Front bumper for a motor vehicle

Abstract

A front bumper (3) comprising a side end (5) provided with a through duct (6) extending longitudinally along a curved axis (K) having a closed cross section with respect to said curved axis (K) and defined between an inlet opening (7) facing forwards of the front bumper (3) and an outlet opening (8) facing outwards of the front bumper (3).

Description

Cross-references to related applications

[0001] This patent application claims priority to Italian patent application No. 102025000006399, filed on March 27, 2025, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This invention relates generally to the field of motor vehicles, and more specifically to front bumpers. Background Technology

[0003] As is well known, the front bumper of a motor vehicle defines the front end of the vehicle and is therefore the first component exposed to the generated aerodynamic flow when the vehicle is moving forward.

[0004] Therefore, the configuration of the front bumper plays a decisive role in determining the aerodynamic performance of the vehicle, as well as the direction of the aerodynamic flow to the sides and rear of the vehicle.

[0005] Therefore, there is a general need to improve the front bumper configuration, especially by influencing the aerodynamic flow around the vehicle to improve its aerodynamic performance, more specifically by maximizing the "outer wash" effect, which can also help generate downforce.

[0006] The purpose of this invention is to meet the above-mentioned requirements, preferably in a simple and reliable manner. Summary of the Invention

[0007] This objective is achieved by a front bumper for a motor vehicle, the front bumper including a side end having a through conduit extending longitudinally along a curve axis K and having a closed cross-section relative to the curve axis K, and the through conduit being defined between an inlet opening toward the front of the front bumper and an outlet opening toward the outside of the front bumper.

[0008] In one embodiment, the inlet opening also faces the center of the front bumper, and / or the outlet opening also faces the rear of the front bumper.

[0009] In one embodiment, the curved axis K extends from the inlet opening toward the outlet opening and has a first inflection point F between the foremost first segment K1 and the rearmost second segment K2. The concave shapes of the first segment and the second segments K1 and K2 are respectively directed toward the inner and outer sides of the front bumper according to the pitch axis Y of the motor vehicle.

[0010] In one embodiment, the through-duct is laterally defined between the innermost side and the outermost side, the innermost side having at least a first recess whose concave shape is oriented towards the outside of the front bumper along the pitch axis Y of the vehicle.

[0011] In one embodiment, the concave shape of the first recess also faces the front of the front bumper.

[0012] In one embodiment, a shaped wall is also included, which defines the outermost side surface on one side and an outer side surface directly exposed to the outer side of the front bumper on the other side with the pitch axis Y as the opposite side.

[0013] In one embodiment, the first recess is opposite to the second recess on the outermost side, and the concave shape of the second recess faces outward from the front bumper.

[0014] In one embodiment, the outer side end face is recessed towards the inside of the front bumper.

[0015] In one embodiment, the through-duct extends from the inlet opening toward the outlet opening and has at least one segment with a converging or convergent-expanding configuration, specifically converging along the foremost first segment K1 of the curve axis K and expanding along the rearmost second segment K2 of the curve axis K. More specifically, the curve axis has a first inflection point F between the first segment and the second segments K1 and K2, and the concave shapes of the first segment and the second segments K1 and K2 are respectively oriented toward the inner and outer sides of the front bumper according to the pitch axis Y of the motor vehicle.

[0016] The present invention further provides a front portion of a motor vehicle, including a wheel arch defining a lower wheel well for receiving a wheel of the motor vehicle; and a front bumper according to any of the preceding embodiments, the front bumper further including an edge surface flush with the wheel arch and defining the rearmost edge of the outlet opening, wherein the front bumper further includes a rounded corner surface defining a rounded corner between a first recess and the edge surface, wherein a second inflection point is formed between the first recess and the edge surface.

