JP2018145819A - Intake manifold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake manifold device for ensuring fixation of an intercooler thereinto while suppressing its manufacturing cost in a simple construction.SOLUTION: An intake manifold 12 as part of an intake manifold device 10 includes a housing body 18 which has a plurality of branch pipes 34 and in which an intercooler 14 is stored. A plate member 74 provided at the end of the intercooler 14 is fixed to a first intercooler mounting part 44 of the housing body 18 via fastening bolts 56, and pipe connection members 92a, 92b connected to the intercooler 14 for cooling water to be supplied/discharged therein/therefrom are exposed to the outside through a through-hole 50 of the housing body 18. Gaskets 98 are provided between each of the pipe connection members 92a, 92b and the housing body 18, and seal rings 86 of nut members 84 provided at four corners of the plate member 74 each abut on the housing body 18 to secure sealability therebetween.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an intake manifold device incorporating an intercooler for cooling air.

  Conventionally, an intake manifold device in which an intercooler for cooling air passing through the inside of the intake manifold is housed is known.

  For example, as disclosed in Patent Document 1, such an intake manifold device includes a collector portion having a predetermined volume and between an intake inlet and a plurality of branch passages, and an intercooler is provided in the collector portion. It is stored. The manifold including the collector portion is formed of a resin material, and in consideration of heat shrinkage caused by high-temperature air passing through the interior, a predetermined interval is provided between the heat exchange portion of the intercooler and the inner wall surface of the collector portion. A gap is provided, and a plurality of ribs are provided for suppressing the flow of high-temperature air to the downstream side through the gap.

  However, since the intake manifold device described above is configured to hold the long side of the intercooler formed in a rectangular cross section, there is an advantage that the intercooler can be firmly fixed by increasing the number of fastening sites with bolts. On the other hand, there is a problem that it is difficult to ensure the sealing performance because the sealing portion between the two is wide.

  On the other hand, since the intercooler disclosed in Patent Document 2 is configured to hold the short side of the intercooler with respect to the case, the seal range is narrower than the intake manifold device of Patent Document 1 described above. It is easy to ensure sealing performance. On the other hand, there is a problem that the intercooler tends to vibrate with respect to the case because it is configured to be held only at one end of the intercooler on the long side of the case (cantilever structure).

  In order to solve the problems that occur in Patent Documents 1 and 2 described above, in the intake manifold device disclosed in Patent Document 3, after a pair of housings constituting the manifold is injection-molded, an intercooler is accommodated therein. Then, the end portions of the housing are welded to each other so as to ensure the sealing performance inside the housing.

International Publication No. 2014/014019 Pamphlet JP 2013-221473 A Special table 2014-515803 gazette

  However, in the intake manifold device of Patent Document 3 described above, the airtightness inside the intake manifold is ensured, but it is necessary to continuously perform from injection molding of the housing to housing of the intercooler and welding of the housings in a short time. Therefore, there is a problem that the manufacturing is very difficult and the manufacturing cost is increased. In addition, the structure is such that the intercooler is brought into close contact and fixed by heating and then cooling the housing made of a resin material, so that high accuracy is required and the manufacturing cost is increased.

  The present invention has been made in consideration of the above-described problems, and provides an intake manifold device that can reliably fix the intercooler to the inside while suppressing the manufacturing cost with a simple configuration. Objective.

In order to achieve the above object, the present invention provides an intake manifold apparatus having an intake manifold that guides air to a plurality of cylinder chambers of an internal combustion engine, and an intercooler that is built in the intake manifold and cools air.
A fastening member inserted through the intake manifold;
A fastened portion to be fastened by a fastening member provided in the intercooler;
A plate member attached to the end of the intercooler facing the inner wall of the intake manifold;
With
The intercooler is fixed to the inner wall of the intake manifold by fastening the fastening member to the fastening portion from the outside of the intake manifold, and is fixed so that the fixed portion is on the side of a plurality of branch pipes connected to the cylinder chamber. It is characterized by being.

