JP2014118926A - Intake manifold and manufacturing method of intake manifold - Google Patents

Intake manifold and manufacturing method of intake manifold Download PDF

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JP2014118926A
JP2014118926A JP2012276475A JP2012276475A JP2014118926A JP 2014118926 A JP2014118926 A JP 2014118926A JP 2012276475 A JP2012276475 A JP 2012276475A JP 2012276475 A JP2012276475 A JP 2012276475A JP 2014118926 A JP2014118926 A JP 2014118926A
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intake
egr gas
collector
passage
intake pipe
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JP6030944B2 (en
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Tomoya Ozawa
智也 小澤
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Subaru Corp
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Fuji Heavy Industries Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Abstract

PROBLEM TO BE SOLVED: To provide an intake manifold which can supply a uniform EGR gas amount of each intake port, and a manufacturing method of the intake manifold.SOLUTION: The inside of a collector 2 having an intake air take-in passage 8 and an EGR gas take-in passage 9 and the inside of each intake pipe 10 are partitioned into a main intake passage 23 and an EGR gas passage 24 having an EGR gas flow-out port 24a opened into each intake pipe 10 by a partitioning wall 20, and an EGR gas accumulated in the EGR gas passage 24 is sequentially supplied into each intake pipe 10 from the EGR gas flow-out port 24a by an ejector effect by intake air flowing in each intake pipe 10. The uniform EGR gas amount can be supplied to each intake port with a simple configuration.

Description

本発明は、エンジンの複数の吸気ポートに吸気を供給するインテークマニホールド及びインテークマニホールドの製造方法に関し、特に各吸気ポートに均一なＥＧＲガス量が供給できるインテークマニホールド及びインテークマニホールドの製造方法に関する。   The present invention relates to an intake manifold that supplies intake air to a plurality of intake ports of an engine and a method for manufacturing the intake manifold, and more particularly to an intake manifold that can supply a uniform amount of EGR gas to each intake port and a method for manufacturing the intake manifold.

従来より、エンジンの吸気装置として、エンジンの各吸気ポートに吸気を供給する複数の吸気管部の上流側にコレクタ部を備え、コレクタ部に吸気及びＥＧＲガスを導入するインテークマニホールドが知られている。   2. Description of the Related Art Conventionally, as an intake device for an engine, an intake manifold that has a collector portion upstream of a plurality of intake pipe portions that supply intake air to each intake port of the engine and introduces intake air and EGR gas into the collector portion is known. .

このインテークマニホールドの一例を図６及び図７を参照して説明する。   An example of this intake manifold will be described with reference to FIGS.

図６は水平対向型エンジンに装着されるインテークマニホールドの斜視図、図７は図６の分解斜視図である。   6 is a perspective view of an intake manifold mounted on a horizontally opposed engine, and FIG. 7 is an exploded perspective view of FIG.

インテークマニホールド１００は、樹脂製の射出成形品であり、エンジンに供給する吸気を貯留するコレクタ部１０１と、コレクタ部１０１の左右に２つずつ接続される４つの吸気管部１０２とを有する。   The intake manifold 100 is an injection-molded product made of resin, and includes a collector portion 101 that stores intake air supplied to the engine, and four intake pipe portions 102 that are connected to the left and right sides of the collector portion 101.

コレクタ部１０１は略箱形状であって、前壁部に吸気管からの吸気を取り入れる吸気取入口１０３が形成される。更に前壁部にＥＧＲガス供給管からのＥＧＲガスを取り入れるＥＧＲガス流入口１０４が形成され、ＥＧＲガス流入口１０４から取り入れたＥＧＲガスをコレクタ部１０１内の中央部に突設するパイプ１０５からコレクタ部１０１内に流出する。   The collector portion 101 has a substantially box shape, and an intake intake port 103 for taking in the intake air from the intake pipe is formed in the front wall portion. Further, an EGR gas inlet 104 for taking in the EGR gas from the EGR gas supply pipe is formed on the front wall, and the collector of the EGR gas taken in from the EGR gas inlet 104 is provided through a pipe 105 protruding from the central portion of the collector part 101. It flows into the part 101.

このインテークマニホールド１００の製造は、図７に示すように、コレクタ部１０１を上下に分割した上側部分を構成する上側コレクタ部１０１ａと各吸気管部１０２を上下に分割した上側部分を構成する各上側吸気管部１０２ａとが一体形成された上側分割体１００Ａと、コレクタ部１０１の下側部分を構成する下側コレクタ部１０１ｂと各吸気管部１０２の下側部分を構成する下側吸気管部１０２ｂとが一体形成された下側分割体１００Ｂとを備える。   As shown in FIG. 7, the intake manifold 100 is manufactured in such a manner that the upper collector part 101a constituting the upper part obtained by dividing the collector part 101 vertically and the upper parts constituting the upper parts obtained by dividing the intake pipe parts 102 vertically. The upper divided body 100A integrally formed with the intake pipe portion 102a, the lower collector portion 101b constituting the lower portion of the collector portion 101, and the lower intake pipe portion 102b constituting the lower portion of each intake pipe portion 102 And a lower divided body 100B integrally formed.

この上側分割体１００Ａの外周に形成された溶着用突条部１０６ａの先端と、下側分割体１００Ｂに上側分割体１００Ａの溶着用突条部１０６ａと対応して形成された溶着用突条部１０６ｂの先端とを一致させると共に振動溶着する。   The tip of the welding ridge 106a formed on the outer periphery of the upper divided body 100A and the welding ridge formed on the lower divided body 100B corresponding to the welding ridge 106a of the upper divided body 100A. The tip of 106b is made to coincide and vibration welding is performed.

この構成によるインテークマニホールド１００は、ＥＧＲガス流入口１０４から取り入れられてパイプ１０５からコレクタ部１０１内に流出したＥＧＲガスを、吸気取入口１０３からコレクタ部１０１内に取り入れた吸気によって各吸気管部１０２に等分配する。   The intake manifold 100 having this configuration is configured such that each intake pipe portion 102 is supplied with the EGR gas that has been taken in from the EGR gas inlet 104 and has flowed into the collector portion 101 from the pipe 105 into the collector portion 101 through the intake inlet 103. Divide equally.

