Intake manifold device

Abstract

This intake manifold device (10) comprises: an internal combustion engine-side member (16) that is fastened to an internal combustion engine (12); and a port member (18) that has a second connection part (52) connected to the internal combustion engine-side member (16) and is formed from a resin material. The internal combustion engine-side member (16) has a receiving part (28) that extends from an air passage part (24) toward another end. A port part (54) of the port member (18) has a support part (20). When a load (F) in the connection direction of a first and the second connection part (34, 52) acts on the port part (54), the support part (20) is supported by the receiving part (28), and the port part (54) is supported by the support part (20).

Description

[Technical Field]

[0001] The present invention relates to an intake manifold arrangement for distributing and supplying air to an internal combustion engine. [Background technology]

[0002] The intake manifold device disclosed in JP 2012-7581 A includes a resin intake manifold. The intake manifold includes a surge tank portion located at the front of the vehicle on which the engine is mounted, and a branch pipe portion branching from the surge tank portion and connecting to the engine's intake port. When a vehicle equipped with the intake manifold device is hit by a frontal collision, the lower portion of the intake manifold rotates toward the engine (forward) with the upper end of the branch pipe portion connected to the engine as a fulcrum. The lower end of the branch pipe portion sinks into the surge tank portion located at the front, preventing contact between the intake manifold device and engine parts (fuel piping). Summary of the Invention

[0003] Generally, in the engine compartment of a vehicle, a fuel pipe through which fuel flows is often arranged near an intake manifold device. For example, in the intake manifold device disclosed in JP 2012-7581 A, if the fuel pipe is arranged near the connection between the upper end of the engine branch pipe and the engine, there is a concern that the branch pipe may move upward in the event of a vehicle collision, causing contact between the fuel pipe and the branch pipe.

[0004] The present invention aims to solve the above-mentioned problems.

[0005] An aspect of the present invention is an intake manifold device connected to an internal combustion engine, the intake manifold device comprising: an internal combustion engine side member fastened to the internal combustion engine and including a ventilation portion provided with a first connection portion; a port member formed from a resin material and including a second connection portion connected to the first connection portion of the internal combustion engine side member; and a port portion connected to the second connection portion and having an internal flow path through which air flows, the port portion having a curved shape that is convex in a direction away from the internal combustion engine side member in the connection direction between the first connection portion and the second connection portion, and the port portion curves from one end side where the second connection portion is provided to the other end side opposite the side where the second connection portion is provided, the internal combustion engine side member has a receiving portion extending from the ventilation portion toward the other end side, and a support portion is arranged between the receiving portion and the port portion, and when a load acts on the port portion in the connection direction, the support portion is supported by the receiving portion, and the port portion is supported by the support portion.

[0006] According to the present invention, when an impact load acts on a port portion of a port member having a flow passage, causing stress to act in a direction that bends the port portion, the support portion is supported by the receiving portion of the internal combustion engine-side component, and the port portion is therefore supported by the support portion. This allows stress concentration to occur on the side of the port portion opposite the portion supported by the support portion. This makes it possible to control the location of fracture in the port portion when an impact occurs. By setting the stress concentration location at a location away from fuel system components arranged near the internal combustion engine, it is possible to protect the fuel system components. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an overall front view of an intake manifold device according to an embodiment of the present invention. [Figure 2] FIG. 2 is an overall side view of the intake manifold device of FIG. [Figure 3] FIG. 3 is an exploded perspective view of the intake manifold device. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5]FIG. 5 is an overall side view showing the internal combustion engine side member. [Figure 6] FIG. 6 is an enlarged side view of the vicinity of the support portion of the port member. [Figure 7] 7 is an enlarged front view showing the periphery of the support portion and the receiving portion of the intake manifold device of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] The intake manifold device 10 according to the present embodiment is mounted, for example, in an engine compartment located in the front of a vehicle, and supplies air to an internal combustion engine 12 having a plurality of cylinders (cylinder chambers). In the engine compartment, the intake manifold device 10 is located, for example, in front of or behind the internal combustion engine 12 and connected to the internal combustion engine 12. In this case, the internal combustion engine 12 is arranged transversely with a plurality of cylinders aligned along the vehicle width direction. Note that the internal combustion engine 12 to which the intake manifold device 10 is applied may have a plurality of cylinders aligned along the vehicle length direction (front-rear direction) of the vehicle. The intake manifold device 10 may be arranged on the right or left side of the internal combustion engine 12 in the vehicle width direction. The intake manifold device 10 may also be applied to an internal combustion engine 12 of a moving body other than a vehicle (for example, a ship, an aircraft, etc.). Below, a case will be described in which the intake manifold device 10 is arranged in front of and connected to an internal combustion engine 12 having three cylinders (cylinder chambers).

