JPH09250408A - Intake pipe laying structure in intake device for internal combustion engine - Google Patents

Intake pipe laying structure in intake device for internal combustion engine

Info

Publication number
JPH09250408A
JPH09250408A JP5800896A JP5800896A JPH09250408A JP H09250408 A JPH09250408 A JP H09250408A JP 5800896 A JP5800896 A JP 5800896A JP 5800896 A JP5800896 A JP 5800896A JP H09250408 A JPH09250408 A JP H09250408A
Authority
JP
Japan
Prior art keywords
intake
intake pipe
wall
inlet
independent
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
Application number
JP5800896A
Other languages
Japanese (ja)
Inventor
Masataka Asai
正孝 浅井
Natsuhiko Katahira
奈津彦 片平
Yoshiaki Kiyono
誉晃 清野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP5800896A priority Critical patent/JPH09250408A/en
Publication of JPH09250408A publication Critical patent/JPH09250408A/en
Pending legal-status Critical Current

Links

Landscapes

  • Characterised By The Charging Evacuation (AREA)

Abstract

PROBLEM TO BE SOLVED: To uniformly supply intake air to each cylinder by improving air distributing performance to inlet port portions through intake pipes. SOLUTION: Four independent intake pipes 5, 6, 7, 8 are disposed inside a surge tank 1 constituted of upper and lower split cases 2, 3 assembled to each other, in such a manner as to correspond to respective cylinders. The surge tank 1 is provided with an inlet wall 11 having an inlet port 12 for taking air inward, an intake pipe collecting wall 17 disposed inside and downward of the inlet wall 11, and an intake pipe juxtaposing wall 13 fixed to a cylinder head. Inlet port portions 15 of the independent intake pipes 5, 6, 7, 8 are connected to the intake pipe collecting wall 17; and outlet port portions 16 thereof are connected to the intake pipe juxtaposing wall 13 in parallel to a direction A of an array of cylinders. Distances L between the inlet port 12 of the inlet wall 11 and the independent intake pipes 5, 6, 7, 8 are substantially equal to each other. Consequently, air taking-in through the inlet port 12 flows by substantially equal distance L into the inlet port portions 15.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は、内燃機関の吸気
装置において、分割ケース組付け式サージタンク内で各
気筒に対応して各吸気管を配設する構造に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an intake system for an internal combustion engine, in which a plurality of intake pipes are arranged corresponding to each cylinder in a surge tank with a split case.

【0002】[0002]

【従来の技術】特開平4ー175465号公報に示す従
来の吸気装置においては、同公報の図1及び図2に示す
ように、上下二分割式ケーシング33内に同一形状及び
大きさの各独立吸気管(空気チューブ35)が各気筒に
対応して配設されている。そして、ケーシング33の一
側に設けられた空気入口31から吸入された空気は、各
独立吸気管(空気チューブ35)の入口38に流入され
て出口40から流出するようになっている。
2. Description of the Related Art In a conventional intake device disclosed in Japanese Patent Application Laid-Open No. 4-175465, as shown in FIGS. 1 and 2 of the publication, independent upper and lower split casings 33 of the same shape and size are used. An intake pipe (air tube 35) is arranged corresponding to each cylinder. The air sucked from the air inlet 31 provided on one side of the casing 33 flows into the inlet 38 of each independent intake pipe (air tube 35) and flows out from the outlet 40.

【0003】[0003]

【発明が解決しようとする課題】しかし、前記空気入口
31から各独立吸気管(空気チューブ35)の入口38
に至るまでの距離は、それぞれ異なるので、空気分配性
が悪くなり、各気筒へ均一な吸入空気を供給することが
できない。
However, from the air inlet 31 to the inlet 38 of each independent intake pipe (air tube 35).
Since the distance to reach each cylinder is different, the air distribution becomes poor, and it is not possible to supply uniform intake air to each cylinder.

【0004】本発明は、各吸気管の配設構造を改良し
て、前記空気分配性を良くすることを目的にしている。
An object of the present invention is to improve the air distribution by improving the arrangement structure of each intake pipe.

【0005】[0005]

【課題を解決するための手段】第一発明にかかる内燃機
関の吸気装置は、複数の分割ケースを組み付けたサージ
タンク内に複数の独立吸気管を各気筒に対応して配設し
たものである。前記サージタンクには、その内部へ空気
を吸入する流入口を有する流入口壁と、この流入口壁よ
りも下流側で内部に設けた吸気管集合壁と、シリンダヘ
ッドに取着される吸気管並設壁とを備えている。この吸
気管集合壁に対し各独立吸気管の流入口部を連結すると
ともに、この吸気管集合壁から分岐した各独立吸気管の
流出口部をこの吸気管並設壁に対し気筒列方向へ並べて
連結している。特に、前記吸入空気流入口壁の流入口
と、前記吸気管集合壁に連結された各独立吸気管の流入
口部との間の距離を、各独立吸気管についてほぼ等しく
している。
An intake system for an internal combustion engine according to the first aspect of the present invention is one in which a plurality of independent intake pipes are arranged corresponding to each cylinder in a surge tank having a plurality of divided cases assembled therein. . The surge tank has an inlet wall having an inlet for sucking air into the surge tank, an intake pipe collecting wall provided inside the surge tank downstream of the inlet wall, and an intake pipe attached to the cylinder head. It has a side-by-side wall. The inlets of the independent intake pipes are connected to the intake pipe collecting wall, and the outlets of the independent intake pipes branched from the intake pipe collecting wall are arranged in the cylinder row direction with respect to the intake pipe parallel wall. It is connected. In particular, the distance between the inlet of the intake air inlet wall and the inlet of each independent intake pipe connected to the intake pipe collecting wall is made substantially equal for each independent intake pipe.

