JPH11294279A - Air intake duct of engine - Google Patents
Air intake duct of engineInfo
- Publication number
- JPH11294279A JPH11294279A JP9587698A JP9587698A JPH11294279A JP H11294279 A JPH11294279 A JP H11294279A JP 9587698 A JP9587698 A JP 9587698A JP 9587698 A JP9587698 A JP 9587698A JP H11294279 A JPH11294279 A JP H11294279A
- Authority
- JP
- Japan
- Prior art keywords
- intake duct
- opening
- intake
- air
- duct
- 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
- Superstructure Of Vehicle (AREA)
- 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】本発明は、自動車のエンジン
ルームに配置されて吸気をエアクリーナに導くエンジン
の吸気ダクトに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake duct for an engine which is arranged in an engine room of an automobile and guides intake air to an air cleaner.
【０００２】[0002]
【従来の技術】エアクリーナに吸気を導く吸気ダクトを
吐出音の音圧レベルが異なる２本の吸気ダクトから構成
し、それら２本の吸気ダクトの吸気口をエンジンルーム
内の音響的な増幅特性が異なる位置に配置して吸気騒音
の低減を図るものが、特許第２５１６６８７号公報によ
り公知である。2. Description of the Related Art An intake duct for guiding intake air to an air cleaner is composed of two intake ducts having different sound pressure levels of discharge sound, and the intake ports of the two intake ducts have acoustic amplification characteristics in an engine room. Japanese Patent No. 2516687 discloses a device that is arranged at different positions to reduce intake noise.
【０００３】[0003]
【発明が解決しようとする課題】ところで上記従来のも
のは、吸気ダクトに水や塵が吸入されると、それらの水
や塵は排出されることなくエアクリーナに供給されてし
まう可能性があるため、エアクリーナの寿命低下やエン
ジンのウオータロックが懸念されるだけでなく、吸気ダ
クトに吸入された低温の空気をエンジンルーム内の補機
類の冷却に利用できないという問題があった。However, in the above conventional apparatus, if water or dust is sucked into the intake duct, the water or dust may be supplied to the air cleaner without being discharged. In addition, there is a concern that the life of the air cleaner may be shortened and water lock of the engine may occur, and that the low-temperature air drawn into the intake duct may not be used for cooling accessories in the engine room.
【０００４】本発明は前述の事情に鑑みてなされたもの
で、エンジンの吸気騒音の低減を図りながら、エアクリ
ーナへの異物の吸い込みを防止するとともに吸気による
補機類の冷却を可能にすることを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to prevent intake of foreign substances into an air cleaner and to allow cooling of accessories by intake air while reducing engine intake noise. Aim.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１に記載された発明は、自動車のエンジンル
ームに配置されて吸気をエアクリーナに導くエンジンの
吸気ダクトにおいて、一端に車体前方に向けて開口する
吸気導入口が形成された第１吸気ダクトと、一端にエア
クリーナに接続されるエアクリーナ接続部が形成された
第２吸気ダクトとを備えてなり、第１吸気ダクトの他端
に形成された第１開口から流出する吸気の一部を、第２
吸気ダクトの他端に形成された第２開口に供給すること
を特徴とする。According to one aspect of the present invention, there is provided an intake duct for an engine which is disposed in an engine room of an automobile and guides intake air to an air cleaner. A first intake duct formed with an intake inlet opening toward the air inlet, and a second intake duct formed with an air cleaner connection portion connected to the air cleaner at one end, and provided at the other end of the first intake duct. A part of the intake air flowing out of the formed first opening is
The air is supplied to a second opening formed at the other end of the intake duct.
【０００６】上記構成によれば、第１吸気ダクトの吸気
導入口から第２吸気ダクトのエアクリーナ接続部に至る
吸気通路が第１吸気ダクトの第１開口および第２吸気ダ
クトの第２開口において分割されるので、吸気の低周波
領域での共鳴を防止して室内こもり音を改善することが
できる。また前記分割部から漏れた吸気によってエンジ
ンルーム内の補機類の冷却を促進することができるだけ
でなく、第１吸気ダクトが異物等により閉塞されても、
前記分割部から吸入した吸気を第２吸気ダクトを経てエ
アクリーナに導くことができ、しかも第１吸気ダクトに
吸入された塵や水等の異物が第２吸気ダクトに流入する
のを防止することができる。According to the above configuration, the intake passage extending from the intake port of the first intake duct to the air cleaner connection portion of the second intake duct is divided at the first opening of the first intake duct and the second opening of the second intake duct. Therefore, it is possible to prevent the resonance of the intake air in a low frequency region and to improve the muffled indoor sound. Further, not only can the cooling of the auxiliary devices in the engine room be promoted by the intake air leaking from the divided portion, but also if the first intake duct is blocked by foreign matter or the like,
It is possible to guide the intake air sucked from the divided portion to the air cleaner through the second air intake duct, and to prevent foreign substances such as dust and water sucked into the first air intake duct from flowing into the second air intake duct. it can.
