JPS62237074A - Intake air manifold - Google Patents
Intake air manifoldInfo
- Publication number
- JPS62237074A JPS62237074A JP7878586A JP7878586A JPS62237074A JP S62237074 A JPS62237074 A JP S62237074A JP 7878586 A JP7878586 A JP 7878586A JP 7878586 A JP7878586 A JP 7878586A JP S62237074 A JPS62237074 A JP S62237074A
- Authority
- JP
- Japan
- Prior art keywords
- intake manifold
- gasket
- divided
- intake air
- flow path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000009415 formwork Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は内燃機関の吸気系に供される吸気マニホールド
に関し、具体的には成形性の容易な形状とその材料の改
良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an intake manifold used in an intake system of an internal combustion engine, and specifically relates to an easily moldable shape and an improvement in its material.
（従来の技術〕
従来、アルミニウム合金゛等の高価な軽量金属で形成さ
れる吸気マニホールドは、燃費・馬力・振動等の性能追
求あるいは省スペースなど多くの要因で複雑な屈曲形状
に構成されており、特に多気筒高出力エンジンにおいて
は複雑形状を極めていた。(Conventional technology) Conventionally, intake manifolds made of expensive lightweight metals such as aluminum alloys have been configured into complex bent shapes due to many factors such as pursuing performance such as fuel efficiency, horsepower, and vibration, and saving space. , especially in multi-cylinder high-output engines, which had extremely complex shapes.
これを造形するには該屈曲流路を形成する中子とそれを
包持する大きな外型枠とを必要とし、その造形時融溶し
た材料の充填には高い熟練を要するし作業時間も短くな
い。さらに造形後に前記中子を取除く厄介な工程を残し
ている。In order to model this, a core that forms the curved flow path and a large outer mold that encases it are required, and filling the molten material during modeling requires a high degree of skill and the work time is short. do not have. Furthermore, there remains a troublesome process of removing the core after modeling.
前記の様な曲りの多い複雑な中子の形状は、それを成形
後除去するという最大難点が解消されない限り成形する
上で大きな制約を受けるのは当然であり、結果として燃
料の霧化・分配が悪い形状に妥協せざるを得ず、スムー
ズな流れを阻害し性能低下を来たす大きな欠点となって
いた。It is natural that the complex shape of the core with many bends as described above will impose major restrictions on molding unless the biggest difficulty of removing it after molding is solved, and as a result, the atomization and distribution of fuel will be affected. However, this was a major drawback, as it obstructed smooth flow and resulted in a drop in performance.
またこの形状は、成形性を重視して構成すると肉厚形状
になり易く、重量的、材料コスト的に大きな不利益を伴
なう。Moreover, if this shape is configured with emphasis on moldability, it tends to become thick, which is accompanied by large disadvantages in terms of weight and material cost.
本発明はこの様な多くの欠点を除去し、成形性が良好で
しかも吸入効率の優れた軽量の吸気マニホールドを安価
に提供することを目的としたものである。The object of the present invention is to eliminate many of these drawbacks and to provide a lightweight intake manifold with good moldability and excellent suction efficiency at a low cost.
以下、図面を参照しつつ詳述する。A detailed description will be given below with reference to the drawings.
本発明は、第２図の様な多気筒内燃機関のシリンダーヘ
ッドと気化器とを繋ぐ流路１を形成した吸気マニホール
ドＡであって、その一つの構成は、該吸気マニホールド
Ａをその流路１断面のほぼ中心部で型割りして第１図の
様に成型の容易な形状にほぼ対称形状に二分割形成し、
該分割した相対する面ａ’ａ’間に定形あるいは不定形
のガスケットＢを挾持せしめ、（ロ）図の如くボルト・
ナツト等による螺合等の通常の締着手段を用いて接合一
体化したことを特徴としている。The present invention is an intake manifold A having a flow path 1 connecting a cylinder head and a carburetor of a multi-cylinder internal combustion engine as shown in FIG. The mold is divided approximately at the center of one cross-section, and the two parts are formed into two approximately symmetrical shapes that are easy to mold as shown in Figure 1.
