JP6399074B2 - Engine intake system with intercooler - Google Patents

Description

  The present invention relates to an intake device for an engine with an intercooler.

  Vehicles are required to have a smaller engine system and a simplified intake system layout. For this reason, an intake device having a configuration in which an intercooler is accommodated in an intake manifold has been proposed (Patent Document 1).

  Patent Document 1 discloses a configuration in which an intake manifold is provided with a cylindrical portion that accommodates an intercooler in an intermediate portion in the flow direction of intake air. The intake manifold proposed in Patent Document 1 is made of a resin material.

International Publication WO2014 / 014019

  However, in the intake device configured to accommodate the intercooler in the intake manifold as proposed in Patent Document 1, it is difficult to further reduce the size while suppressing the deterioration of the intake cooling performance. Conceivable. In other words, in the intake device configured to accommodate the intercooler in the intake manifold according to the prior art, in order to further reduce the size, it is necessary to reduce the size of the intercooler accommodated inward, and the intake air cooling performance Will be worsened.

  The present invention has been made to solve the above-described problems, and provides an intake device for an engine with an intercooler that can be further reduced in size while suppressing deterioration in intake air cooling performance. The purpose is to do.

  An intake device for an engine with an intercooler according to an aspect of the present invention has an intake manifold that houses the intercooler and is attached to a cylinder head in the engine of the vehicle.

  The intake manifold includes an I / C housing cylinder portion and a front side intake passage portion.

The I / C housing cylinder is a tubular body made of a resin material , and houses the intercooler inside the cylinder.

The front side intake passage portion than said I / C containing cylinder portion is disposed on the front side of the vehicle Rutotomoni is arranged on the upstream side of the I / C containing cylinder portion in the flow direction of the intake air.

In this aspect, the I / C housing cylinder portion has an upstream opening that opens toward the front side of the vehicle, and the front intake passage portion and the intake passage communicate with each other at the upstream opening. The front intake passage portion has an outer shell formed by a passage cover connected so as to close the upstream opening in the I / C housing cylinder portion from the front side of the vehicle, and in the front-rear direction of the vehicle. The passage cover is made of a metal material, the outer surface faces the front side of the vehicle, and the inner surface faces the upstream opening side of the I / C housing cylinder part. With this configuration, the vehicle is disposed in a region that receives the traveling wind when the vehicle is traveling.

  In the said aspect, while the passage cover surrounding the front side intake passage part is comprised from the metal material, the structure by which the said passage cover is distribute | arranged to the area | region which receives driving wind is employ | adopted. Therefore, the air flowing in the intake manifold is cooled not only in the intercooler but also in the front intake passage portion. That is, the air flowing in the intake manifold is cooled by the traveling air through the passage cover made of a metal material, and the intercooler can be reduced in size by the amount of cooling by the traveling air.

In the above aspect, since the front intake passage portion is disposed upstream of the I / C housing cylinder portion in the intake air flow direction, the air introduced into the intake manifold passes through the passage cover. Thus, rough heat is taken by the traveling wind and then further cooling is performed by the intercooler (I / C). Therefore, cooling is performed with high efficiency.
In addition, in the said aspect, since only the channel | path cover consisting of a metal material is employ | adopted, it can avoid that an intake device enlarges by this.

  Therefore, in the above aspect, it is possible to further reduce the size while suppressing the deterioration of the intake air cooling performance.

  An intake device for an engine with an intercooler according to another aspect of the present invention has the above-described configuration, wherein the engine is provided with a crankshaft disposed in a direction along a width direction of the vehicle (a horizontally mounted engine), The intake manifold is disposed on the front side of the vehicle with respect to the engine.

  In the above aspect, since the intake manifold is disposed on the vehicle front side with respect to the horizontally placed engine, the intake manifold is hardly affected by the heat from the engine. Therefore, in the said aspect, cooling of the air via a channel | path cover is performed more effectively.

An intake device for an engine with an intercooler according to another aspect of the present invention has the above-described configuration, wherein the passage cover is provided in a state along the extending direction of the front intake passage portion, and the front intake passage portion Then, the upstream opening in the flow direction of the intake air is provided at the end in the extending direction.

