JP3685613B2 - Air duct - Google Patents

Air duct Download PDF

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Publication number
JP3685613B2
JP3685613B2 JP36192597A JP36192597A JP3685613B2 JP 3685613 B2 JP3685613 B2 JP 3685613B2 JP 36192597 A JP36192597 A JP 36192597A JP 36192597 A JP36192597 A JP 36192597A JP 3685613 B2 JP3685613 B2 JP 3685613B2
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JP
Japan
Prior art keywords
air
air duct
main body
pipe
vehicle
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.)
Expired - Lifetime
Application number
JP36192597A
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Japanese (ja)
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JPH11170875A (en
Inventor
隆 林原
誠治 岡田
基彦 服部
亮 有田
行博 服部
浩之 西川
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.)
Marugo Rubber Industries Ltd
Mitsubishi Motors Corp
Original Assignee
Marugo Rubber Industries Ltd
Mitsubishi Motors Corp
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Application filed by Marugo Rubber Industries Ltd, Mitsubishi Motors Corp filed Critical Marugo Rubber Industries Ltd
Priority to JP36192597A priority Critical patent/JP3685613B2/en
Publication of JPH11170875A publication Critical patent/JPH11170875A/en
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Publication of JP3685613B2 publication Critical patent/JP3685613B2/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/006Camshaft or pushrod housings

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、車両に搭載されたエンジンのエアクリーナに吸気を導くためのエアダクト、とくに、エンジン騒音の遮蔽作用をそなえたエアダクトに関する。
【0002】
【従来の技術】
乗用車等に搭載されたエンジンのエアクリーナに吸気を導くための従来のエアダクトは、前端がヘッドランプの裏側付近に開口し、エンジンルーム内に配置されたバッテリ等の付属機器を迂回しながら車両後方へ延びて、エンジンのシリンダヘッド近傍に設置されたエアクリーナへ接続されているのが一般的であるが、この場合には、バッテリ等の付属機器と干渉することを回避するためエアダクトを車幅方向に大きく屈曲させざるをえないので、エアダクト内における吸気の曲がり損失が比較的大きくなり、また、ヘッドランプ等による外気の流入抵抗のため、エンジンルーム内の暖気が吸気としてエアダクトに取り込まれやすいので、それだけエンジンの実質的な吸入効率が低下する不具合があった。
他方、エンジンの上面がエンジンルーム内に露出していると、エンジン騒音の遮蔽が困難となると共に、エンジンルーム内の見栄えがよくない欠点があった。
【0003】
【発明が解決しようとする課題】
本発明は、車両に搭載されたエンジンのエアクリーナ等に対して比較的効率よく吸気を導き、かつ、エンジン騒音を良好に遮蔽できるエアダクトを提供しようとするものである。
【0004】
【課題を解決するための手段】
このため、本発明にかかる請求項1所載のエアダクトは、車体に取り付けられ上記車体の前端に開口するエア導入管と、車載エンジンのシリンダヘッドカバー上面を覆って吸音材を介し上記シリンダヘッドカバーに取り付けられると共に、上記エア導入管の開口から導入された吸気が流入するエア取入管を有するエアダクト本体と、上記エアダクト本体と上記エアダクト本体の後方に位置するエアクリーナとを接続するエア排出管とをそなえている。
従って、エアダクト本体が車載エンジンのシリンダヘッドカバー上面を覆っているので、車載エンジンの騒音を良好に遮蔽することができると同時に、エアダクト本体が吸音材を介してシリンダヘッドカバーに取り付けられているので、この吸音材によっても車載エンジンの騒音を良好に遮蔽し、かつ、吸収することができる。