[0017] The present invention further provides a motor vehicle, including a front bumper according to any of the foregoing embodiments, or a front portion of a motor vehicle according to the foregoing embodiments. Attached Figure Description

[0018] The embodiments of the present invention will be described below by way of non-limiting examples and with reference to the accompanying drawings, in order to provide a better understanding of the invention. In the drawings:

[0019] -Figure 1 A perspective view of a motor vehicle including a front bumper according to the present invention.

[0020] - Figure 2 This is a frontal 3D view of the vehicle's front end from the side of the front bumper.

[0021] - Figure 3 for Figure 2 The rear-view perspective view of the front and rear sides is shown.

[0022] - Figure 4 for Figure 2 , Figure 3 The cross-section is taken from the front part of the vehicle along a cutting plane orthogonal to the vehicle's yaw axis.

[0023] - Figure 5 for Figure 2 , Figure 3 The cross-section is taken from the front part of the vehicle along a cutting plane orthogonal to the vehicle's roll axis. Detailed Implementation

[0024] exist Figure 1 In the attached figure, reference numeral 1 is used to denote motor vehicles.

[0025] The motor vehicle 1 includes a front portion 2 defined along its normal direction of travel.

[0026] The motor vehicle 1 has a longitudinal roll axis X, that is, the roll axis X is parallel to or coincides with the direction of travel.

[0027] The motor vehicle 1 also has a pitch axis Y, which is orthogonal to the roll axis X and is horizontal, and thus extends laterally, i.e. orthogonal to the roll axis X, from one side or side wall 4 of the motor vehicle 1 (e.g., in a non-limiting manner, side wall 4 means the side of the motor vehicle 1 or the side panel of the motor vehicle 1, each of which may be located on the outside) to the other side of the motor vehicle 1.

[0028] The motor vehicle 1 also has a yaw axis Z, which is orthogonal to the axes X and Y, and therefore has at least one vertical component, i.e., its orientation is consistent with the direction of gravitational acceleration.

[0029] The front part 2 includes a front bumper 3, which, more specifically, defines the front end of the vehicle 1 along the roll axis X. In other words, the front part 2 terminates at the front end of the front bumper 3, which is the first component exposed to or subjected to the aerodynamic flow generated along the roll axis X during the forward movement of the vehicle 1.

[0030] The front bumper 3 includes two side ends 5 (in the direction of the pitch axis Y), which define the outermost front corner of the vehicle 1 in the lateral direction, thus forming a corner together with the side wall 4.

[0031] The side ends 5 are preferably symmetrical to each other with respect to the vertical center plane (plane of axes X and Z) of the motor vehicle 1, so only one of them will be mentioned in this specification. It should be understood that the relevant features also apply to the other side end 5.

[0032] Since the front part 2 and the front bumper 3 are both components of the motor vehicle 1, each of the axes X, Y, and Z can also serve as a reference for the front part 2 and the front bumper 3, even when these components are disassembled, because they are designed in any case to be mounted on the motor vehicle 1 in a suitable orientation relative to the axes X, Y, and Z.

[0033] Therefore, the front part 2 and the front bumper 3 can even have their own roll axis, pitch axis and yaw axis, which are always represented by the symbols X, Y and Z. When the front part 2 and the front bumper 3 are respectively installed on the motor vehicle 1, their axes will be parallel to the axes X, Y and Z of the motor vehicle 1.

[0034] Generally speaking, axes X, Y, and Z can be applied to any point of the relevant component, such as, but not necessarily, its center of gravity, and the axes constitute the reference axes of the relevant component.

[0035] The side end 5 includes, has, or is provided with a through pipe 6, which extends longitudinally or axially along the curve axis K between the inlet opening 7 and the outlet opening 8.

[0036] The inlet opening 7 is located in front of the outlet opening 8.

[0037] Axis K initially begins at the inlet opening 7 and extends rearward toward the front bumper 3 with at least one longitudinal component (along axis X), forming a curve (in the direction of axis Y) toward the outside of the front bumper 3 or the vehicle 1, until terminating at the outlet opening 8, still specifically pointing toward the outside of the front bumper 3. Specifically, at the inlet opening 7, axis K points toward the front of the vehicle 1 or the front bumper 3.