In the above aspect, since the passage cover is provided in the direction along the extending direction of the front-side intake passage portion (the direction intersecting the front-rear direction of the vehicle), the area where the traveling wind contacts can be increased. The cooling performance can be improved.

An intake device for an engine with an intercooler according to another aspect of the present invention has the above-described configuration, wherein the passage cover includes a plurality of bulging portions formed by bulging a part of the outer wall of the passage cover outward. The plurality of bulging portions extend in the extending direction of the front intake passage portion in a front view from the front side of the vehicle, and are juxtaposed in the vertical direction of the vehicle. The front-side intake passage portion includes an inner recess recessed in the front side of the vehicle corresponding to each of the plurality of bulge portions on the inner surface side of the passage cover.

In the above aspect, since a part of the outer wall of the passage cover is bulged (because the bulging portion is provided), this also increases the contact area with the traveling wind in the passage cover and improves the cooling performance. Can be planned.

An intake device for an engine with an intercooler according to another aspect of the present invention has the above-described configuration, wherein the passage cover has a valley-like shape recessed on the rear side of the vehicle between the bulging portions on the outer surface side. An outer recess is provided, and a fin that protrudes outward from the outer surface of the passage cover and that intersects at least a part of the plurality of bulging portions is provided.

In the above aspect, since a part of the outer wall of the passage cover is bulged (because the bulging portion is provided), this also increases the contact area with the traveling wind in the passage cover and improves the cooling performance. Can be planned.

  An intake device for an engine with an intercooler according to another aspect of the present invention further includes a throttle valve in the above configuration.

The throttle valve is connected to the opening of the front intake passage and is disposed on a side of the intake manifold in the width direction of the vehicle.

  In the above aspect, since the throttle valve is disposed on the side of the vehicle, the throttle valve does not block the traveling wind with respect to the passage cover, and intake air cooling can be performed effectively.

  The downstream cylinder portion is a cylindrical body made of a metal material, and is arranged between the I / C housing cylinder portion and the intake port of the cylinder head in the intake air flow direction.

  In the above aspect, since the downstream cylinder portion made of a metal material is provided on the cylinder head side of the intake manifold, the intake manifold can be attached to the cylinder head with high rigidity.

  An intake device for an engine with an intercooler according to another aspect of the present invention, in the above configuration, includes a heat insulating member disposed between the downstream cylinder portion and the intake port of the cylinder head in the flow direction of intake air. Furthermore, the downstream cylinder part and the heat insulation member are further fastened to the cylinder head by a fastening member.

  In the above aspect, since the heat insulating member is interposed between the intake manifold and the cylinder head, heat transfer from the cylinder head to the intake manifold can be suppressed. Thus, the intake manifold is hardly affected by the temperature rise of the cylinder head, and the intake air cooling performance can be maintained high.

  Moreover, in the said aspect, since the downstream cylinder part and the heat insulation member are fastened together with the fastening member with respect to the cylinder head, the high attachment rigidity of the intake manifold with respect to a cylinder head is securable.

  In the intake device for an engine with an intercooler according to each of the above aspects, further downsizing can be achieved while suppressing deterioration in intake air cooling performance.

1 is a schematic side view showing a configuration of an engine 1 and its surroundings according to a first embodiment. 3 is a schematic plan view showing the configuration of the intake device 2. FIG. 2 is a schematic development view showing a configuration of an intake device 2. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. It is a schematic plan view which shows the structure of the intake device 12 which concerns on 2nd Embodiment. 3 is a schematic development view showing a configuration of an intake device 12. FIG. 2 is a schematic front view showing a configuration of an intake device 12. FIG. 3 is a schematic side view showing the configuration of the intake device 12. FIG. 3 is a schematic cross-sectional view showing a configuration of an intake manifold 13. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The form described below is one embodiment of the present invention, and the present invention is not limited to the following form except for the essential configuration.