[0009] As shown in FIG. 1, the intake manifold device 10 has a manifold body 14. The manifold body 14 is formed by molding from a resin material. The manifold body 14 includes an internal combustion engine side member 16, a port member 18, and a support portion 20. The manifold body 14 is composed of two separate bodies: the internal combustion engine side member 16 and the port member 18. The internal combustion engine side member 16 and the port member 18 are connected to each other by welding or the like. Hereinafter, the direction in which the internal combustion engine side member 16 and the port member 18 are connected to each other as shown in FIG. 1 will be referred to as the connection direction (arrow X direction). Note that the direction of arrow X2 in FIG. 1 indicates the front of a vehicle on which the intake manifold device 10 is mounted.

[0010] The internal combustion engine side member 16 has a ventilation portion 24, a first tank forming portion 26, and a receiving portion .

[0011] 2, the air introduction section 22 is disposed at one widthwise end of the port member 18. An inflow passage 30 (see FIG. 3) that can introduce air opens into the air introduction section 22.

[0012] As shown in FIG. 1 , the ventilation section 24 has an engine-side connection section 32 connected to the internal combustion engine 12 and a first connection section 34 connected to the port member 18. An end of the engine-side connection section 32 is formed flat and connected to the connection surface 12b of the cylinder head 12a of the internal combustion engine 12. The engine-side connection section 32 is disposed at one end of the ventilation section 24 in the connection direction (direction of arrow X). The first connection section 34 is disposed at the other end of the ventilation section 24 in the connection direction (direction of arrow X). That is, the engine-side connection section 32 and the first connection section 34 are disposed on opposite sides of the ventilation section 24 in the connection direction (direction of arrow X). The first connection section 34 has a first connection surface 34a that is perpendicular to the connection direction.

[0013] 2, three ventilation sections 24 are provided corresponding to the three cylinders (cylinder chambers) of the internal combustion engine 12. The three ventilation sections 24 are arranged side by side in the width direction (arrow Y direction) of the internal combustion engine side member 16. The three ventilation sections 24 are spaced apart from one another in the width direction. The width direction of the internal combustion engine side member 16 is perpendicular to the connection direction (arrow X direction) of the intake manifold device 10 and is the direction in which the branch pipes 68 of the port member 18 are arranged side by side.

[0014] As shown in Fig. 4, each ventilation section 24 has an introduction passage 36 that can introduce air into each cylinder of the internal combustion engine 12. Each introduction passage 36 is disposed inside the ventilation section 24 and extends in the extension direction of the ventilation section 24. The introduction passage 36 penetrates from the engine-side connecting section 32 to the first connecting section 34. The introduction passage 36 has a first opening 38 that opens at the first connecting surface 34a of the first connecting section 34. The ventilation section 24 and the introduction passage 36 (first opening 38) have a generally rectangular shape that is elongated in the width direction (direction of arrow Y) of the internal combustion engine-side member 16 (see Fig. 2).

[0015] When the engine-side connecting portion 32 of the ventilation portion 24 is connected to the connecting surface 12b of the internal combustion engine 12, each cylinder chamber of the internal combustion engine 12 communicates with each introduction passage 36. The direction of arrow Z shown in Fig. 1 is the up-down direction that is perpendicular to the connecting direction (direction of arrow X) and perpendicular to the width direction (direction of arrow Y). The direction of arrow Z is the direction along the first connecting surface 34a of the first connecting portion 34.

