JP2002195116A - Air intake duct structure for internal combustion engine - Google Patents
Air intake duct structure for internal combustion engineInfo
- Publication number
- JP2002195116A JP2002195116A JP2000398045A JP2000398045A JP2002195116A JP 2002195116 A JP2002195116 A JP 2002195116A JP 2000398045 A JP2000398045 A JP 2000398045A JP 2000398045 A JP2000398045 A JP 2000398045A JP 2002195116 A JP2002195116 A JP 2002195116A
- Authority
- JP
- Japan
- Prior art keywords
- intake duct
- air intake
- outside air
- duct
- support wall
- 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.)
- Granted
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車の内燃機
関における吸気ダクト構造、特に、吸気系最先端の外気
取り入れダクトを取り外し可能に構成した吸気ダクト構
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake duct structure for an internal combustion engine of an automobile, and more particularly, to an intake duct structure in which a leading-edge outside air intake duct of an intake system is detachable.
【０００２】[0002]
【従来の技術】例えば特開２０００−６４９１９号公報
に記載されているように、自動車用内燃機関の外気取り
入れダクトを２系統とし、その一方に開閉弁を設けて、
高速高負荷域では、この開閉弁を開状態として双方のダ
クトから外気を取り入れ、低速低負荷域では、開閉弁を
閉じることにより、一方のダクトのみから外気を取り入
れるようにした構成が知られている。このような構成の
吸気系においては、一方の外気取り入れダクトに開閉弁
が設けられることから、この一方の外気取り入れダクト
部分のみを開閉弁とともにユニット化した形で別体に成
形し、ダクト本体の先端側に接続する構成が一般的であ
る。これにより、開閉弁を含む外気取り入れダクトを、
比較的硬質の合成樹脂を用いて射出成形などにより精度
良く成形できる一方で、ダクト本体を所望の形状に低コ
ストなブロー成形により成形することが可能となる。2. Description of the Related Art As disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-64919, an outside air intake duct for an internal combustion engine for an automobile is provided with two systems, and an open / close valve is provided on one of the ducts.
In high-speed, high-load areas, this open / close valve is opened to take in outside air from both ducts, and in low-speed, low-load areas, the open / close valve is closed to take in outside air from only one duct. I have. In the intake system having such a configuration, since the open / close valve is provided in one of the outside air intake ducts, only one of the outside air intake duct portions is formed separately with the open / close valve in a unitized form, and the duct body is formed. A configuration that connects to the distal end side is common. As a result, the outside air intake duct including the on-off valve
While a relatively hard synthetic resin can be accurately molded by injection molding or the like, the duct body can be molded into a desired shape by low-cost blow molding.
【０００３】そして、別体に成形した外気取り入れダク
トは、エンジンルーム内での他の部品に対する整備性
や、リサイクル時の異種樹脂材料の分別等のために、ダ
クト本体に溶着等で完全に一体化することなく、ダクト
本体に対し取り外し可能に取り付けることが望ましい。
そのため、一般に、外気取り入れダクトの一端部をダク
ト本体に単に嵌合して接続するとともに、金属製ブラケ
ット等を利用して、ねじにより外気取り入れダクトを車
体等に固定する構成が多く採用されている。[0003] The separately formed outside air intake duct is completely integrated with the duct body by welding or the like in order to maintain the other parts in the engine room and to separate different kinds of resin materials during recycling. It is desirable to be detachably attached to the duct main body without forming the duct.
Therefore, in general, a configuration is often adopted in which one end of the outside air intake duct is simply fitted to and connected to the duct body, and the outside air intake duct is fixed to the vehicle body or the like by a screw using a metal bracket or the like. .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うにねじや金属製ブラケットを用いて外気取り入れダク
トを固定支持する構成では、部品点数が多くなるととも
に、整備時に外気取り入れダクトを脱着する際の作業性
が悪い、という問題がある。However, in such a configuration in which the outside air intake duct is fixedly supported by using screws or metal brackets, the number of parts is increased, and the work involved in attaching and detaching the outside air intake duct during maintenance is required. There is a problem that the sex is bad.