[First Embodiment]
1. Engine 1 and intake device 2
A schematic configuration of the engine 1 and the intake device 2 according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the engine 1 has a cylinder head 1 a disposed above and a cylinder block 1 b attached below the cylinder head 1 a. The engine 1 is a multi-cylinder diesel engine, and a plurality of cylinders (four cylinders as an example in this embodiment) are arranged in a direction perpendicular to the paper surface of FIG. That is, the engine 1 is a horizontal engine that is arranged in a direction along the width direction of the vehicle.

  An intake device 2 is attached to an intake port 1c in the cylinder head 1a. The intake device 2 includes an intake manifold 3, an intercooler 4, and a heat insulating member 5. The intake manifold 3 is connected to an EGR pipe 14 of an EGR (Exhaust Gas Recirculation) device.

  The intake manifold 3 is disposed on the cylinder head 1a side, and is provided with a downstream cylindrical portion 31 disposed on the downstream side in the intake flow direction, and an upstream side (front of the vehicle) in the intake flow direction with respect to the downstream cylindrical portion 31. I / C housing cylinder part 32 arranged on the side) and a passage cover 33 attached to the front side of the vehicle with respect to the I / C housing cylinder part 32.

  Here, in this embodiment, the downstream side cylinder part 31 and the channel | path cover 33 consist of metal materials, and the I / C accommodation cylinder part 32 consists of resin materials.

  Most of the intercooler 4 is accommodated inside the cylinder of the I / C accommodating cylinder portion 32 in the intake manifold 3. In the present embodiment, the intercooler 4 is inserted into the I / C housing cylinder portion 32 from the front side of the sheet of FIG.

  The intercooler 4 is fixed to the I / C housing cylinder portion 32 using four bolts 51 to 54.

  The heat insulating member 5 is interposed between the cylinder head 1 a and the downstream side cylinder portion 31 of the intake manifold 3 in order to suppress heat transfer from the cylinder head 1 a to the intake manifold 3. And the intake manifold 3 and the heat insulation member 5 are fastened together with respect to the cylinder head 1a.

  One end of the EGR pipe 14 is connected to the vehicle upper side portion of the downstream side cylinder portion 31 in the intake manifold 3. Although not shown, the other end of the EGR pipe 14 is directly or indirectly connected to the exhaust manifold of the engine 1.

  As shown in FIG. 1, in the present embodiment, the intake device 2 is disposed on the front side of the vehicle with respect to the engine 1.

2. Detailed Configuration of Intake Device 2 The detailed configuration of the intake device 2 will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic plan view of the intake device 2 as viewed from above the vehicle, and FIG. 3 is a schematic development view showing the components of the intake device 2 in an expanded state.

  As shown in FIGS. 2 and 3, the throttle valve 6 is attached to the I / C housing cylinder portion 32 and the passage cover 33 in the intake manifold 3. The throttle valve 6 is attached to the left side of the vehicle with respect to the intake manifold 3. In other words, the throttle valve 6 is disposed on the side of the intake manifold 3 opposite to the side where the intercooler 4 is inserted.

  The throttle valve 6 is a valve for controlling the amount of intake air flowing into the intake manifold 3.

  The downstream side cylinder portion 31 is provided with an EGR distribution pipe 31a and four EGR branch pipes 31b to 31e on the upper side (front side in FIG. 2) of the vehicle. The EGR distribution pipe 31a extends in the left-right direction of the vehicle, and an opening (not shown) for connection to the EGR pipe 14 is provided at the center thereof.

  One end of each of the four EGR branch pipes 31b to 31e is connected to the EGR distribution pipe 31a, and is provided in a state of being spaced apart from each other in the left-right direction (vehicle width direction) of the vehicle. The other ends of the EGR branch pipes 31b to 31e are connected to rear side intake passage portions 31f to 31i (see FIG. 3) provided corresponding to the respective cylinders of the engine 1.

  As shown in FIG. 2, the connection portion of the EGR pipe 14 to the EGR distribution pipe 31a is the central portion of the EGR distribution pipe 31a in the vehicle width direction.