【0006】第二発明にかかる内燃機関の吸気装置は、
複数の分割ケースを組み付けたサージタンク内に複数の
吸気管を各気筒に対応して配設したものである。前記サ
ージタンクには、その内部へ空気を吸入する流入口を有
する流入口壁と、各吸気管の流出口部を気筒列方向へ並
べて連結する吸気管並設壁とを備えている。特に、前記
吸入空気流入口壁の流入口と、この流入口壁に面して集
合するそれぞれの前記各吸気管の流入口部との間の距離
を、各吸気管についてほぼ等しくしている。
An intake system for an internal combustion engine according to the second invention is
A plurality of intake pipes are arranged corresponding to each cylinder in a surge tank in which a plurality of divided cases are assembled. The surge tank includes an inlet wall having an inlet for sucking air into the surge tank, and an intake pipe side-by-side wall that connects the outlets of the intake pipes side by side in the cylinder row direction. In particular, the distance between the inlet of the intake air inlet wall and the inlet of each of the intake pipes that face the inlet wall is made substantially equal for each intake pipe.

【0007】従って、第一発明及び第二発明において
は、流入口壁の流入口から吸入された空気は、ほぼ同一
距離を流れて各吸気管の流入口部に至る。
Therefore, in the first invention and the second invention, the air sucked from the inflow port of the inflow port wall flows at substantially the same distance to reach the inflow port portion of each intake pipe.

【0008】[0008]

【発明の実施形態】DETAILED DESCRIPTION OF THE INVENTION

〔第一実施形態〕以下、本発明の第一実施形態にかかる
直列4気筒内燃機関の吸気装置を図1〜4を参照して説
明する。
[First Embodiment] An intake system for an in-line four-cylinder internal combustion engine according to a first embodiment of the present invention will be described below with reference to FIGS.

【0009】図1及び図2に示す吸気装置は、上下の分
割ケース2,3を組み付けたサージタンク1と、このサ
ージタンク1内で四本の独立吸気管5,6,7,8を各
気筒(図示せず)に対応して配設したインテークマニホ
ールド4とを備えている。
The intake device shown in FIGS. 1 and 2 includes a surge tank 1 in which upper and lower divided cases 2 and 3 are assembled, and four independent intake pipes 5, 6, 7 and 8 in the surge tank 1. An intake manifold 4 is provided corresponding to a cylinder (not shown).

【0010】(図1及び図2に示す前記サージタンク1
について)前記各分割ケース2,3は、樹脂により一体
成形されている。上側分割ケース2の下端周縁全体及び
下側分割ケース3の上端周縁全体にはそれぞれ接合フラ
ンジ9,10が突設されている。そして、この上下両接
合フランジ9,10が互いに当てがわれて振動による摩
擦熱により溶着され、上下両分割ケース2,3が一体的
に組み付けられている。
(The surge tank 1 shown in FIGS. 1 and 2)
Regarding each of the divided cases 2 and 3 is integrally formed of resin. Joint flanges 9 and 10 are provided so as to project over the entire lower edge of the upper divided case 2 and the upper edge of the lower divided case 3, respectively. The upper and lower joint flanges 9 and 10 are applied to each other and welded by frictional heat due to vibration, so that the upper and lower split cases 2 and 3 are integrally assembled.

【0011】前記サージタンク1の下側分割ケース3に
おいて、その左側には吸入空気流入口12を有する流入
口壁11が形成され、その前下側には吸入空気流出口1
4を有する吸気管並設壁13が形成されている。前記流
入口壁11はスロットルボデー(図示せず)に取着さ
れ、その流入口12がスロットルボデーの流出口(図示
せず)に連通している。前記吸気管並設壁13はシリン
ダヘッド(図示せず)に取着され、その流出口14がシ
リンダの各気筒(図示せず)に連通している。
In the lower split case 3 of the surge tank 1, an inlet wall 11 having an intake air inlet 12 is formed on the left side thereof, and an intake air outlet 1 is formed on the lower front side thereof.
An intake pipe side-by-side wall 13 having 4 is formed. The inlet wall 11 is attached to a throttle body (not shown), and the inlet 12 communicates with an outlet (not shown) of the throttle body. The intake pipe juxtaposed wall 13 is attached to a cylinder head (not shown), and an outlet port 14 thereof communicates with each cylinder (not shown) of the cylinder.

【0012】(図1及び図2に示す前記インテークマニ
ホールド4について)前記各独立吸気管5,6,7,8
は、同一内径をなすアルミ等の金属製パイプをそれぞれ
異なる形状に変形して一体成形され、その一端に流入口
部15を有しているとともに、その他端に流出口部16
を有している。
(Regarding the intake manifold 4 shown in FIGS. 1 and 2) Each of the independent intake pipes 5, 6, 7, 8
Are integrally formed by deforming metal pipes made of aluminum or the like having the same inner diameter into different shapes, and have an inlet port 15 at one end and an outlet port 16 at the other end.
have.