【０００７】また請求項２に記載された発明は、請求項
１の構成に加えて、前記第１吸気ダクトの他端に形成さ
れた第１開口の方向と前記第２吸気ダクトの他端に形成
された第２開口の方向とが鈍角を以て交差することを特
徴とする。According to a second aspect of the present invention, in addition to the configuration of the first aspect, a direction of a first opening formed at the other end of the first intake duct and a second end of the second intake duct are provided. The direction of the formed second opening intersects at an obtuse angle.
【０００８】上記構成によれば、第１吸気ダクトの第１
開口と第２吸気ダクトの第２開口とが鈍角を以て交差す
るので、第１吸気ダクト吸気導入口から吸い込まれて第
１開口から排出された異物が第２吸気ダクトの第２開口
に直接吸い込まれるのを防止することができる。[0008] According to the above configuration, the first air intake duct has the first
Since the opening and the second opening of the second intake duct intersect at an obtuse angle, foreign matter sucked from the first intake duct intake inlet and discharged from the first opening is directly sucked into the second opening of the second intake duct. Can be prevented.
【０００９】また請求項３に記載された発明は、請求項
１または２の構成に加えて、前記第１吸気ダクトに、前
記第１開口よりも車体前方側に位置する第３開口を設け
たことを特徴とする。According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the first intake duct is provided with a third opening located on the vehicle body front side with respect to the first opening. It is characterized by the following.
【００１０】上記構成によれば、第１吸気ダクトの吸気
導入口から吸い込まれた塵や水等の異物を、前記第１開
口からだけでなく第３開口からも排出して該異物が第２
吸気ダクトに吸い込まれるのを確実に防止することがで
きるだけでなく、前記第３開口から吸気の一部を流出さ
せて補機類の冷却を促進することができる。[0010] According to the above construction, foreign matter such as dust and water sucked from the intake inlet of the first intake duct is discharged not only from the first opening but also from the third opening, and the foreign matter is removed from the second opening.
Not only can it be reliably prevented from being sucked into the intake duct, but also a part of the intake air can flow out from the third opening to promote the cooling of accessories.
【００１１】また請求項４に記載された発明は、請求項
３の構成に加えて、前記第１吸気ダクトは湾曲した軸線
を有しており、該第１吸気ダクトの前記湾曲方向外側の
壁面に前記第３開口を形成したことを特徴とする。According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the first intake duct has a curved axis, and the first intake duct has a curved outer wall surface. Wherein the third opening is formed.
【００１２】上記構成によれば、前記第３開口が第１吸
気ダクトの湾曲方向外側の壁面に形成されているので、
第１吸気ダクトに吸い込まれた異物を外部に効果的に排
出することができるだけでなく、第３開口の近傍を通過
する吸気によって笛を吹くような騒音が発生するのを抑
制することができる。[0012] According to the above configuration, since the third opening is formed on the outer wall surface in the bending direction of the first intake duct,
Not only can the foreign substances sucked into the first intake duct be effectively discharged to the outside, but also the generation of a noise like a whistle caused by the intake air passing near the third opening can be suppressed.
【００１３】また請求項５に記載された発明は、請求項
１〜４の何れかの構成に加えて、前記エンジンルームを
覆うボンネットの下面に前記第１吸気ダクトを固定した
ことを特徴とする。According to a fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the first intake duct is fixed to a lower surface of a hood covering the engine room. .
【００１４】上記構成によれば、第１吸気ダクトをボン
ネットの下面に固定したので、ボンネットを開いてエン
ジンルーム内のメンテナンスを行う際に、第１吸気ダク
トが邪魔になるのを防止することができ、しかも第１吸
気ダクトのレイアウトの自由度が増加する。According to the above configuration, since the first intake duct is fixed to the lower surface of the hood, it is possible to prevent the first intake duct from being obstructed when the hood is opened to perform maintenance in the engine room. And the degree of freedom of the layout of the first intake duct is increased.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態を、添
付図面に示した本発明の実施例に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.