[0016] The first tank-constituting portion 26 constitutes a part of the surge tank 40. The first tank-constituting portion 26 is disposed away from the ventilation portion 24 in the Z direction. As shown in FIG. 3, the first tank-constituting portion 26 has a split shape that opens on the port member 18 side (in the direction of arrow X2). The first tank-constituting portion 26 bulges out in a direction away from the port member 18 (in the direction of arrow X1) and has a space inside. The first tank-constituting portion 26 is fixed to the internal combustion engine 12. The first tank-constituting portion 26 is fixed to the internal combustion engine 12 at a position away from the connection surface 12b of the internal combustion engine 12 in the Z direction (see FIG. 1).

[0017] The receiving portions 28 extend from each ventilation portion 24 toward the first tank-forming portion 26. The receiving portions 28 connect the ventilation portions 24 and the first tank-forming portion 26. The receiving portions 28 have a first extending end portion 42 connected to the ventilation portion 24, a second extending end portion 44 connected to the first tank-forming portion 26, and a receiving portion main body 46 connecting the first extending end portion 42 and the second extending end portion 44. The receiving portions 28 have a predetermined width in the width direction of the internal combustion engine-side member 16 (the direction of arrow Y in FIG. 5 ), and extend from the first extending end portion 42 toward the second extending end portion 44 with approximately the same width.

[0018] The first extending end portion 42 is connected to the first connecting portion 34 of the ventilation portion 24. The first extending end portion 42 is connected to the first tank-forming portion 26 side of the first connecting portion 34. The first extending end portion 42 is disposed at the center of each ventilation portion 24 in the width direction (see FIG. 5).

[0019] The second extending end portion 44 is disposed above the first tank-forming portion 26. The second extending end portion 44 is disposed closer to the port member 18 (in the direction of arrow X2) than the first extending end portion 42. When viewed in the width direction of the intake manifold device 10 shown in FIG. 4, the first extending end portion 42 and the second extending end portion 44 are offset in the connection direction (in the direction of arrow X).

[0020] The receiving portion body 46 is inclined toward the port member 18 (in the direction of arrow X2) from the first extending end portion 42 to the second extending end portion 44. As shown in Figure 3, the receiving portion body 46 has a receiving surface 48 that faces the port member 18 and a pair of walls 50 that are disposed at the ends of the receiving surface 48. The receiving surface 48 is a smooth surface along the receiving portion body 46.

[0021] As shown in Fig. 5, the pair of wall portions 50 are disposed at both ends of the receiving surface 48 in the width direction (arrow Y direction). The wall portions 50 are formed perpendicular to the receiving surface 48 and protrude upward. The height of each wall portion 50 relative to the receiving surface 48 is constant along the receiving surface 48. The receiving surface 48 is disposed between the pair of wall portions 50.

[0022] As shown in FIG. 1, the port member 18 includes a second connecting portion 52, a port portion 54, a second tank-forming portion 58, and a rib 60.

[0023] 6, three second connection portions 52 are provided corresponding to the three cylinders of the internal combustion engine 12. The second connection portions 52 are connected to the first connection portions 34 of the internal combustion engine side member 16. The second connection portions 52 have second connection surfaces 52a that are perpendicular to the connection direction.

[0024] The second connection portion 52 has a second opening 62. The second opening 62 is disposed in a flow path 64 of the port portion 54 and communicates with the flow path 64. The second connection portion 52 and the second opening 62 have a generally rectangular shape that is elongated in the width direction (direction of arrow Y) of the port member 18. The second connection portion 52 has a pair of pipe walls 66a, 66b disposed on the outer side of the second opening 62 in the width direction. The pair of pipe walls 66a, 66b cover a portion of the second opening 62. One pipe wall 66a and the other pipe wall 66b are parallel to each other with the second opening 62 interposed therebetween. The pipe walls 66a, 66b extend along the Z direction. The shape of the second connection portion 52 corresponds to the shape of the first connection portion 34. The shape of the second opening 62 corresponds to the shape of the first opening 38. When a load is applied in the Z or X direction near the pair of pipe walls 66a, 66b at the second connection portion 52 of the port portion 54, the pipe walls 66a, 66b act as ribs, and deformation at the point where the load is applied is suppressed compared to when a load is applied in the Z or X direction near the width center of the second opening 62.