【0013】吸気管集合壁17は、樹脂により一体成形
され、90度間隔の円周角度で点対称位置に配設された
四個の嵌着孔18を有している。図3に示すように、各
独立吸気管5,6,7,8の流入口部15の外周に複数
の係止孔19が形成されているとともに、吸気管集合壁
17の各嵌着孔18の内周に複数の係止突起20が形成
されている。そして、この係止突起20が係止孔19に
係入された状態で、各流入口部15が各嵌着孔18に嵌
め込まれて位置固定されている。
The intake pipe collecting wall 17 is integrally molded of resin and has four fitting holes 18 which are arranged at point symmetrical positions at circumferential angles of 90 degrees. As shown in FIG. 3, a plurality of locking holes 19 are formed on the outer periphery of the inflow port portion 15 of each of the independent intake pipes 5, 6, 7, and 8, and each fitting hole 18 of the intake pipe collecting wall 17 is formed. A plurality of locking projections 20 are formed on the inner circumference of the. Then, in a state where the locking projection 20 is engaged in the locking hole 19, each inflow port portion 15 is fitted into each fitting hole 18 and fixed in position.

【0014】(前記サージタンク1内へのインテークマ
ニホールド4の配設構造について)前記下側分割ケース
3の流入口壁11よりも下流側の隣接位置でこれに面し
てサージタンク1の内部に前記吸気管集合壁17が取着
され、この吸気管集合壁17に対し連結されて分岐され
た各独立吸気管5,6,7,8が、前記下側分割ケース
3の吸気管並設壁13へ向けて延設されている。図4に
示すように、この吸気管並設壁13の各流出口14には
ガスケット21が取着されている。各独立吸気管5,
6,7,8の流出口部16は、このガスケット21内に
嵌め込まれて位置固定され、吸気管並設壁13に対し気
筒列方向Aへ並べて連結されている。各独立吸気管5,
6,7,8の外面は上下両分割ケース2,3の内面から
適切な間隔(5mm以上)だけ離れ、それらの間に断熱
空間Sが設けられている。
(Regarding the Arrangement Structure of the Intake Manifold 4 in the Surge Tank 1) At a position adjacent to the lower split case 3 on the downstream side of the inlet wall 11 and facing the inside, the surge tank 1 is provided inside. The intake pipe collecting wall 17 is attached, and the independent intake pipes 5, 6, 7 and 8 connected to the intake pipe collecting wall 17 and branched are the intake pipe juxtaposed walls of the lower split case 3. It is extended toward 13. As shown in FIG. 4, a gasket 21 is attached to each outlet 14 of the intake pipe side-by-side wall 13. Each independent intake pipe 5,
The outflow ports 16 of 6, 7, and 8 are fitted in the gasket 21, fixed in position, and connected to the intake pipe juxtaposed wall 13 side by side in the cylinder row direction A. Each independent intake pipe 5,
The outer surfaces of 6, 7 and 8 are separated from the inner surfaces of the upper and lower split cases 2 and 3 by an appropriate distance (5 mm or more), and a heat insulating space S is provided therebetween.

【0015】図2に示すように、各独立吸気管5,6,
7,8の流入口部15の開口端面15aは、吸入空気流
入口壁11の流入口12の開口端面12aに対しほぼ平
行になっているとともに、前記吸気管並設壁13の各流
出口14を結ぶ気筒列方向Aに対しほぼ垂直になってい
る。そして、吸入空気流入口壁11の流入口12と、吸
気管集合壁17に連結された各独立吸気管5,6,7,
8の流入口部15との間の吸入空間22でそれらの間の
距離Lは、各独立吸気管5,6,7,8についてほぼ等
しくなっている。さらに、各独立吸気管5,6,7,8
において流入口部15と流出口部16とを延設方向に結
ぶ長さ(管長手方向長さ)も、各独立吸気筒5,6,
7,8についてほぼ等しくなっている。
As shown in FIG. 2, each independent intake pipe 5, 6,
The open end surfaces 15a of the inflow port portions 15 of 7 and 8 are substantially parallel to the open end surface 12a of the inflow port 12 of the intake air inflow wall 11, and the outflow ports 14 of the intake pipe juxtaposed wall 13 are provided. It is almost perpendicular to the cylinder row direction A connecting the lines. Then, the individual inlet pipes 5, 6, 7, connected to the inlet 12 of the intake air inlet wall 11 and the intake pipe collecting wall 17,
In the suction space 22 between the eight inlet portions 15 and the distance L therebetween, the distances L are substantially equal for each of the independent intake pipes 5, 6, 7, and 8. Furthermore, each independent intake pipe 5, 6, 7, 8
In the above, the length connecting the inflow port 15 and the outflow port 16 in the extending direction (the length in the pipe longitudinal direction) is also the respective independent intake cylinders 5, 6,
It is almost equal for 7 and 8.

【0016】なお、前記インテークマニホールド4をサ
ージタンク1に組み付ける手順については、各独立吸気
管5,6,7,8の流出口部16を下側分割ケース3の
吸気管並設壁13に連結した後に、上下両分割ケース
2,3を前述したように溶着する。従って、サージタン
ク1をスロットルボデーやシリンダヘッド(図示せず)
に連結した最終組付け状態で、サージタンク1内は外気
から遮断される。
Regarding the procedure for assembling the intake manifold 4 to the surge tank 1, the outlet portions 16 of the individual intake pipes 5, 6, 7 and 8 are connected to the intake pipe juxtaposed wall 13 of the lower split case 3. After that, the upper and lower split cases 2 and 3 are welded as described above. Therefore, the surge tank 1 is replaced with a throttle body or a cylinder head (not shown).
In the final assembled state, the inside of the surge tank 1 is shut off from the outside air.

