JP2000161160A - Intake duct of internal combustion engine - Google Patents
Intake duct of internal combustion engineInfo
- Publication number
- JP2000161160A JP2000161160A JP10341608A JP34160898A JP2000161160A JP 2000161160 A JP2000161160 A JP 2000161160A JP 10341608 A JP10341608 A JP 10341608A JP 34160898 A JP34160898 A JP 34160898A JP 2000161160 A JP2000161160 A JP 2000161160A
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- JP
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- Prior art keywords
- duct
- intake
- shaped portion
- porous material
- internal combustion
- Prior art date
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Abstract
(57)【要約】
【課題】 吸気騒音を一層低減し、空気流量を十分に確
保できるとともに、放射音を防止することができる内燃
機関の吸気ダクトを提供する。
【解決手段】 吸気ダクト１は、多孔質材ダクト５及び
樹脂ダクト６を備えている。多孔質材ダクト５の内径
は、多孔質ダクト５の先端から終端までほぼ同一に形成
されている。この多孔質材ダクト５は、例えば織布から
形成されている。樹脂ダクト６は、直管部６ａ，ファン
ネル形状部６ｃ及びディフューザ形状部６ｂからなって
いる。ファンネル形状部６ｃの内径は最も小さく形成さ
れている。ファンネル形状部６ｃの下流にはディフュー
ザ形状部６ｂが形成され、その内径はエアクリーナ２に
近づくにしたがって次第に拡径している。
(57) [Summary] To provide an intake duct of an internal combustion engine capable of further reducing intake noise, ensuring sufficient air flow, and preventing radiation noise. SOLUTION: An intake duct 1 includes a porous material duct 5 and a resin duct 6. The inner diameter of the porous material duct 5 is substantially the same from the front end to the end of the porous duct 5. The porous material duct 5 is formed of, for example, a woven fabric. The resin duct 6 includes a straight pipe portion 6a, a funnel-shaped portion 6c, and a diffuser-shaped portion 6b. The inner diameter of the funnel-shaped portion 6c is formed to be the smallest. A diffuser-shaped portion 6b is formed downstream of the funnel-shaped portion 6c, and its inner diameter gradually increases as approaching the air cleaner 2.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、外気から空気を吸
入してエアクリーナへ導く内燃機関の吸気ダクトに関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake duct of an internal combustion engine that draws air from outside air and guides it to an air cleaner.
【０００２】[0002]
【従来の技術】ガソリンエンジンやディーゼルエンジン
等の内燃機関の吸気系から発生する吸気騒音を低減する
ことが車室内全体の騒音を低くする上で重要である。2. Description of the Related Art It is important to reduce intake noise generated from an intake system of an internal combustion engine such as a gasoline engine or a diesel engine in order to reduce the noise in the entire vehicle compartment.
【０００３】この吸気騒音を低減するために、例えば織
布製の多孔質材ダクトや樹脂製の多孔質材の管による吸
気ダクトを用いることが知られている。この多孔質材ダ
クトが、例えば特開平５−１２６００２号等に提案され
ている。この多孔質材ダクトは、円筒状の吸気ダクトの
側面に多数の孔を形成し、多孔質材による無反射端効果
を利用して吸気騒音を低減している。[0003] In order to reduce the intake noise, it is known to use, for example, a porous duct made of a woven cloth or a duct made of a porous material made of a resin. This porous material duct is proposed in, for example, Japanese Patent Laid-Open No. 5-126002. In this porous material duct, a large number of holes are formed on the side surface of the cylindrical intake duct, and intake noise is reduced by using the non-reflective end effect of the porous material.
【０００４】また、ディフューザ型吸気ダクトが特開昭
５５−１２５３５３号等に提案されている。図３に示す
ように、この吸気ダクト１１はエアクリーナ１２に近づ
くにしたがって次第に内径を大きく形成されている。更
に、この吸気ダクト１１を多孔質材の管にて形成する
と、より一層吸気騒音が低減されることが知られてい
る。[0004] A diffuser-type intake duct has been proposed in Japanese Patent Application Laid-Open No. 55-125353. As shown in FIG. 3, the inside diameter of the intake duct 11 gradually increases as it approaches the air cleaner 12. Further, it is known that when the intake duct 11 is formed of a pipe made of a porous material, intake noise is further reduced.