[0038] For clarity, in this document and in the following text, expressions such as front, back, in front, behind, rear, in front, etc., refer to the roll axis X, which points in the normal driving direction of the motor vehicle 1.

[0039] Similarly, terms such as inner side and outer side are relative to the vertical center plane of the motor vehicle 1 or the front bumper 3, and for the latter, they are relative to its orientation when mounted on the motor vehicle 1.

[0040] The cross section of pipe 6, that is, the section taken in a plane orthogonal to axis K for each point of axis K, is a closed cross section, that is, the cross section area is defined by the corresponding contour line with a closed profile; the cross section shape is, for example, generally quadrilateral or irregular shape, preferably wavy, that is, with curved or arched segments or sides.

[0041] The cross-sections of pipe 6 at both ends of shaft K are defined by inlet opening 7 and outlet opening 8, respectively.

[0042] The entrance opening 7 faces or points towards the front bumper 3 or the front of the vehicle 1. More precisely, axis K points towards the front of the front bumper 3 or the front of the vehicle 1 at the entrance opening 7. In other words, the entrance opening 7 is located in the area of ​​the front bumper 3 that extends generally laterally to or intersects the plane containing axis X or axes X and Z.

[0043] More specifically, the inlet opening 7 also faces or points towards the center or inner side of the front bumper 3 or the vehicle 1 (in the direction of the pitch axis Y), i.e., towards the vertical center plane. More precisely, the axis K at the inlet opening 7 points towards the center or inner side of the front bumper 3 or the vehicle 1. In other words, the axis K is inclined at the inlet opening 7; from the rear of the front bumper 3 or the vehicle 1 towards the front, the axis K at the inlet opening 7, relative to the axis parallel to the axis X at the point on the axis K corresponding to the inlet opening 7, is inclined towards the center or inner side of the front bumper 3 at a (suitable acute angle). Furthermore, more specifically, relative to a first axis and a second axis at the point on the axis K at the inlet opening 7, wherein the first axis and the second axis are parallel to the axis X and the axis Y respectively, the axis K has a first component along the first axis and a second component along the second axis, pointing towards the center or inner side of the front bumper 3 or the vehicle 1.

[0044] Optionally or additionally, the outlet opening 8 faces or points to the outside of the front bumper 3 or the vehicle 1 (in the direction of the pitch axis Y), that is, laterally extending beyond the external space of the side wall 4. More precisely, axis K points to the outside of the front bumper 3 or the vehicle 1 at the outlet opening 8. In other words, the outlet opening 8 is located in the area of ​​the front bumper 3 that extends generally laterally to or intersects the plane containing axis Y or axes Y and Z. Specifically, according to axis X, the outlet opening 8 is aligned with or flush with the side wall 4.

[0045] More specifically, the outlet opening 8 also faces or points towards the rear of the front bumper 3 or the vehicle 1. More precisely, the shaft K at the outlet opening 8 points towards the rear of the front bumper 3 or the vehicle 1. In other words, the shaft K is inclined at the outlet opening 8; from the front of the front bumper 3 or the vehicle 1 to the rear, the shaft K at the outlet opening 8, relative to the axis parallel to axis Y at the point on the shaft K corresponding to the outlet opening 8, is inclined towards the rear of the front bumper 3 at an angle (suitable acute angle). In other words, more specifically, relative to the first axis and the second axis (the first axis and the second axis are parallel to axis X and axis Y, respectively) at the point on the inlet opening 7, the shaft K has a first component along the first axis and a second component along the second axis, pointing towards the center or inside of the front bumper 3 or the vehicle 1. In other words, more specifically, relative to the third axis and the fourth axis (which are parallel to the X and Y axes respectively) at the point of the shaft K at the outlet opening 8, the shaft K has a third component along the third axis and a fourth component along the fourth axis, pointing outwards from the front bumper 3 or the motor vehicle 1.