【0017】(このように構成された吸気装置の概略的
作用について)スロットルボデー(図示せず)から吸入
された空気は、サージタンク1で、流入口壁11の流入
口12を通って吸入空間22に供給され、そこで吸気脈
動が沈静される。そして、吸入空気は、インテークマニ
ホールド4の各独立吸気管5,6,7,8で、流入口部
15を通って流出口部16に至り、各気筒(図示せず)
に供給される。
(Regarding the schematic operation of the intake device constructed as described above) The air sucked from the throttle body (not shown) passes through the inlet 12 of the inlet wall 11 in the surge tank 1 and the intake space. Is supplied to 22, where the intake pulsation is subsided. Then, the intake air passes through the inlet port 15 to the outlet port 16 in each of the independent intake pipes 5, 6, 7, 8 of the intake manifold 4, and reaches each of the cylinders (not shown).
Is supplied to.

【0018】第一実施形態は下記(イ)〜(ハ)の特徴
(後記する他の技術的思想以外)を有する。 (イ) 前記吸入空気流入口壁11の流入口12と、こ
の流入口壁11に面して吸気管集合壁17で集合する前
記各吸気管5,6,7,8の流入口部15との間の距離
Lを、各吸気管5,6,7,8についてほぼ等しくし
た。従って、流入口壁11の流入口12から吸入空間2
2を通る吸入空気は、ほぼ同一距離Lを流れて各吸気管
5,6,7,8の流入口部15に至り、この各流入口部
15への空気分配性が良くなり、各気筒へ均一な吸入空
気を供給することができる。
The first embodiment has the following characteristics (a) to (c) (other than other technical ideas described later). (A) An inlet 12 of the intake air inlet wall 11, and an inlet portion 15 of each of the intake pipes 5, 6, 7, 8 facing the inlet wall 11 and gathered by an intake pipe collecting wall 17. The distance L between the intake pipes 5, 6, 7 and 8 is made substantially equal. Therefore, from the inlet 12 of the inlet wall 11 to the suction space 2
The intake air passing through 2 flows through almost the same distance L to reach the inlet port 15 of each intake pipe 5, 6, 7, and 8, and the air distribution to each inlet port 15 is improved, and the intake air is delivered to each cylinder. A uniform intake air can be supplied.

【0019】(ロ) サージタンク1内に各吸気管5,
6,7,8を各気筒に対応して配設したので、断熱効果
を高めて吸気温度を低下させることができる。 (ハ) 吸入空気流入口壁11よりも下流側でサージタ
ンク1の内部に設けた吸気管集合壁17により、各吸気
管5,6,7,8の流入口部15をまとめて連結した。
従って、互いに独立させた各吸気管5,6,7,8をコ
ンパクトにまとめた状態でサージタンク1の下側分割ケ
ース3に組み付け易くなる。また、各吸気管5,6,
7,8は、吸気管集合壁17への連結前状態で、互いに
独立しているので、各吸気管5,6,7,8を任意の形
状に成形し易くなる。
(B) Inside the surge tank 1, each intake pipe 5,
Since 6, 7, and 8 are arranged corresponding to each cylinder, the heat insulating effect can be enhanced and the intake air temperature can be lowered. (C) The intake pipe collecting wall 17 provided inside the surge tank 1 on the downstream side of the intake air inlet wall 11 collectively connects the intake ports 15 of the intake pipes 5, 6, 7, and 8.
Therefore, it becomes easy to assemble the intake pipes 5, 6, 7, 8 which are independent of each other into the lower split case 3 of the surge tank 1 in a compact state. Also, each intake pipe 5, 6,
Since the air intake pipes 7 and 8 are independent of each other before being connected to the intake pipe collecting wall 17, it becomes easy to form the intake pipes 5, 6, 7, and 8 into arbitrary shapes.

【0020】〔他の実施形態〕前記第一実施形態以外に
も下記(イ)〜(ニ)のように構成してもよい。 (イ) 図5に示す第二実施形態では、上側分割ケース
2の内側に形成された複数の支持突部23が各独立吸気
管5,6,7,8上に当てがわれ、各独立吸気管5,
6,7,8の流出口部16を吸気管並設壁13側へ押さ
え付けている。従って、各独立吸気管5,6,7,8が
サージタンク1内で支えられて位置固定される。
[Other Embodiments] Besides the first embodiment, the following (a) to (d) may be adopted. (A) In the second embodiment shown in FIG. 5, a plurality of support protrusions 23 formed inside the upper split case 2 are applied to the independent intake pipes 5, 6, 7, and 8 to provide the independent intake air. Tube 5,
The outlet portions 16 of 6, 7, and 8 are pressed against the side of the intake pipe side-by-side wall 13. Therefore, the independent intake pipes 5, 6, 7 and 8 are supported and fixed in position within the surge tank 1.