[0025] 4, the first connection surface 34a of the first connection portion 34 and the second connection surface 52a of the second connection portion 52 are welded to each other, and the first connection portion 34 and the second connection portion 52 are connected in the connection direction (the direction of arrow X). At this time, the first opening 38 and the second opening 62 are connected to each other, and each introduction channel 36 and each flow channel 64 communicate with each other.

[0026] The port portion 54 has a plurality of branch pipes 68 that are connected downstream of the surge tank 40 and distribute the air and supply it to the internal combustion engine 12. The number of branch pipes 68 corresponds to the number of cylinders of the internal combustion engine 12. Here, a case where three branch pipes 68 are provided will be described.

[0027] Each branch pipe 68 of the port portion 54 has an internal flow path 64 that is continuous with the second connection portion 52 and through which air flows. In the connection direction between the first connection portion 34 and the second connection portion 52, each branch pipe 68 has a curved shape that is convex in the direction away from the internal combustion engine-side member 16 (the direction of arrow X2). The port portion 54 curves from one end in the Z direction of the port member 18 where the second connection portion 52 is arranged to the other end in the Z direction where the second tank-forming portion 58 is arranged, which is opposite the side where the second connection portion 52 is provided.

[0028] Each branch pipe 68 of the port portion 54 has a curved inner wall 70 facing the internal combustion engine side member 16, and a curved outer wall 72 arranged on the opposite side of the curved inner wall 70. The curved inner wall 70 faces the first tank component 26 and is convexly curved in the direction away from the internal combustion engine side member 16 (the direction of arrow X2). The curved outer wall 72 is arranged outside the port member 18 and is convexly curved in the direction away from the internal combustion engine side member 16 (the direction of arrow X2).

[0029] The second tank-constituting portion 58 constitutes a part of the surge tank 40. The second tank-constituting portion 58 is disposed away from the second connecting portion 52 in the Z direction. The second tank-constituting portion 58 has a split shape that opens toward the internal combustion engine-side member 16 (in the direction of arrow X1). The second tank-constituting portion 58 bulges in a direction away from the internal combustion engine-side member 16 (in the direction of arrow X2) to have an internal space. When the internal combustion engine-side member 16 and the port member 18 are connected in the connecting direction, the first open end of the first tank-constituting portion 26 and the second open end of the second tank-constituting portion 58 are connected to each other, and the first and second tank-constituting portions 26, 58 constitute the surge tank 40. Air introduced from the air inlet portion 22 is temporarily stored in the surge tank 40. The surge tank 40 is fixed to the internal combustion engine 12 via the first tank-constituting portion 26.

[0030] The rib 60 has a generally triangular shape and connects the second tank-forming portion 58 and the curved inner wall 70 of the port portion 54. The rib 60 is a thin plate extending in the width direction (direction of arrow Y) of the port member 18. The rib 60 is disposed on the outer wall surface 58a of the second tank-forming portion 58 near the second connecting portion 52. A plurality of ribs 60 are disposed in the width direction (direction of arrow Y) of the port member 18 (see FIG. 6).

[0031] The support portion 20 is disposed between the receiving portion 28 of the internal combustion engine side member 16 and the port portion 54 of the port member 18. When a load F acts on the port portion 54 in the connection direction (the direction of arrow X1) toward the internal combustion engine side member 16, the support portion 20 is supported by the receiving portion 28, and the port portion 54 is supported by the support portion 20.