【０００５】[0005]
【課題を解決するための手段】そこで、この発明は、外
気取り入れ口を有する略円筒状の外気取り入れダクト
が、下流側のダクト本体とは別体に成形されているとと
もに、上記外気取り入れダクトの端部を上記ダクト本体
の端部に嵌合して、両者を接続してなる内燃機関の吸気
ダクト構造において、上記外気取り入れダクトの下方位
置に、車体側もしくは内燃機関本体に支持された支持壁
を、該外気取り入れダクトの軸方向に沿って設けるとと
もに、この支持壁の少なくとも一方の側面に、凸部を形
成し、上記外気取り入れダクトの下面には、上記支持壁
を両側から挟む一対の平行な起立壁からなるブラケット
部を形成し、かつこのブラケット部の少なくとも一方の
起立壁に上記凸部と係合する係止孔を設けるとともに、
外気取り入れダクトの接続端部側となるブラケット部の
一方の端部に、両起立壁の間がテーパ状に拡開した案内
部を設けたことを特徴としている。SUMMARY OF THE INVENTION Accordingly, the present invention provides a substantially cylindrical outside air intake duct having an outside air intake port, which is formed separately from a downstream duct body. In an intake duct structure of an internal combustion engine having an end fitted to an end of the duct main body and connecting both ends, a support wall supported on the vehicle body side or the internal combustion engine main body is provided below the outside air intake duct. Are provided along the axial direction of the outside air intake duct, and a projection is formed on at least one side surface of the support wall, and a pair of parallel portions sandwiching the support wall from both sides on the lower surface of the outside air intake duct. Forming a bracket portion composed of a simple upright wall, and providing at least one upright wall of the bracket portion with a locking hole for engaging with the convex portion,
At one end of a bracket part on the connection end side of the outside air intake duct, there is provided a guide part in which a space between both upright walls is expanded in a tapered shape.
【０００６】この発明をより具体化した請求項２の発明
では、上記ダクト本体がエアクリーナに接続されている
とともに、このダクト本体と一体もしくは別体に成形さ
れて同じくエアクリーナに接続された第２の外気取り入
れダクトが、上記外気取り入れダクトの下方に配置され
ており、上記支持壁は、上記第２の外気取り入れダクト
に一体に成形されている。According to a second aspect of the present invention, the duct body is connected to an air cleaner, and the second duct body is formed integrally with or separate from the duct body and is also connected to the air cleaner. An outside air intake duct is disposed below the outside air intake duct, and the support wall is formed integrally with the second outside air intake duct.
【０００７】すなわち、本発明では、外気取り入れダク
トを取り付ける際には、ブラケット部の端部の案内部を
支持壁の端縁に向かい合わせた状態としつつ、外気取り
入れダクトの端部をダクト本体の端部に挿入する。これ
により、ダクト本体の端部と外気取り入れダクト端部と
が嵌合すると同時に、ブラケット部の一対の起立壁の間
に支持壁がスライドして入り込み、かつ該支持壁の凸部
が起立壁の係止孔に係合する。これにより、外気取り入
れダクトは、上下方向に固定支持されるとともに、軸方
向にも固定支持されることになり、ダクト本体に確実に
接続された状態となる。ブラケット部は外気取り入れダ
クトの下方に位置するが、外気取り入れダクトを軸方向
に挿入することにより、支持壁はテーパ状の案内部に案
内されて進むので、面倒な位置合わせを要さずに簡単に
作業することができる。That is, according to the present invention, when the outside air intake duct is mounted, the end of the outside air intake duct is connected to the end of the duct body while the guide portion at the end of the bracket portion faces the edge of the support wall. Insert into the end. Thereby, at the same time when the end of the duct main body and the end of the outside air intake duct are fitted, the support wall slides in between the pair of upright walls of the bracket portion, and the projection of the support wall is Engage with locking holes. Thus, the outside air intake duct is fixedly supported in the up-down direction and also fixedly supported in the axial direction, so that it is securely connected to the duct body. The bracket part is located below the outside air intake duct, but by inserting the outside air intake duct in the axial direction, the support wall is guided by the tapered guide part, so it is easy without troublesome positioning Can work.