  In addition, since the EGR distribution pipe 31a and the EGR branch pipes 31b to 31e are integrally formed with the downstream side cylinder portion 31, each tube wall is also made of a metal material.

  The downstream side cylinder portion 31 and the heat insulating member 5 in the intake manifold 3 are fastened together with bolts 7 and 8 with respect to the cylinder head 1a.

  In the intake manifold 3, the downstream side cylinder part 31 and the I / C housing cylinder part 32 have eight bolts (in FIGS. 2 and 3, only four bolts 34 to 37 are shown for convenience of illustration). Are fixed to each other.

  In the intake manifold 3, the I / C housing cylinder portion 32 and the passage cover 33 are mutually connected by six bolts (only three bolts 41 to 43 are shown for convenience of illustration in FIGS. 2 and 3). Is fixed.

  As shown in FIG. 3, in the downstream side cylinder portion 31, the four rear side intake passage portions 31 f to 31 i are partitioned from each other by three partition walls 31 j to 31 l.

  The heat insulating member 5 is provided with a plurality of openings 5a to 5h arranged in the vehicle width direction. In the present embodiment, two openings 5a to 5b, 5c to 5d, 5e to 5f, and 5g to 5h are provided for each cylinder of the four-cylinder engine 1.

  The passage cover 33 is connected to the I / C housing cylinder part 32 in a state of closing the opening part on the front side of the vehicle (opening part on the front side in FIG. 3). The passage cover 33 is provided with a plurality of horizontal fins 33a extending in the vehicle width direction and a plurality of vertical fins 33b extending in the height direction on the outer surface thereof.

  The plurality of horizontal fins 33a and the plurality of vertical fins 33b intersect each other at a plurality of locations.

3. Internal Configuration of Intake Device 2 The internal configuration of the intake device 2 will be described with reference to FIG. FIG. 4 is a schematic cross-sectional view showing a IV-IV cross section in FIG.

  As shown in FIG. 4, the intake manifold 3 of the intake device 2 includes an inner front intake passage portion 33 c, a combination of a downstream tube portion 31, an I / C housing tube portion 32, and a passage cover 33. The intermediate intake passage portions 32a and 32b and the rear side intake passage portions 31f to 31i (only the rear side intake passage portion 31h is shown in FIG. 4) are in communication with each other.

  The air that has passed through the throttle valve 6 (not shown) and has been introduced into the intake manifold 3 passes through the intermediate intake passage portion 33a from the front intake passage portion 33c formed by the passage cover 33 and the intercooler 4. Flowing into.

  The air discharged from the intercooler 4 is introduced from the intermediate intake passage portion 32b to the intake ports 1c of the engine 1 through the rear intake passage portions 31f to 31i.

  The rear intake passage portions 31f to 31i are configured such that the opening cross-sectional area gradually decreases as the vehicle moves from the front side to the rear side. EGR branch pipes 31b to 31e (only the EGR branch pipe 31d is shown in FIG. 4) are opened at the rear side portions of the rear intake passage portions 31f to 31i.

  In the present embodiment, the air introduced into the intake manifold 3 is cooled by the traveling wind through the passage cover 33 in the front intake passage portion 33c, and subsequently cooled by the intercooler 4.

4). Effect In the present embodiment, a configuration is adopted in which the passage cover 33 that surrounds the front intake passage portion 33c is made of a metal material, and the passage cover 33 is arranged in a region that receives traveling wind. Therefore, the air flowing through the intake manifold 3 is cooled not only by the intercooler 4 but also by the front intake passage portion 33c. That is, the air flowing through the intake manifold 3 is cooled (air-cooled) by the traveling wind through the passage cover 33 made of a metal material, and the intercooler 4 can be reduced in size by the amount of cooling by the traveling wind. Is possible.

  In the present embodiment, only the passage cover 33 made of a metal material is employed, so that the intake device 2 does not increase in size.

  Therefore, in this embodiment, it is possible to further reduce the size of the intake device 2 while suppressing deterioration of the intake air cooling performance.