【０００５】[0005]
【発明が解決しようとする課題】ところが、この織布製
の多孔質材の管にて形成したディフューザ型吸気ダクト
は吸気ダクトの内面が粗いため、通常の吸気ダクトに比
べて通気抵抗が大幅に低下する。その結果、エアクリー
ナへの空気流量を十分に確保することができないおそれ
がある。更に、織布製の多孔質材ダクトではエアクリー
ナに近づくにしたがって内径が拡径しているので、織布
の織り目が次第に粗くなってしまう。その結果、粗くな
った織布の織り目から吸入される空気によって放射音が
発生するという問題点があった。However, the diffuser-type intake duct formed of the woven porous material pipe has a rough inner surface of the intake duct, so that the air-flow resistance is much larger than that of a normal intake duct. descend. As a result, there is a possibility that a sufficient flow rate of air to the air cleaner cannot be secured. Further, in the porous material duct made of a woven fabric, the inner diameter increases as approaching the air cleaner, so that the weave of the woven fabric gradually becomes coarse. As a result, there is a problem that radiated sound is generated by air inhaled from the coarse weave of the woven fabric.
【０００６】本発明の目的は、吸気騒音を一層低減し、
空気流量を十分に確保できるとともに、放射音を防止す
ることができる内燃機関の吸気ダクトを提供することに
ある。An object of the present invention is to further reduce intake noise,
It is an object of the present invention to provide an intake duct for an internal combustion engine that can ensure a sufficient air flow rate and prevent radiation noise.
【０００７】[0007]
【課題を解決するための手段】上記問題点を解決するた
めに、請求項１に記載の発明は、外気から空気を吸入し
てエアクリーナへ導く内燃機関の吸気ダクトにおいて、
多孔質材の管からなる上流側ダクトと、前記上流ダクト
の下流にて、最も小さい内径を有するファンネル形状部
及びそのファンネル形状部の下流にて、その内径が前記
エアクリーナに近づくにしたがって次第に拡径するディ
フューザ形状部とを備えた管からなる下流側ダクトとを
備えたことを要旨とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 is directed to an intake duct of an internal combustion engine that draws air from outside air and guides the air to an air cleaner.
An upstream duct made of a tube of a porous material, a funnel-shaped portion having the smallest inside diameter downstream of the upstream duct, and a downstream diameter of the funnel-shaped portion gradually increasing as the inside diameter approaches the air cleaner. And a downstream duct formed of a pipe having a diffuser-shaped portion.
【０００８】請求項２に記載の発明は、請求項１に記載
の内燃機関の吸気ダクトにおいて、前記上流側ダクト
は、織布製の多孔質材ダクトであって、先端から終端ま
でほぼ同一の内径を備えたことを要旨とする。According to a second aspect of the present invention, in the intake duct of the internal combustion engine according to the first aspect, the upstream duct is a woven porous material duct, and is substantially the same from the front end to the end. The gist is to have an inner diameter.
【０００９】請求項３に記載の発明は、請求項１に記載
の内燃機関の吸気ダクトにおいて、前記下流側ダクト
は、樹脂製ダクトであって、その内面は滑らかに形成さ
れたことを要旨とする。According to a third aspect of the present invention, in the intake duct of the internal combustion engine according to the first aspect, the downstream duct is a resin duct, and an inner surface thereof is formed smoothly. I do.
【００１０】請求項１に記載の発明によれば、多孔質材
の管よりなる上流側ダクトの下流にファンネル形状部及
びディフューザ形状部を有する下流側ダクトを設けたの
で、ファンネル形状部からエアクリーナに十分な空気流
量を供給することができる。また、ファンネル形状部は
最も小さい内径を有しているため、吸気騒音を低減する
ことができる。According to the first aspect of the present invention, since the downstream duct having the funnel-shaped portion and the diffuser-shaped portion is provided downstream of the upstream duct made of a porous material tube, the air-cleaner is transferred from the funnel-shaped portion to the air cleaner. A sufficient air flow rate can be supplied. Further, since the funnel-shaped portion has the smallest inner diameter, intake noise can be reduced.
【００１１】また、多孔質材の管よりなる上流側ダクト
の内径をこの上流側ダクトの位置に相当する従来の多孔
質材ダクトの内径より大きくしても悪化しないため、上
流側ダクトの内径を大きくでき、上流側ダクト内での通
気抵抗の低下を緩和することができる。Further, since the inner diameter of the upstream duct made of a porous material pipe is not deteriorated even if it is larger than the inner diameter of the conventional porous material duct corresponding to the position of the upstream duct, the inner diameter of the upstream duct is reduced. It is possible to increase the size, and it is possible to alleviate a decrease in airflow resistance in the upstream duct.