また、特許文献１には、吸気通路内に円筒状の案内部材を備え、案内部材と吸気通路の内壁面とにより円環状のＥＧＲガス導入通路を形成し、ＥＧＲガス導入通路の一部分に連通を阻止する阻止手段を設けることで、吸気通路内を流れるＥＧＲガスのバラツキを抑制する吸気管構造が開示される。   Further, in Patent Document 1, a cylindrical guide member is provided in the intake passage, an annular EGR gas introduction passage is formed by the guide member and the inner wall surface of the intake passage, and communication with a part of the EGR gas introduction passage is established. An intake pipe structure is disclosed that suppresses variations in EGR gas flowing in the intake passage by providing a blocking means for blocking.

特許文献２には、複数のバンクを有するエンジンにおいて、ＥＧＲ管を上流から下流に向かって順に、ＥＧＲ弁を備えた上流分岐部、この上流分岐部を集合させる集合部、集合部を分岐して各バンクの吸気管に接続する分岐部を配し、各バンクのインテークマニホールドに均一なＥＧＲガス量の吸気を供給するエンジンの排気循環装置が開示される。   In Patent Document 2, in an engine having a plurality of banks, an EGR pipe is divided into an upstream branch portion provided with an EGR valve in order from upstream to downstream, a collection portion for collecting the upstream branch portions, and a collection portion. An engine exhaust circulation device is disclosed in which a branch portion connected to an intake pipe of each bank is arranged to supply intake air of a uniform EGR gas amount to an intake manifold of each bank.

特開２００１−３０４０４５号公報JP 2001-304045 A 実開平０５−８７２５６号公報Japanese Utility Model Publication No. 05-87256

上記図６及び図７に示すインテークマホールド１００によると、パイプ１０５からコレクタ部１０１の中央部付近に流出するＥＧＲガスが、吸気取入口１０３からコレクタ部１０１内に取り入れた吸気によって各吸気管部１０２に等分配される。   According to the intake hold 100 shown in FIGS. 6 and 7, the EGR gas flowing out from the pipe 105 to the vicinity of the central portion of the collector portion 101 is taken into each intake pipe portion by the intake air taken into the collector portion 101 from the intake port 103. 102 is equally distributed.

一方、各吸気管部１０２の管路抵抗を低減するために、図８に図７と対応する分解斜視図を示し、かつ対応する部分に同一符号を付すように各吸気管部１０２の短縮を図ることがある。この各吸気管部１０２の短縮に伴いコレクタ部１０１が左右に長大に形成されたインテークマニホールド１００にあっては、パイプ１０５からコレクタ部１０１の中央付近に流出したＥＧＲガスが、吸気取入口１０３からコレクタ部１０１内に導入される吸気流によって矢印Ｆで示すようにコレクタ部１０１の後壁部側に押し流される。そのため、吸気取入口１０３から離れた側の吸気管部１０２に、より多くのＥＧＲガスが導入されて各吸気ポートに供給されるＥＧＲガス量、即ちＥＧＲガス率にバラツキが生じる。このように各吸気ポートへ供給されるＥＧＲガス量にバラツキが生じると、ＥＧＲガスに含まれる不活性ガスによってエンジンの燃焼安定性やエミッションが悪化する要因となる。   On the other hand, in order to reduce the pipe line resistance of each intake pipe portion 102, FIG. 8 shows an exploded perspective view corresponding to FIG. 7, and shortens each intake pipe portion 102 so that the same reference numerals are given to the corresponding portions. There are things to plan. In the intake manifold 100 in which the collector part 101 is formed to be elongated from side to side in accordance with the shortening of the intake pipe parts 102, EGR gas that has flowed out from the pipe 105 to the vicinity of the center of the collector part 101 passes through the intake inlet 103. As indicated by an arrow F, the intake air flow introduced into the collector portion 101 is pushed toward the rear wall side of the collector portion 101. Therefore, the amount of EGR gas introduced into the intake pipe portion 102 on the side away from the intake port 103 and supplied to each intake port, that is, the EGR gas rate varies. When the amount of EGR gas supplied to each intake port varies as described above, the inert gas contained in the EGR gas causes the combustion stability and emission of the engine to deteriorate.

一方、特許文献１や特許文献２においても、同様に各吸気ポートに導入されるＥＧＲガス量にバラツキが生じることが懸念される。   On the other hand, in Patent Document 1 and Patent Document 2, there is a concern that variations in the amount of EGR gas introduced into each intake port similarly occur.

従って、かかる点に鑑みなされた本発明の目的は、コレクタ部が比較的大きく各吸気管部が短いインテークマニホールドにおいても各吸気ポートに均一なＥＧＲガス量が供給できるインテークマニホールド及びインテークマニホールドの製造方法を提供することにある。   Accordingly, an object of the present invention made in view of such points is an intake manifold capable of supplying a uniform amount of EGR gas to each intake port even in an intake manifold having a relatively large collector portion and a short intake pipe portion, and a method of manufacturing the intake manifold. Is to provide.

前記目的を達成する請求項１に記載のインテークマニホールドは、吸気を取り入れる吸気取入路を有するコレクタ部及び該コレクタ部に接続されて下流端がエンジンの各吸気ポートに接続される複数の吸気管部を備えたインテークマニホールドにおいて、前記コレクタ部及び各吸気管部内を前記吸気取入路に連続すると共に各吸気管部内に連続する主吸気通路と前記各吸気管部内に開口するＥＲＧガス流出口を備えたＥＧＲガス通路とに区画する隔壁と、前記ＥＧＲガス通路内にＥＧＲガスを供給するＥＧＲガス取入路とを備え、前記各吸気管部を流れる吸気のエジェクタ効果によってＥＧＲガス通路内のＥＧＲガスを前記ＥＧＲガス流出口から吸気管部内に吸込供給することを特徴とする。   The intake manifold according to claim 1, which achieves the object, includes a collector portion having an intake intake path for taking in intake air, and a plurality of intake pipes connected to the collector portion and connected at downstream ends to respective intake ports of the engine. In the intake manifold having a portion, a main intake passage that is continuous with the intake intake passage in the collector portion and each intake pipe portion and continuous in each intake pipe portion, and an ERG gas outlet that opens into each intake pipe portion are provided. EGR gas passages provided with partition walls and EGR gas intake passages for supplying EGR gas into the EGR gas passages, and EGR in the EGR gas passages due to the ejector effect of the intake air flowing through the intake pipe portions. The gas is sucked and supplied from the EGR gas outlet to the intake pipe.