【0021】(ロ) 図6(a)に示す第三実施形態で
は、上側分割ケース2の内側に一体形成された複数の樹
脂製支持ブラケット24に各独立吸気管5,6,7,8
が弾性的に嵌着されている。従って、各独立吸気管5,
6,7,8がサージタンク1内で支えられて位置固定さ
れるとともに、製造誤差による位置ずれを吸収すること
ができる。また、図6(b)に示す第三実施形態の別例
では、上側分割ケース2に対し分離して別体で形成され
た複数の樹脂製支持ブラケット24が、各独立吸気管
5,6,7,8に嵌着された状態で、上下両分割ケース
2,3の振動溶着時に同時に上側分割ケース2の内側に
振動溶着される。
(B) In the third embodiment shown in FIG. 6A, each of the independent intake pipes 5, 6, 7, 8 is attached to a plurality of resin support brackets 24 integrally formed inside the upper split case 2.
Are elastically fitted. Therefore, each independent intake pipe 5,
6, 7 and 8 are supported and fixed in position in the surge tank 1, and the positional deviation due to manufacturing error can be absorbed. Further, in another example of the third embodiment shown in FIG. 6B, a plurality of resin support brackets 24 formed separately from the upper split case 2 are provided as separate independent intake pipes 5, 6, 6. When the upper and lower split cases 2 and 3 are vibration-welded in the state where they are fitted to the upper and lower split cases 2, they are simultaneously vibration-welded to the inside of the upper split case 2.

【0022】(ハ) 図7に示す第四実施形態において
は、吸入空間22を除くサージタンク1内で、各独立吸
気管5,6,7,8の外面と分割ケース2,3の内面と
の間の空間に断熱材H(樹脂発泡体)が充填されてい
る。
(C) In the fourth embodiment shown in FIG. 7, in the surge tank 1 excluding the suction space 22, the outer surfaces of the individual intake pipes 5, 6, 7, 8 and the inner surfaces of the split cases 2, 3 are separated. The space between them is filled with a heat insulating material H (resin foam).

【0023】(ニ) また、図7に示す第四実施形態に
おいては、各独立吸気管5,6,7,8の流入口部15
を吸気管集合壁17に連結しないで直接接合している。 〔他の技術的思想〕各実施形態から把握できる技術的思
想(請求項以外)を効果と共に記載する。
(D) In addition, in the fourth embodiment shown in FIG. 7, the inflow port portion 15 of each of the independent intake pipes 5, 6, 7, and 8.
Is directly joined without being connected to the intake pipe collecting wall 17. [Other technical ideas] The technical ideas (other than the claims) that can be grasped from each embodiment are described together with the effects.

【0024】(イ) 請求項1において、各独立吸気管
5,6,7,8の流入口部15を連結した吸気管集合壁
17にあってこの各流入口部15の開口端面15aを吸
入空気流入口壁11の流入口12の開口端面12aに対
しほぼ平行にした。従って、各吸気管5,6,7,8の
流入口部15への空気分配性が良くなる。
(A) In claim 1, the intake pipe collecting wall 17 connecting the inlet ports 15 of the independent intake pipes 5, 6, 7 and 8 has the inlet end face 15a of each inlet port 15 sucked. The air inlet wall 11 is made substantially parallel to the opening end face 12a of the inlet 12. Therefore, the air distribution to the inflow port portion 15 of each intake pipe 5, 6, 7, 8 is improved.

【0025】(ロ) 請求項1または上記(イ)におい
て、各独立吸気管5,6,7,8の流入口部15を連結
した吸気管集合壁17にあってこの各流入口部15の開
口端面15aを気筒列方向Aに対しほぼ垂直にした。従
って、各吸気管5,6,7,8の流入口部15への空気
分配性が良くなる。
(B) In claim 1 or (a), the intake pipe collecting wall 17 connecting the inlet ports 15 of the independent intake pipes 5, 6, 7, and 8 is provided with the inlet ports 15. The opening end surface 15a was made substantially vertical to the cylinder row direction A. Therefore, the air distribution to the inflow port portion 15 of each intake pipe 5, 6, 7, 8 is improved.

【0026】(ハ) 請求項1または上記(イ)または
上記(ロ)において、各独立吸気筒5,6,7,8の流
入口部15とその流出口部16とを延設方向に結ぶ管長
手方向長さを、各独立吸気筒5,6,7,8についてほ
ぼ等しくした。従って、各吸気管5,6,7,8の流入
口部15から流入した吸入空気は、ほぼ同一距離を流れ
て各吸気管5,6,7,8の流出口部16に至り、より
一層空気分配性が良くなり、各気筒へ均一な吸入空気を
供給することができる。
(C) In claim 1, the above (a) or the above (b), the inlet port 15 and the outlet port 16 of each of the independent intake cylinders 5, 6, 7 and 8 are connected in the extending direction. The length in the pipe longitudinal direction was set to be substantially the same for each of the independent intake cylinders 5, 6, 7, and 8. Therefore, the intake air that has flowed in from the inlet portion 15 of each intake pipe 5, 6, 7, 8 reaches the outlet portion 16 of each intake pipe 5, 6, 7, 8 further by flowing over substantially the same distance. Air distribution is improved, and uniform intake air can be supplied to each cylinder.

【0027】(ニ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、サージタンク1
の各分割ケース2,3は、樹脂により成形され、互いに
溶着されている。従って、サージタンク1のコストを低
下させることができる。
(D) The surge tank 1 according to claim 1, the above (a), the above (b) or the above (c).
The divided cases 2 and 3 are molded of resin and welded to each other. Therefore, the cost of the surge tank 1 can be reduced.