[0032] As shown in Fig. 6, the support section 20 has a pair of support members 74a, 74b. The pair of support members 74a, 74b are thin plates extending in the width direction (arrow Y direction) of the port member 18. The pair of support members 74a, 74b are arranged below each second connection section 52. Each support member 74a, 74b is integrally formed with the curved inner wall 70 of the port section 54. Each support member 74a, 74b is arranged adjacent to the second connection section 52. Each support member 74a, 74b extends from the curved inner wall 70 of the port section 54 toward the internal combustion engine side member 16. The extension direction of each support member 74a, 74b is parallel to the connection direction (arrow X direction).

[0033] When the port member 18 is viewed from the internal combustion engine-side member 16 side shown in FIG. 6 , a virtual line passing through the center of the second opening 62 of the second connection portion 52 and extending in the Z direction is defined as a port center line D. The port center line D is located between the pair of support members 74a, 74b, and the pair of support members 74a, 74b are spaced apart from each other in the width direction (arrow Y direction) perpendicular to the port center line D. The distance L between the support member 74a and the port center line D and the distance L between the support member 74b may be the same or different. The pair of support members 74a, 74b are arranged substantially parallel to the pipe walls 66a, 66b of the second connection portion 52. The support member 20 is arranged between the second connection portion 52 and the rib 60. The support member 20 is arranged on the second connection portion 52 side with respect to the rib 60 (see FIG. 4 ). In other words, the rib 60 is arranged in a direction away from the second connection portion 52 with respect to the support member 20.

[0034] As shown in FIG. 4 , each support member 74a, 74b has a support end 76 facing the receiving portion 28. The support end 76 is inclined toward the internal combustion engine side member 16 as it approaches the second connection portion 52. The inclination angle of the support end 76 and the inclination angle of the receiving portion main body 46 are substantially the same with respect to an imaginary line along the connection direction (the direction of arrow X) between the internal combustion engine side member 16 and the port member 18. The support end 76 is joined to the receiving surface 48 of the receiving portion main body 46. Alternatively, the support end 76 can abut against the receiving surface 48 of the receiving portion main body 46. A pair of support members 74a, 74b arranged at each second connection portion 52 is connected to the same receiving portion 28. The support end 76 may be joined to the receiving surface 48 of the receiving portion main body 46 by welding, adhesive, or the like. Note that the support end 76 and the receiving surface 48 may not be in contact with each other when the internal combustion engine side member 16 and the port member 18 are connected. Unlike the configuration described above, the support portion 20 may be provided integrally with the internal combustion engine side member 16. That is, the support portion 20 may protrude from the receiving portion 28 (receiving portion main body 46) toward the port portion 54 of the port member 18.

[0035] Next, the operation of the intake manifold device 10 will be described.

[0036] When the driver of the vehicle (not shown) operates the accelerator, air taken in from outside the vehicle is introduced into the surge tank 40 through the inlet passage 30 of the air inlet portion 22. After the air is temporarily stored in the surge tank 40, the air is distributed to the flow paths 64 of the branch pipes 68 of the port portion 54 in the surge tank 40. The air that flows downstream along the flow paths 64 of the branch pipes 68 is supplied sequentially to each cylinder chamber of the internal combustion engine 12 via the second opening 62 of the second connecting portion 52 and the inlet path 36 of the first connecting portion 34 of the internal combustion engine-side member 16.

[0037] Next, a case will be described in which a vehicle equipped with the intake manifold device 10 is hit from the front (the direction of arrow X2 in FIG. 1). As shown in FIG. 1, when the intake manifold device 10 is connected to the internal combustion engine 12, a fuel system member 78 for supplying fuel to the cylinder chamber of the internal combustion engine 12 is disposed above the connection portion of the first and second connection portions 34, 52. The fuel system member 78 is, for example, a fuel pipe for supplying fuel, and is disposed along the width direction of the intake manifold device 10 (the direction of arrow Y in FIG. 2) at a predetermined distance from the first and second connection portions 34, 52. The fuel system member 78 is not limited to a fuel pipe, and may be another fuel system device (for example, a valve, etc.).

[0038] When a traveling vehicle is hit from the front, a load F (also referred to as an impact load) is applied from the front to the rear (in the direction of arrow X1 in FIG. 1) to the intake manifold device 10. At this time, the upper part of the intake manifold device 10 in the Z direction is fixed to the internal combustion engine 12 via the first and second connecting portions 34, 52, and the lower part of the intake manifold device 10 in the Z direction is fixed to the internal combustion engine 12 via the surge tank 40.