【０００８】また、外気取り入れダクトを取り外す際に
は、軸方向に強く引っ張れば、支持壁の凸部とブラケッ
ト部の係止孔との係合が外れ、引き抜くことができる。Further, when removing the outside air intake duct, if it is strongly pulled in the axial direction, the engagement between the convex portion of the support wall and the locking hole of the bracket portion is released, and the duct can be pulled out.
【０００９】特に、支持壁を第２の外気取り入れダクト
に一体に成形した請求項２の構成では、外気取り入れダ
クトが、そのブラケット部および支持壁を介して、第２
の外気取り入れダクトの上に支持される形となる。In particular, in the configuration of the second aspect, the support wall is formed integrally with the second outside air intake duct, and the outside air intake duct is connected to the second outside air intake duct via the bracket portion and the support wall.
It is supported on the outside air intake duct.
【００１０】[0010]
【発明の実施の形態】以下、この発明の好ましい実施の
形態を図面に基づいて詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.
【００１１】図１，図２は、この発明に係る内燃機関の
吸気ダクトを示し、特に、二股状に分岐したダクト本体
１の一方の通路端部に、ユニット化した略円筒状の外気
取り入れダクト２を取り付けた状態を示している。FIGS. 1 and 2 show an intake duct of an internal combustion engine according to the present invention. In particular, a unitized, substantially cylindrical outside air intake duct is provided at one passage end of a duct body 1 branched in a forked shape. 2 is shown.
【００１２】上記ダクト本体１は、図５にも示すよう
に、例えばポリプロピレン等の樹脂材料を用いて一体に
ブロー成形したものであって、上方の第１通路部３と下
方の第２通路部４とが基部５から二股状に分岐してい
る。上方の第１通路部３は、外気取り入れダクト２と接
続される接続口６を有し、かつその上面および下面に、
位置決め用の第１突起７および第２突起８が膨出形成さ
れている。上記第２突起８は、上記第１突起７よりも第
１通路部３の開口端寄りに位置している。また、下方の
第２通路部４は、第１通路部３に比較して長く延びてお
り、第２の外気取り入れダクトとして、先端に、ラッパ
状に開いた外気取り入れ口９を備えている。なお、第２
通路部４からさらに下方へ、図示せぬレゾネータに接続
される第３通路部１０が分岐している。そして、上記第
２通路部４の上面には、ユニット化した上記外気取り入
れダクト２を支持するための支持壁１１が一体に成形さ
れている。この支持壁１１は、第２通路部４の軸方向に
沿った平坦な板状をなしており、かつ第２通路部４の断
面の半径方向に沿って突出している。この支持壁１１の
上縁１１ａは、外気取り入れダクト２の所定の取付姿勢
に沿うように、僅かに傾斜している。また、この支持壁
１１の一方の側面に、楕円形状の凸部１２が形成されて
いる。なお、上記支持壁１１および凸部１２は、ダクト
本体１のブロー成形時に同時に成形されている。As shown in FIG. 5, the duct main body 1 is integrally blow-molded using a resin material such as polypropylene, for example, and includes an upper first passage portion 3 and a lower second passage portion. 4 are branched from the base 5 in a forked shape. The upper first passage portion 3 has a connection port 6 connected to the outside air intake duct 2, and has upper and lower surfaces thereof,
A first projection 7 and a second projection 8 for positioning are formed to bulge. The second protrusion 8 is located closer to the opening end of the first passage portion 3 than the first protrusion 7 is. Further, the lower second passage portion 4 extends longer than the first passage portion 3, and has a trumpet-shaped open air inlet 9 at the end as a second outside air intake duct. The second
A third passage portion 10 connected to a resonator (not shown) branches further downward from the passage portion 4. A support wall 11 for supporting the unitized outside air intake duct 2 is integrally formed on the upper surface of the second passage portion 4. The support wall 11 has a flat plate shape along the axial direction of the second passage portion 4 and protrudes along the radial direction of the cross section of the second passage portion 4. The upper edge 11a of the support wall 11 is slightly inclined so as to follow a predetermined mounting posture of the outside air intake duct 2. An elliptical projection 12 is formed on one side surface of the support wall 11. The support wall 11 and the projection 12 are formed at the same time when the duct body 1 is blow-molded.