A regular or irregularly shaped gasket B is held between the divided opposing surfaces a'a', and (b) the bolts are inserted as shown in the figure.
It is characterized by being integrally joined using ordinary fastening means such as screwing with a nut or the like.
この吸気マニホールドＡを形成する素材は、軽量金属で
も十分造形可能であるが、本発明の特質を生かすには耐
熱性を有する合成樹脂を基材とする素材を用いることが
後述する作用を最も有効に発揮するので好ましい。The material forming this intake manifold A can be made of lightweight metal, but in order to take advantage of the characteristics of the present invention, it is best to use a material based on a heat-resistant synthetic resin to achieve the effects described below. It is preferable because it exhibits
次に本発明の別の構成は、合成樹脂で形成された吸気マ
ニホールドＡであって；前記構成と同様にその流路１断
面のほぼ中心部で二分割してほぼ対称形状に形成すると
共に該分割面ａに第１図（イ）の如くの凹状の溝２を設
け、この溝２に定形あるいは不定形のガスケットＢを挾
着した後互いの分割面ａ −ａ ／を重合させ、該密接
した分割面ａの全周あるいは局部的部分を高周波加熱・
超音波ｉ接または振動溶接等で溶接Ｏせしめて一体化し
たことを特徴としている。Next, another configuration of the present invention is an intake manifold A made of synthetic resin; similar to the configuration described above, the flow path 1 is divided into two at approximately the center of the cross section to form an approximately symmetrical shape. A concave groove 2 as shown in FIG. 1(A) is provided on the dividing surface a, and after a regular or irregularly shaped gasket B is clamped into the groove 2, the dividing surfaces a - a / are overlapped with each other, and the closely spaced The whole circumference or a local part of the divided surface a is heated with high frequency.
It is characterized by being integrated by welding by ultrasonic welding or vibration welding.
ここでのガスケットＢは、圧縮性を有し所望する形状に
予め形成された定形ガスケットＢｌか、あるいは適度の
粘度を有し装填後に硬化する液状タイプの不定形ガスケ
ットＢ２などが用いられる。The gasket B here may be a compressible regular gasket Bl pre-formed into a desired shape, or a liquid type irregular gasket B2 that has an appropriate viscosity and hardens after being loaded.
本発明は上記の様な構成によって成形性の容易さを得る
と共に優れた性能を持っ流路１を形成し得た。According to the present invention, with the above-described configuration, the flow path 1 can be formed with ease of moldability and excellent performance.
すなわち１本発明の最大の特徴は吸気マニホールドＡを
分割し、その二部材を別々に造形してこれを係合するこ
とで従来の流路１形成用中子を不要としたことであって
、第１図の様に定形あるいは不定形のガスケットＢをそ
の分割面ａに挿着してこれを実現する。In other words, the greatest feature of the present invention is that the intake manifold A is divided into two parts, which are separately formed and then engaged, thereby eliminating the need for the conventional core for forming the flow path 1. This is achieved by inserting a regular or irregularly shaped gasket B into the dividing surface a as shown in FIG.
この中子を取り去る構成は、それぞれ分割された外側形
状を有した型枠と流路１形状を有する型枠とで簡単に吸
気マニホールドＡの造形ができることを意味しており、
複雑な形状にも十分対応できる広い造形の自由度を得成
形性の効率を飛躍的に向上させ得ることに成功した。さ
らに、該吸気マニホールドＡの形状は、第２図の如く流
気状態にほとんど影響を与えない流れと同じ方向の縦割
り形状に構成されており、当然形作られる流路１におい
ては通流を妨げる横状の段差を有さないあくまで円滑な
形状を実現する。This configuration in which the core is removed means that the intake manifold A can be easily formed using a formwork having a divided outer shape and a formwork having a single flow path shape.
We succeeded in achieving a wide degree of freedom in molding that can accommodate even complex shapes, and dramatically improving moldability efficiency. Furthermore, the shape of the intake manifold A is vertically divided in the same direction as the flow, which has little effect on the air flow condition as shown in Fig. 2, and naturally blocks the flow in the formed flow path 1. Achieve a smooth shape with no horizontal steps.