  According to the present invention, in the intake manifold device incorporating the intercooler for cooling the air, the fastening member is inserted into the intake manifold, and the fastening member is fastened via the plate member provided at the end of the intercooler. The intercooler is fixed to the inner wall of the intake manifold by being fastened to the section from the outside of the intake manifold, and is fixed so that the fixing portion is on the branch pipe side.

  Therefore, the intake manifold and the intercooler can be securely fastened via the plate member by fastening the fastening member inserted through the intake manifold to the fastened portion of the intercooler.

  As a result, the intercooler can be reliably fixed inside the intake manifold while suppressing the manufacturing cost by adopting a simple configuration as compared with the intake manifold device and the like according to the prior art.

  The intake manifold has a first housing having a branch pipe and a second housing provided on the opposite side of the internal combustion engine with respect to the first housing, and the intercooler is fixed to the first housing side. Good. Thereby, since the first housing has the branch pipe and is formed with high rigidity, it is not necessary to set the rigidity of the intake manifold high in advance in order to fix the intercooler. Since the internal combustion engine is connected, vibration of the first housing to which the intercooler is fixed can be effectively suppressed.

  Furthermore, a seal member may be provided between the fastening member and the fastened portion.

  According to the present invention, the following effects can be obtained.

  That is, by inserting a fastening member into the intake manifold constituting the intake manifold device, and fastening the fastening member to the fastened portion from the outside of the intake manifold via the plate member provided at the end of the intercooler, An intercooler is fixed inside the intake manifold, and is fixed so that the fixing portion is on the branch pipe side. Thereby, the intake manifold and the intercooler can be reliably fastened via the plate member by fastening the fastening member inserted through the intake manifold to the fastened portion of the intercooler. As a result, the intercooler can be securely fixed to the inside of the intake manifold while suppressing the manufacturing cost with a simple configuration as compared with the intake manifold device and the like according to the prior art.

1 is an external perspective view of an intake manifold device with a built-in intercooler according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the intake manifold device of FIG. 1. It is sectional drawing along the III-III line of FIG. FIG. 3 is an exploded perspective view of the intercooler shown in FIG. 2.

  A preferred embodiment of an intake manifold device according to the present invention will be described below and described in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 10 indicates an intake manifold apparatus according to an embodiment of the present invention.

  This intake manifold device 10 is applied to a multi-cylinder (for example, four-cylinder) internal combustion engine mounted on a vehicle or the like, and cools air compressed by a supercharger (not shown) to thereby form a plurality of cylinders. Lead to the room.

  As shown in FIGS. 1 to 3, the intake manifold device 10 includes, for example, an intake manifold 12 that is injection-molded with a resin material, and an intercooler 14 that is built in the intake manifold 12. 12 is divided into a depth direction (arrow B direction) orthogonal to the width direction (arrow A direction), and a housing body (first housing) 18 having an introduction portion 16 into which air is introduced, and the housing body 18. And a cover housing (second housing) 20 joined so as to cover the opening.

  The housing body 18 is provided with an introduction portion 16 at one end along the width direction (arrow A direction). The introduction portion 16 has an introduction port 26 communicating with the inside of the housing body 18. A first passage portion 28 that is curved from the introduction port 26 and extends to the other end side along the width direction. The introduction port 26 opens in the direction perpendicular to the width direction of the housing body 18 and opens in the center of the first mounting flange 30 having a rectangular cross section.

  Then, first mounting holes 32 penetrate through the four corners of the first mounting flange 30 in the thickness direction, and intake ducts and throttle bodies for taking in air from the vehicle and supplying intake air to the internal combustion engine are connected by bolts (not shown). Z)).

  The housing body 18 is provided with a plurality of branch pipes 34 spaced apart from each other along the width direction thereof, and each of the branch pipes 34 extends along the depth direction (arrow B direction), and has one end thereof. A cylinder portion of an internal combustion engine (not shown) has a second end portion communicating with a space portion 36 (see FIG. 3) provided in the housing main body 18 and protruding forward (in the direction of arrow B1) along the depth direction. Each is connected to the head.

  The other end of the branch pipe 34 is formed with a second mounting flange 38 for fastening to the cylinder head, and the second mounting flange 38 is formed with a plurality of second mounting holes 40 spaced apart from each other by a predetermined distance. Is done.