【００１６】図１〜図５は本発明の一実施例を示すもの
で、図１は自動車のエンジンルームの側面図、図２は図
１の２方向矢視図、図３は第１吸気ダクトの全体平面
図、図４は図３の４方向矢視図、図５は図３の５−５線
断面図である。1 to 5 show one embodiment of the present invention. FIG. 1 is a side view of an engine room of an automobile, FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1, and FIG. 3 is a first intake duct. 4 is a view in the direction of arrow 4 in FIG. 3, and FIG. 5 is a sectional view taken along line 5-5 in FIG.
【００１７】図１および図２に示すように、フロントエ
ンジン・フロントドライブの車両Ｖのエンジンルーム１
にクランクシャフト２を車体左右方向に配置した直列４
気筒エンジンＥが搭載されており、このエンジンＥの右
側面にトランスミッションＴが一体に設けられる。エン
ジンＥのシリンダヘッドの前面には排気マニホールド
３、排気ガス浄化触媒４および排気管５が接続され、シ
リンダヘッドの後面には吸気マニホールド６が接続され
る。As shown in FIGS. 1 and 2, an engine room 1 of a vehicle V having a front engine and a front drive is provided.
Series 4 in which the crankshaft 2 is arranged in the lateral direction of the vehicle
A cylinder engine E is mounted, and a transmission T is integrally provided on the right side of the engine E. An exhaust manifold 3, an exhaust gas purifying catalyst 4, and an exhaust pipe 5 are connected to a front surface of a cylinder head of the engine E, and an intake manifold 6 is connected to a rear surface of the cylinder head.
【００１８】車体前端のフロントグリル７の後部に臨む
エンジンルーム１にラジエータ８およびエアコン用のコ
ンデンサ９が配置されており、ラジエータ８の上方を通
過した空気は第１吸気ダクト１０、第２吸気ダクト１
１、第３吸気ダクト１２、エアクリーナ１３、エアフロ
ーチューブ１４、スロットルボディ１５およびサージタ
ンク１６を経て前記吸気マニホールド６に供給される。
第２吸気ダクト１１の外周を覆うようにレゾネータチャ
ンバー２１が一体に設けられる。第１吸気ダクト１０は
バッテリ１７の上方を覆う位置に配置され、またレゾネ
ータチャンバー２１の右後部に形成した凹部２１1 に嵌
合するように電子制御ユニット１８が支持される。A radiator 8 and a condenser 9 for an air conditioner are arranged in an engine room 1 facing a rear portion of a front grille 7 at a front end of the vehicle body. Air passing above the radiator 8 is supplied to a first intake duct 10 and a second intake duct. 1
1, the third intake duct 12, the air cleaner 13, the air flow tube 14, the throttle body 15, and the surge tank 16 are supplied to the intake manifold 6.
A resonator chamber 21 is provided integrally so as to cover the outer periphery of the second intake duct 11. First intake duct 10 is arranged at a position covering the upper side of the battery 17, also electronic control unit 18 so as to fit in a recess 21 1 formed in the right rear portion of the resonator chamber 21 is supported.
【００１９】図３〜図５を併せて参照すると明らかなよ
うに、上下方向に偏平に形成された第１吸気ダクト１０
は概略Ｓ字状に湾曲する中心線Ｌを有しており、その前
端にフロントグリル７を通過した低温の空気を吸入すべ
く車体前方を向く吸気導入口１０1 を備えるとともに、
その後端に車体後方を向く第１開口１０2 を備える。第
１吸気ダクト１０の通路断面積は、吸気導入口１０1 に
おけるＳ1 から第１開口１０2 におけるＳ2 に漸減して
いる（図３参照）。このように第１吸気ダクト１０の通
路断面積を吸気の流れ方向に漸減させることにより、第
１開口１０2 における吸気の流速を高めて過給効果を発
揮させることができる。As is apparent from FIGS. 3 to 5 together, the first intake duct 10 formed flat in the vertical direction.
Together has a center line L of curving outline S-shape, comprises a suction inlet 10 1 facing the front of the vehicle body so as to suck the cold air passing through the front grille 7 at its front end,
Comprising a first opening 10 2 facing the rear of the vehicle body at its rear end. The passage cross-sectional area of the first intake duct 10 is gradually decreased to S 2 in the first opening 10 2 from S 1 in the intake inlet 10 1 (see FIG. 3). By thus decreasing the passage sectional area of the first intake duct 10 in the flow direction of the intake air, it can be exhibited supercharging effect by increasing the flow rate of intake air in the first opening 10 2.