[0046] Preferably, the shaft K extends from the inlet opening 7 toward the outlet opening 8, or more specifically, extends to the outlet opening 8, and has an inflection point F between the foremost segment K1 and the rearmost segment K2. In particular, the inflection point F is an extreme point of the two segments K1 and K2; furthermore, for example, the ends of segments K1 and K2 opposite to the inflection point F are located at the inlet opening 7 and the outlet opening 8, respectively.

[0047] Specifically, along the pitch axis Y direction, segment K1 has a concave shape facing inward toward the front bumper 3 or the vehicle 1, while segment K2 has a concave shape facing outward toward the front bumper 3 or the vehicle 1. More specifically, the concave shapes of segments K1 and K2 are respectively oriented along corresponding axes inclined to the Y axis, said corresponding axes extending from the center (vertical center plane) or inward of the front bumper 3 or the vehicle 1, simultaneously toward the front and outward of the front bumper 3 or the vehicle 1.

[0048] Pipe 6 is defined or delineated laterally by wall 9 of side end 5 and another wall, irregular wall, or attached wall 10; along the Y-axis, walls 9 and 10 are the innermost and outermost walls, respectively. In other words, along the Y-axis, axis K extends between walls 9 and 10.

[0049] In the cross-section of pipe 6 (i.e., the cutting plane orthogonal to axis K at a point on axis K), the wall or attached wall 10 has a generally arched shape or orientation, with a middle portion that extends substantially (i.e., mainly) from top to bottom or vice versa, i.e. vertically (i.e. in the direction of axis Z), and two rounded arcs; these two rounded arcs define the upper and lower ends of wall 10, with the middle portion located therebetween, and the upper and lower ends connect to the upper and lower regions of wall 9, respectively, thereby closing the cross-section of pipe 6.

[0050] For clarity, in this article and the following text, terms such as low, high, above, below, upward, and downward are all referred to with respect to the yaw axis Z, and more specifically to the direction of gravitational acceleration.

[0051] Specifically, the curved shape or orientation of the aforementioned wall or attached wall 10 is recessed towards the wall 9. Through the horizontal plane ( Figure 4 The wall 10 is cut in half, that is, the horizontal plane is parallel to the plane containing the X and Y axes. The wall 10 presents an outline or a closed outline, which has the foremost leading edge 10b and the rearmost trailing edge 10c.

[0052] The leading edge 10b and the trailing edge 10c define the corresponding edges of the inlet opening 7 and the outlet opening 8, respectively and independently.

[0053] The closed profile, according to (or in a non-limiting manner, in) the cross section obtained from the aforementioned horizontal plane (hereinafter more simply referred to as the horizontal section), specifically, the wall 10 has a convex surface 10d on one side facing the outer side of the motor vehicle 1 (or more generally, the outermost lateral side of the wall 10 in the Y-axis direction) (e.g., in a non-limiting manner, according to the horizontal section or on the horizontal section), and on the other opposite side in the Y-axis direction, a convex surface 10e facing the wall 9 (or more generally, the innermost lateral side of the wall 10 in the Y-axis direction) (e.g., in a non-limiting manner, according to the horizontal section or on the horizontal section).

[0054] Depending on possible non-limiting aspects, in this specification, the horizontal section is the front bumper 3 in the horizontal plane (e.g., as shown in the image). Figure 4 The cross section shown is parallel to the plane containing axes X and Y or orthogonal to axis Z.

[0055] Surface 10d defines the outer side end face of the front bumper 3, which is directly exposed to the outer side of the front bumper. In fact, surface 10d defines the outermost side of the front bumper 3.