  Further, in the present embodiment, the intake manifold 3 is disposed on the vehicle front side with respect to the horizontally placed engine 1, so that the intake manifold 3 is hardly affected by the heat from the engine 1. Therefore, in the present embodiment, cooling of the air through the passage cover 33 is performed more effectively.

  In the present embodiment, the front intake passage 33c is disposed upstream of the I / C housing cylinder 32 in the intake flow direction, so that the air introduced into the intake manifold 3 is The rough heat is absorbed by the cooling by the traveling wind through the passage cover 33 and then further cooled by the intercooler 4. Therefore, cooling is performed with high efficiency.

  In the present embodiment, since a plurality of fins (a plurality of horizontal fins 33a and a plurality of vertical fins 33b) are provided on the outer surface of the passage cover 33, the contact area with the traveling wind in the passage cover 33 is wide, and cooling is performed. The performance can be improved.

  In this embodiment, since the passage cover 33 is provided in a state along the width direction of the vehicle, the area where the traveling wind contacts can be increased, and the cooling performance can be improved.

  Further, in the present embodiment, the throttle valve 6 is disposed on the side (left side) of the vehicle, so that the throttle valve 6 does not block the traveling wind with respect to the passage cover 33 and effectively performs intake air cooling. Can do.

  Moreover, in this embodiment, since the downstream cylinder part 31 which consists of metal materials is provided in the cylinder head 1a side in the intake manifold 3, the high attachment rigidity of the intake manifold 3 with respect to the cylinder head 1a is securable. .

  Moreover, in this embodiment, since the heat insulation member 5 is inserted between the intake manifold 3 and the cylinder head 1a, heat transfer from the cylinder head 1a to the intake manifold 3 can be suppressed. Thus, the intake manifold 3 is hardly affected by the temperature rise of the cylinder head 1a, and the intake air cooling performance can be maintained high.

  In the present embodiment, the downstream cylinder portion 31 and the heat insulating member 5 are fastened together with the bolts 7 and 8 with respect to the cylinder head, so that high attachment rigidity of the intake manifold 3 with respect to the cylinder head 1a is ensured. be able to.

[Second Embodiment]
1. Configuration of Intake Device 12 The configuration of the intake device 12 will be described with reference to FIGS. 5 and 6. FIG. 5 is a schematic plan view of the intake device 12 as viewed from above the vehicle, and FIG. 6 is a schematic development view in which the constituent parts of the intake device 12 are developed.

  As shown in FIGS. 5 and 6, also in the intake device 12 according to the present embodiment, the intake manifold 13 having three components (the downstream side cylinder part 131, the I / C accommodating cylinder part 132, and the passage cover 133) is provided. Prepare. The intake manifold 13 is disposed on the front side of the vehicle with respect to the engine (not shown). However, in the intake manifold 13 in the present embodiment, the downstream side cylinder part 131 and the I / C housing cylinder part 132 are integrally formed using a resin material, and in the drawings and this description, the parts are separated for convenience. .

  The passage cover 133 is made of a metal material as in the first embodiment.

  A throttle valve 6 is attached to the passage cover 133 in the intake manifold 13. The throttle valve 6 is attached to the left side of the vehicle with respect to the intake manifold 13 as in the first embodiment.

  As shown in FIGS. 5 and 6, in the intake device 12, the downstream side cylinder 131 in the intake manifold 13 has seven bolts 17 to 23 (in FIG. 6, for convenience of illustration) with respect to the cylinder head 1a. , Only bolts 17, 19, 21, 23 are shown).

  In the intake manifold 13, the passage cover 133 has six bolts 151 to 156 with respect to the I / C housing cylinder 132 (in FIG. 5 and FIG. 6, only some bolts are shown for the sake of illustration). It is fixed by.

  As shown in FIG. 6, an opening 132 a for inserting the intercooler 24 is provided on the vehicle front side in the I / C housing cylinder 132. The intercooler 24 is inserted into the inside of the cylinder of the I / C housing cylinder 132 from the opening 132a of the I / C housing cylinder 132, and the flange-shaped end is an opening in the I / C housing cylinder 132. It contacts the opening edge of the part 132a.

