connected to the engine support 26 also moves towards the apron.

[0078] The engine support 26 is connected to the front stretchers by the fusible fixing means 14. In the absence of a stop device 42, under the effect of the force carried by said engine support 26, the front stretchers work in such a way as to absorb a first part of the energy of the impact by bending upwards in an uncontrolled manner; or at least according to a kinematics which does not allow the deformations to be concentrated in their zones dedicated to energy dissipation. The front stretchers transmit a second part of the energy of the impact to the following elements in the structure, namely the bulkhead. The risk of said bulkhead being pushed in is therefore high, as is the risk of bodily injury to the occupants of the passenger compartment following the intrusion of the engine through the bulkhead.Likewise, the longitudinal branches 32 strike the elements present under the base 18 at the level of the front wall 50, and potentially risk pushing in the protective tank 44 and then causing significant damage to the electric batteries 20 covered by said protective tank 44.

[0079] In the presence of stop devices 42, the rear end 30 of a rear branch 32 is fitted into a stop device 42. The rear branch 32 is retained by said stop device 42. The vertical wall 46 stops the rearward movement of the rear branch 32, which is also blocked vertically by the upper wing 52 and the lower wing 54. The engine support 26 is blocked longitudinally by the stop device 42.

[0080] The protective tray 44 and / or the other elements present under the base 18 are protected from being pushed in or pulled out by the engine support 26.

[0081] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0082] Figures 2 and 3 are isometric views. They each respect a specific scale, real angles and real proportions.

Claims

Claims

1. Motor vehicle (10) comprising: a structure (12) with a front stretcher (22) and forming a base (18); an engine mount (26) with a rear end (30) and arranged under the front stretcher (22); fusible fixing means (14) in the event of a frontal collision of the motor vehicle (10), the fusible fixing means (14) connecting the rear end (30) of the engine mount (26) to the base (18); characterized in that the base (18) comprises at least one stop device (42) longitudinally facing the rear end (30) of the engine mount (26) in order to longitudinally block said engine mount (26) relative to the base (18) in the event of rupture of the fusible fixing means (14) during said frontal collision.

2. Motor vehicle (10) according to claim 1, characterized in that the stop device (42) comprises a vertical wall (46) extending transversely opposite the rear end (30) of the engine support (26).

3. Motor vehicle (10) according to claim 2, characterized in that the vertical wall (46) is longitudinally spaced from the rear end (30) of the engine support (26); preferably the engine support (26) comprises a rear branch (32) extending longitudinally and forming the rear end (30).

4. Motor vehicle (10) according to one of claims 1 to 3, characterized in that the rear end (30) has a vertical thickness (62), the stop device (42) comprises a vertical height (64) greater than or equal to the vertical thickness (62); preferably, the stop device (42) extends vertically over the entire vertical thickness (62) of the rear end (30).

5. Motor vehicle (10) according to one of claims 1 to 4, characterized in that the stop device (42) forms a hook (48) open longitudinally towards the rear end (30); preferably, the stop device (42) projects under the structure (12) of the motor vehicle (10).

6. Motor vehicle (10) according to one of claims 1 to 5, characterized in that the motor vehicle (10) comprises electric batteries (20) in the underbody (18), a protective tray (44) for the electric batteries (20), the stop device (42) being longitudinally finally between the engine support (26) and the electric batteries (20); preferably, the stop device (42) extending under the protective tank (44).

7. Motor vehicle (10) according to one of claims 1 to 6, characterized in that the base (18) has a front wall (50) projecting vertically; the stop device (42) being longitudinally against the front wall (50).

8. Motor vehicle (10) according to one of claims 1 to 7, characterized in that the stop device (42) comprises an upper wing (52) fixed to the underbody (18), said upper wing (52) being above the rear end (30) of the engine support (26); and / or the stop device (42) comprises a lower wing (54) vertically spaced from the structure (12), said lower wing (54) being under the rear end (30) of the engine support (26).

9. Motor vehicle (10) according to one of claims 1 to 8, characterized in that the stop device (42) comprises at least one row of stiffeners (58); preferably, each row of stiffeners (58) is vertically spaced from the rear end (30) of the engine support (26).

10. Motor vehicle (10) according to one of claims 1 to 9, characterized in that the stop device (42) is fixed to the underbody (18) by welding or by screwing; preferably, the stop device (42) comprises steel or cast iron.

Images