  An intake manifold device including the branch pipe 34 by a connecting bolt (not shown) inserted through the second mounting hole 40 in a state where the second mounting flange 38 is in contact with a cylinder head end face of an internal combustion engine (not shown). 10 is fastened.

  Further, the housing body 18 is formed with a first space portion 42 extending along the width direction (arrow A direction), and is combined with a second space portion 66 of the cover housing 20 which will be described later. Configure. A first intercooler mounting portion 44 that is long in the width direction is formed in the space portion 36 in a substantially rectangular cross section, and the first intercooler mounting portion 44 is provided below the plurality of branch pipes 34. .

  The first intercooler mounting portion 44 is formed on the wall portion 46 on the front side (arrow B1 direction) along the depth direction, and the wall portion 46 is formed in a planar shape along the width direction (arrow A direction). A pair of mounting portions 48a and 48b bulge to the front side (in the direction of arrow B1) by a predetermined height with respect to the wall portion 46 are also included. The wall portion 46 is formed with a pair of insertion holes 50 arranged in the vertical direction in the vicinity of the other end portion along the width direction, and pipe connection members 92a and 92b of the intercooler 14 described later are inserted therethrough.

  The mounting portions 48a and 48b are provided above and below the wall portion 46, are formed in a straight line with a constant width along the width direction, and a pair of bolt holes 52 are provided at both ends along the width direction. Is formed, and a cover portion 53 bulging in a circular cross section is formed at the center in the width direction. That is, the bolt holes 52 are provided at the four corners of the first intercooler mounting portion 44.

  Further, the mounting portions 48a and 48b are respectively formed with bulging portions 54 bulging in the direction away from the wall portion 46, that is, in the depth direction front side (arrow B1 direction). For example, it is formed in a semicircular cross section, and a part of support stays 76a and 76b of the intercooler 14 to be described later is inserted therein.

  A fastening bolt (fastening member) 56 is inserted into the bolt hole 52 in a state where a collar 58 (see FIG. 2) formed from a metal material in a cylindrical shape is inserted, and is screwed into the intercooler 14 described later. As a result, both are fixed to the first intercooler mounting portion 44. The length of the collar 58 along the axial direction (arrow B direction) is formed to be approximately equal to or slightly shorter than the depth of the bolt hole 52.

  The cover housing 20 is provided on the rear side in the depth direction (arrow B2 direction) with respect to the housing body 18, and has a substantially curved cross section when viewed from the width direction (arrow A direction) (see FIG. 3). The cover housing 20 has a second passage portion 60 formed on one end side along the width direction thereof, and constitutes an introduction passage 62 by being combined with the first passage portion 28 of the housing body 18. .

  In the cover housing 20, a plurality of connection pipes 64 are formed in the upper part on the other end side with respect to the second passage part 60, and connected to the branch pipe 34 of the housing body 18, and the connection pipe 64. A second space portion 66 extending along the width direction is formed below the first space portion. The second space portion 66 is combined with the first space portion 42 of the housing body 18 to form the space portion 36.

  The second space portion 66 is formed with a second intercooler mounting portion 68 that is elongated along the width direction (the direction of the arrow A). The second intercooler mounting portion 68 is shown in FIG. Further, a support wall 70 that protrudes substantially perpendicular to the inner wall surface of the cover housing 20 and can hold a heat exchange portion 72 of the intercooler 14 described later is provided. The support wall 70 is formed in a straight line along the width direction of the cover housing 20.

  And the cover housing 20 is joined by vibration welding etc. so that the opening part of the housing main body 18 may be block | closed, and the intake manifold 12 is comprised.

  As shown in FIGS. 1 to 4, the intercooler 14 has, for example, a rectangular parallelepiped shape that is long in the width direction, and includes a plurality of cooling water passages (not shown) through which cooling water flows. A heat exchange part 72 having a plate member 74 that covers an end of the front side in the depth direction (arrow B1 direction) orthogonal to the width direction of the heat exchange part 72, and a pair of support stays attached to the plate member 74 76a, 76b.