[0056] According to the horizontal section (or, in a non-limiting manner, on the horizontal section), surface 10d (or, in a non-limiting manner, its contour on the horizontal section) is recessed toward the inside of the front bumper 3 or the motor vehicle 1, that is, its concavity faces toward that inside or the vertical center plane. The concavity of the suction surface 10d (or, in a non-limiting manner, its contour on the horizontal section), more specifically, is oriented independently of segment K2 according to one of the aforementioned tilt axes (the one associated with segment K2), and its existence is not necessary for defining that tilt axis.

[0057] Similarly, according to the horizontal section (or, in a non-limiting manner, on the horizontal section), surface 10e (or, in a non-limiting manner, its contour on the horizontal section) is recessed toward the outer side of the front bumper 3 or the motor vehicle 1, that is, its concavity faces the same outer side. The concavity of surface 10e (or, in a non-limiting manner, its contour on the horizontal section), also independently of what has been described above, is still oriented according to one of the aforementioned tilt axes (the one associated with segment K2).

[0058] Preferably, the wall 10 has a groove 11 in its front portion (especially on the leading edge 10b) along the longitudinal direction (along the chord of the closed profile of the wall 10, i.e. the straight segment connecting the edges 10b and 10c in the horizontal section), more specifically in the shape of a wedge or a V.

[0059] In fact, thanks to the closed cross-section of pipe 6, especially the configuration of walls 9 and 10, as will be clearly explained below, pipe 6, particularly in section K1, defines a compression zone inside pipe 6, which corresponds to the generation of downward loads acting on the lower surface or bottom surface of pipe 6 (located between walls 9 and 10).

[0060] Walls 9 and 10 have their own surfaces that laterally define or delineate the pipe 6 between them.

[0061] According to one possible non-limiting aspect, the corresponding surfaces of walls 9 and 10 are fixed surfaces of the front bumper 3.

[0062] The surface of wall 9 (i.e. the surface that laterally defines pipe 6), denoted by symbol 9b in this document, is the innermost side surface of pipe 6.

[0063] The surface of wall 10 (i.e. the surface that laterally defines pipe 6) is specifically (but not usually necessary) defined herein by surface 10e, which is the outermost side of pipe 6.

[0064] Surface 9b has (for example, in a non-limiting manner, according to the horizontal section or on the horizontal section, such as) Figure 4 (As shown) at least one recess 9c, which specifically defines the pipe 6 laterally at section K2. The recess 9c (or, in a non-limiting manner, its profile in the horizontal section) has a concave shape (e.g., in a non-limiting manner, depending on the horizontal section or on the horizontal section, such as...). Figure 4 As shown), the concave shape is oriented toward the outside of the front bumper 3 or the motor vehicle 1 along axis Y, and more specifically, the concave shape is oriented along one of the aforementioned inclined axes (the same inclined axis associated with segment K2).

[0065] Therefore, the concave shape of the recess 9c (or, in a non-limiting manner, its profile in the horizontal section) also faces the front bumper 3 or the front of the motor vehicle 1.

[0066] Surface 9b also specifically has (for example, in a non-limiting manner, according to a horizontal section or on a horizontal section, such as) Figure 4 As shown, a protrusion 9d specifically defines the pipe 6 laterally at section K1; the curvature of the protrusion 9d (or, in a non-limiting manner, the curvature of its profile in the horizontal section) is oriented opposite to the curvature of the recess 9c. As will be explained more clearly below, another protrusion continuous with the recess 9c may be constructed downstream of the recess 9c, at the outlet opening 8.

[0067] Recess 9c is opposite to at least one other recess on the outermost transverse surface of pipe 6, which is specifically defined herein by surface 10e. For example, this other recess is the entire pressure surface 10e. Generally, the concavity of this other recess (or, in a non-limiting manner, its profile in a horizontal section) is directed toward the outside of the front bumper 3 or the vehicle 1, or more specifically, oriented according to one of the aforementioned inclined axes (the same inclined axis associated with segment K2).