【００１２】請求項２に記載の発明によれば、上流側ダ
クトの織布は、その縦糸及び横糸の間隔をその先端から
終端まで均一にすることができる。従って、織布の織り
目が粗くならず、織り目から吸入される空気に起因する
放射音は発生しない。According to the second aspect of the invention, in the woven fabric of the upstream duct, the interval between the warp and the weft can be made uniform from the leading end to the trailing end. Therefore, the texture of the woven fabric is not coarse, and no radiated sound due to the air sucked from the texture is generated.
【００１３】請求項３に記載の発明によれば、下流側ダ
クトは、樹脂製ダクトであって、その内面が滑らかに形
成されているので通気抵抗が小さい。また、下流側ダク
トの外側から下流側ダクト内に空気が流入することはな
い。According to the third aspect of the present invention, the downstream duct is a resin duct, and its inner surface is formed smoothly, so that the ventilation resistance is small. Also, air does not flow into the downstream duct from outside the downstream duct.
【００１４】[0014]
【発明の実施の形態】以下、本発明を具体化した内燃機
関の吸気ダクトの一実施形態を図１及び図２に従って説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an intake duct of an internal combustion engine embodying the present invention will be described below with reference to FIGS.
【００１５】図１に示すように、内燃機関の吸気系は吸
気ダクト１，エアクリーナ２及びエアクリーナホース３
を備え、空気は吸気ダクト１、エアクリーナ２及びエア
クリーナホース３の順に流れるようになっている。As shown in FIG. 1, the intake system of the internal combustion engine includes an intake duct 1, an air cleaner 2, and an air cleaner hose 3.
The air flows in the order of the intake duct 1, the air cleaner 2, and the air cleaner hose 3.
【００１６】吸気ダクト１は、吸気口部材４，多孔質材
ダクト５及び樹脂ダクト６から構成されている。吸気口
部材４は、吸気ダクト１の先端部に設けられている。吸
気口部材４は、管状に形成され、その先端に吸気口４ａ
を備えている。そして、この吸気口４ａから主に空気が
流入する。吸気口部材４は、硬質樹脂材料、例えばポリ
エチレンから形成されている。吸気口部材４の下流には
上流側ダクトとしての多孔質材ダクト５が設けられてい
る。The intake duct 1 includes an intake port member 4, a porous material duct 5, and a resin duct 6. The intake port member 4 is provided at a distal end of the intake duct 1. The suction port member 4 is formed in a tubular shape, and has a suction port 4a at its tip.
It has. Then, air mainly flows in from the intake port 4a. The inlet member 4 is formed of a hard resin material, for example, polyethylene. A porous material duct 5 as an upstream duct is provided downstream of the intake member 4.
【００１７】多孔質材ダクト５は、管状に形成され、そ
の内径は多孔質ダクトの先端から終端までほぼ同一に形
成されている。また、この多孔質材ダクト５は、例えば
織布から形成されている。多孔質材ダクト５の下流に
は、下流側ダクトとしての樹脂ダクト６が設けられてい
る。The porous material duct 5 is formed in a tubular shape, and the inner diameter thereof is substantially the same from the front end to the end of the porous duct. The porous material duct 5 is formed of, for example, a woven fabric. Downstream of the porous material duct 5, a resin duct 6 as a downstream duct is provided.
【００１８】樹脂ダクト６は、管状に形成され、その内
面は滑らかに形成されている。樹脂ダクトの長さは、吸
気ダクト１の全長Ｌのほぼ１／２を備えている。樹脂ダ
クト６は、直管部６ａ，ファンネル形状部６ｃ及びディ
フューザ形状部６ｂからなっている。また、樹脂ダクト
６は硬質樹脂材料、例えばポリエチレンから形成されて
いる。The resin duct 6 is formed in a tubular shape, and its inner surface is formed smoothly. The length of the resin duct is approximately の of the total length L of the intake duct 1. The resin duct 6 includes a straight pipe portion 6a, a funnel-shaped portion 6c, and a diffuser-shaped portion 6b. The resin duct 6 is formed of a hard resin material, for example, polyethylene.