  For example, the plate member 74 is formed in a plate shape from a metal material such as aluminum, and is fixed by welding or the like so as to cover the end of the heat exchanging portion 72 on the front side in the depth direction (arrow B1 direction). The plate member 74 is formed with four fastening portions 78 projecting in the height direction at both end portions projecting in the width direction from the heat exchanging portion 72 and spaced apart from each other in the center portion in the width direction. A pair of stay fixing portions 80 protruding in the vertical direction are formed.

  Further, the outer edge portion of the plate member 74 including the fastening portion 78 and the stay fixing portion 80 is bent so as to be substantially orthogonal to the front side in the depth direction (arrow B1 direction).

  The fastening portion 78 and the stay fixing portion 80 are each provided with a nut member (fastened portion) 84 having a screw hole 82 in the center, and the heat exchange portion 72 side (arrow B2 direction) with respect to the plate member 74. It is fixed to protrude. Further, the four nut members 84 provided in the fastening portion 78 are fitted with seal rings (seal members) 86 at the end portions on the front side in the depth direction (arrow B1 direction) via an annular groove.

  The fastening portion 78 is for fixing the intercooler 14 to the housing body 18 via the plate member 74, and the stay fixing portion 80 is used for fixing a pair of support stays 76a and 76b described later. It is done.

  In addition, a supply port (not shown) and a discharge port (not shown) through which cooling water is supplied and discharged are opened near the other end portion in the width direction of the plate member 74, and the heat exchange unit 72 is opened. And a cooling water passage (not shown). The supply port and the discharge port are fitted with cylindrical pipe connection members 92a and 92b and project from the plate member 74 by a predetermined length.

  The pipe connecting members 92a and 92b include a pipe part 94 to which a pipe (not shown) is connected, and a flange part 96 formed at the end of the pipe part 94 and having an enlarged diameter. The flange part 96 is a supply port and a discharge port. As a result, the pipe portion 94 communicates with the supply port and the discharge port.

  In addition, when the intercooler 14 is housed in the intake manifold 12, the pipe connecting members 92a and 92b are exposed to the outside through the insertion holes 50 of the housing body 18 and are connected through a pipe (not shown). Cooling water is supplied and discharged. Further, a ring-shaped gasket 98 (see FIG. 4) is provided between the flange portion 96 of the pipe connection members 92a and 92b and the housing body 18, and between the pipe connection members 92a and 92b and the housing body 18 is provided. A seal is made.

  As shown in FIGS. 2 to 4, the support stays 76 a and 76 b are formed, for example, by pressing a plate material so as to be substantially straight and long, and both end portions along the longitudinal direction (arrow A direction). A pair of the first mounting end 100 formed in the middle, the second mounting end 102 formed in the center along the longitudinal direction, and the first mounting end 100 and the second mounting end 102 connected to each other. Stay portions 104a and 104b.

  The first attachment end 100 is formed, for example, in a substantially circular cross section, and a first hole 106 is formed at the center thereof, while the second attachment end 102 is perpendicular to the longitudinal direction of the support stays 76a and 76b. The fixing bolt 110 that protrudes and is inserted into the second hole portion 108 opened at the center thereof is screwed into the nut member 84 of the stay fixing portion 80, so that the support stays 76 a and 76 b are the upper end portions of the plate member 74. And it fixes substantially parallel along the lower end part vicinity. At this time, the pair of first attachment ends 100 are respectively disposed so as to face the fastening portion 78 of the plate member 74.

  The stay portions 104a and 104b each extend toward the width direction end portion around the second attachment end 102, and a convex portion 112 is formed along the extending direction. The protrusion 112 is formed, for example, in a semicircular cross section that swells in a direction orthogonal to the extending direction, and is formed at the same time when the support stays 76a and 76b are press-molded.

  The intercooler 14 is provided so that the plate member 74 is on the housing main body 18 side (arrow B1 direction) when the intercooler 14 is housed in the first and second intercooler mounting portions 44 and 68 inside the intake manifold 12. The fastening bolt 56 inserted through the bolt hole 52 of the first intercooler mounting portion 44 is screwed into the nut member 84 of the fastening portion 78 via the first hole portion 106 of the support stays 76a and 76b. Fixed and held.