【００１３】また、外気取り入れダクト２は、それぞれ
半円筒形をなす上半部２Ａと下半部２Ｂとに分割して成
形されており、側縁に沿って設けられた複数個の係止爪
２１によって、互いに一体に組み付けられている。上記
外気取り入れダクト２の長手方向の一端部は、外気取り
入れ口２２としてラッパ状に開口しており、かつ他端部
は、ブロー成形された上記ダクト本体１の接続口６に接
続されるように、大径部２３となっている。この外気取
り入れダクト２の内部には、図６に示すように、該ダク
ト２内の通路を開閉するバタフライバルブ型の弁体２５
が回動可能に収容されており、外気取り入れダクト２の
上面に取り付けられた負圧アクチュエータ２４によっ
て、開閉駆動される構成となっている。The outside air intake duct 2 is formed by being divided into an upper half 2A and a lower half 2B, each of which has a semi-cylindrical shape, and a plurality of locking claws provided along side edges. 21 are integrated with each other. One end in the longitudinal direction of the outside air intake duct 2 is open in a trumpet shape as an outside air intake 22, and the other end is connected to the connection port 6 of the blow-molded duct body 1. , A large diameter portion 23. As shown in FIG. 6, a butterfly valve type valve element 25 for opening and closing a passage in the duct 2 is provided inside the outside air intake duct 2.
Is rotatably accommodated, and is configured to be opened and closed by a negative pressure actuator 24 attached to the upper surface of the outside air intake duct 2.
【００１４】上記外気取り入れダクト２の上半部２Ａお
よび下半部２Ｂは、いずれもポリプロピレンを主体とし
た硬質合成樹脂によって射出成形されている。図７〜図
１０は、その下半部２Ｂのみを示したものであって、こ
れらの図に示すように、下半部２Ｂの下面に、上記支持
壁１１に連結されるブラケット部３１が一体に成形され
ている。このブラケット部３１は、上記支持壁１１を両
側から挟む一対の起立壁３２，３２からなり、一方の端
部が、案内部３３として互いにテーパ状に拡開している
とともに、他方の端部を閉じるように、ストッパ部３４
が設けられている。このブラケット部３１は、図１０に
示すように、外気取り入れダクト２の半径方向に沿って
突出している。そして、上記起立壁３２，３２には、上
記支持壁１１の凸部１２と係合し得る楕円形状の係止孔
３５が開口形成されている。なお、この実施例では、加
工の都合上、双方の起立壁３２，３２に係止孔３５が開
口しているが、凸部１２に対応する一方のみに形成して
も良いことは言うまでもない。また、図８，図７に示す
ように、下半部２Ｂの上記大径部２３に、矩形の係合部
３６が切欠形成されている。The upper half 2A and the lower half 2B of the outside air intake duct 2 are both injection-molded with a hard synthetic resin mainly composed of polypropylene. 7 to 10 show only the lower half 2B. As shown in these figures, a bracket 31 connected to the support wall 11 is integrally formed on the lower surface of the lower half 2B. It is molded into. The bracket portion 31 is composed of a pair of upright walls 32, 32 sandwiching the support wall 11 from both sides. One end portion of the bracket portion 31 is tapered and widened as a guide portion 33, and the other end portion is opened. Close the stopper part 34
Is provided. As shown in FIG. 10, the bracket portion 31 protrudes in the radial direction of the outside air intake duct 2. An elliptical engagement hole 35 is formed in each of the upright walls 32 and 32 so as to be able to engage with the projection 12 of the support wall 11. In this embodiment, the locking holes 35 are opened in both of the upright walls 32, 32 for convenience of processing, but it goes without saying that the locking holes 35 may be formed in only one corresponding to the convex portion 12. As shown in FIGS. 8 and 7, a rectangular engaging portion 36 is formed in the large-diameter portion 23 of the lower half 2B.