【００２０】第１吸気ダクト１０の外周には４個の取付
ブラケット１０2 〜１０6 が一体に形成されており、こ
れら取付ブラケット１０3 〜１０6 を貫通するクリップ
（図示せず）で第１吸気ダクト１０がボンネット１９の
下面に設けたスチフナ２０（図１参照）に沿うように固
定される。第１吸気ダクト１０の上壁および下壁は、前
記中心線Ｌに沿うように形成された補強リブ１０7 （図
３および図５参照）で一体に接続されて剛性が高められ
ている。また４個の取付ブラケット１０3 〜１０6 は補
強リブ１０7 の回りを囲むように配置されているため、
それらが相互に補強し合って第１吸気ダクト１０全体の
剛性が高められる。Four mounting brackets 10 2 to 10 6 are integrally formed on the outer periphery of the first air intake duct 10, and a first clip (not shown) penetrating the mounting brackets 10 3 to 10 6 is used. The intake duct 10 is fixed along a stiffener 20 (see FIG. 1) provided on the lower surface of the hood 19. The upper wall and the lower wall of the first intake duct 10 are integrally connected by reinforcing ribs 10 7 (see FIGS. 3 and 5) formed along the center line L to increase rigidity. Since the four mounting brackets 10 3 to 10 6 are disposed so as to surround around the reinforcing ribs 107,
They reinforce each other to increase the rigidity of the entire first intake duct 10.
【００２１】また第１吸気ダクト１０の第１開口１０2
の近傍に第３開口１０8 （図３参照）が形成される。こ
の第３開口１０8 は、第１吸気ダクト１０の湾曲する中
心線Ｌの湾曲方向外側に配置されているため、吸気に含
まれた水や塵等の異物が遠心力で湾曲方向外側に振り出
されることを利用し、その異物を前記第３開口１０8か
ら外部に効果的に排出することができる。仮に、第３開
口１０8 を前記中心線Ｌの湾曲方向内側に配置したとす
ると、第３開口１０8 の近傍を通過する吸気によって笛
を吹くような騒音が発生する場合があるが、第３開口１
０8 を前記中心線Ｌの湾曲方向外側に配置したことによ
り前記騒音の発生を未然に回避することができる。しか
も第１吸気ダクト１０内を流れる吸気の一部が第３開口
１０8 からエンジンルーム１内に排出されるため、その
吸気によってエンジンルーム１内に配置された補機類の
冷却を促進することができる。The first opening 10 2 of the first intake duct 10
The third opening 108 (see FIG. 3) is formed in the vicinity of. The third opening 108, because they are located in the curved outwardly of the center line L of the curvature of the first intake duct 10, swinging the curved outwards in foreign matter centrifugal force of water or dust contained in the intake utilizing be issued, it can be effectively discharged outside the foreign matter from the third opening 10 8. Assuming that the third opening 10 8 is arranged in the curved inward of said center line L, but noise such as whistling by intake air passing through the vicinity of the third opening 108 may occur, third Opening 1
0 8 it is possible to avoid the occurrence of the noise in advance by arranging the curved outward of the center line L. Moreover, since a part of the intake air flowing through the first intake duct 10 is discharged from the third opening 108 in the engine room 1, to promote the cooling of the auxiliary devices disposed in the engine room 1 by the intake Can be.
【００２２】第２吸気ダクト１１は車体左右方向に配置
されており、その右端に前記第１吸気ダクト１０の第１
開口１０2 に臨む第２開口１１1 が形成されるととも
に、その左端に設けたエアクリーナ接続部１１2 が第３
吸気ダクト１２を介してエアクリーナ１３に接続され
る。第２吸気ダクト１１の内部空間を、その中間部に形
成した連通孔１１3 （図２参照）を介してレゾネータチ
ャンバー２１の内部空間に連通させることにより、吸気
騒音の低減が図られている。The second intake duct 11 is disposed in the left-right direction of the vehicle body, and has a first end of the first intake duct 10 at a right end thereof.
Together with the second opening 11 1 facing the opening 10 2 is formed, an air cleaner connection 11 2 3 provided on the left end
It is connected to an air cleaner 13 via an intake duct 12. By connecting the internal space of the second intake duct 11 to the internal space of the resonator chamber 21 through a communication hole 11 3 (see FIG. 2) formed in the intermediate portion, intake noise is reduced.