  The intercooler 24 has a flange-shaped end sandwiched between the opening edge of the I / C housing cylinder 132 and the passage cover 133, and together with the passage cover 133, The bolts 151 to 156 are fastened together.

  Note that the portions of the intake device 12 that are not shown and described have the same configuration as in the first embodiment.

  Although not shown, in the intake manifold 12 according to this embodiment, an EGR pipe (EGR device) is connected immediately downstream of the throttle valve 6.

2. Configuration of Passage Cover 133 The configuration of the passage cover 133 in the intake manifold 13 will be described with reference to FIGS. FIG. 7 is a schematic front view of the intake device 12 as viewed from the front side of the vehicle, and FIG. 8 is a schematic side view of the intake device 12 as viewed from the right side of the vehicle.

  As shown in FIG. 7, the passage cover 133 has a longitudinal direction that intersects with the longitudinal direction of the vehicle (vehicle width direction) along the extending direction of the front intake passage portion surrounded by the passage cover 133. Yes.

  As shown in FIGS. 7 and 8, the passage cover 133 extends in the height direction on the side opposite to the attachment side to the I / C housing cylinder 132, in other words, on the outer surface portion that is the front side of the vehicle. A plurality of vertical fins 133b are provided.

  Further, two bulging portions 133a extending in the vehicle width direction are provided in a portion of the passage cover 133 on the front side of the vehicle. The bulging portion 133a is a portion provided by subjecting a part of the plate material to a bulging process by press working or the like.

3. Internal Configuration of Intake Device 12 The internal configuration of the intake device 12 will be described with reference to FIG. FIG. 9 is a schematic cross-sectional view showing a IX-IX cross section in FIG. 5.

  As shown in FIG. 9, the intake manifold 13 of the intake device 12 has a passage cover 133 attached to the front side of the vehicle with respect to the I / C housing cylinder portion 132 that houses the intercooler 24. The passage cover 133 surrounds the front intake passage portion 133c on the upstream side of the I / C housing cylinder portion 132 in the intake flow direction. The outer surface of the passage cover 133 faces the front side of the vehicle, and traveling wind contacts the outer surface of the passage cover 133 when the vehicle is traveling.

  In the passage cover 133 according to the present embodiment, two bulging portions 133a each extending in the vehicle width direction are provided together with the vertical fins 133b. Similarly, the inner sides of the two bulged portions 133a are inner concave portions 133d that extend in the vehicle width direction.

  Further, also on the outer surface of the passage cover 133, a valley-shaped outer recessed portion 133e is formed between the bulging portion 133a and the bulging portion 133a.

  When the vehicle travels, traveling wind from the front of the vehicle flows along the surfaces of the bulging portion 133 a and the outer recess portion 133 e on the outer surface of the passage cover 133. At this time, the heat of the air flowing through the front-side intake passage portion 133c (including the inner concave portion 133d) is absorbed through the passage cover 133 made of a metal material.

  The air in the intake manifold 13 flows from the front intake passage portion 133c to the inside of the cylinder of the I / C housing cylinder portion 132 in which the intercooler 24 is housed. The air cooled by the traveling wind through the passage cover 133 is subsequently cooled by the intercooler 24.

4). Effect Also in this embodiment, the passage cover 133 that surrounds the front intake passage portion 133c is made of a metal material, and the passage cover 133 is arranged in a region that receives traveling wind. . Therefore, the air flowing in the intake manifold 13 is cooled (air-cooled) by the traveling wind through the passage cover 133 made of a metal material, and the intercooler 24 can be downsized by the amount of cooling by the traveling wind. Is possible.

  Therefore, in this embodiment, it is possible to further reduce the size of the intake device 2 while suppressing deterioration of the intake air cooling performance.

  In the present embodiment, since the passage cover 133 is provided with a plurality of (two) bulging portions 133a, the contact area of the intake air and the traveling wind with respect to the passage cover 133 can be increased. Therefore, the cooling performance can be improved.