【００１９】図２に示すように、直管部６ａは樹脂ダク
ト６の上流部に形成されている。直管部６ａの上流端
は、多孔質材ダクト５の下流端と同一形状に形成されて
おり、ファンネル形状部６ｃの上流端は直管部６ａの下
流端と同一の形状に形成されている。また、ファンネル
形状部６ｃの下流部の内径は、吸気ダクト１のファンネ
ル形状部６ｃ以外の内径と比較して最も小さく形成され
ている。ファンネル形状部６ｃの下流にはディフューザ
形状部６ｂが形成されている。As shown in FIG. 2, the straight pipe portion 6a is formed upstream of the resin duct 6. The upstream end of the straight pipe portion 6a is formed in the same shape as the downstream end of the porous material duct 5, and the upstream end of the funnel-shaped portion 6c is formed in the same shape as the downstream end of the straight pipe portion 6a. . The inner diameter of the downstream portion of the funnel-shaped portion 6c is formed to be the smallest as compared with the inner diameter of the intake duct 1 other than the funnel-shaped portion 6c. A diffuser-shaped portion 6b is formed downstream of the funnel-shaped portion 6c.
【００２０】ディフューザ形状部６ｂは、管状に形成さ
れるとともに、エアクリーナ２に近づくにしたがって次
第に拡径形成されている。上記実施形態の内燃機関の吸
気ダクト１によれば、以下のような特徴を得ることがで
きる。The diffuser-shaped portion 6b is formed in a tubular shape, and has a gradually increasing diameter as it approaches the air cleaner 2. According to the intake duct 1 of the internal combustion engine of the above embodiment, the following features can be obtained.
【００２１】（１）上記実施形態では、ファンネル形状
部６ｃに最も小さい内径を形成したため、吸気騒音を低
減でき、且つファンネル形状部６ｃからエアクリーナ２
に十分な空気流量を供給することができる。(1) In the above embodiment, since the smallest inner diameter is formed in the funnel-shaped portion 6c, the intake noise can be reduced, and the air cleaner 2 can be removed from the funnel-shaped portion 6c.
Enough air flow can be supplied.
【００２２】また、樹脂ダクト６の上流側に設けた多孔
質材ダクト５の内径を同多孔質材ダクト５の位置に相当
する従来の多孔質材ダクト１１の内径より大きくしても
吸気騒音は悪化しない。その結果、多孔質材ダクト１１
の内径を大きくして多孔質材ダクト５内での通気抵抗を
緩和することができる。Further, even if the inner diameter of the porous material duct 5 provided on the upstream side of the resin duct 6 is made larger than the inner diameter of the conventional porous material duct 11 corresponding to the position of the porous material duct 5, the intake noise is reduced. Does not worsen. As a result, the porous material duct 11
Can be increased to reduce the airflow resistance in the porous material duct 5.
【００２３】（２）上記実施形態では、多孔質材ダクト
５は同一の内径に形成することができるので、織布を構
成する縦糸及び横糸の間隔をその先端から終端まで均一
にすることができる。(2) In the above embodiment, since the porous material ducts 5 can be formed to have the same inner diameter, the interval between the warp and the weft constituting the woven fabric can be made uniform from the leading end to the trailing end. .
【００２４】従って、織布の織り目は粗くならず、織り
目から吸入される空気に起因する放射音を防止すること
ができる。 （３）上記実施形態では、ファンネル形状部６ｃとディ
フューザ形状部６ｂよりなる樹脂ダクト６をエアクリー
ナ２側に設けた。Accordingly, the texture of the woven fabric is not coarse, and radiation noise caused by air sucked from the texture can be prevented. (3) In the above embodiment, the resin duct 6 including the funnel-shaped portion 6c and the diffuser-shaped portion 6b is provided on the air cleaner 2 side.
【００２５】従って、樹脂ダクト６の外側から樹脂ダク
ト６内に空気が流入することはない。その結果、従来の
織布製の吸気ダクト１１のように、エアクリーナ１２側
にて粗くなった織布の織り目から吸入される空気に起因
する放射音は発生しない。Therefore, air does not flow into the resin duct 6 from outside the resin duct 6. As a result, unlike the conventional air intake duct 11 made of woven fabric, no radiated sound is generated due to the air taken in from the coarse weave of the woven fabric on the air cleaner 12 side.
【００２６】（４）上記実施形態では、樹脂ダクト６の
ディフューザ形状部６ｂは、その内面が滑らかに形成さ
れている。その結果、従来のディフューザ型多孔質材ダ
クト１１に比較して通気抵抗がより小さく、エアクリー
ナ２への空気流量を十分に確保することができる。(4) In the above embodiment, the inner surface of the diffuser-shaped portion 6b of the resin duct 6 is formed smoothly. As a result, the airflow resistance is smaller than that of the conventional diffuser-type porous material duct 11, and the flow rate of air to the air cleaner 2 can be sufficiently ensured.