【００１５】上記の外気取り入れダクト２は、前述した
ように、予め、弁体２５や負圧アクチュエータ２４を含
めて、ユニットとして組み立てられており、これがダク
ト本体１に着脱可能に取り付けられる。外気取り入れダ
クト２の取付に際しては、外気取り入れダクト２の大径
部２３をダクト本体１の接続口６に真っ直ぐに向かい合
わせ、その姿勢のまま外気取り入れダクト２を軸方向に
沿って押し込んで接続口６に挿入する。このとき、外気
取り入れダクト２の下面に位置するブラケット部３１
は、その一端の案内部３３が支持壁１１の端縁に向かい
合っており、外気取り入れダクト２の挿入に伴って、支
持壁１１が両起立壁３２，３２の間に入り込んでくる。As described above, the outside air intake duct 2 is previously assembled as a unit including the valve body 25 and the negative pressure actuator 24, and is detachably attached to the duct body 1. When attaching the outside air intake duct 2, the large-diameter portion 23 of the outside air intake duct 2 is directly opposed to the connection port 6 of the duct main body 1, and the outside air intake duct 2 is pushed in the axial direction while keeping the posture, and the connection port is opened. Insert into 6. At this time, the bracket portion 31 located on the lower surface of the outside air intake duct 2
The guide portion 33 at one end thereof faces the edge of the support wall 11, and the support wall 11 enters between the upright walls 32, 32 with the insertion of the outside air intake duct 2.
【００１６】そして、外気取り入れダクト２の大径部２
３の開口端がダクト本体１の第１突起７に当接する所定
位置まで挿入されると、ダクト本体１の第２突起８が外
気取り入れダクト２下面の係合部３６に係合し、外気取
り入れダクト２とダクト本体１とが接続された状態とな
る。同時に、支持壁１１側面の凸部１２が、ブラケット
部３１の係止孔３５に係合する。これによって、外気取
り入れダクト２は、上下方向および軸方向の双方につい
て、確実に位置決めされた状態となる。しかも、一対の
起立壁３２，３２と支持壁１１とが互いに噛み合うとと
もに、支持壁１１によって下方から支えられることにな
り、ぐらついたりすることがない。The large-diameter portion 2 of the outside air intake duct 2
When the open end of the duct 3 is inserted to a predetermined position where it comes into contact with the first projection 7 of the duct main body 1, the second projection 8 of the duct main body 1 engages with the engaging portion 36 on the lower surface of the outside air intake duct 2 to take in the outside air. The duct 2 and the duct main body 1 are connected. At the same time, the protrusion 12 on the side surface of the support wall 11 engages with the locking hole 35 of the bracket 31. Thereby, the outside air intake duct 2 is reliably positioned in both the vertical direction and the axial direction. Moreover, the pair of upright walls 32, 32 and the support wall 11 mesh with each other and are supported from below by the support wall 11, so that there is no wobbling.
【００１７】また、外気取り入れダクト２を取り外す際
には、軸方向に強く引き抜けば、凸部１２と係止孔３５
との係合、ならびに、第２突起８と係合部３６との係合
が外れるので、容易に取り外すことができる。When removing the outside air intake duct 2, if the outside air intake duct 2 is pulled out strongly in the axial direction, the convex portion 12 and the locking hole 35 are removed.
And the engagement between the second protrusion 8 and the engagement portion 36 is released, so that the second projection 8 can be easily removed.