  In the present embodiment, the passage cover 133 is provided with the bulging portion 133a together with the vertical fins 133b, so that the rigidity of the passage cover 133 can be increased.

  Further, in the present embodiment, in the intake manifold 13, the downstream side cylinder part 131 and the I / C housing cylinder part 132 are integrally formed using a resin material, and therefore, the bolts for mutual attachment and the like are omitted. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced.

  Moreover, in this embodiment, since the downstream cylinder part 131 is formed from a resin material, the EGR branch pipes 133a to 133d can be easily formed.

  In addition, in the intake device 12 according to the present embodiment, the effects that the intake device 2 according to the first embodiment exerts as it is with respect to portions that adopt the same configuration as the intake device 2 according to the first embodiment. Can do.

[Modification]
In the said 1st Embodiment and the said 2nd Embodiment, although the 4-cylinder diesel engine was employ | adopted as an example of the engine 1, this invention is not limited to this. The number of cylinders may be 3 cylinders or less, or 5 cylinders or more. As for the type of engine, a gasoline engine can be adopted.

  Moreover, in the said 1st Embodiment and the said 2nd Embodiment, although the opening cross-sectional shape inside the cylinder in the intake manifolds 3 and 13 was made into the substantially rectangular shape, this invention is not limited to this. For example, an oval opening cross-sectional shape as a whole can be used.

  In the first embodiment, the intake passages 31f to 31i in the downstream cylindrical portion 31 are partitioned by the partition walls 31j to 31l. However, the present invention is not limited to this. For example, in the downstream side cylinder part 31, it can also be set as the structure which one part connected between the intake passages 31f-31i.

  Moreover, in the said 1st Embodiment, although the downstream cylinder part 31 and the I / C accommodation cylinder part 32 employ | adopted the structure fixed with the fastening member in the state which faced each other opening edge. However, the present invention is not limited to this. For example, you may comprise so that at least one part of the baseplate part of a downstream cylinder part may overlap with the baseplate part of an I / C accommodation cylinder part.

  Moreover, in the said 1st Embodiment, although the downstream cylinder part 31 was comprised from the metal material, this invention is not limited to this. For example, it is good also as comprising a downstream cylinder part from a resin material.

  In the second embodiment, the downstream side cylinder part 131 and the I / C housing cylinder part 132 are integrally formed. However, the present invention is not limited to this. Similar to the first embodiment, a separate member may be used.

  In the first embodiment, the bolts 34 to 37 are used for joining the downstream side cylinder part 31 and the I / C accommodating cylinder part 32, and for joining the I / C accommodation cylinder part 32 and the passage cover 33. Although the bolts 41 to 43 are used, the present invention is not limited to this. For example, joining may be performed using rivets.

  In the first embodiment, the two bolts 7 and 8 for attaching the intake manifold 3 to the cylinder head 1a are used. In the second embodiment, seven bolts are used. However, the present invention is not limited to this. For example, three to six bolts may be used, or eight or more bolts may be used.

  Moreover, in the said 1st Embodiment and the said 2nd Embodiment, although the metal material which comprises the channel | path covers 33 and 133 was not referred in particular, various materials are employable. For example, an aluminum alloy can be used.

  Also, various materials may be employed as the resin material constituting the I / C housing cylinder 32 in the first embodiment and the downstream cylinder 131 and the I / C housing cylinder 132 in the second embodiment. Can do. For example, a nylon resin material mixed with glass fiber can be used.

  In the first embodiment, the EGR path (EGR distribution pipe 31a and EGR branch pipes 31b to 31e) is formed integrally with the downstream side cylinder portion 31, but the present invention is limited thereto. It is not a thing. At least one of the EGR distribution pipe 31a and the EGR branch pipes 31b to 31e can be separated from the downstream side cylinder portion.

  In the second embodiment, the passage cover 133 is provided with the two bulged portions 133a. However, the present invention is not limited to this. For example, it is good also as providing one bulging part, and good also as providing three or more bulging parts. Furthermore, it is not always necessary to form the bulging portion extending in the vehicle width direction, and a plurality of dot-shaped bulging portions may be provided.