【0028】(ホ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8は、金属により成形されている。従っ
て、各独立吸気管5,6,7,8を任意の形状に成形し
易くい。
(E) In Claim 1, the above (a), the above (b) or the above (c), each of the independent intake pipes 5, 6, 7 and 8 is made of metal. Therefore, it is easy to form each of the independent intake pipes 5, 6, 7, and 8 into an arbitrary shape.

【0029】(ヘ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8の流入口部15は、吸気管集合壁17に
嵌め込まれて位置固定されている。従って、吸気管集合
壁17に対する流入口部15の連結を行い易くなるとと
もに、各独立吸気管5,6,7,8の微振動を防止する
ことができる。
(F) In claim 1 or above (a) or above (b) or above (c), the inlet port portion 15 of each independent intake pipe 5, 6, 7, 8 is provided in the intake pipe collecting wall 17. It is fitted and fixed in position. Therefore, it becomes easy to connect the inflow port portion 15 to the intake pipe collecting wall 17, and it is possible to prevent minute vibrations of the independent intake pipes 5, 6, 7, and 8.

【0030】(ト) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8の流出口部16は、吸気管並設壁13に
嵌め込まれて位置固定されている。従って、吸気管並設
壁13に対する流出口部16の連結を行い易くなるとと
もに、各独立吸気管5,6,7,8の微振動を防止する
ことができる。
(G) In claim 1, the above (a), the above (b) or the above (c), the outlet port 16 of each of the independent intake pipes 5, 6, 7, 8 is provided with the intake pipe juxtaposed wall 13. It is fitted and fixed in position. Therefore, it becomes easy to connect the outlet portion 16 to the intake pipe juxtaposed wall 13, and it is possible to prevent minute vibrations of the independent intake pipes 5, 6, 7, and 8.

【0031】(チ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8は、分割ケース2,3内に設けた支持部
(支持突部23または支持ブラケット24)により支え
られて位置固定されている。従って、各独立吸気管5,
6,7,8の微振動を防止するとともに、吸気管並設壁
13や吸気管集合壁17からの離脱を防止することがで
きる。
(H) In Claim 1, the above (a), the above (b) or the above (c), each of the independent intake pipes 5, 6, 7 and 8 is a support portion provided in the divided cases 2 and 3. The position is fixed by being supported by (the support protrusion 23 or the support bracket 24). Therefore, each independent intake pipe 5,
It is possible to prevent minute vibrations of 6, 7, and 8 and to prevent the intake pipe side wall 13 and the intake pipe collecting wall 17 from being separated.

【0032】(リ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8の外面を分割ケース2,3の内面から離
してそれらの間に断熱空間Sを設けている。従って、断
熱効果を高めて吸気温度を低下させることができる。
(I) In claim 1, the above (a), the above (b) or the above (c), the outer surface of each independent intake pipe 5, 6, 7, 8 is separated from the inner surface of the divided cases 2, 3. A heat insulating space S is provided between them. Therefore, the heat insulating effect can be enhanced and the intake air temperature can be lowered.

【0033】(ヌ) 請求項1または上記(イ)または
上記(ロ)または上記(ハ)において、各独立吸気管
5,6,7,8の外面と分割ケース2,3の内面との間
の空間に断熱材Hを充填している。従って、断熱効果を
高めて吸気温度を低下させることができる。
(Nu) In claim 1 or above (a) or above (b) or above (c), between the outer surface of each independent intake pipe 5, 6, 7, 8 and the inner surface of the divided cases 2, 3. The space is filled with the heat insulating material H. Therefore, the heat insulating effect can be enhanced and the intake air temperature can be lowered.

【0034】(ル) 上記(ニ)と上記(ホ)と上記
(ヘ)と上記(ト)と上記(チ)と上記(リ)と上記
(ヌ)とのうち、任意に選択して組み合わせた構成とす
る。
(L) Any one of the above (D), the above (E), the above (F), the above (G), the above (C), the above (R), and the above (N) is selected and combined. It has a different configuration.

【0035】[0035]

【発明の効果】第一発明及び第二発明にかかる内燃機関
の吸気装置によれば、各吸気管の流入口部への空気分配
性が良くなり、各気筒へ均一な吸入空気を供給すること
ができる。また、サージタンク内に配設された各吸気管
の断熱効果を高めて吸気温度を低下させることができ
る。
According to the intake system for an internal combustion engine according to the first and second aspects of the present invention, the air distribution to the inlet portion of each intake pipe is improved, and uniform intake air is supplied to each cylinder. You can Further, the heat insulating effect of each intake pipe arranged in the surge tank can be enhanced to lower the intake temperature.

【0036】さらに、第一発明では、吸気管集合壁によ
り各吸気管の流入口部をコンパクトにまとめた状態でサ
ージタンクに容易に組み付けることができる。
Further, according to the first aspect of the present invention, the inlet port of each intake pipe can be compactly assembled by the intake pipe collecting wall and easily assembled to the surge tank.

【図面の簡単な説明】[Brief description of drawings]

【図1】 第一実施形態にかかる内燃機関の吸気装置に
おいて分割ケース組付け式サージタンクと各独立吸気管
とを示す分解正面図である。
FIG. 1 is an exploded front view showing a split case assembly type surge tank and each independent intake pipe in an intake device for an internal combustion engine according to a first embodiment.