【００２３】図２から明らかなように、車体後方を向く
第１吸気ダクト１０の第１開口１０ 2 の向き（矢印ａ）
と、車体右前方を向く第２吸気ダクト１１の第２開口１
１1の向き（矢印ｂ）との成す角度αは、約１２０°に
設定されている。前記角度αが９０°以下の鋭角である
と、第１吸気ダクト１０の第１開口１０2 から排出され
た吸気が第２吸気ダクト１１の第２開口１１1 に吸入さ
れ難くなり、また前記角度αが１８０°であって第１吸
気ダクト１０の第１開口１０2 と第２吸気ダクト１１の
第２開口１１1 とが真っ直ぐ対向していると、第１吸気
ダクト１０の第１開口１０2 から排出された吸気に含ま
れる塵や水が第２吸気ダクト１１の第２開口１１1 に吸
入され易くなる。そこで、第２吸気ダクト１１への吸気
の吸入効率と異物の吸入防止とを両立させるべく、前記
角度αを９０°よりも大きく１８０°よりも小さい角
度、即ち鈍角に設定することにより、エンジンＥの出力
向上を図るとともに、第２吸気ダクト１１への異物の吸
い込みを防止してエアクリーナ１３のエレメントの寿命
を延長することができる。As is apparent from FIG. 2, the vehicle faces rearward.
First opening 10 of first intake duct 10 TwoDirection (arrow a)
And the second opening 1 of the second intake duct 11 facing the right front of the vehicle body.
11Angle α with the direction (arrow b) is about 120 °
Is set. The angle α is an acute angle of 90 ° or less.
And the first opening 10 of the first intake duct 10TwoDischarged from
The intake air that flows through the second opening 11 of the second intake duct 111Inhaled
And the angle α is 180 ° and the first suction
First opening 10 of air duct 10TwoAnd the second intake duct 11
Second opening 111Is directly opposed to the first intake
First opening 10 of duct 10TwoIncluded in the intake air exhausted from
Dust and water generated by the second opening 11 of the second intake duct 111Sucking
It becomes easy to enter. Therefore, the intake air to the second intake duct 11
In order to achieve both the inhalation efficiency of
Angle α is larger than 90 ° and smaller than 180 °
Degree, that is, the output of the engine E
In addition to the improvement, the suction of foreign matter into the second intake duct 11
The life of the element of the air cleaner 13 by preventing intrusion
Can be extended.
【００２４】而して、車両Ｖの走行に伴ってフロントグ
リル７から吸い込まれた外気はボンネット１９のスチフ
ナ２０とフロントバルクヘッド２２（図１参照）とに挟
まれた空間に案内されて第１吸気ダクト１０の吸気導入
口１０1 に導入され、該第１吸気ダクト１０の内部を通
過して第１開口１０2 から排出される。第１吸気ダクト
１０の第１開口１０2 から排出された吸気の一部は第２
吸気ダクト１１の第２開口１１1 に導入されるが、前記
吸気の残部はレゾネータチャンバー２１に衝突してエン
ジンルーム１内に拡散し、バッテリ１７、電子制御ユニ
ット１８、デストリビュータ２３（図２参照）等の発熱
体の冷却に供される。The outside air sucked from the front grill 7 as the vehicle V travels is guided to the space between the stiffener 20 of the bonnet 19 and the front bulkhead 22 (see FIG. 1), and the first air is guided to the first space. is introduced into the intake air introduction port 10 1 of the intake duct 10 is discharged from the first opening 10 2 through the inside of the first intake duct 10. Some of the discharged air from the first opening 10 2 of the first intake duct 10 second
While being introduced into the second opening 11 1 of the intake duct 11, the remainder of the intake air diffuses into the engine room 1 collides with the resonator chamber 21, the battery 17, the electronic control unit 18, distributor 23 (see FIG. 2 ) Is used to cool the heating element.
【００２５】このとき、第１吸気ダクト１０を通過する
吸気に含まれる異物は第３開口１０ 8 から排出される
が、第３開口１０8 から排出されなかった異物が第１吸
気ダクト１０の第１開口１０2 から排出されても、第１
吸気ダクト１０の第１開口１０ 2 と第２吸気ダクト１１
の第２開口１１1 とが分離されているため、その異物が
第２吸気ダクト１１に吸い込まれるのを防止してエアク
リーナ１３の目詰まりやウオータロックによるエンジン
Ｅのダメージを回避することができる。At this time, the air passes through the first intake duct 10.
Foreign matter contained in the intake air is 8Discharged from
Is the third opening 108Foreign matter not discharged from the
First opening 10 of air duct 10TwoEven if discharged from
First opening 10 of intake duct 10 TwoAnd the second intake duct 11
Second opening 11 of1Is separated from the
The air intake is prevented by being sucked into the second intake duct 11.
Engine due to clogging of LINA 13 and water lock
E damage can be avoided.