これによると、コレクタ部及びコレクタ部から分岐する各吸気管部内を隔壁によって主吸気通路とＥＧＲガス流出口を備えたＥＧＲガス通路に区画し、ＥＧＲガス取入路から取り入れられてＥＧＲガス通路内に貯留されるＥＧＲガスを吸気管部を流れる吸気によるエジェクタ効果によりＥＧＲガス流出口から各吸気管部内に順次吸込供給する簡単な構成で各吸気ポートに均一なＥＧＲガス量が供給できる。   According to this, the inside of each intake pipe part branched from a collector part and a collector part is divided into an EGR gas passage provided with a main intake passage and an EGR gas outlet by a partition, and it is taken in from an EGR gas intake passage and is in an EGR gas passage. A uniform amount of EGR gas can be supplied to each intake port with a simple configuration in which the EGR gas stored in the intake pipe is sequentially sucked and supplied from the EGR gas outlet into each intake pipe due to the ejector effect of the intake air flowing through the intake pipe.

請求項２に記載の発明は、請求項１のインテークマニホールドにおいて、前記ＥＧＲガス取入路は吸気取入路の周面下部にＥＧＲガス出口が開口し、前記隔壁の端縁が前記ＥＧＲガス取入路の下部と対向して延在して前記コレクタ部及び各吸気管部内を上下に区画すると共に上側に前記主吸気通路を形成し、下側に前記ＥＧＲガス通路を形成したことを特徴とする。   According to a second aspect of the present invention, in the intake manifold of the first aspect, the EGR gas inlet passage has an EGR gas outlet opening at a lower peripheral surface of the intake air inlet passage, and an edge of the partition wall is the EGR gas inlet passage. The collector portion and each intake pipe portion are vertically divided to extend opposite to the lower portion of the intake passage, the main intake passage is formed on the upper side, and the EGR gas passage is formed on the lower side. To do.

これによると、吸気取入路からの吸気は主に主吸気通路に導入すると共に一部がＥＧＲガス通路に導入され、ＥＧＲガスは吸気の一部と共にＥＧＲガス通路に誘導されてＥＧＲガス通路にＥＧＲガスが貯留される。   According to this, the intake air from the intake intake passage is mainly introduced into the main intake passage and a part thereof is introduced into the EGR gas passage, and the EGR gas is guided to the EGR gas passage together with a part of the intake air to enter the EGR gas passage. EGR gas is stored.

請求項３に記載の発明は、請求項１または２に記載のインテークマニホールドにおいて、前記主吸気通路は、前記隔壁と前記コレクタ部による拡張形状で吸気を貯留する吸気コレクタ部を備え、前記ＥＧＲガス通路は、前記隔壁と前記コレクタによる拡張形状でＥＧＲガスを貯留するＥＧＲガスコレクタ部を備えたことを特徴とする.   According to a third aspect of the present invention, in the intake manifold according to the first or second aspect, the main intake passage includes an intake collector portion that stores intake air in an expanded shape by the partition wall and the collector portion, and the EGR gas The passage is characterized by comprising an EGR gas collector for storing EGR gas in an expanded shape by the partition and the collector.

これによると、主吸気通路の拡張形状の吸気コレクタ部に吸気が貯留されて各吸気管部に均一な吸気量が供給でき、かつ拡張形状のＥＧＲガスコレクタ部にＥＧＲガスが貯留され、ＥＧＲガス通路内に貯留されるＥＧＲガスを各吸気管部を流れる吸気によるエジェクタ効果によりＥＧＲガス流出口から各吸気管部内に順次吸込供給されて各吸気ポートに均一なＥＧＲガス量が供給できる。   According to this, intake air is stored in the expanded intake manifold portion of the main intake passage, and a uniform intake amount can be supplied to each intake pipe portion, and EGR gas is stored in the expanded EGR gas collector portion. The EGR gas stored in the passage is sequentially sucked and supplied from the EGR gas outlet to the intake pipes by the ejector effect of the intake air flowing through the intake pipes, so that a uniform amount of EGR gas can be supplied to the intake ports.

請求項４に記載の発明は、請求項１〜３のいずれか１項に記載のインテークマニホールドにおいて、前記ＥＧＲガス流出口は、前記隔壁の端縁と吸気管部の内周面との隙間によって形成されたことを特徴とする。   According to a fourth aspect of the present invention, in the intake manifold according to any one of the first to third aspects, the EGR gas outlet is formed by a gap between an edge of the partition wall and an inner peripheral surface of the intake pipe portion. It is formed.

これによると、ＥＧＲガス通路を形成する隔壁の端縁と吸気管部の内周面とによって形成される隙間による簡単な構成でＥＲＧガス流出口が形成できる。   According to this, the ERG gas outlet can be formed with a simple configuration by a gap formed by the edge of the partition wall forming the EGR gas passage and the inner peripheral surface of the intake pipe portion.

請求項５に記載の発明は、前記請求項１〜４のいずれか１項に記載のインテークマニホールドの製造方法であって、前記コレクタ部及び複数の吸気管部を有するインテークマニホールドのコレクタ部を上下に分割した上側部分を構成する上側コレクタ部及び前記吸気管部を上下に分割した上部部分を構成する上側吸気管部とが一体形成された上側分割体と、前記インテークマニホールドのコレクタ部を上下に分割した下側部分を構成する下側コレクタ部及び前記吸気管部を上下に分割した下部部分を構成する下側吸気管部とが一体形成された下側分割体と、前記コレクタ部及び吸気管部内を区分する隔壁とを備え、前記下側分割体と隔壁とを振動溶着して下側分割体内に前記ＥＧＲガス通路を形成し、該下側分割体と上側分割体とを振動溶着して前記主吸気通路を有する前記インテークマニホールドを製造することを特徴とする。   A fifth aspect of the present invention is the method of manufacturing the intake manifold according to any one of the first to fourth aspects, wherein the collector portion of the intake manifold having the collector portion and a plurality of intake pipe portions is moved up and down. An upper divided body formed integrally with an upper collector portion constituting an upper portion divided into an upper portion and an upper intake pipe portion constituting an upper portion obtained by dividing the intake pipe portion up and down; and the collector portion of the intake manifold vertically A lower divided body in which a lower collector portion constituting a divided lower portion and a lower intake pipe portion constituting a lower portion obtained by dividing the intake pipe portion in the vertical direction are integrally formed, and the collector portion and the intake pipe A partition wall that divides the inside of the section, and vibration welding the lower divided body and the partition wall to form the EGR gas passage in the lower divided body, and vibration welding the lower divided body and the upper divided body. Characterized in that to produce the intake manifold with the main intake passage Te.