また、本発明にかかる請求項2所載のエアダクトは、請求項1において、上記エアダクト本体が上記シリンダヘッドカバーの上面をほぼ全面的に覆っており、エアダクト本体が車載エンジンのシリンダヘッドカバー上面をほぼ前面的に覆っているので、車載エンジンの騒音をとくに良好に遮蔽することができる。
【0005】
本発明にかかる請求項3所載のエアダクトは、エンジンルームにおける両側壁の前部上端を車幅方向に連結すると共に、上記エア導入管が取り付けられるアッパーバーと、上記エア導入管と上記エアダクト本体との間に設けられた軟質の蛇腹状連通管とをそなえている。
すなわち、エア導入管とエアダクト本体との間に軟質の蛇腹状連通管が設けられているので、車載エンジンのシリンダヘッドカバーに取り付けられたエアダクト本体に対して車載エンジンから加えられる振動は、エア導入管とエアダクト本体との間に配置されて両者を接続する軟質の蛇腹状連通管により吸収され、エア導入管が取り付けられた車体に伝達されることを容易に防止することができる。
【0006】
また、本発明にかかる請求項所載のエアダクトは、請求項3において、上記エア導入管、上記エア取入管、及び、上記エア排出管が車両前後方向にほぼ直線的に配置されている。
従って、エア通路全体が車両の前後方向に延びているため、エア取入管から導入した吸気をエア排出管からさらに車両後方のエアクリーナへ効率よく導くことができる長所がある。
【0007】
また、本発明にかかる請求項5所載のエアダクトは、請求項1〜請求項4のいずれかにおいて、上記エアダクト本体が、略水平方向へ広がった中央の窪みを有する板状の基部と、上記窪みを覆う平板部を有する蓋部とをそなえ、上記エアダクト本体の内部に上記窪みと上記平板部とで偏平なエア通路が形成されており、さらに、本発明にかかる請求項6所載のエアダクトは、請求項5において、上記エア通路の両側に、上記エア通路に連通するレゾネータが設けられており、この場合、エア通路における吸気の流れから生じる騒音をレゾネータによって低減させることができる。
【0008】
【発明の実施の形態】
以下、図面に示す本発明の各実施形態例について、同等部分にはそれぞれ同一符号を付けて説明する。
図1〜図4において、エアダクト1は樹脂製本体2、軟質樹脂製の蛇腹状連通管3、及び、樹脂製エア導入管4から構成され、本体2は基部5と蓋部6とから形成されている。
【0009】
基部5は全体的に板状であって、中央の略水平方向へ広がった窪み7と、窪み7の両側方へ広がった翼部8とを有し、一端に窪み7と連通するラッパ状のエア排出管9が一体成形されていると共に、他端に断面略コ字状の偏平なエア取入部10が一体成形されている。
【0010】
一方、蓋部6は平板部11の一端に断面略コ字状の偏平なエア取入部12が一体成形されており、平板部11が窪み7上を塞ぐように基部5へ嵌め込まれ、かつ、エア取入部12がエア取入部10と組み合わされてエア取入管13が形成され、蓋部6の周縁が基部5に接着または溶着されることにより、略水平方向に偏平で、エア排出管9及びエア取入管13にそれぞれ連通するエア通路14が形成され、本体2の下面全体には図示しない吸音材が張り付けられている。
【0011】
また、本体2は、乗用車等のエンジンルーム20内に設置されたエンジン21のシリンダヘッドカバー22上に配置され、本体2に形成されたボルト孔15に上方から挿入された図示しないボルトにより、ラバーインシュレータを挟んでシリンダヘッドカバー22に取り付けられて、シリンダヘッドカバー22の上面をほぼ全体的に覆っていると共に、エア排出管9の端部外周に短冊状のスポンジが巻き付けられた状態で、エア排出管9がエアクリーナ23に接続されている。
【0012】
さらに、エア取入管13の先端が蛇腹状連通管3の一端に嵌め込まれ、蛇腹状連通管3の他端にエア導入管4の一端が嵌め込まれて、エア導入管4と本体2のエア通路14とが連通管3で接続されることにより、エア導入管4、蛇腹状連通管3、エア取入管13、エア通路14及びエア排出管9が車両前後方向へほぼ直線的に配置されており、エア導入管4の他端は、エンジンルーム20における両側壁の前部上端を車幅方向に連結するアッパーバー24のほぼ中央上面にねじ止めされ、エンジンルーム20を覆うフード25の先端直下に開口している。
【0013】
上記装置において、エアダクト1におけるエア通路は全体的に偏平ではあるが、シリンダヘッドカバー22の上方には付属機器が全く配置されていないため、車両前端から後方のエアクリーナ23へ向かって順次エア導入管4、蛇腹状連通管3、エア取入管13、エア通路14及びエア排出管9によりほぼ直線的に形成されているので、その内部を流れるエアが受ける抵抗は比較的少なく、しかも、エア導入管4の先端がフード25先端直下の車幅方向におけるほぼ中央で開口していて、車両前方から冷気を容易に取り入れることができるので、冷気をエアクリーナ23へ効率良く導いて、エンジン21に対する吸入効率を確実に向上させることができる。
【0014】
また、エアダクト本体2は、偏平なエア通路14及びその両側方へ広がった翼部8によりシリンダヘッドカバー22の上面をほぼ全体的に覆い、かつ、下面全体に吸音材が張り付けられているので、エンジン21が発生させる騒音を良好に遮蔽し、かつ、吸収することができると同時に、エンジン21側に連結されたエアダクト本体2と、車体側に連結されたエア導入管4とが軟質樹脂製の蛇腹状連通管3により接続されていて、エンジン21からエアダクト本体2へ伝えられた振動がエア導入管4へ伝達されることを容易に遮断させうるので、車両としての騒音及び振動を容易に抑制できる大きな長所がある。