【００１８】図３は、上記のように構成された吸気ダク
ト構造の自動車のエンジンルーム内におけるレイアウト
を示している。この図の例では、内燃機関４１がいわゆ
る横置に車両に搭載されており、この内燃機関４１にダ
クト４４を介して接続されたエアクリーナ４２がバッテ
リ４３の後方に配置されている。そして、上記のダクト
本体１は、基部５が上記エアクリーナ４２に接続されて
おり、ここから車両前方へ延びて、上下２つの外気取り
入れ口９，２２が、一方のヘッドライトユニット４５の
後方で開口している。このような構成において、上方の
外気取り入れダクト２は、ヘッドライトユニット４５に
近接しているので、このヘッドライトユニット４５にお
けるランプ交換の際には、外気取り入れダクト２が作業
の邪魔となり、外気取り入れダクト２を一旦取り外す必
要がある。FIG. 3 shows a layout in the engine room of an automobile having the intake duct structure configured as described above. In the example of this figure, an internal combustion engine 41 is mounted on a vehicle in a so-called horizontal position, and an air cleaner 42 connected to the internal combustion engine 41 via a duct 44 is disposed behind a battery 43. The base body 5 of the duct body 1 is connected to the air cleaner 42, and extends forward from the air cleaner 42, and two upper and lower outside air intakes 9 and 22 are opened behind one of the headlight units 45. are doing. In such a configuration, since the upper outside air intake duct 2 is close to the headlight unit 45, when replacing the lamp in the headlight unit 45, the outside air intake duct 2 hinders the work, and It is necessary to remove the duct 2 once.
【００１９】上記実施例の構成では、このようなランプ
交換時の外気取り入れダクト２の脱着が極めて容易とな
る。特に、取付時に、外気取り入れダクト２の一端部を
ダクト本体１に差し込む操作のみで、下方のブラケット
部３１は自然に支持壁１１に係合するため、外気取り入
れダクト２下面側を覗き込んで作業する必要がない。In the configuration of the above embodiment, it is extremely easy to attach and detach the outside air intake duct 2 during such lamp replacement. In particular, at the time of mounting, only the operation of inserting one end of the outside air intake duct 2 into the duct main body 1 and the lower bracket portion 31 naturally engages with the support wall 11, so that the work is performed by looking into the bottom side of the outside air intake duct 2 No need to do.
【００２０】なお、上記実施例の構成では、ダクト本体
１として第１通路部３と第２通路部４とが一体に構成さ
れているが、２つの通路部をそれぞれ別のブロー成形品
として構成し、エアクリーナ４２に個別に接続するよう
に構成することもできる。In the structure of the above embodiment, the first passage portion 3 and the second passage portion 4 are integrally formed as the duct body 1, but the two passage portions are formed as separate blow molded products. Alternatively, it may be configured to be individually connected to the air cleaner 42.
【００２１】[0021]
【発明の効果】以上の説明で明らかなように、この発明
によれば、ユニット化された外気取り入れダクトをダク
ト本体に対し簡単に脱着することができ、エンジンルー
ム内の作業性や樹脂材料のリサイクルの上で有利とな
る。しかも、ブラケット部と支持壁との噛み合い、なら
びに凸部と係止孔との係合によって、外気取り入れダク
トを確実に固定することができ、ねじや金属製ブラケッ
ト等が不要となることから、部品点数の削減ならびに作
業効率の向上が図れる。As is apparent from the above description, according to the present invention, the unitized outside air intake duct can be easily attached to and detached from the duct body, and the workability in the engine room and the resin material can be reduced. This is advantageous for recycling. In addition, the engagement of the bracket portion with the support wall, and the engagement of the convex portion with the locking hole can securely fix the outside air intake duct, so that screws and metal brackets are not required. Reduction of points and improvement of work efficiency can be achieved.
【図１】この発明に係る吸気ダクト構造の一実施例を示
す側面図。FIG. 1 is a side view showing an embodiment of an intake duct structure according to the present invention.
【図２】同じく平面図。FIG. 2 is a plan view of the same.
【図３】エンジンルーム内でのレイアウトを示す平面
図。FIG. 3 is a plan view showing a layout in an engine room.