【図2】 (a)は図1に示す内燃機関の吸気装置を組
み付けた正断面図であり、(b)は(a)のX1 ーX1
線断面図であり、(c)は(b)のX2 ーX 2 線断面図
である。
FIG. 2 (a) is an assembly diagram of an intake device for an internal combustion engine shown in FIG.
It is the right sectional view which was found, (b) is X of (a)1-X1
It is a line sectional view, (c) is X of (b).Two-X TwoLine cross section
It is.

【図3】 (a)は各独立吸気管の流入口部を吸気管集
合壁に連結した構造を示す図1の部分拡大断面図であ
り、(b)は(a)の部分拡大断面図である。
3 (a) is a partially enlarged sectional view of FIG. 1 showing a structure in which an inlet portion of each independent intake pipe is connected to an intake pipe collecting wall, and FIG. 3 (b) is a partially enlarged sectional view of (a). is there.

【図4】 各独立吸気管の流出口部を吸気管並設壁に連
結した構造を示す図1の部分拡大断面図である。
FIG. 4 is a partially enlarged cross-sectional view of FIG. 1 showing a structure in which an outlet portion of each independent intake pipe is connected to an intake pipe juxtaposed wall.

【図5】 (a)は第二実施形態にかかる内燃機関の吸
気装置を示す組付け正断面図であり、(b)は(a)の
部分拡大図である。
5A is an assembled front sectional view showing an intake device for an internal combustion engine according to a second embodiment, and FIG. 5B is a partially enlarged view of FIG. 5A.

【図6】 (a)及び(b)は第三実施形態を示す部分
拡大断面図である。
6A and 6B are partially enlarged cross-sectional views showing a third embodiment.

【図7】 (a)は第四実施形態にかかる内燃機関の吸
気装置を組み付けた正断面図であり、(b)は(a)の
1 ーY1 線断面図であり、(c)は(b)のY2 ーY
2 線断面図である。
FIG. 7 (a) is a front cross-sectional view of an intake device for an internal combustion engine according to a fourth embodiment assembled, (b) is a cross-sectional view taken along line Y 1 -Y 1 of (a), and (c). Is (b) Y 2 -Y
It is a two-wire cross section.

【符号の説明】[Explanation of symbols]

1…サージタンク、2…上側分割ケース、3…下側分割
ケース、4…インテークマニホールド、5,6,7,8
…独立吸気管、11…流入口壁、12…流入口、13…
吸気管並設壁、14…流出口、15…吸気管流入口部、
16…吸気管流出口部、17…吸気管集合壁、L…距
離、A…気筒列方向。
1 ... Surge tank, 2 ... Upper split case, 3 ... Lower split case, 4 ... Intake manifold, 5, 6, 7, 8
... Independent intake pipe, 11 ... Inlet wall, 12 ... Inlet, 13 ...
Intake pipe juxtaposed wall, 14 ... Outlet port, 15 ... Intake pipe inlet port,
16 ... Intake pipe outlet, 17 ... Intake pipe collecting wall, L ... Distance, A ... Cylinder row direction.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 複数の分割ケースを組み付けたサージタ
ンク内に複数の独立吸気管を各気筒に対応して配設した
内燃機関の吸気装置において、 前記サージタンクには、その内部へ空気を吸入する流入
口を有する流入口壁と、この流入口壁よりも下流側で内
部に設けた吸気管集合壁と、シリンダヘッドに取着され
る吸気管並設壁とを備え、この吸気管集合壁に対し各独
立吸気管の流入口部を連結するとともに、この吸気管集
合壁から分岐した各独立吸気管の流出口部をこの吸気管
並設壁に対し気筒列方向へ並べて連結し、 前記吸入空気流入口壁の流入口と、前記吸気管集合壁に
連結された各独立吸気管の流入口部との間の距離を、各
独立吸気管についてほぼ等しくしたことを特徴とする内
燃機関の吸気装置における吸気管配設構造。
1. An intake system for an internal combustion engine in which a plurality of independent intake pipes are arranged corresponding to each cylinder in a surge tank having a plurality of divided cases assembled therein, and the surge tank sucks air into the inside thereof. An inlet wall having an inlet port, an intake pipe collecting wall provided on the downstream side of the inlet wall, and an intake pipe side-by-side wall attached to the cylinder head. The intake port of each independent intake pipe is connected, and the outlet port of each independent intake pipe branched from the intake pipe collecting wall is connected to the intake pipe juxtaposed wall side by side in the cylinder row direction. Intake of an internal combustion engine, wherein the distance between the inlet of the air inlet wall and the inlet of each independent intake pipe connected to the intake pipe collecting wall is made substantially equal for each independent intake pipe. Air intake pipe arrangement structure in the device.
【請求項2】 複数の分割ケースを組み付けたサージタ
ンク内に複数の吸気管を各気筒に対応して配設した内燃
機関の吸気装置において、 前記サージタンクには、その内部へ空気を吸入する流入
口を有する流入口壁と、各吸気管の流出口部を気筒列方
向へ並べて連結する吸気管並設壁とを備え、 前記吸入空気流入口壁の流入口と、この流入口壁に面し
て集合するそれぞれの前記各吸気管の流入口部との間の
距離を、各吸気管についてほぼ等しくしたことを特徴と
する内燃機関の吸気装置における吸気管配設構造。
2. An intake system for an internal combustion engine in which a plurality of intake pipes are arranged corresponding to each cylinder in a surge tank having a plurality of divided cases assembled therein, and air is sucked into the surge tank. An inlet wall having an inlet, and an intake pipe side-by-side wall connecting and connecting outlets of the intake pipes in the cylinder row direction. An intake pipe arrangement structure in an intake device for an internal combustion engine, wherein the distances between the intake pipes of the respective intake pipes that are assembled together are substantially equal to each other.
JP5800896A 1996-03-14 1996-03-14 Intake pipe laying structure in intake device for internal combustion engine Pending JPH09250408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5800896A JPH09250408A (en) 1996-03-14 1996-03-14 Intake pipe laying structure in intake device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5800896A JPH09250408A (en) 1996-03-14 1996-03-14 Intake pipe laying structure in intake device for internal combustion engine