【0015】
さらに、エンジン21の上面が偏平なエアダクト本体2により覆われているため、エンジンルーム20を覆うフード25を上方へ開けた場合、エンジンルーム20内の見栄えを格段に向上させることが可能となる利点もある。
【0016】
なお、上記実施形態例では、エアダクト本体の基部に形成された窪みを蓋部の平板部が塞ぐように構成されているが、図5に示されているように、エアダクト本体2の基部5をほぼ平板状にすると共に、偏平な窪み7と、その両側の窪み30とを形成した底部31が、基部5の下面に接着または溶着されて、基部5及び窪み7により略水平方向に偏平なエア通路14が形成され、かつ、基部5及び窪み30によりそれぞれエア通路14と連通するレゾネータ32が形成され、底部31の下面と、底部31により覆われていない基部5の下面とにわたってほぼ全面的に吸音材が張り付けられ、他の部分は上記実施形態例と同様の構造としても、上記実施形態例と同等の作用効果を奏することができ、さらに、エア通路14における吸気の流れから生じる騒音をレゾネータ32により低減させることができる利点がある。
【0017】
【発明の効果】
本発明にかかる請求項1及び請求項2所載のエアダクトにおいては、エアダクト本体が車載エンジンのシリンダヘッドカバー上面を覆っているので、車載エンジンの騒音を良好に遮蔽することができると共に、エンジンルーム内の見栄えを向上させることができ、とくに、吸音材によって車載エンジンの騒音を良好に遮蔽し、かつ、吸収することができる。
また、本発明にかかる請求項3所載のエアダクトにおいては、車載エンジンの振動が車体に伝達されることを蛇腹状連通管により抑制して、車体の振動を容易に防止することができる。
さらに、本発明にかかる請求項4所載のエアダクトにおいては、エア導入管、エア取入管、及び、エア排出管からなるエア通路全体が車両前後方向にほぼ直線的に配置されていて、吸気をエア導入管から車両後方のエアクリーナへ効率よく導くことができる。
【0018】
また、本発明にかかる請求項所載のエアダクトにあっては、エアダクト本体の内部に形成されたエア通路の両側にレゾネータが設けられているので、エア通路における吸気の流れから生じる騒音をこのレゾネータによって低減させることができる。
【図面の簡単な説明】
【図1】本発明の実施形態例における斜視図。
【図2】上記実施形態例の要部分解斜視図。
【図3】図1の III−III 縦断面拡大図。
【図4】図1のIV−IV縦断面拡大図。
【図5】本発明の他の実施形態例における図3相当の縦断面図。
【符号の説明】
1 エアダクト
2 本体
3 連通管
4 エア導入管
5 基部
6 蓋部
14 エア通路
22 シリンダヘッドカバー
23 エアクリーナ
24 アッパーバー
25 フード
31 底部
32 レゾネータ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air duct for guiding intake air to an air cleaner of an engine mounted on a vehicle, and more particularly to an air duct having a shielding action for engine noise.
[0002]
[Prior art]
A conventional air duct for guiding intake air to an air cleaner of an engine mounted on a passenger car or the like has a front end that opens near the back side of the headlamp, and bypasses accessories such as a battery installed in the engine room to the rear of the vehicle. Generally, it is connected to an air cleaner installed near the cylinder head of the engine, but in this case, the air duct is installed in the vehicle width direction to avoid interference with battery and other accessories. Since it must be bent greatly, the bending loss of the intake air in the air duct becomes relatively large, and the warm air in the engine room is easily taken into the air duct as intake air due to the inflow resistance of outside air due to headlamps, etc. As a result, there was a problem that the substantial intake efficiency of the engine decreased.