【図４】図１のＡ−Ａ線に沿った断面図。FIG. 4 is a sectional view taken along the line AA of FIG. 1;
【図５】ダクト本体のみの側面図。FIG. 5 is a side view of only the duct body.
【図６】外気取り入れダクトの断面図。FIG. 6 is a sectional view of an outside air intake duct.
【図７】外気取り入れダクトの下半部の斜視図。FIG. 7 is a perspective view of a lower half of an outside air intake duct.
【図８】同じく平面図。FIG. 8 is a plan view of the same.
【図９】同じく側面図。FIG. 9 is a side view of the same.
【図１０】同じく断面図。FIG. 10 is a sectional view of the same.
１…ダクト本体 ２…外気取り入れダクト １１…支持壁 １２…凸部 ３１…ブラケット部 ３３…案内部 ３５…係止孔 DESCRIPTION OF SYMBOLS 1 ... Duct main body 2 ... External air intake duct 11 ... Support wall 12 ... Convex part 31 ... Bracket part 33 ... Guide part 35 ... Locking hole
Claims (2)
取り入れダクトが、下流側のダクト本体とは別体に成形
されているとともに、上記外気取り入れダクトの端部を
上記ダクト本体の端部に嵌合して、両者を接続してなる
内燃機関の吸気ダクト構造において、 上記外気取り入れダクトの下方位置に、車体側もしくは
内燃機関本体に支持された支持壁を、該外気取り入れダ
クトの軸方向に沿って設けるとともに、この支持壁の少
なくとも一方の側面に、凸部を形成し、 上記外気取り入れダクトの下面には、上記支持壁を両側
から挟む一対の平行な起立壁からなるブラケット部を形
成し、かつこのブラケット部の少なくとも一方の起立壁
に上記凸部と係合する係止孔を設けるとともに、外気取
り入れダクトの接続端部側となるブラケット部の一方の
端部に、両起立壁の間がテーパ状に拡開した案内部を設
けたことを特徴とする内燃機関の吸気ダクト構造。A substantially cylindrical outside air intake duct having an outside air intake is formed separately from a downstream duct body, and an end of the outside air intake duct is connected to an end of the duct body. In the intake duct structure of the internal combustion engine which is fitted and connected to each other, a support wall supported on the vehicle body side or the internal combustion engine main body is provided at a position below the outside air intake duct in an axial direction of the outside air intake duct. Along with the support wall, a convex portion is formed on at least one side surface of the support wall, and a bracket portion including a pair of parallel upright walls sandwiching the support wall from both sides is formed on a lower surface of the outside air intake duct. In addition, at least one of the upright walls of the bracket portion is provided with a locking hole for engaging with the projection, and one of the bracket portions on the connection end side of the outside air intake duct is provided. Intake duct structure of the end portion, the internal combustion engine between both upright wall is characterized in that a guide portion that is expanded in a tapered shape.