[0068] Preferably, but not necessarily, the pipe 6 extends from the inlet opening 7 toward the outlet opening 8, or more precisely, to the outlet opening 8, in a convergent-expanding configuration, specifically converging along section K1 and expanding along section K2.

[0069] The convergence-expansion configuration itself is not necessary, so the pipe 6 may adopt a convergence configuration only, or a convergence configuration at least along the first section (e.g., starting from the inlet opening 7, or located at the inlet opening 7, specifically section K1), while alternatively adopting a uniform cross-section configuration or an expansion configuration only, without loss of generality.

[0070] The converging section of pipe 6 favorably promotes the formation of the aforementioned compression zone.

[0071] In addition to the front bumper 3, the front part 2 also includes the front part of the side wall 4, and / or specifically includes wheel arches or more simply wheel arches 14, or fenders, and the wheel arches or fenders more specifically form part of the side wall 4.

[0072] The wheel arch 14 or fender defines the lower wheel well for accommodating the wheels 15 of the motor vehicle 1.

[0073] Here, wheel arch 14 or fender should be understood as an element having an outer surface, specifically an arcuate shape about axis Y, i.e., in the direction of axis Y, the side of the vehicle 1 or sidewall 4 is (specifically directly) exposed to and / or facing the outer side of the front bumper 3 or vehicle 1. Wheel arch 14 or fender may also be understood as being defined by or constituted by the aforementioned outer surface.

[0074] The front bumper 3 has an edge surface 16 that is flush with or aligned with the wheel arch 14 or fender (i.e., its outer surface) and defines the rearmost edge 17 of the exit opening 8. The foremost edge of the exit opening 8 is defined by the trailing edge 10c of the wing 10. Preferably, edges 17 and 10c are aligned with each other in a direction parallel to axis X. Specifically, for example, similar to the wheel arch 14 or fender, the edge surface 16 is located laterally outside the sidewall 4 or the vehicle 1, i.e., it is exposed (specifically directly) to and / or towards the outer side of the front bumper 3 or the vehicle 1 in the direction of axis Y.

[0075] In other words, generally speaking, the outlet opening 8 is actually a "hole" on the side end 5 that is transverse to, or more precisely, orthogonal to, the axis Y. On the other hand, independently, the inlet opening 7 is actually a "hole" on the front wall of the front bumper 3 or the side end 5 that is transverse to (optionally orthogonal to) the axis X.

[0076] The front bumper 3 preferably includes a rounded corner surface 20 that defines a rounded corner between the recess 9c and the edge surface 16. Accordingly, this rounded corner forms an inflection point between the recess 9c and the edge surface 16 (e.g., in a non-limiting manner, on a horizontal cross-section, such as...). Figure 4 (As shown). Specifically, the edge surface 16 is generally orthogonal to the axis Y, while the concavity of the recess 9c (or, in a non-limiting manner, its profile in the horizontal section) faces forward and / or outward of the front bumper 3. The rounded corner surface 20 preferably protrudes outward toward the outside of the motor vehicle 1 (e.g., in a non-limiting manner, depending on the horizontal section or on the horizontal section, such as...). Figure 4 (As shown).

[0077] Surface 10d is preferably configured to guide a portion of the airflow from the front impact leading edge 10b to the sidewall 4, wheel arch 14, or fender (i.e., to keep the airflow attached to the sidewall 4 or wheel arch 14). Preferably, another portion of the aerodynamic flow introduced into the duct 6 is guided to the sidewall 4, wheel arch 14, or fender via the rounded corner surface 20 and the edge surface 16.

[0078] As can be seen from the above, the advantages of the front bumper 3 or the motor vehicle 1 according to the present invention are obvious.

[0079] The duct 6 (specifically formed by the closed profile of the recess 9c and the wall 10) forms a compression zone, which increases the aerodynamic load on the motor vehicle 1.

[0080] Furthermore, the surface 10d and the duct 6 together keep the aerodynamic flow attached to the sidewall 4 and the wheel arch 14, thereby improving the aerodynamic efficiency of the motor vehicle 1.