  In the first embodiment and the second embodiment, the passage covers 33 and 133 in the intake manifolds 3 and 13 are arranged on the most front side of the vehicle in the intake manifolds 3 and 13. You are not limited to this. Any location may be used as long as it is a region that receives traveling wind when the vehicle is traveling.

  Further, the location of the intake manifold with respect to the engine is not necessarily limited to the front side of the vehicle. For example, it is good also as arrange | positioning to the vehicle right side or vehicle left side, and good also as arrange | positioning to a vehicle rear side.

  Moreover, in the said 1st Embodiment and the said 2nd Embodiment, although it decided that the whole channel | path cover 33,133 was comprised from the metal material, this invention is not limited to this. It is also possible to employ a passage cover in which a part of the outer shell is made of a metal material and the remaining part is made of another material such as a resin material.

DESCRIPTION OF SYMBOLS 1 Engine 2,12 Intake device 3,13 Intake manifold 4,24 Intercooler 5 Thermal insulation member 14 EGR pipe 31,131 Downstream cylinder part 32,132 I / C accommodation cylinder part 33,133 Passage cover 33c, 133c Front intake Passage

Claims (8)

In an intake device for an engine with an intercooler that houses an intercooler and has an intake manifold attached to a cylinder head in a vehicle engine.
The intake manifold is
A cylindrical body made of a resin material, and an I / C housing cylinder portion that houses the intercooler inside the cylinder;
The front side intake passage portion Rutotomoni disposed on the front side, than the I / C containing cylinder portion in the flow direction of the intake air is arranged upstream of the vehicle than the I / C containing cylinder portion,
With
The I / C housing cylinder portion has an upstream opening that opens toward the front side of the vehicle, and the front intake passage portion and the intake passage communicate with each other at the upstream opening.
The front-side intake passage portion has an outer shell formed by a passage cover connected so as to close the upstream opening in the I / C housing cylinder portion from the front side of the vehicle, and the front-rear direction of the vehicle Extending in the direction intersecting
The passage cover is made of a metal material, and has an outer surface facing the front side of the vehicle and an inner surface facing the upstream opening side of the I / C housing cylinder portion . , Arranged in the area that receives the driving wind,
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to claim 1,
The engine has a crankshaft arranged in a direction along the width direction of the vehicle,
The intake manifold is disposed on the front side of the vehicle with respect to the engine.
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to claim 1 or 2,
The passage cover is provided in a state along the extending direction of the front intake passage portion,
In the front intake passage portion, an upstream opening in the flow direction of intake air is provided at an end in the extending direction.
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to any one of claims 1 to 3,
The passage cover has a plurality of bulging portions formed by bulging a part of the outer wall of the passage cover outward.
The plurality of bulging portions are each extended along the extending direction of the front intake passage portion in a front view from the front side of the vehicle, and are juxtaposed in the vertical direction of the vehicle,
The front intake passage portion includes an inner recess that is recessed in the front side of the vehicle corresponding to each of the plurality of bulge portions on the inner surface side of the passage cover.
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to claim 4,
On the outer surface side of the passage cover,
A trough-shaped outer recessed portion recessed in the rear side of the vehicle is provided between the bulging portions,
A fin that protrudes outward from the outer surface of the passage cover and intersects at least a part of the plurality of bulging portions is provided.
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to claim 3,
A throttle valve connected to the opening of the front intake passage and disposed on a side of the intake manifold in the width direction of the vehicle;
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to any one of claims 1 to 6 ,
The intake manifold is a cylindrical body made of a metal material, and in the flow direction of intake air, a downstream side cylinder portion arranged between the I / C housing cylinder portion and the intake port of the cylinder head, In addition,
Intake device for engines with intercooler. An intake device for an engine with an intercooler according to claim 7,
A heat insulating member disposed between the downstream side cylinder portion and the intake port of the cylinder head in the flow direction of the intake air;
The downstream cylinder portion and the heat insulating member are fastened together by a fastening member with respect to the cylinder head.
Intake device for engines with intercooler.

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