これによると、コレクタ部を上下に分割した上側部分を構成する上側コレクタ部及び各吸気管部を上下に分割した上側部分を構成する上側吸気管部とが一体形成された上側分割体と、コレクタ部の下側部分を構成する下側コレクタ部及び各吸気管部の下側部分を構成する下側吸気管部が一体形成された下側分割体と、コレクタ部及び吸気管部内を区画する隔壁とを、互いに振動溶着することで容易かつ安価にコレクタ部及び各吸気管部内を隔壁によって主吸気通路とＥＧＲガス通路に区画されたインテークマニホールドが製造できる。   According to this, the upper divided body in which the upper collector part constituting the upper part obtained by dividing the collector part vertically and the upper intake pipe part constituting the upper part obtained by dividing each intake pipe part vertically, and the collector The lower collector part that constitutes the lower part of the part and the lower divided body in which the lower intake pipe part that constitutes the lower part of each intake pipe part is integrally formed, and the partition that partitions the collector part and the intake pipe part And the intake manifold can be manufactured easily and inexpensively by dividing each other into a main intake passage and an EGR gas passage by partition walls.

本発明によると、吸気取入路及びＥＧＲガス取入路を有するコレクタ部及び各吸気管部内を隔壁によって主吸気通路とＥＧＲガス通路に区画し、ＥＧＲガス通路内に貯留されるＥＧＲガスをＥＧＲガス流出口から吸気管部を流れる吸気によるエジェクタ効果により各吸気管部内に順次吸込供給する簡単な構成で各吸気ポートに均一なＥＧＲガス量が供給できる。   According to the present invention, the collector portion having the intake intake passage and the EGR gas intake passage and the inside of each intake pipe portion are partitioned by the partition into the main intake passage and the EGR gas passage, and the EGR gas stored in the EGR gas passage is EGR gas. A uniform amount of EGR gas can be supplied to each intake port with a simple configuration in which suction is sequentially supplied into each intake pipe portion by an ejector effect caused by intake air flowing through the intake pipe portion from the gas outlet.

また、コレクタ部を上下に分割した上側部分を構成する上側コレクタ部及び各吸気管部を上下に分割した上側部分を構成する上側吸気管部とが一体形成された上側分割体と、コレクタ部の下側部分を構成する下側コレクタ部及び各吸気管部の下側部分を構成する下側吸気管部が一体形成された下側分割体と、コレクタ部及び吸気管部内を区画する隔壁とを互いに振動溶着することで容易かつ安価にインテークマニホールドが製造できる。   In addition, an upper divided body in which an upper collector portion that constitutes an upper portion obtained by dividing the collector portion vertically and an upper intake pipe portion that constitutes an upper portion obtained by dividing each intake pipe portion vertically are integrally formed; The lower collector part that constitutes the lower part and the lower divided body in which the lower intake pipe part that constitutes the lower part of each intake pipe part is integrally formed, and the partition that partitions the collector part and the intake pipe part An intake manifold can be manufactured easily and inexpensively by vibration welding to each other.

実施の形態におけるインテークマニホールドの斜視図である。It is a perspective view of the intake manifold in an embodiment. 図1のＩＩ−ＩＩ線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 図1の分解斜視図である。FIG. 2 is an exploded perspective view of FIG. 図１のＩＶ部拡大図である。It is the IV section enlarged view of FIG. 隔壁の他の例を示す斜視図である。It is a perspective view which shows the other example of a partition. 従来のインテークマニホールドの斜視図である。It is a perspective view of the conventional intake manifold. 図６の分解斜視図である。FIG. 7 is an exploded perspective view of FIG. 6. 他のインテークマニホールドの分解斜視図である。It is a disassembled perspective view of another intake manifold.

以下、本発明の一実施の形態を図１乃至図４を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

図1は、水平対向型エンジンに装着されるインテークマニホールドの斜視図、図２は図1のＩＩ―ＩＩ線断面図、図３は図1の分解斜視図、図4は図１のＩＶ部拡大図である。   1 is a perspective view of an intake manifold mounted on a horizontally opposed engine, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is an exploded perspective view of FIG. 1, and FIG. FIG.

インテークマニホールド１は、樹脂製の射出成形品であり、略箱形状のコレクタ部２と、コレクタ部２の左右に接続され、下流端がエンジンの各吸気ポートに接続される４つの吸気管部１０とを有する。   The intake manifold 1 is an injection-molded product made of resin, and is connected to the left and right sides of the substantially box-shaped collector part 2 and the collector part 2, and the four intake pipe parts 10 whose downstream ends are connected to the intake ports of the engine. And have.

コレクタ部２は前壁部３、後壁部４、底壁部５及び上壁部６を有する左右方向に長い箱形状である。この前壁部３の左右方向となる幅方向中央に前方に突出する吸気取入部７を有し、吸気取入部７の中央部にスロットル弁３１を備えたスロットルボデー等の吸気管３０（図２に仮想線で示す）からの吸気を取入れる吸気取入口８ａが開口してコレクタ部２内に連通する吸気取入路８が形成される。   The collector portion 2 has a box shape that is long in the left-right direction and includes a front wall portion 3, a rear wall portion 4, a bottom wall portion 5, and an upper wall portion 6. An intake pipe 30 such as a throttle body having an intake intake portion 7 protruding forward at the center in the width direction which is the left-right direction of the front wall portion 3 and having a throttle valve 31 at the center portion of the intake intake portion 7 (FIG. 2). An intake air intake path 8 for taking in intake air from (indicated by phantom lines) is opened to form an intake air intake path 8 communicating with the collector portion 2.

吸気取入部７の下側に図示しないＥＧＲガス供給路からのＥＧＲガスを取入れるＥＧＲガス取入口９ａが開口し、かつ吸気取入路８の周面下部にＥＧＲガス出口９ｂが開口するＥＧＲガス取入路９が形成される。   An EGR gas in which an EGR gas inlet 9 a for taking in EGR gas from an EGR gas supply passage (not shown) is opened below the intake intake portion 7 and an EGR gas outlet 9 b is opened in a lower peripheral surface of the intake intake passage 8. An intake path 9 is formed.

コレクタ部２の右側及び左側に２ずつ吸気管部１０が接続される。各吸気管部１０は前壁１１、底壁１２、上壁１３及び後壁１４による内周面を有する筒状で下方に湾曲し、下流端周縁に外方に突出する取付フランジ部１５が形成される。この取付フランジ部１５には貫通孔１５ａが形成されており、貫通孔１５ａに締結ボルトを挿通してエンジンに螺合することでインテークマニホールド１が図示しないエンジンに結合固定される。   Two intake pipe sections 10 are connected to the right side and the left side of the collector section 2. Each intake pipe portion 10 has a cylindrical shape having an inner peripheral surface formed by a front wall 11, a bottom wall 12, an upper wall 13, and a rear wall 14, is curved downward, and a mounting flange portion 15 that protrudes outward is formed on the peripheral edge of the downstream end. Is done. A through hole 15a is formed in the mounting flange portion 15, and the intake manifold 1 is coupled and fixed to an engine (not shown) by inserting a fastening bolt into the through hole 15a and screwing it into the engine.