【００２７】（５）上記実施形態では、樹脂ダクト６の
長さは吸気ダクト１の全長Ｌのほぼ１／２に形成されて
いる。樹脂ダクト６の長さを全長Ｌのほぼ１／２にする
ことによって吸気騒音の原因となる周波数の音波の共鳴
が吸気ダクト１内で低減する。その結果、吸気騒音が低
減する。(5) In the above embodiment, the length of the resin duct 6 is formed to be approximately one half of the entire length L of the intake duct 1. By making the length of the resin duct 6 approximately １ ／ of the total length L, the resonance of sound waves having a frequency that causes intake noise is reduced in the intake duct 1. As a result, intake noise is reduced.
【００２８】なお、本発明の実施形態は以下のように変
更してもよい。 ○吸気口部材４，樹脂ダクト６はポリエチエン以外の硬
質樹脂材料、又は金属材料から形成してもよい。The embodiment of the present invention may be modified as follows. The intake port member 4 and the resin duct 6 may be formed of a hard resin material other than polyethylene or a metal material.
【００２９】○多孔質材ダクト５は織布以外、例えば硬
質樹脂材料又は金属材料から形成してもよい。 ○樹脂ダクト６は吸気ダクト１の全長Ｌのほぼ１／２の
長さに設定したが、１／３〜２／３の範囲に設定しても
よい。The porous material duct 5 may be formed of a material other than woven fabric, for example, a hard resin material or a metal material. The resin duct 6 is set to have a length approximately equal to 1/2 of the total length L of the intake duct 1, but may be set to a range of 1/3 to 2/3.
【００３０】○吸気ダクト１又はエアクリーナ２に吸気
音低減用のレゾネータを設けてもよい。 ○吸気口部材４に代えて、多孔質材ダクト５に吸気口を
形成してもよい。The intake duct 1 or the air cleaner 2 may be provided with a resonator for reducing intake noise. In place of the inlet member 4, an inlet may be formed in the porous material duct 5.
【００３１】このようにした場合にも、前記実施形態に
記載の特徴に同様な特徴を得ることができる。次に、前
記実施形態及び別例から把握できる請求項に記載した発
明以外の技術的思想について、それらの効果と共に以下
に記載する。In this case, the same features as those described in the above embodiment can be obtained. Next, technical ideas other than the inventions described in the claims that can be grasped from the embodiment and other examples will be described below together with their effects.
【００３２】（１）請求項１に記載の内燃機関の吸気ダ
クトにおいて、前記下流側ダクトは、ポリエチレンから
形成されていることを特徴とする内燃機関の吸気ダク
ト。従って、この（１）に記載の発明によれば、安価に
製造できる。(1) The intake duct for an internal combustion engine according to claim 1, wherein the downstream duct is made of polyethylene. Therefore, according to the invention described in (1), it can be manufactured at low cost.
【００３３】（２）請求項１に記載の内燃機関の吸気ダ
クトにおいて、前記下流側ダクトの長さは、吸気ダクト
全体の長さのほぼ１／２であることを特徴とする内燃機
関の吸気ダクト。(2) The intake duct for an internal combustion engine according to claim 1, wherein the length of the downstream duct is substantially half the length of the entire intake duct. duct.
【００３４】従って、この（２）に記載の発明によれ
ば、吸気騒音を低減できる。Therefore, according to the invention described in (2), intake noise can be reduced.
【００３５】[0035]
【発明の効果】以上詳述したように、請求項１に記載の
発明によれば、吸気音を低減するとともに、通気抵抗を
緩和し、空気流量を十分に確保することができる。As described in detail above, according to the first aspect of the present invention, it is possible to reduce the intake noise, reduce the ventilation resistance, and sufficiently secure the air flow rate.
【００３６】請求項２に記載の発明によれば、請求項１
に記載の発明の効果に加えて、放射音を防止することが
できる。請求項３に記載の発明によれば、請求項１に記
載の発明の効果に加えて、エアクリーナ側への空気流量
を更に十分に確保でき、且つ放射音を防止することがで
きる。According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in (1), radiated sound can be prevented. According to the third aspect of the present invention, in addition to the effects of the first aspect of the present invention, it is possible to further sufficiently secure the air flow rate to the air cleaner side and prevent radiation noise.