Publications (1)

Publication Number Publication Date
JPH09250408A true JPH09250408A (en) 1997-09-22

Family

ID=13071952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5800896A Pending JPH09250408A (en) 1996-03-14 1996-03-14 Intake pipe laying structure in intake device for internal combustion engine

Country Status (1)

Country Link
JP (1) JPH09250408A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6283078B1 (en) 1998-09-01 2001-09-04 Daihatsu Motor Co. Ltd. Inertia charge intake manifold for multi-cylinder internal combustion engine and connecting method for branch pipes of intake manifold
WO2004033883A1 (en) * 2002-10-11 2004-04-22 Ygk Co., Ltd. Narrow-angle v-type engine
FR2920487A1 (en) * 2007-09-05 2009-03-06 Renault Sas Air distributor for supercharged internal combustion engine, has plenum provided with air inlet and opening in conduits, where two conduits having different geometries such that distances separating inlet from outlets of conduits are equal
JP2011127564A (en) * 2009-12-21 2011-06-30 Daihatsu Motor Co Ltd Intake device in internal combustion engine
JP2012140892A (en) * 2010-12-28 2012-07-26 Mikuni Corp Intake manifold made of resin
DE102018201544A1 (en) * 2018-02-01 2019-08-01 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine with a suction module

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6283078B1 (en) 1998-09-01 2001-09-04 Daihatsu Motor Co. Ltd. Inertia charge intake manifold for multi-cylinder internal combustion engine and connecting method for branch pipes of intake manifold
US6371070B2 (en) 1998-09-01 2002-04-16 Daihatsu Motor Co., Ltd. Inertia charge intake manifold for multi-cylinder internal combustion engine and connecting method for branch pipes of intake manifold
WO2004033883A1 (en) * 2002-10-11 2004-04-22 Ygk Co., Ltd. Narrow-angle v-type engine
US7219632B2 (en) 2002-10-11 2007-05-22 Ygk Co., Ltd. Narrow angle V-type engine
KR100734983B1 (en) * 2002-10-11 2007-07-06 가부시키가이샤 와이지케이 Narrow-angle v-type engine
FR2920487A1 (en) * 2007-09-05 2009-03-06 Renault Sas Air distributor for supercharged internal combustion engine, has plenum provided with air inlet and opening in conduits, where two conduits having different geometries such that distances separating inlet from outlets of conduits are equal
JP2011127564A (en) * 2009-12-21 2011-06-30 Daihatsu Motor Co Ltd Intake device in internal combustion engine
JP2012140892A (en) * 2010-12-28 2012-07-26 Mikuni Corp Intake manifold made of resin
DE102018201544A1 (en) * 2018-02-01 2019-08-01 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine with a suction module

Similar Documents

Publication Publication Date Title
US7198017B2 (en) Intake noise suppressor
JP4965513B2 (en) Intake manifold
JP3585818B2 (en) Intake manifold
JP5755087B2 (en) Resin intake manifold
US20030079707A1 (en) Composite intake manifold assembly for an internal combustion engine and method for producing same
US20010022167A1 (en) Composite intake manifold assembly for an internal combustion engine and method for producing same
JPH04128567A (en) Intake device for engine
JP3428778B2 (en) Intake device for internal combustion engine
JPH09250408A (en) Intake pipe laying structure in intake device for internal combustion engine
JP5825903B2 (en) Resin intake manifold
JPH11210576A (en) Intake device for engine
JP2003161216A (en) Intake unit
KR101129975B1 (en) Intake manifold for multi-cylinder internal combustion engine
JP2001140713A (en) Intake device in multicylinder internal combustion engine
US6234131B1 (en) Composite intake manifold assembly for an internal combustion engine and method for producing same
JP3990650B2 (en) Resin intake manifold
JPH11336625A (en) Intake device for internal combustion engine
JP2004308506A (en) Resin-made intake manifold
JP2002070671A (en) Intake manifold used for multidirectional fuel injection type
US20050005888A1 (en) Composite intake manifold assembly for an internal combustion engine and method for producing same
JP3668446B2 (en) Intake device for multi-cylinder internal combustion engine
JPH11117819A (en) Resinous intake manifold
EP1264982A1 (en) Intake manifold
JP2002322953A (en) Air intake device for internal combustion engine
JP3701770B2 (en) Intake device for internal combustion engine