（実施例〕
本発明の実施には、該分割した吸気マニホールドＡにガ
スケットＢを挾着せしめて第１図（ロ）の様にボルト等
にて一体化する成形性の有利さを求めた構成の他、第１
図（イ）で示す様に吸気マニホールドＡを合成樹脂で分
割形成しこれにガスケットＥを接着せしめた後互いの分
割面ａ・ａ′を溶接Ｃして一体化を図る構成を持ってお
り、この構成では用いられた合成樹脂の加工性の良さを
最大に生かし溶接Ｃによって接着同化せしめ強固な一体
物を造形するから、低価格で高性能を得る優れた構造と
なる。(Example) In carrying out the present invention, the gasket B is clamped onto the divided intake manifold A and integrated with bolts or the like as shown in FIG. In addition to
As shown in Figure (A), the intake manifold A is formed in sections from synthetic resin, a gasket E is adhered thereto, and then the divided surfaces a and a' are welded C to integrate the intake manifold A. In this configuration, the good workability of the synthetic resin used is utilized to the maximum, and the adhesive is assimilated by welding C to form a strong one-piece body, resulting in an excellent structure that achieves high performance at a low price.
なお、ここで施されるガスケットＢ挿入用の凹状溝２は
、断面形状で丸形・角形・あるいはこれらを組合せた形
状等ガスケットＥの材質に対応する様々な形状に設けれ
ば良いが、不定形ガスケットＢ′に限れば該不定形ガス
ケットＢ′が多少の硬化時間を要するから、硬化までシ
ール性の良好な形状が維持できる質量を該溝２によって
確保する必要がある。Note that the concave groove 2 for inserting the gasket B may be provided in various cross-sectional shapes corresponding to the material of the gasket E, such as round, square, or a combination of these shapes. As far as the regular gasket B' is concerned, since the irregular gasket B' requires some time to harden, it is necessary to ensure that the groove 2 has a mass capable of maintaining a shape with good sealing performance until hardening.
また、分割成形した吸気マニホールドＡを正確に接合さ
せるためには（図示していないが）位置決め用のノック
、インロー等を設けると作業性をさらに良好なものとし
、合成樹脂製の吸気マニホールドＡの場合前記位置決め
部を溶接Ｃして強固な一体化を図ることもできる。In addition, in order to accurately join the separately molded intake manifold A, it is recommended to provide positioning knocks, spigots, etc. (not shown) to further improve workability. In this case, the positioning portion may be welded C to achieve strong integration.
以上の説明の様に本発明は、ガスケットを用いることで
吸気マニホールドを分割成形し妥協のないスムースな形
状の流路を形成して大巾な軽量化を果し、なおかつ極め
て容易な造形性と短時間の仕上り性を得たもので、製造
コストを大きく低減せしめることに成功した画期的な吸
気マニホールドである。As explained above, the present invention uses a gasket to mold the intake manifold into parts, forming a flow path with a smooth shape without compromise, achieving significant weight reduction, and extremely easy moldability. This is an innovative intake manifold that can be completed in a short time and has succeeded in greatly reducing manufacturing costs.
第１図は本発明の吸気マニホールドを表わす断面図であ
る。第２図は吸気マニホールドの斜視図である。
Ａ・・・吸気マニホールド Ｂ・・・ガスケット Ｃ・
・・溶接
１・−・流路 ２・・・溝FIG. 1 is a sectional view showing the intake manifold of the present invention. FIG. 2 is a perspective view of the intake manifold. A...Intake manifold B...Gasket C.