インテークマニホールド１の製造方法の概要を図３を参照して説明する。インテークマニホールド１を上下に分割した上側部分を構成する上側分割体１Ａと、下側部分を構成する下側分割体１Ｂと、下側分割体１Ｂ内を上下に区画して上側に主吸気通路２３を形成し、下側にＥＧＲガス通路２４を形成する隔壁２０とにより一体に形成される。   The outline of the manufacturing method of the intake manifold 1 will be described with reference to FIG. An upper divided body 1A that constitutes an upper part obtained by dividing the intake manifold 1 vertically, a lower divided body 1B that constitutes a lower part, and a lower divided body 1B that is divided vertically into a main intake passage 23 on the upper side. Are formed integrally with the partition wall 20 which forms the EGR gas passage 24 on the lower side.

上側分割体１Ａは、コレクタ部２を上下に分割した上側部分を構成する上側前壁部３ａ、上壁部６及び上側後壁部４ａを有する上側コレクタ部２ａと、各吸気管部１０を上下に分割した上側部分を構成する上側前壁１１ａ、上側上壁１３ａ及び上側後壁１４ａを有する上側吸気管部１０ａとが一体形成され、外周に上側溶着用突条部１６ａが形成される。   The upper divided body 1A includes an upper collector portion 2a having an upper front wall portion 3a, an upper wall portion 6 and an upper rear wall portion 4a constituting an upper portion obtained by dividing the collector portion 2 in the vertical direction, and each intake pipe portion 10 being vertically moved. The upper intake wall 10a having the upper front wall 11a, the upper upper wall 13a, and the upper rear wall 14a constituting the upper part divided into the upper part is integrally formed, and the upper welding protrusion 16a is formed on the outer periphery.

下側分割体１Ｂは、コレクタ部２を上下に分割した下側部分を構成する吸気取入部７を含む下側前壁部３ｂ、底壁部６及び下側後壁部４ｂを有する下側コレクタ部２ｂと、各吸気管部１０を上下に分割した下側部分を構成する下側前壁１１ｂ、底壁１２、下側後壁１４ｂ及び下側上壁１３ｂを有する下側吸気管部１０ｂとが一体形成され、下側吸気管部１０ｂの先端に取付フランジ部１５が形成される。また、上側分割体１Ａの上側溶着用突状部１６ａに対応して環状の下側溶着用突条部１６ｂが形成される。   The lower divided body 1B is a lower collector having a lower front wall portion 3b, a bottom wall portion 6 and a lower rear wall portion 4b including an intake intake portion 7 constituting a lower portion obtained by dividing the collector portion 2 into upper and lower portions. A lower intake pipe portion 10b having a lower front wall 11b, a bottom wall 12, a lower rear wall 14b, and a lower upper wall 13b constituting a lower portion obtained by dividing the intake pipe portion 10 into upper and lower portions, and a portion 2b. Are integrally formed, and a mounting flange portion 15 is formed at the tip of the lower intake pipe portion 10b. An annular lower welding protrusion 16b is formed corresponding to the upper welding protrusion 16a of the upper divided body 1A.

更に、下側分割体１Ｂの下側コレクタ部２Ｂの吸気取入路８の周面下部より上方において下側前壁部３ｂから下側吸気管部１０ｂの下側前壁１１ｂに亘って底壁部６及び底壁１２に沿って延在して外方端が下方に湾曲する溶着用突部１７ａが突出形成される。同様に下側コレクタ部２ｂの下側後壁部４ｂから下側吸気管部１０ｂの下側後壁１４ｂに亘って底壁部６及び底壁１２に沿って延在して外方端が下方に湾曲する溶着用突部１７ｂが突出形成される。   Further, the bottom wall extends from the lower front wall portion 3b to the lower front wall 11b of the lower intake pipe portion 10b above the lower peripheral surface of the intake intake passage 8 of the lower collector portion 2B of the lower divided body 1B. A welding projection 17a extending along the portion 6 and the bottom wall 12 and having an outer end curved downward is formed to project. Similarly, it extends along the bottom wall portion 6 and the bottom wall 12 from the lower rear wall portion 4b of the lower collector portion 2b to the lower rear wall 14b of the lower intake pipe portion 10b, and the outer end is downward. A welding protrusion 17b that curves in a protruding manner is formed.

更に、各下側吸気管部１０ｂの底壁１２の内周面に、溶着用突部１７ａ及び１７ｂの先端間に対応して吸気管部１０の内側に突出して前後に延在する段部１８が形成される。   Further, on the inner peripheral surface of the bottom wall 12 of each lower intake pipe portion 10b, a step portion 18 that protrudes inward of the intake pipe portion 10 and extends in the front-rear direction corresponding to the tip of the welding projections 17a and 17b. Is formed.

隔壁２０は、下側分割体１Ｂに形成された溶着用突部１７ａと１７ｂとの間に両側縁２１ａ、２１ｂが当接して掛け渡されて底壁部６及び底壁１２と間隙を介して対向した状態で下側分割体１Ｂ内に嵌挿可能な板状で、中央が吸気取入路８の下部領域に臨む高さ位置で左右両端が各下側吸気管部１０ｂに倣って分岐すると共に下方に湾曲して先端縁２２が段部１８とが隙間を介して対向する。   The partition wall 20 is spanned between the welding projections 17a and 17b formed on the lower divided body 1B with both side edges 21a and 21b being in contact with each other, and the bottom wall portion 6 and the bottom wall 12 are interposed through a gap. It is a plate-like shape that can be inserted into the lower divided body 1B in an opposed state, with the center at a height position facing the lower region of the intake intake passage 8, and the left and right ends branch off following the lower intake pipe portions 10b. At the same time, the tip edge 22 faces the stepped portion 18 through a gap.

この対向する隔壁２０の先端縁２２と段部１８との間隙によってスリット状のＥＧＲガス流出口２４ａが形成される。   A slit-shaped EGR gas outlet 24 a is formed by the gap between the tip edge 22 of the opposing partition wall 20 and the step portion 18.