【００２６】また、仮に第１吸気ダクト１０および第２
吸気ダクト１１が開口を持たずに接続していると、第
１、第２吸気ダクト１０，１１内の空気の共鳴による吸
気騒音（１５０Ｈｚ以下の室内こもり音）が発生し易く
なるが、第１吸気ダクト１０および第２吸気ダクト１１
が第１開口１０2 および第２開口１１1 を介して分離し
ているため、共鳴周波数を高い側にシフトさせて前記室
内こもり音の発生を効果的に回避することができる。Also, if the first intake duct 10 and the second
If the intake duct 11 is connected without having an opening, intake noise (room noise of 150 Hz or less) due to resonance of air in the first and second intake ducts 10 and 11 is likely to be generated. Intake duct 10 and second intake duct 11
Since There has been separated through the first aperture 10 2 and the second opening 11 1, it is possible to effectively avoid the occurrence of the indoor muffled sound by shifting the resonance frequency to the higher side.
【００２７】更に、エンジンルーム１内の各種機器類を
メンテナンスすべくボンネット１９を上方に開いたと
き、ボンネット１９の下面に固定された第１吸気ダクト
１０がエンジンルーム１内に固定された第２吸気ダクト
１１から分離されるため、その第１吸気ダクト１０の下
方に配置されたバッテリ１７等のメンテナンスを容易に
行うことが可能になり、しかもエンジンルーム１側に第
１吸気ダクト１０の支持部を設ける必要がないために該
第１吸気ダクト１０のレウアウトの自由度が増加する。Further, when the bonnet 19 is opened upward for maintenance of various devices in the engine room 1, the first intake duct 10 fixed to the lower surface of the bonnet 19 becomes the second intake duct 10 fixed in the engine room 1. Since it is separated from the intake duct 11, maintenance of the battery 17 and the like disposed below the first intake duct 10 can be easily performed, and the support portion of the first intake duct 10 is provided on the engine room 1 side. Is not required, the degree of freedom of the first air intake duct 10 in the recess is increased.
【００２８】以上、本発明の実施例を詳述したが、本発
明はその要旨を逸脱しない範囲で種々の設計変更を行う
ことが可能である。Although the embodiment of the present invention has been described in detail, various design changes can be made in the present invention without departing from the gist thereof.
【００２９】例えば、請求項１〜４に記載された発明に
おいて、第１吸気ダクト１０および第２吸気ダクト１１
を一部材で構成し、その中間部に切欠を設けることによ
り第１開口１０2 および第２開口１１1 を形成しても良
く、また第１吸気ダクト１０および第２吸気ダクト１１
を二部材で構成した場合でも、第１、第２吸気ダクト１
０，１１の両方をエンジンルーム１内に固定しても良
い。For example, in the first to fourth aspects of the present invention, the first intake duct 10 and the second intake duct 11
Was constituted by a single member, may be formed a first opening 10 2 and the second opening 11 1 by providing a notch in the middle part, also the first intake duct 10 and the second intake duct 11
, The first and second intake ducts 1
Both 0 and 11 may be fixed in the engine room 1.
【００３０】[0030]
【発明の効果】以上のように請求項１に記載された発明
によれば、第１吸気ダクトの吸気導入口から第２吸気ダ
クトのエアクリーナ接続部に至る吸気通路が第１吸気ダ
クトの第１開口および第２吸気ダクトの第２開口におい
て分割されるので、吸気の低周波領域での共鳴を防止し
て室内こもり音を改善することができる。また前記分割
部から漏れた吸気によってエンジンルーム内の補機類の
冷却を促進することができるだけでなく、第１吸気ダク
トが異物等により閉塞されても、前記分割部から吸入し
た吸気を第２吸気ダクトを経てエアクリーナに導くこと
ができ、しかも第１吸気ダクトに吸入された塵や水等の
異物が第２吸気ダクトに流入するのを防止することがで
きる。As described above, according to the first aspect of the present invention, the intake passage from the intake port of the first intake duct to the air cleaner connection portion of the second intake duct is the first intake duct of the first intake duct. Since it is divided at the opening and the second opening of the second intake duct, it is possible to prevent the resonance of the intake air in a low frequency region and to improve the muffled indoor sound. The intake air leaked from the divided portion can not only promote the cooling of the auxiliary equipment in the engine room, but also can reduce the intake air sucked from the divided portion to the second even if the first intake duct is blocked by foreign matter or the like. It can be guided to the air cleaner via the intake duct, and furthermore, foreign substances such as dust and water sucked into the first intake duct can be prevented from flowing into the second intake duct.