・・Welding 1・−・Flow path 2・・Groove
Claims (4)
繋ぐ流路１を形成した吸気マニホールドＡにおいて；該
吸気マニホールドＡをその流路１断面のほぼ中心部で型
割り二分割してほぼ対称形状に形成し、該型割した相対
する分割面ａ・ａ′間に定形あるいは不定形のガスケッ
トＢを挾持せしめ、螺合等の通常の手段を用いて接合一
体化したことを特徴とする吸気マニホールド。(1) In the intake manifold A that forms the flow path 1 that connects the cylinder head and the carburetor of a multi-cylinder internal combustion engine; the intake manifold A is divided into two parts approximately at the center of the cross section of the flow path 1, so that the intake manifold A is almost symmetrical. An intake air intake characterized by forming a gasket B into a shape, sandwiching a regular or irregularly shaped gasket B between the opposed divided surfaces a and a', and joining and integrating the gasket B by using ordinary means such as screwing. manifold.
されたことを特徴とする特許請求の範囲第１項記載の吸
気マニホールド。(2) The intake manifold according to claim 1, wherein the intake manifold A is made of synthetic resin.
を設け、該溝３へ前記ガスケットＢを挿置したことを特
徴とする特許請求の範囲第１項記載の吸気マニホールド
。(3) A concave groove 3 in the dividing surface a of the intake manifold A
2. The intake manifold according to claim 1, wherein the gasket B is inserted into the groove 3.
て；該吸気マニホールドＡをその流路１断面のほぼ中心
部で二分割してほぼ対称形状に形成すると共に該型割り
した分割面ａに凹状の溝３を設け、該溝３に定形あるい
は不定形のガスケットＢを挾着した後互いの分割面ａ・
ａ′を密着させ、該密着した分割面ａの全周あるいは局
部的部分を溶接せしめ一体化したことを特徴とする吸気
マニホールド。(4) In the intake manifold A formed of synthetic resin; the intake manifold A is divided into two at approximately the center of the cross section of the flow path 1 to form a substantially symmetrical shape, and a concave shape is formed on the divided surface a of the mold. A groove 3 is provided, and after a regular or irregularly shaped gasket B is clamped into the groove 3, the dividing surfaces a and
An intake manifold characterized in that the parts a' are brought into close contact with each other, and the entire circumference or a local part of the parted surface a that is brought into close contact is welded and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7878586A JPS62237074A (en) | 1986-04-05 | 1986-04-05 | Intake air manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7878586A JPS62237074A (en) | 1986-04-05 | 1986-04-05 | Intake air manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62237074A true JPS62237074A (en) | 1987-10-17 |
Family
ID=13671536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7878586A Pending JPS62237074A (en) | 1986-04-05 | 1986-04-05 | Intake air manifold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62237074A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442194A (en) * | 1987-08-10 | 1989-02-14 | Matsushita Electric Ind Co Ltd | Thick film integrated circuit |
| JPH01102467U (en) * | 1987-12-26 | 1989-07-11 | ||
| JP2003097242A (en) * | 2001-09-21 | 2003-04-03 | Honda Motor Co Ltd | Intake manifold of multicylinder internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4113364Y1 (en) * | 1964-05-11 | 1966-06-24 | ||
| JPS5882059A (en) * | 1981-11-10 | 1983-05-17 | Toyota Motor Corp | Manufacture of intake manifold |
| JPS60119360A (en) * | 1983-11-30 | 1985-06-26 | Fuso Light Alloys Co Ltd | Intake menifold of engine |
-
1986
- 1986-04-05 JP JP7878586A patent/JPS62237074A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4113364Y1 (en) * | 1964-05-11 | 1966-06-24 | ||
| JPS5882059A (en) * | 1981-11-10 | 1983-05-17 | Toyota Motor Corp | Manufacture of intake manifold |
| JPS60119360A (en) * | 1983-11-30 | 1985-06-26 | Fuso Light Alloys Co Ltd | Intake menifold of engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442194A (en) * | 1987-08-10 | 1989-02-14 | Matsushita Electric Ind Co Ltd | Thick film integrated circuit |
| JPH01102467U (en) * | 1987-12-26 | 1989-07-11 | ||
| JP2003097242A (en) * | 2001-09-21 | 2003-04-03 | Honda Motor Co Ltd | Intake manifold of multicylinder internal combustion engine |
| JP4484407B2 (en) * | 2001-09-21 | 2010-06-16 | 本田技研工業株式会社 | Intake manifold for multi-cylinder internal combustion engines |
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