【図１】 本実施形態の内燃機関の吸気ダクトの斜視
図。FIG. 1 is a perspective view of an intake duct of an internal combustion engine according to an embodiment.
【図２】 本実施形態の内燃機関の吸気ダクトの説明
図。FIG. 2 is an explanatory diagram of an intake duct of the internal combustion engine of the embodiment.
【図３】 従来の内燃機関の吸気ダクトの説明図。FIG. 3 is an explanatory view of an intake duct of a conventional internal combustion engine.
１…吸気ダクト、２…エアクリーナ、５…上流側ダクト
としての多孔質材ダクト、６…下流側ダクトとしての樹
脂ダクト、６ａ…直管部、６ｂ…ディフューザ形状部、
６ｃ…ファンネル形状部。DESCRIPTION OF SYMBOLS 1 ... Intake duct, 2 ... Air cleaner, 5 ... Porous material duct as upstream duct, 6 ... Resin duct as downstream duct, 6a ... Straight pipe part, 6b ... Diffuser shape part,
6c: Funnel-shaped part.
Claims (3)
導く内燃機関の吸気ダクトにおいて、 多孔質材の管からなる上流側ダクトと、 前記上流ダクトの下流にて、最も小さい内径を有するフ
ァンネル形状部及びそのファンネル形状部の下流にて、
その内径が前記エアクリーナに近づくにしたがって次第
に拡径するディフューザ形状部とを備えた管からなる下
流側ダクトとを備えた内燃機関の吸気ダクト。1. An intake duct for an internal combustion engine that draws air from outside air and guides the air to an air cleaner, comprising: an upstream duct made of a porous material tube; and a funnel-shaped portion having a smallest inside diameter downstream of the upstream duct. And downstream of the funnel-shaped part,
And a downstream duct comprising a pipe having a diffuser-shaped portion whose inner diameter gradually increases as approaching the air cleaner.
において、 前記上流側ダクトは、織布製の多孔質材ダクトであっ
て、先端から終端までほぼ同一の内径を備えたことを特
徴とする内燃機関の吸気ダクト。2. The intake duct for an internal combustion engine according to claim 1, wherein the upstream duct is a porous material duct made of woven fabric, and has substantially the same inner diameter from the front end to the end. The intake duct of the internal combustion engine.
において、 前記下流側ダクトは、樹脂製ダクトであって、その内面
は滑らかに形成されたことを特徴とする内燃機関の吸気
ダクト。3. The intake duct for an internal combustion engine according to claim 1, wherein the downstream duct is a resin duct, and an inner surface thereof is formed smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34160898A JP3341691B2 (en) | 1998-12-01 | 1998-12-01 | Internal combustion engine intake duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34160898A JP3341691B2 (en) | 1998-12-01 | 1998-12-01 | Internal combustion engine intake duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000161160A true JP2000161160A (en) | 2000-06-13 |
| JP3341691B2 JP3341691B2 (en) | 2002-11-05 |
Family
ID=18347405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34160898A Expired - Fee Related JP3341691B2 (en) | 1998-12-01 | 1998-12-01 | Internal combustion engine intake duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3341691B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021657A (en) * | 2000-07-06 | 2002-01-23 | Marugo Rubber Ind Co Ltd | Air intake duct for internal combustion engine and method of manufacturing the same |
| JP2006090252A (en) * | 2004-09-27 | 2006-04-06 | Sekiso:Kk | Air intake duct |
| JP2010002147A (en) * | 2008-06-23 | 2010-01-07 | Tigers Polymer Corp | Ventilating duct |
| JP2023005371A (en) * | 2021-06-29 | 2023-01-18 | 株式会社セキソー | Duct for vehicle |
-
1998
- 1998-12-01 JP JP34160898A patent/JP3341691B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021657A (en) * | 2000-07-06 | 2002-01-23 | Marugo Rubber Ind Co Ltd | Air intake duct for internal combustion engine and method of manufacturing the same |
| JP2006090252A (en) * | 2004-09-27 | 2006-04-06 | Sekiso:Kk | Air intake duct |
| JP2010002147A (en) * | 2008-06-23 | 2010-01-07 | Tigers Polymer Corp | Ventilating duct |
| JP2023005371A (en) * | 2021-06-29 | 2023-01-18 | 株式会社セキソー | Duct for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3341691B2 (en) | 2002-11-05 |
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