【００３１】また請求項２に記載された発明によれば、
第１吸気ダクトの第１開口と第２吸気ダクトの第２開口
とが鈍角を以て交差するので、第１吸気ダクト吸気導入
口から吸い込まれて第１開口から排出された異物が第２
吸気ダクトの第２開口に直接吸い込まれるのを防止する
ことができる。According to the invention described in claim 2,
Since the first opening of the first intake duct and the second opening of the second intake duct intersect at an obtuse angle, foreign substances sucked from the first intake duct intake inlet and discharged from the first opening are removed by the second opening.
It is possible to prevent the air from being directly sucked into the second opening of the intake duct.
【００３２】また請求項３に記載された発明によれば、
第１吸気ダクトの吸気導入口から吸い込まれた塵や水等
の異物を、前記第１開口からだけでなく第３開口からも
排出して該異物が第２吸気ダクトに吸い込まれるのを確
実に防止することができるだけでなく、前記第３開口か
ら吸気の一部を流出させて補機類の冷却を促進すること
ができる。According to the third aspect of the present invention,
Foreign substances such as dust and water sucked from the intake inlet of the first intake duct are discharged not only from the first opening but also from the third opening to ensure that the foreign substances are sucked into the second intake duct. Not only can this be prevented, but also a part of the intake air can flow out from the third opening to promote cooling of accessories.
【００３３】また請求項４に記載された発明によれば、
前記第３開口が第１吸気ダクトの湾曲方向外側の壁面に
形成されているので、第１吸気ダクトに吸い込まれた異
物を外部に効果的に排出することができるだけでなく、
第３開口の近傍を通過する吸気によって笛を吹くような
騒音が発生するのを抑制することができる。According to the invention described in claim 4,
Since the third opening is formed on the outer wall surface of the first intake duct in the curved direction, not only can the foreign substances sucked into the first intake duct be effectively discharged to the outside,
It is possible to suppress the generation of noise such as a whistle caused by the intake air passing near the third opening.
【００３４】また請求項５に記載された発明によれば、
第１吸気ダクトをボンネットの下面に固定したので、ボ
ンネットを開いてエンジンルーム内のメンテナンスを行
う際に、第１吸気ダクトが邪魔になるのを防止すること
ができ、しかも第１吸気ダクトのレイアウトの自由度が
増加する。According to the invention described in claim 5,
Since the first intake duct is fixed to the lower surface of the hood, it is possible to prevent the first intake duct from being obstructed when the hood is opened and maintenance is performed in the engine room. In addition, the layout of the first intake duct The degree of freedom increases.
【図１】自動車のエンジンルームの側面図FIG. 1 is a side view of an engine room of an automobile.
【図２】図１の２方向矢視図FIG. 2 is a view in the direction of arrows in FIG. 1;
【図３】第１吸気ダクトの全体平面図FIG. 3 is an overall plan view of a first intake duct.
【図４】図３の４方向矢視図FIG. 4 is a view in the direction of arrows in FIG. 3;
【図５】図３の５−５線断面図FIG. 5 is a sectional view taken along line 5-5 in FIG. 3;
１ エンジンルーム １０ 第１吸気ダクト １０1 吸気導入口 １０2 第１開口 １０8 第３開口 １１ 第２吸気ダクト １１1 第２開口 １１2 エアクリーナ接続部 １３ エアクリーナ １９ ボンネット ａ 第１開口の方向 ｂ 第２開口の方向 Ｌ 軸線 α 鈍角DESCRIPTION OF SYMBOLS 1 Engine room 10 1st intake duct 10 1 Intake inlet 10 2 1st opening 10 8 3rd opening 11 2nd intake duct 11 1 2nd opening 11 2 Air cleaner connection part 13 Air cleaner 19 Bonnet a Direction of 1st opening b 1st 2 Opening direction L axis α obtuse angle
Claims (5)
れて吸気をエアクリーナ（１３）に導くエンジンの吸気
ダクトにおいて、 一端に車体前方に向けて開口する吸気導入口（１０1 ）
が形成された第１吸気ダクト（１０）と、一端にエアク
リーナ（１３）に接続されるエアクリーナ接続部（１１
2 ）が形成された第２吸気ダクト（１１）とを備えてな
り、第１吸気ダクト（１０）の他端に形成された第１開
口（１０2 ）から流出する吸気の一部を、第２吸気ダク
ト（１１）の他端に形成された第２開口（１１1 ）に供
給することを特徴とするエンジンの吸気ダクト。An intake duct (10 1 ) disposed in an engine room (1) of an automobile and guiding intake air to an air cleaner (13).
A first intake duct (10) formed with an air cleaner and an air cleaner connection part (11) connected at one end to an air cleaner (13).