  Further, as shown in FIG. 3, the heat exchanging portion 72 of the intercooler 14 has an end at the rear in the depth direction (in the direction of arrow B <b> 2) above the support wall 70 of the second intercooler mounting portion 68 in the cover housing 20. It is held by being mounted on. As a result, the intercooler 14 is held and fixed in a substantially horizontal state inside the intake manifold 12.

  The intake manifold device 10 according to the embodiment of the present invention is basically configured as described above. Next, a case where the intercooler 14 is assembled to the intake manifold 12 will be described.

  First, as shown in FIG. 2, with the housing body 18 and the cover housing 20 constituting the intake manifold 12 separated, the intercooler 14 is mounted from the plate member 74 side to the first intercooler of the housing body 18. It inserts toward the part 44 side (arrow B1 direction). In this case, the pair of support stays 76a and 76b and the pipe connection members 92a and 92b are mounted on the plate member 74 of the intercooler 14 in advance.

  Next, the pipe connection members 92a and 92b mounted on the intercooler 14 are inserted into the insertion holes 50 of the first intercooler mounting portion 44, and the nut members 84 of the fastening portions 78 face the four bolt holes 52, respectively. To place. Then, the fastening bolt 56 is inserted from the outside of the housing body 18 into the bolt hole 52 in which the collar 58 is inserted, and the screw hole of the nut member 84 in the fastening portion 78 through the first hole portion 106 of the support stays 76a and 76b. Thread onto 82.

  Accordingly, the first attachment end 100 of the support stays 76a and 76b is fixed in contact with the attachment portions 48a and 48b of the first intercooler mounting portion 44 in the housing body 18. At this time, the seal ring 86 provided on the nut member 84 comes into contact with the first mounting end 100 of the support stays 76a and 76b, so that the sealing performance between the nut member 84 and the support stays 76a and 76b is secured. The

  In addition, the pipe connecting members 92a and 92b are exposed to the outside by a predetermined length through the insertion hole 50 of the housing body 18, and the gasket 98 attached to the flange portion 96 is connected to the wall portion 46 of the housing body 18. The sealing performance between the two is ensured by being sandwiched between the two.

  Further, the convex portions 112 of the support stays 76 a and 76 b are inserted into the bulging portion 54 of the housing main body 18 in a state of being spaced apart by a predetermined distance, and the fixing bolt 110 fixed to the stay fixing portion 80 is provided with the cover portion 53. Is inserted inside.

  The cover housing covers the opening portion on the rear side in the depth direction (arrow B2 direction) of the housing body 18 in a state where the intercooler 14 is fixed to the first intercooler mounting portion 44 of the housing body 18. 20 is mounted, and the heat exchanger 72 of the intercooler 14 is held against the support wall 70 of the second intercooler mounting portion 68.

  Finally, the opening end of the housing body 18 and the opening end of the cover housing 20 are fixed in an assembled state so as to close each other. For example, the contact surfaces are welded together by a vibration welding machine. The intake manifold device 10 is completed, in which the intercooler 14 is fixed inside the intake manifold 12 composed of the housing body 18 and the cover housing 20.

  Next, the operation of the intake manifold device 10 in which the intercooler 14 is assembled inside the intake manifold 12 as described above will be described.

  Air is supplied to the introduction portion 16 of the intake manifold 12 constituting the intake manifold device 10 through an intake duct and a throttle body (not shown), and after the air flows to the introduction passage 62 and the space portion 36, the heat of the intercooler 14 is supplied. By passing through the exchanging unit 72 from below to above, heat is exchanged with the cooling water circulating through the cooling water flow path (not shown). The cooled air is distributed to a plurality of connection pipes 64 in the cover housing 20 and supplied to a cylinder head of an internal combustion engine (not shown) through the plurality of branch pipes 34.

  As described above, in the present embodiment, the intercooler 14 is accommodated in the intake manifold 12, and the nut members 84 of the fastening portions 78 provided at the four corners of the plate member 74 from the outside of the housing body 18. The fastening bolt 56 inserted into the bolt hole 52 can be fixed by screwing. Further, the pipe connection members 92a and 92b to which the cooling water supply and discharge pipes are connected are connected to the supply port and the discharge port of the intercooler 14, and are exposed to the outside through the insertion holes 50 of the housing body 18. Yes.