このように形成された下側分割体１Ｂの溶着用突起部１７ａ及び１７ｂ上に隔壁２０の側縁２１ａ及び２１ｂを当接し、かつ各先端縁２２を下側吸気管部１０ｂの段部１８に隙間を介して対向させて隔壁２０を下側分割体１Ｂ内に位置決めすると共に、溶着用突起１７ａと隔壁２０の側縁２１ａ、及び溶着用突起１７ｂと側縁２１ｂをそれぞれ振動溶着する。   The side edges 21a and 21b of the partition wall 20 are brought into contact with the welding protrusions 17a and 17b of the lower divided body 1B formed in this way, and the respective leading edges 22 are brought into contact with the step portions 18 of the lower intake pipe portion 10b. The partition wall 20 is positioned in the lower divided body 1B so as to face each other through a gap, and the welding projection 17a and the side edge 21a of the partition wall 20, and the welding projection 17b and the side edge 21b are vibration welded respectively.

これにより下側分割体１Ｂの下側コレクタ部２ｂ及び各下側吸気管部１０ｂと隔壁２０とによって下側分割体１８の底壁部６及び底壁１２に沿ってＥＧＲガス供給口９ｂの近傍から各ＥＧＲガス流出孔２４ａに連通する扁平状で下側コレクタ部２ｂ内に拡張形状のＥＧＲガスコレクタ部２４Ａを有するＥＧＲガス通路２４が形成される。   As a result, the lower collector portion 2b of the lower divided body 1B, the lower intake pipe portions 10b, and the partition wall 20 make the vicinity of the EGR gas supply port 9b along the bottom wall 6 and the bottom wall 12 of the lower divided body 18. A flat EGR gas passage 24 having an expanded EGR gas collector portion 24A is formed in the lower collector portion 2b and communicated with each EGR gas outflow hole 24a.

この隔壁２０を取付けた後、上側分割体１Ａに形成された環状の上側溶着用突条部１６ａの先端と、下側分割体１Ｂの下側溶接用突条部１６ｂの先端とを一致させると共に振動溶着して隔壁２０と上側分割体１Ａ及び下側分割体１Ｂの隔壁２０より上方範囲によって主吸気通路２３を形成する。   After attaching the partition wall 20, the tip of the annular upper welding ridge 16a formed on the upper divided body 1A and the tip of the lower welding ridge 16b of the lower divided body 1B are aligned with each other. The main intake passage 23 is formed by the vibration welding and the range above the partition wall 20 and the partition wall 20 of the upper divided body 1A and the lower divided body 1B.

この上側分割体１Ａと下側分割体１Ｂ及び隔壁２０により構成されたインテークマニホールド１は、コレクタ部２及び各吸気管部１０内が隔壁２０によって上下区画されて吸気取入部７の吸気取入路８の近傍でコレクタ部２内に連通して下流端が各吸気管部１０に連通する主吸気路２３と、コレクタ部２の底壁部６及び各吸気管部１０の低壁１２に沿ってＥＧＲガス出口９ｂ側から各吸気管部１０内に開口する各ＥＧＲガス流出口２４ａに連通する扁平状なＥＧＲガス通路２４とが形成される。   The intake manifold 1 constituted by the upper divided body 1A, the lower divided body 1B, and the partition wall 20 is divided into upper and lower parts by the partition wall 20 in the collector portion 2 and each intake pipe portion 10, and the intake intake path of the intake intake portion 7 8 along the main intake passage 23 communicating with the inside of the collector portion 2 at the downstream end and communicating with the intake pipe portions 10 at the downstream end, along the bottom wall portion 6 of the collector portion 2 and the lower wall 12 of each intake pipe portion 10. A flat EGR gas passage 24 communicating with each EGR gas outlet 24a that opens into each intake pipe section 10 from the EGR gas outlet 9b side is formed.

この隔壁２０の中央部はその端縁２１ａが、図２及び図４に示すように正面視状態で吸気取入路８内でかつ吸気取入路８の周面下部側に偏倚した高さで吸気取入路８と対向するように設定される。   As shown in FIGS. 2 and 4, the central portion of the partition wall 20 has an edge 21 a that is offset in the intake intake path 8 and in the lower side of the peripheral surface of the intake intake path 8 when viewed from the front. It is set to face the intake intake path 8.

この主吸気通路２３はコレクタ部２と隔壁２０とによって拡張形状に形成されて吸気を貯留する吸気コレクタ部２３Ａが形成される。また、ＥＧＲガス通路２４はコレクタ部２と隔壁２０とによって拡張形状に形成されてＥＧＲガスを貯留するＥＧＲガスコレクタ部２４Ａが形成される。   The main intake passage 23 is formed in an expanded shape by the collector portion 2 and the partition wall 20 to form an intake collector portion 23A for storing intake air. Further, the EGR gas passage 24 is formed in an expanded shape by the collector portion 2 and the partition wall 20 to form an EGR gas collector portion 24A for storing EGR gas.

このようにインテークマニホールド１は、吸気取入路８を有するコレクタ部２及びコレクタ部２から分岐する各吸気管部１０内を隔壁２０によって区画して吸気取入路１０から導入される吸気を主に拡張形状の吸気コレクタ部２３Ａに貯留すると共に各吸気ポート１０に吸気を供給する主吸入通路２３と、吸気取入通路８から導入される吸気の一部及びＥＧＲガス取入路９から導入されるＥＧＲガスを拡張形状のＥＧＲガスコレクタ部２４Ａに貯留すると共にＥＧＲガス流出口２４ａから吸気管１０内に流出するＥＧＲガス通路２４が形成される。   As described above, the intake manifold 1 mainly collects the intake air introduced from the intake intake passage 10 by dividing the inside of the intake pipe portion 10 branched from the collector portion 2 having the intake intake passage 8 and the collector portion 2 by the partition wall 20. Are stored in the expanded intake collector portion 23 </ b> A and supply intake air to each intake port 10, a part of the intake air introduced from the intake air intake passage 8, and the EGR gas intake passage 9. The EGR gas passage 24 is stored in the expanded EGR gas collector 24A and flows out from the EGR gas outlet 24a into the intake pipe 10.

次にインテークマニホールド１の作用を説明する。   Next, the operation of the intake manifold 1 will be described.