2 ) formed with a second intake duct (11), and a part of intake air flowing out from a first opening (10 2 ) formed at the other end of the first intake duct (10) is (2) An intake duct for an engine, wherein the supply is supplied to a second opening (11 1 ) formed at the other end of the intake duct (11).
成された第１開口（１０2 ）の方向（ａ）と前記第２吸
気ダクト（１１）の他端に形成された第２開口（１
１1 ）の方向（ｂ）とが鈍角（α）を以て交差すること
を特徴とする、請求項１に記載のエンジンの吸気ダク
ト。 2. The direction (a) of a first opening (10 2 ) formed at the other end of the first intake duct (10) and a second direction formed at the other end of the second intake duct (11). Opening (1
1 1) and the direction (b) of is characterized by crossing with a obtuse angle (alpha), an intake duct for an engine according to claim 1.
１開口（１０2 ）よりも車体前方側に位置する第３開口
（１０8 ）を設けたことを特徴とする、請求項１または
２に記載のエンジンの吸気ダクト。3. The first intake duct (10) is provided with a third opening (10 8 ) located on the vehicle body front side with respect to the first opening (10 2 ). Or an intake duct of the engine according to 2.
軸線（Ｌ）を有しており、該第１吸気ダクト（１０）の
前記湾曲方向外側の壁面に前記第３開口（１０8 ）を形
成したことを特徴とする、請求項３に記載のエンジンの
吸気ダクト。4. The first intake duct (10) has a curved axis (L), and the third opening (10 8 ) is formed in a wall of the first intake duct (10) on the outside in the curved direction. The intake duct for an engine according to claim 3, wherein the intake duct is formed.
ット（１９）の下面に前記第１吸気ダクト（１０）を固
定したことを特徴とする、請求項１〜４の何れかに記載
のエンジンの吸気ダクト。5. The engine according to claim 1, wherein the first intake duct is fixed to a lower surface of a hood covering the engine room. Intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09587698A JP3676566B2 (en) | 1998-04-08 | 1998-04-08 | Engine intake duct structure for automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09587698A JP3676566B2 (en) | 1998-04-08 | 1998-04-08 | Engine intake duct structure for automobiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11294279A true JPH11294279A (en) | 1999-10-26 |
| JP3676566B2 JP3676566B2 (en) | 2005-07-27 |
Family
ID=14149552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09587698A Expired - Fee Related JP3676566B2 (en) | 1998-04-08 | 1998-04-08 | Engine intake duct structure for automobiles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3676566B2 (en) |
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| JP2004183514A (en) * | 2002-11-29 | 2004-07-02 | Inoac Corp | Duct for vehicle |
| JP2006027596A (en) * | 2004-07-12 | 2006-02-02 | Honda Motor Co Ltd | Automobile air intake system on bulkhead |
| JP2006044572A (en) * | 2004-08-06 | 2006-02-16 | Toyota Motor Corp | Intake system cooling structure |
| JP2006224874A (en) * | 2005-02-18 | 2006-08-31 | Nissan Motor Co Ltd | Part arrangement structure for fuel cell vehicle |
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| US20110017535A1 (en) * | 2004-07-12 | 2011-01-27 | Honda Motor Co., Ltd. | Automobile over-bulkhead air intake system |
| JP2012101792A (en) * | 2004-07-12 | 2012-05-31 | Honda Motor Co Ltd | Automobile over-bulkhead air intake system |
| CN100416077C (en) * | 2004-08-05 | 2008-09-03 | 铃木株式会社 | Engine air intake system structure |
| JP2006044572A (en) * | 2004-08-06 | 2006-02-16 | Toyota Motor Corp | Intake system cooling structure |
| JP4736461B2 (en) * | 2005-02-18 | 2011-07-27 | 日産自動車株式会社 | Fuel cell vehicle component arrangement structure |
| JP2006224874A (en) * | 2005-02-18 | 2006-08-31 | Nissan Motor Co Ltd | Part arrangement structure for fuel cell vehicle |
| JP2007308000A (en) * | 2006-05-18 | 2007-11-29 | Suzuki Motor Corp | Engine air-intake duct structure |
| US8205699B2 (en) | 2007-08-09 | 2012-06-26 | Honda Motor Co., Ltd. | Automotive vehicle having engine air guide passage |
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| 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 |
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| JP2015140787A (en) * | 2014-01-30 | 2015-08-03 | トヨタ自動車株式会社 | Intake structure of on-vehicle engine |
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| KR20190002911A (en) * | 2017-06-30 | 2019-01-09 | 강현웅 | Apparatus for increasing air intake of vehicle |
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