[0039] When a load F acts on the port portion 54 of the port member 18 in a direction that bends the port portion 54, the load F causes the port member 18 to move relatively toward the internal combustion engine-side member 16, and the support members 74a, 74b (support ends 76) of the support unit 20 are supported by the receiving surfaces 48 of the receiving portion 28. As a result, the port portion 54 of the port member 18 is supported relative to the internal combustion engine-side member 16 by the support members 74a, 74b of the support unit 20.

[0040] As shown in FIG. 7 , the port portion 54 has high rigidity at a first region G1 where the support portion 20 is supported by the receiving portion 28 and at a second region G2 where the rib 60 is connected, but the rigidity of an intermediate region G3 between the first region G1 and the second region G2 is lower than the rigidity of the first and second regions G1, G2. Therefore, when a load F acts on the port portion 54, stress concentrates in the intermediate region G3, which has a relatively low rigidity. Because the port portion 54 is curved in the direction opposite to the acting direction of the load F (the direction of the arrow X1), when the load F is applied to the port portion 54 in a direction that bends the port portion 54, a fracture H occurs on the curved outer wall 72 side. Because the intermediate region G3 of the port portion 54 is separated by a predetermined distance from a fuel system component 78 of the internal combustion engine 12, a fractured portion of the port portion 54 is prevented from coming into contact with the fuel system component 78.

[0041] As described above, the embodiment of the present invention includes an internal combustion engine side member 16 connected to the internal combustion engine 12, and a port member 18 having a port portion 54 connected to the internal combustion engine side member 16. When a vehicle equipped with the intake manifold device 10 collides and an impact load F acts on the port portion 54 of the port member 18, causing stress to act in a direction that bends the port portion 54, the support portion 20 is supported by the receiving portion 28 of the internal combustion engine side member 16, and consequently the port portion 54 is supported on the receiving portion 28 by the support portion 20.

[0042] This allows stress concentration to occur on the side of the port portion 54 opposite to the portion supported by the support portion 20. This makes it possible to control the location of fracture H in the port portion 54 when an impact occurs. As a result, by setting the stress concentration location of the port member 18 at a location away from the fuel system component 78 arranged near the internal combustion engine 12, contact between the port member 18 and the fuel system component 78 is suitably prevented even if the port member 18 is broken, and it is possible to protect the fuel system component 78.

[0043] In the second connection portion 52 of the port member 18, a pair of support members 74a, 74b are disposed at positions spaced apart from the port center line D in the width direction (direction of arrow Y) and are supported by the receiving portion 28. Therefore, when an impact load F is applied to the port portion 54, stress is easily transmitted to the location in the port portion 54 where fracture H is desired. This allows stress concentration to occur in the port portion 54 at a position spaced apart from the fuel system member 78 during a collision, thereby more effectively protecting the fuel system member 78 from a damaged port portion 54. Stress generated between the port portion 54 and the receiving portion 28 of the internal combustion engine-side member 16 can be more reliably transmitted to the location in the port portion 54 where fracture H is likely to occur during a vehicle collision.

[0044] By providing the rib 60 on the second tank-forming portion 58 that constitutes the surge tank 40, the strength of the second region G2 to which the rib 60 is connected in the curved inner wall 70 of the port portion 54 can be relatively increased. This makes it possible to set the strength of an intermediate region G3 between the first region G1 where the support portion 20 is arranged and the second region G2 to which the rib 60 is connected to the port portion 54 relatively low. Therefore, when an impact load F is applied to the port portion 54 toward the internal combustion engine-side member 16, the port portion 54 can be broken at the intermediate region G3 between the rib 60 and the support portion 20, which is away from the second connecting portion 52.

[0045] Since the support portion 20 is provided integrally with the port portion 54, the support portion 20 can be easily provided without increasing the number of parts of the intake manifold device 10.