On the other hand, if the upper surface of the engine is exposed in the engine room, it is difficult to shield the engine noise, and the engine room has a poor appearance.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide an air duct that can guide intake air relatively efficiently to an air cleaner or the like of an engine mounted on a vehicle and that can well shield engine noise.
[0004]
[Means for Solving the Problems]
For this reason, the air duct according to the first aspect of the present invention is attached to the cylinder head cover via a sound absorbing material that covers the upper surface of the cylinder head cover of the vehicle-mounted engine and the air introduction pipe that is attached to the vehicle body and opens at the front end of the vehicle body. And an air duct body having an air intake pipe into which intake air introduced from the opening of the air introduction pipe flows, and an air discharge pipe for connecting the air duct body and an air cleaner located behind the air duct body. Yes.
Therefore, since the air duct body covers the upper surface of the cylinder head cover of the in-vehicle engine, the noise of the in-vehicle engine can be well shielded, and at the same time, the air duct body is attached to the cylinder head cover via the sound absorbing material. The sound absorbing material can also satisfactorily shield and absorb the noise of the in-vehicle engine.
According to a second aspect of the present invention, there is provided the air duct according to the first aspect, wherein the air duct body covers the entire upper surface of the cylinder head cover almost entirely, and the air duct body substantially covers the upper surface of the cylinder head cover of the in-vehicle engine. Therefore, the noise of the vehicle-mounted engine can be shielded particularly well.
[0005]
According to a third aspect of the present invention, there is provided an air duct which connects front upper ends of both side walls in an engine room in the vehicle width direction, an upper bar to which the air introduction pipe is attached, the air introduction pipe and the air duct main body. And a soft bellows-shaped communication pipe provided between the two.
That is, since a soft bellows-like communication pipe is provided between the air introduction pipe and the air duct main body, vibration applied from the in-vehicle engine to the air duct main body attached to the cylinder head cover of the in-vehicle engine It can be easily prevented from being absorbed by the soft bellows-like communication pipe disposed between the air duct body and the air duct main body, and transmitted to the vehicle body to which the air introduction pipe is attached.
[0006]
An air duct according to a fourth aspect of the present invention is the air duct according to the third aspect, wherein the air introduction pipe, the air intake pipe, and the air discharge pipe are arranged substantially linearly in the longitudinal direction of the vehicle.
Therefore, since the entire air passage extends in the longitudinal direction of the vehicle, there is an advantage that intake air introduced from the air intake pipe can be efficiently guided from the air discharge pipe to an air cleaner at the rear of the vehicle.
[0007]
According to a fifth aspect of the present invention, there is provided the air duct according to any one of the first to fourth aspects, wherein the air duct main body has a plate-like base portion having a central depression extending in a substantially horizontal direction, A flat air passage is formed in the interior of the air duct body by the recess and the flat plate portion, and the air duct according to claim 6 according to the present invention. In claim 5, a resonator communicating with the air passage is provided on both sides of the air passage. In this case, noise generated from the flow of intake air in the air passage can be reduced by the resonator.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the following, each embodiment of the present invention shown in the drawings will be described with the same reference numerals given to the equivalent parts.
1 to 4, the air duct 1 includes a resin main body 2, a soft resin bellows-like communication pipe 3, and a resin air introduction pipe 4, and the main body 2 is formed of a base portion 5 and a lid portion 6. ing.
[0009]
The base portion 5 is generally plate-shaped, and has a recess 7 extending in the center in a substantially horizontal direction, and a wing portion 8 extending on both sides of the recess 7, and a trumpet-like shape communicating with the recess 7 at one end. An air discharge pipe 9 is integrally formed, and a flat air intake portion 10 having a substantially U-shaped cross section is integrally formed at the other end.
[0010]
On the other hand, a flat air intake portion 12 having a substantially U-shaped cross section is integrally formed at one end of the flat plate portion 11, the lid portion 6 is fitted into the base portion 5 so as to close the top of the recess 7, and The air intake portion 12 is combined with the air intake portion 10 to form an air intake tube 13, and the peripheral edge of the lid portion 6 is bonded or welded to the base portion 5. Air passages 14 respectively communicating with the air intake pipes 13 are formed, and a sound absorbing material (not shown) is attached to the entire lower surface of the main body 2.
[0011]
The main body 2 is disposed on a cylinder head cover 22 of an engine 21 installed in an engine room 20 of a passenger car or the like, and a rubber insulator is inserted by a bolt (not shown) inserted from above into a bolt hole 15 formed in the main body 2. The air exhaust pipe 9 is attached to the cylinder head cover 22 so as to cover the entire upper surface of the cylinder head cover 22 and a strip-like sponge is wound around the outer periphery of the end of the air exhaust pipe 9. Is connected to the air cleaner 23.