このインテークマニホールド１は、吸気管３０から吸気取入路８を介してコレクタ部２内に供給される吸気は、主に隔壁２０の上側に形成され主吸入通路２３の吸気コレクタ部２３Ａに流入して吸気コレクタ部２３Ａ内に充満し、吸気コレクタ部２３Ａに貯留された吸気が均等に各吸気管部１０から各吸気ポートに順次供給される。即ち、これによると、主吸気通路２３の拡張形状の吸気コレクタ部２３Ａに吸気が貯留され、吸気コレクタ部２３Ａに貯留された吸気を順次各吸気管部１０に供給することで各吸気管部１０を介して各吸気ポートに均一な吸気量が供給できる、   In the intake manifold 1, the intake air supplied from the intake pipe 30 into the collector portion 2 via the intake intake passage 8 is formed mainly on the upper side of the partition wall 20 and flows into the intake collector portion 23 </ b> A of the main intake passage 23. Then, the intake collector portion 23A is filled, and the intake air stored in the intake collector portion 23A is evenly supplied sequentially from each intake pipe portion 10 to each intake port. That is, according to this, intake air is stored in the intake collector portion 23A of the expanded shape of the main intake passage 23, and the intake air stored in the intake collector portion 23A is sequentially supplied to each intake pipe portion 10, whereby each intake pipe portion 10 is supplied. A uniform intake amount can be supplied to each intake port via

一方、ＥＧＲガス供給路からＥＧＲガス取入路９を経由してＥＧＲガス出口９ｂから吸気取入路８の周面下部近傍に導入されるＥＧＲガスは、吸気取入路８を流れる吸気の一部と共にＥＧＲガス通路２４のＥＧＲガスコレクタ部２４Ａに誘導されてＥＧＲガスコレクタ部２４Ａ内に充満し、各吸気管部１０を流れる吸気のエジェクタ効果によって各ＥＧＲガス流出口２４ａから順次吸気管部１０内に吸い込まれて吸気管部１０に供給され、吸気管部１０を流れる吸気と共に各吸気ポートに供給される。   On the other hand, the EGR gas introduced from the EGR gas supply path through the EGR gas intake path 9 to the vicinity of the lower peripheral surface of the intake air intake path 8 from the EGR gas outlet 9 b is a part of the intake air flowing through the intake air intake path 8. And the EGR gas collector portion 24A of the EGR gas passage 24 together with the EGR gas passage 24 to fill the EGR gas collector portion 24A, and the intake pipe portions 10 sequentially from the EGR gas outlets 24a by the ejector effect of the intake air flowing through the intake pipe portions 10. The air is sucked in and supplied to the intake pipe 10, and is supplied to each intake port together with the intake air flowing through the intake pipe 10.

このように、ＥＧＲガスコレクタ部２４Ａに貯留されるＥＧＲガスが、各吸気管部１０を流れる吸気のエジェクタ効果により順次吸気管１０内に吸込供給される簡単な構成で各吸気ポートに均一なＥＧＲガス量が供給できる。   As described above, the EGR gas stored in the EGR gas collector 24A is sucked and supplied into the intake pipe 10 sequentially by the ejector effect of the intake air flowing through the intake pipe sections 10, and uniform EGR in each intake port. Gas quantity can be supplied.

従って本実施の形態によると、吸気取入路８及びＥＧＲガス取入路９を備えたコレクタ部２及びコレクタ部２から分岐する各吸気管部１０内を隔壁２０によって主吸入通路２３とＥＧＲガス通路２４に区画し、ＥＧＲガス通路２４内に貯留されるＥＧＲガスをＥＧＲガス流出口２４ａから吸気管部１０を流れる吸気よるエジェクタ効果により吸気管部１０内に供給する簡単な構成で各吸気ポートに均一なＥＧＲガス量が供給できる。   Therefore, according to the present embodiment, the main intake passage 23 and the EGR gas are separated by the partition wall 20 in the collector portion 2 having the intake intake passage 8 and the EGR gas intake passage 9 and in each intake pipe portion 10 branched from the collector portion 2. Each intake port is configured with a simple configuration that is divided into the passages 24 and supplies the EGR gas stored in the EGR gas passages 24 into the intake pipe portion 10 by the ejector effect by the intake air flowing through the intake pipe portion 10 from the EGR gas outlet 24a. A uniform amount of EGR gas can be supplied.

また、コレクタ部２を上下に分割した上側部分を構成する上側コレクタ部２ａ及び各吸気管部１０を上下に分割した上側部分を構成する上側吸気管部１０ａが一体形成され上側分割体１Ａと、コレクタ部２の下側部分を構成する下側コレクタ部２ｂ及び各吸気管部１０の下側部分を構成する下側吸気管部１０ｂが一体形成された下側分割体１Ｂと、コレクタ部２及び吸気管部１０内を区画する隔壁２０とを互いに振動溶着することで容易かつ安価にインテークマニホールド１が製造できる。   Further, an upper divided body 1A in which an upper collector section 2a that constitutes an upper portion obtained by dividing the collector section 2 up and down and an upper intake pipe section 10a that constitutes an upper portion obtained by dividing each intake pipe section 10 up and down are integrally formed; A lower divided body 1B in which a lower collector part 2b constituting a lower part of the collector part 2 and a lower intake pipe part 10b constituting a lower part of each intake pipe part 10 are integrally formed; a collector part 2; The intake manifold 1 can be manufactured easily and inexpensively by vibration welding the partition walls 20 that define the inside of the intake pipe portion 10.

なお、本発明は上記実施の形態に限定されることなく、発明の趣旨を逸脱しない範囲で種々変更可能である。例えば、上記実施の形態では隔壁２０の先端２２と段部１８とによる隙間によってＥＧＲガス流出口２４ａを形成したが、図５に示すように隔壁２０の先端２２に凹部２２ａを形成し、先端２２を段部に振動溶着して凹部２２ａと段部によってＥＧＲガス流出口２４ａを形成することもできる。   In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. For example, in the above embodiment, the EGR gas outlet 24a is formed by the gap between the tip 22 of the partition wall 20 and the stepped portion 18, but as shown in FIG. The EGR gas outlet 24a can also be formed by the recess 22a and the stepped portion.

また、上記実施の形態では水平対向型エンジンのインテークマニホールドに限定されることなく、コレクタ部及び複数の吸気管部を備えたＶ型エンジンや直列型エンジン等他の型のエンジン用インテークマニホールドに適用できる。   Further, in the above embodiment, the present invention is not limited to the intake manifold of the horizontally opposed type engine, but is applied to an intake manifold for other types of engines such as a V-type engine having a collector portion and a plurality of intake pipe portions or an in-line type engine. it can.