[0046] The above embodiment can be summarized as follows.

[0047] The above embodiment is an intake manifold device (10) connected to an internal combustion engine (12), an internal combustion engine side member (16) that includes a ventilation portion (24) provided with a first connection portion (34) and is fastened to the internal combustion engine; a port member (18) made of a resin material, the port member (18) including: a second connection portion (52) connected to the first connection portion of the internal combustion engine-side member; and a port portion (54) connected to the second connection portion and having an internal flow path (64) through which air flows; and the port portion has a curved shape that is convex in a direction away from the internal combustion engine-side member in a connection direction between the first connection portion and the second connection portion, and the port portion curves from one end side where the second connection portion is provided to the other end side opposite to the side where the second connection portion is provided, the internal combustion engine side member has a receiving portion (28) extending from the ventilation portion toward the other end side, A support portion (20) is disposed between the receiving portion and the port portion, and when a load acts on the port portion in the connection direction, the support portion is supported by the receiving portion, and the port portion is supported by the support portion.

[0048] The pair of support parts are arranged spaced apart in a direction perpendicular to the port center line (D), which passes through the center of the opening of the second connection part and extends from the one end side to the other end side, so that the port center line (D) is located between the pair of support parts when viewed from the internal combustion engine side member.

[0049] a surge tank (40) capable of storing air flowing through the flow path of the port portion, the port member integrally includes a tank component (58) that constitutes at least a part of the surge tank; an outer wall surface (58a) of the tank component on a side closer to the second connecting portion is provided with a rib (60) extending from the outer wall surface and connected to the port portion; The support portion is disposed between the second connection portion and the rib.

[0050] The support portion is provided integrally with the port portion.

[0051] The present invention is not limited to the above disclosure, and various configurations can be adopted without departing from the gist of the present invention. [Explanation of symbols]

[0052] 10... Intake manifold device 12... Internal combustion engine 16... Internal combustion engine side member 18... Port member 20...Support part 24...Ventilation part 28... Receiving portion 34... First connecting portion 52... Second connection portion 54... Port portion

Claims

1. An intake manifold device (10) connected to an internal combustion engine (12), comprising: an internal combustion engine-side member (16) that includes a ventilation portion (24) provided with a first connection portion (34) and is fastened to the internal combustion engine; a port member (18) made of a resin material, the port member including: a second connection portion (52) connected to the first connection portion of the internal combustion engine-side member; and a port portion (54) connected to the second connection portion and having an internal flow path (64) through which air flows; and the port portion has a curved shape that is convex in a direction away from the internal combustion engine-side member in a connection direction between the first connection portion and the second connection portion, and the port portion is curved from one end side at which the second connection portion is provided to another end side that is opposite to the side at which the second connection portion is provided, the internal combustion engine side member has a receiving portion (28) extending from the ventilation portion toward the other end side, The port member is a support portion (20) and a rib (60) facing the receiving portion and protruding from the curved inner wall (70) of the port portion toward the receiving portion; The support portion and the rib are disposed apart from each other in an extending direction of the curved inner wall, an intake manifold device wherein, when a load acts on the port portion in the connection direction, the support portion and the rib each abut against the receiving portion and are supported by the receiving portion, and the port portion is supported by the support portion and the rib.

2. 2. The intake manifold device according to claim 1, an intake manifold device in which a pair of support parts are arranged spaced apart in a direction perpendicular to a port center line (D), which passes through the center of an opening of the second connection part and extends from the one end side to the other end side, when viewed from the internal combustion engine side member.

3. 3. The intake manifold device according to claim 2, a surge tank (40) capable of storing air flowing through the flow path of the port portion, The port member integrally includes a tank component (58) that configures at least a portion of the surge tank, the rib is provided on an outer wall surface (58a) of the tank-constituting portion on a side closer to the second connection portion, and extends from the outer wall surface to be connected to the port portion; an intake manifold device, wherein the support portion is disposed between the second connection portion and the rib.

4. The intake manifold device according to any one of claims 1 to 3, The support portion is provided integrally with the port portion.

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