[0012]
Further, the tip of the air intake pipe 13 is fitted into one end of the bellows-like communication pipe 3, and one end of the air introduction pipe 4 is fitted into the other end of the bellows-like communication pipe 3, and the air passage between the air introduction pipe 4 and the main body 2. 14, the air introduction pipe 4, the bellows-like communication pipe 3, the air intake pipe 13, the air passage 14 and the air discharge pipe 9 are arranged substantially linearly in the vehicle front-rear direction. The other end of the air introduction tube 4 is screwed to the upper surface of the upper bar 24 that connects the front upper ends of both side walls in the engine room 20 in the vehicle width direction, and is directly below the front end of the hood 25 that covers the engine room 20. It is open.
[0013]
In the above apparatus, although the air passage in the air duct 1 is generally flat, no accessory device is disposed above the cylinder head cover 22, so that the air introduction pipe 4 is sequentially moved from the vehicle front end toward the rear air cleaner 23. The bellows-like communication pipe 3, the air intake pipe 13, the air passage 14 and the air discharge pipe 9 are formed almost linearly, so that the resistance of the air flowing through the inside is relatively small, and the air introduction pipe 4 Since the front end of the hood 25 is open at the center in the vehicle width direction directly below the front end of the hood 25, it is possible to easily take in cool air from the front of the vehicle, so that the cool air is efficiently guided to the air cleaner 23 and the intake efficiency to the engine 21 is ensured. Can be improved.
[0014]
Further, the air duct main body 2 covers the entire upper surface of the cylinder head cover 22 by the flat air passage 14 and the wings 8 spreading to both sides thereof, and the sound absorbing material is attached to the entire lower surface. The air duct body 2 connected to the engine 21 side and the air introduction pipe 4 connected to the vehicle body side can be satisfactorily shielded and absorbed by the noise generated by the engine 21 and the bellows made of soft resin. Since the vibration transmitted from the engine 21 to the air duct body 2 can be easily blocked from being transmitted to the air introduction pipe 4, noise and vibration as a vehicle can be easily suppressed. There are big advantages.
[0015]
Further, since the upper surface of the engine 21 is covered with the flat air duct body 2, when the hood 25 covering the engine room 20 is opened upward, the appearance in the engine room 20 can be remarkably improved. There is also.
[0016]
In addition, in the said embodiment, although it comprised so that the flat part of a cover part might block the hollow formed in the base of an air duct main body, as FIG. 5 shows, the base 5 of the air duct main body 2 is comprised. The bottom 31 formed with the flat plate 7 and the flat dent 7 and the dents 30 on both sides thereof is bonded or welded to the lower surface of the base 5, and the air flattened in the substantially horizontal direction by the base 5 and the dent 7. The passage 14 is formed, and a resonator 32 that communicates with the air passage 14 is formed by the base 5 and the depression 30, respectively. The resonator 32 is substantially entirely extended from the bottom surface of the bottom portion 31 to the bottom surface of the base portion 5 that is not covered by the bottom portion 31. Even if the sound absorbing material is attached and the other parts have the same structure as the above embodiment, the same effect as the above embodiment can be obtained. There is an advantage that the noise generated can be reduced by the resonator 32.
[0017]
【The invention's effect】
In the air duct according to the first and second aspects of the present invention, the air duct body covers the cylinder head cover upper surface of the in-vehicle engine, so that the noise of the in-vehicle engine can be well shielded, and the inside of the engine room In particular, the noise of the in-vehicle engine can be well shielded and absorbed by the sound absorbing material.
In the air duct according to the third aspect of the present invention, the vibration of the vehicle-mounted engine can be prevented from being transmitted to the vehicle body by the bellows-shaped communication pipe, and the vibration of the vehicle body can be easily prevented.
Further, in the air duct according to the fourth aspect of the present invention, the entire air passage composed of the air introduction pipe, the air intake pipe, and the air discharge pipe is arranged substantially linearly in the vehicle front-rear direction, and takes in the intake air. It is possible to efficiently guide from the air introduction pipe to the air cleaner behind the vehicle.