１ インテークマニホールド
２ コレクタ部
７ 吸気取入部
８ 吸気取入路
９ ＥＧＲガス取入路
９ａ ＥＧＲガス取入口
９ｂ ＥＧＲガス出口
１０ 吸気管部
１Ａ 上側分割体
２ａ 上側コレクタ部
１０ａ 上側吸気管部
１Ｂ 下側分割体
２ｂ 下側コレクタ部
１０ｂ 下側吸気管部
２０ 隔壁
２１ａ、２１ｂ 側縁
２２ 先端縁
２３ 主吸気通路
２３Ａ 吸気コレクタ部
２４ ＥＧＲガス通路
２４Ａ ＥＧＲガスコレクタ部
２４ａ ＥＧＲガス流出口
３０ 吸気管
３１ スロットル弁 DESCRIPTION OF SYMBOLS 1 Intake manifold 2 Collector part 7 Intake inlet part 8 Intake inlet path 9 EGR gas inlet path 9a EGR gas inlet 9b EGR gas outlet 10 Intake pipe part 1A Upper part 2a Upper collector part 10a Upper intake pipe part 1B Lower side Split body 2b Lower collector portion 10b Lower intake pipe portion 20 Partition walls 21a, 21b Side edge 22 Front edge 23 Main intake passage 23A Intake collector portion 24 EGR gas passage 24A EGR gas collector portion 24a EGR gas outlet 30 Intake pipe 31 Throttle valve

Claims (5)

吸気を取り入れる吸気取入路を有するコレクタ部及び該コレクタ部に接続されて下流端がエンジンの各吸気ポートに接続される複数の吸気管部を備えたインテークマニホールドにおいて、
前記コレクタ部及び各吸気管部内を前記吸気取入路に連続すると共に各吸気管部内に連続する主吸気通路と前記各吸気管部内に開口するＥＧＲガス流出口を備えたＥＧＲガス通路とに区画する隔壁と、
前記ＥＧＲガス通路内にＥＧＲガスを供給するＥＧＲガス取入路とを備え、
前記各吸気管部を流れる吸気のエジェクタ効果によってＥＧＲガス通路内のＥＧＲガスを前記ＥＧＲガス流出口から吸気管部内に吸込供給することを特徴とするインテークマニホールド。 In an intake manifold including a collector portion having an intake intake path for taking in intake air and a plurality of intake pipe portions connected to the collector portion and connected at downstream ends to the intake ports of the engine,
The collector section and each intake pipe section are divided into a main intake passage continuing to the intake intake section and continuing to each intake pipe section, and an EGR gas passage having an EGR gas outlet opening in each intake pipe section. A partition wall,
An EGR gas intake passage for supplying EGR gas into the EGR gas passage;
An intake manifold, wherein EGR gas in an EGR gas passage is sucked and supplied from the EGR gas outlet to the intake pipe portion by an ejector effect of intake air flowing through the intake pipe portions. 前記ＥＧＲガス取入路は吸気取入路の周面下部にＥＧＲガス出口が開口し、
前記隔壁の端縁が前記ＥＧＲガス取入路の下部と対向して延在して前記コレクタ部及び各吸気管部内を上下に区画すると共に上側に前記主吸気通路を形成し、下側に前記ＥＧＲガス通路を形成したことを特徴とする請求項１に記載のインテークマニホールド。 The EGR gas intake passage has an EGR gas outlet opening at the lower peripheral surface of the intake intake passage,
An edge of the partition wall extends opposite to a lower portion of the EGR gas intake passage to divide the collector portion and each intake pipe portion vertically and to form the main intake passage on the upper side, and to The intake manifold according to claim 1, wherein an EGR gas passage is formed. 前記主吸気通路は、前記隔壁と前記コレクタによる拡張形状で吸気を貯留する吸気コレクタ部を備え、
前記ＥＧＲガス通路は、前記隔壁と前記コレクタ部による拡張形状でＥＧＲガスを貯留するＥＧＲガスコレクタ部を備えたことを特徴とする請求項１または２に記載のインテークマニホールド。 The main intake passage includes an intake collector portion that stores intake air in an expanded shape by the partition and the collector,
3. The intake manifold according to claim 1, wherein the EGR gas passage includes an EGR gas collector portion that stores EGR gas in an expanded shape by the partition wall and the collector portion. 4. 前記ＥＧＲガス流出口は、前記隔壁の端縁と吸気管部の内周面との隙間によって形成されたことを特徴とする請求項１〜３のいずれか１項に記載のインテークマニホールド。   The intake manifold according to any one of claims 1 to 3, wherein the EGR gas outlet is formed by a gap between an end edge of the partition wall and an inner peripheral surface of the intake pipe portion. 前記請求項１〜４のいずれか１項に記載のインテークマニホールドの製造方法であって、
前記コレクタ部及び複数の吸気管部を有するインテークマニホールドのコレクタ部を上下に分割した上側部分を構成する上側コレクタ部及び前記吸気管部を上下に分割した上部部分を構成する上側吸気管部とが一体形成された上側分割体と、
前記インテークマニホールドのコレクタ部を上下に分割した下側部分を構成する下側コレクタ部及び前記吸気管部を上下に分割した下部部分を構成する下側吸気管部とが一体形成された下側分割体と、
前記コレクタ部及び吸気管部内を区分する隔壁とを備え、
前記下側分割体と隔壁とを振動溶着して下側分割体内に前記ＥＧＲガス通路を形成し、該下側分割体と上側分割体とを振動溶着して前記主吸気通路を有する前記インテークマニホールドを製造することを特徴とするインテークマニホールドの製造方法。 The method for manufacturing an intake manifold according to any one of claims 1 to 4,
An upper collector portion constituting an upper portion obtained by vertically dividing the collector portion of the intake manifold having the collector portion and a plurality of intake pipe portions, and an upper intake pipe portion constituting an upper portion obtained by dividing the intake pipe portion vertically. An upper divided body formed integrally;
A lower division in which a lower collector portion constituting a lower portion obtained by dividing the collector portion of the intake manifold in the vertical direction and a lower intake pipe portion constituting a lower portion obtained by dividing the intake pipe portion in the vertical direction are integrally formed. Body,
A partition that divides the collector part and the intake pipe part;
The intake manifold having the main intake passage by vibration welding the lower divided body and the partition wall to form the EGR gas passage in the lower divided body and vibration welding the lower divided body and the upper divided body. The manufacturing method of the intake manifold characterized by manufacturing.
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JP2016102428A (en) * 2014-11-27 2016-06-02 マツダ株式会社 Intake system for engine
JP2019002334A (en) * 2017-06-14 2019-01-10 トヨタ紡織株式会社 Intake manifold
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