れているとともに、このダクト本体と一体もしくは別体
に成形されて同じくエアクリーナに接続された第２の外
気取り入れダクトが、上記外気取り入れダクトの下方に
配置されており、上記支持壁は、上記第２の外気取り入
れダクトに一体に成形されていることを特徴とする請求
項１記載の内燃機関の吸気ダクト構造。And a second external air intake duct formed integrally with or separate from the duct main body and connected to the air cleaner. The second external air intake duct is provided below the external air intake duct. 2. The intake duct structure for an internal combustion engine according to claim 1, wherein the support wall is disposed, and the support wall is formed integrally with the second outside air intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000398045A JP4519314B2 (en) | 2000-12-27 | 2000-12-27 | Intake duct structure of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000398045A JP4519314B2 (en) | 2000-12-27 | 2000-12-27 | Intake duct structure of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002195116A true JP2002195116A (en) | 2002-07-10 |
| JP4519314B2 JP4519314B2 (en) | 2010-08-04 |
Family
ID=18863087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000398045A Expired - Fee Related JP4519314B2 (en) | 2000-12-27 | 2000-12-27 | Intake duct structure of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4519314B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008072805A1 (en) * | 2006-12-14 | 2008-06-19 | Inzi Controls Co., Ltd. | Bracket for solenoid valve |
| WO2008093207A1 (en) * | 2007-01-29 | 2008-08-07 | Toyota Jidosha Kabushiki Kaisha | Intake system for vehicle internal combustion engine |
| WO2008122868A3 (en) * | 2007-04-06 | 2008-12-04 | Bmc Srl | Filtering device for the air taken in by the engine of a vehicle provided with a partialization element |
| DE102012221998A1 (en) | 2011-12-09 | 2013-06-13 | Suzuki Motor Corporation | INTAKE SYSTEM OF A VEHICLE ENGINE INSTALLED IN THE ENGINE ROOM |
| JP2015218725A (en) * | 2014-05-19 | 2015-12-07 | 現代自動車株式会社Ｈｙｕｎｄａｉｍｏｔｏｒ Ｃｏｍｐａｎｙ | Variable intake system applied with variable valve |
| CN114687871A (en) * | 2020-12-31 | 2022-07-01 | 长城汽车股份有限公司 | Method and device for adjusting air intake mode |
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|---|---|---|---|---|
| JPH027349U (en) * | 1988-06-28 | 1990-01-18 | ||
| JP2000064919A (en) * | 1998-08-25 | 2000-03-03 | Denso Corp | Intake device |
| JP2000073868A (en) * | 1998-09-02 | 2000-03-07 | Suzuki Motor Corp | Caburettor accessory attaching structure for internal combustion engine |
-
2000
- 2000-12-27 JP JP2000398045A patent/JP4519314B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH027349U (en) * | 1988-06-28 | 1990-01-18 | ||
| JP2000064919A (en) * | 1998-08-25 | 2000-03-03 | Denso Corp | Intake device |
| JP2000073868A (en) * | 1998-09-02 | 2000-03-07 | Suzuki Motor Corp | Caburettor accessory attaching structure for internal combustion engine |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008072805A1 (en) * | 2006-12-14 | 2008-06-19 | Inzi Controls Co., Ltd. | Bracket for solenoid valve |
| WO2008093207A1 (en) * | 2007-01-29 | 2008-08-07 | Toyota Jidosha Kabushiki Kaisha | Intake system for vehicle internal combustion engine |
| CN101600867B (en) * | 2007-01-29 | 2011-12-14 | 丰田自动车株式会社 | Intake system for vehicle internal combustion engine |
| US8137425B2 (en) | 2007-01-29 | 2012-03-20 | Toyota Jidosha Kabushiki Kaisha | Intake system for vehicle internal combustion engine |
| WO2008122868A3 (en) * | 2007-04-06 | 2008-12-04 | Bmc Srl | Filtering device for the air taken in by the engine of a vehicle provided with a partialization element |
| DE102012221998A1 (en) | 2011-12-09 | 2013-06-13 | Suzuki Motor Corporation | INTAKE SYSTEM OF A VEHICLE ENGINE INSTALLED IN THE ENGINE ROOM |
| CN103161622A (en) * | 2011-12-09 | 2013-06-19 | 铃木株式会社 | Intake system of vehicle engine installed in engine compartment |
| JP2013122170A (en) * | 2011-12-09 | 2013-06-20 | Suzuki Motor Corp | Intake device of vehicular engine |
| US8590651B2 (en) | 2011-12-09 | 2013-11-26 | Suzuki Motor Corporation | Intake system of vehicle engine installed in engine compartment |
| JP2015218725A (en) * | 2014-05-19 | 2015-12-07 | 現代自動車株式会社Ｈｙｕｎｄａｉｍｏｔｏｒ Ｃｏｍｐａｎｙ | Variable intake system applied with variable valve |
| CN114687871A (en) * | 2020-12-31 | 2022-07-01 | 长城汽车股份有限公司 | Method and device for adjusting air intake mode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4519314B2 (en) | 2010-08-04 |
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