[0018]
In the air duct according to the sixth aspect of the present invention, since the resonators are provided on both sides of the air passage formed inside the air duct main body, noise generated from the flow of intake air in the air passage is prevented. It can be reduced by a resonator.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a main part of the embodiment.
3 is an enlarged vertical sectional view taken along line III-III in FIG.
4 is an enlarged vertical sectional view taken along the line IV-IV in FIG. 1;
FIG. 5 is a longitudinal sectional view corresponding to FIG. 3 in another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air duct 2 Main body 3 Communication pipe 4 Air introduction pipe 5 Base part 6 Lid part 14 Air passage 22 Cylinder head cover 23 Air cleaner 24 Upper bar 25 Hood 31 Bottom part 32 Resonator

Claims (6)

車体に取り付けられ上記車体の前端に開口するエア導入管と、車載エンジンのシリンダヘッドカバー上面を覆って吸音材を介し上記シリンダヘッドカバーに取り付けられると共に、上記エア導入管の開口から導入された吸気が流入するエア取入管を有するエアダクト本体と、上記エアダクト本体と上記エアダクト本体の後方に位置するエアクリーナとを接続するエア排出管とをそなえたエアダクト。An air introduction pipe that is attached to the vehicle body and opens at the front end of the vehicle body, and an air intake pipe that covers the top surface of the cylinder head cover of the vehicle-mounted engine and is attached to the cylinder head cover via a sound absorbing material, and intake air introduced from the opening of the air introduction pipe flows An air duct comprising: an air duct main body having an air intake pipe to be connected; and an air exhaust pipe connecting the air duct main body and an air cleaner located behind the air duct main body. 請求項1において、上記エアダクト本体が上記シリンダヘッドカバーの上面をほぼ全面的に覆ったエアダクト。2. The air duct according to claim 1, wherein the air duct main body substantially entirely covers the upper surface of the cylinder head cover. 請求項2において、エンジンルームにおける両側壁の前部上端を車幅方向に連結すると共に、上記エア導入管が取り付けられるアッパーバーと、上記エア導入管と上記エアダクト本体との間に設けられた軟質の蛇腹状連通管とをそなえたエアダクト。The soft bar provided between the air introduction pipe and the air duct main body according to claim 2, wherein the front upper ends of both side walls in the engine room are connected in the vehicle width direction, and the upper bar to which the air introduction pipe is attached. Air duct equipped with a bellows-like communication pipe. 請求項3において、上記エア導入管、上記エア取入管、及び、上記エア排出管が車両前後方向にほぼ直線的に配置されたエアダクト。4. The air duct according to claim 3, wherein the air introduction pipe, the air intake pipe, and the air discharge pipe are arranged substantially linearly in the vehicle front-rear direction. 請求項1〜請求項4のいずれかにおいて、上記エアダクト本体が、略水平方向へ広がった中央の窪みを有する板状の基部と、上記窪みを覆う平板部を有する蓋部とをそなえ、上記エアダクト本体の内部に上記窪みと上記平板部とで偏平なエア通路が形成されたエアダクト。5. The air duct according to claim 1, wherein the air duct main body includes a plate-like base portion having a central depression extending in a substantially horizontal direction and a lid portion having a flat plate portion covering the depression. An air duct in which a flat air passage is formed in the main body by the depression and the flat plate portion. 請求項5において、上記エア通路の両側に、上記エア通路に連通するレゾネータが設けられたエアダクト。6. The air duct according to claim 5, wherein a resonator communicating with the air passage is provided on both sides of the air passage.
JP36192597A 1997-12-10 1997-12-10 Air duct Expired - Lifetime JP3685613B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36192597A JP3685613B2 (en) 1997-12-10 1997-12-10 Air duct

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Application Number Priority Date Filing Date Title
JP36192597A JP3685613B2 (en) 1997-12-10 1997-12-10 Air duct

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JPH11170875A JPH11170875A (en) 1999-06-29
JP3685613B2 true JP3685613B2 (en) 2005-08-24

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Publication number Priority date Publication date Assignee Title
JP4794513B2 (en) * 2007-07-10 2011-10-19 株式会社イノアックコーポレーション Intake duct for vehicle
JP5263671B2 (en) * 2008-11-04 2013-08-14 スズキ株式会社 Intake device for vehicle engine
JP6376202B2 (en) * 2016-10-20 2018-08-22 マツダ株式会社 Vehicle front structure
JP6527551B2 (en) * 2017-06-14 2019-06-05 本田技研工業株式会社 Intake duct module

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