[0081] Finally, it is obvious that modifications and variations can be made to the front bumper 3 or the motor vehicle 1 according to the present invention, and such modifications and variations do not exceed the protection scope defined by the protected technical solution.

[0082] Specifically, the number and shape of the components described and illustrated may vary.

[0083] Based on the selected reference datum, each component can be positioned further inside or further outside along the Y-axis.

[0084] Furthermore, the described embodiments can be combined with each other without limitation, especially with respect to the various features described individually in each paragraph of the specification. Each of the above features can be independently applied to various embodiments of the present invention.

Claims

1. A front bumper (3) for a motor vehicle (1), the front bumper including a side end (5) having a through conduit (6) extending longitudinally along a curve axis (K) and having a closed cross-section relative to the curve axis (K), and the through conduit (6) being defined within... - The entrance opening (7) facing the front of the front bumper (3), and - Between the outlet opening (8) facing the outside of the front bumper (3).

2. The front bumper according to claim 1, wherein, -The inlet opening (7) also faces the center of the front bumper (3), and / or - The outlet opening (8) also faces the rear of the front bumper (3).

3. The front bumper according to claim 1 or 2, wherein, The curved axis (K) extends from the inlet opening (7) toward the outlet opening (8) and has a first inflection point (F) between the foremost first section (K1) and the rearmost second section (K2). The concave shapes of the first section and the second section (K1, K2) are respectively directed toward the inner and outer sides of the front bumper (3) according to the pitch axis (Y) of the motor vehicle.

4. The front bumper according to any of the preceding claims, wherein, The through pipe (6) is laterally defined between the innermost side (9) and the outermost side (10e), the innermost side (9) having at least a first recess (9c), the concave shape of the first recess (9c) being oriented toward the outside of the front bumper (3) according to the pitch axis (Y) of the motor vehicle.

5. The front bumper according to claim 4, wherein, The concave shape of the first recess (9c) also faces the front of the front bumper (3).

6. The front bumper according to claim 4 or 5 further includes a profiled wall (10) that defines the outermost side surface (10e) on one side and an outer side surface end face (10d) directly exposed to the outside of the front bumper (3) on the other side with the pitch axis (Y) as the opposite side.

7. The front bumper according to claim 6, wherein, The first recess (9c) is opposite to the second recess on the outermost side (10e), and the concave shape of the second recess faces the outside of the front bumper (3).

8. The front bumper according to claim 7, wherein, The outer side end face (10d) is recessed toward the inside of the front bumper (3).

9. The front bumper according to any of the preceding claims, wherein, The through pipe (6) extends from the inlet opening (7) toward the outlet opening (8) and has at least one section with a converging or convergent-expanding configuration, specifically converging along the first section (K1) at the foremost point of the curve axis (K) and expanding along the second section (K2) at the rearmost point of the curve axis (K). More specifically, the curve axis has a first inflection point (F) between the first section and the second section (K1, K2), and the concave shapes of the first section and the second section (K1, K2) are respectively directed toward the inner and outer sides of the front bumper (3) according to the pitch axis (Y) of the motor vehicle.

10. A front part (2) of a motor vehicle, comprising Wheel arch (14), the wheel arch (14) defining a lower wheel well for receiving the wheels of a motor vehicle; and The front bumper (3) according to any one of claims 4 to 9. The front bumper (3) also includes an edge surface (16) flush with the wheel arch (14) and defining the rearmost edge (17) of the outlet opening (8). in, The front bumper (3) also includes a rounded corner surface (20) that defines a rounded corner between the first recess (9c) and the edge surface (16), wherein a second inflection point is formed between the first recess (9c) and the edge surface (16).

11. A motor vehicle (1) comprising a front bumper (3) according to any one of claims 1 to 9, or a front part (2) of a motor vehicle according to claim 10.

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