  Therefore, by sealing only the bolt hole 52 and the insertion hole 50 penetrating the intake manifold 12 with the seal ring 86 and the gasket 98, the sealing performance between the intake manifold 12 and the intercooler 14 can be easily and reliably ensured. Can do.

  Further, the gasket 98 is sandwiched between the flange portions 96 of the pipe connecting members 92a and 92b and the housing body 18, and the seal ring 86 provided at the ends of the plurality of nut members 84 is supported by the support stays 76a. , 76b and sealing, the seal between the plate member 74 of the intercooler 14 and the housing main body 18 can be reliably performed using the gasket 98 and the seal ring 86 which are general-purpose products. The manufacturing cost can be reduced as compared with the intake manifold device and the like according to the technology.

  As a result, in the intake manifold device 10 in which the intercooler 14 is built, the manufacturing cost is reduced with a simple configuration, and the intercooler 14 and the intake manifold 12 are securely connected to each other while ensuring the sealing performance. It becomes possible.

  Further, the housing body 18 has a plurality of branch pipes 34 as compared to the cover housing 20 by fixing the intercooler 14 to the housing body 18 side (in the direction of arrow B1) having the plurality of branch pipes 34. Therefore, it is not necessary to set the rigidity of the intake manifold 12 high in advance in order to fix the intercooler 14.

  Further, since a heavy cylinder head of an internal combustion engine is connected to the branch pipe 34, a structure is provided in which the plate member 74 of the intercooler 14 having a weight is fixed to a portion close to the branch pipe 34. The vibration of the intake manifold 12 can be suppressed.

  Furthermore, since the plate member 74 of the intercooler 14 can be fixed within the length range along the extending direction of the branch pipe 34, the holding strength of the intercooler 14 can be further increased.

  Still further, by inserting a cylindrical collar 58 made of a metal material into the bolt hole 52 of the housing body 18 made of a resin material, the fastening bolt 56 inserted through the bolt hole 52 is connected to the nut of the intercooler 14. When screwing and fastening to the member 84, the end of the fastening bolt 56 abuts against the collar 58, so that an axial tightening load is applied to the collar 58 and applied directly to the bolt hole 52. Is avoided. Therefore, the housing body 18 is prevented from being crushed and deformed by the tightening load of the fastening bolt 56.

  In addition, the intake manifold device according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Intake manifold apparatus 12 ... Intake manifold 14 ... Intercooler 16 ... Introduction part 18 ... Housing main body 20 ... Cover housing 34 ... Branch pipe 36 ... Space part 44 ... 1st intercooler mounting part 46 ... Wall part 48a, 48b ... Installation Part 50 ... Insertion hole 52 ... Bolt hole 56 ... Fastening bolt 68 ... Second intercooler mounting part 72 ... Heat exchange part 74 ... Plate member 76a, 76b ... Support stay 84 ... Nut member 86 ... Seal ring 92a, 92b ... Pipe connection Member 98 ... Gasket

Claims (3)

In an intake manifold device having an intake manifold that guides air to a plurality of cylinder chambers of an internal combustion engine, and an intercooler that is built in the intake manifold and cools the air,
A fastening member inserted through the intake manifold;
A fastened portion provided in the intercooler and fastened by the fastening member;
A plate member attached to an end of the intercooler facing the inner wall of the intake manifold;
With
A plurality of branch pipes in which the intercooler is fixed to the inner wall of the intake manifold by fastening the fastening member from the outside of the intake manifold to the fastened portion, and the fixing portion is connected to the cylinder chamber The intake manifold device is fixed so as to be on the side. The intake manifold device according to claim 1, wherein
The intake manifold includes a first housing having the branch pipe;
A second housing provided on a side opposite to the internal combustion engine side with respect to the first housing;
Have
The intake manifold device, wherein the intercooler is fixed to the first housing side. The intake manifold device according to claim 1 or 2,
An intake manifold device, wherein a seal member is provided between the fastening member and the fastened portion.

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