JP2008133771A - Muffling device - Google Patents

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JP2008133771A
JP2008133771A JP2006320433A JP2006320433A JP2008133771A JP 2008133771 A JP2008133771 A JP 2008133771A JP 2006320433 A JP2006320433 A JP 2006320433A JP 2006320433 A JP2006320433 A JP 2006320433A JP 2008133771 A JP2008133771 A JP 2008133771A
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wall
piece
communication pipe
intake duct
silencer
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JP4731452B2 (en
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Akihiro Osaki
明宏 大崎
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a muffling device capable of changing target frequencies of both Helmholtz type muffler and side branch type muffler by newly providing one metal mold. <P>SOLUTION: The muffling device 10 has the Helmholtz type muffler 20 provided with a resonance chamber 20a comprising a space surrounded by an intake duct formation wall 21 and a shutting off wall 22 and a communication part 20b constituted by a communication pipe 23; and the side branch type muffler 30 constituted by a cylindrical wall 31 with a bottom, and is constituted by first, second and third pieces 11, 12, 13 separately formed and integrated. On the first piece 11, the intake duct formation wall 21, a part 22a of the shutting wall 22, at least a part 23a of the communication pipe 23 and a part 31a of the cylindrical wall 31 with a bottom are formed. On the second piece 12, a part 22b of the shutting wall 22, a remaining portion 23b of the communication pipe 23 and a remaining portion of the cylindrical wall 31 with a bottom are formed. On the third piece 13, a remaining portion 22c of the shutting wall 22 is formed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両の吸気ダクトに設けられる消音装置に関する。   The present invention relates to a silencer provided in an intake duct of a vehicle.

実開平６−５３７５６号公報は、ヘルムホルツタイプ消音器の共鳴室内にサイドブランチタイプ消音器を突出させた消音装置を開示している。ヘルムホルツタイプ消音器の連通部を構成する連通管と、ヘルムホルツタイプ消音器の共鳴室を構成する箱状の中空成形体と、サイドブランチタイプ消音器を構成する有底筒状壁とは、それぞれ別体に形成されている。   Japanese Utility Model Publication No. 6-53756 discloses a silencer in which a side branch type silencer is protruded into a resonance chamber of a Helmholtz type silencer. The communication pipe that forms the communication part of the Helmholtz type silencer, the box-shaped hollow molded body that constitutes the resonance chamber of the Helmholtz type silencer, and the bottomed cylindrical wall that constitutes the side branch type silencer are different from each other. Formed in the body.

しかし、上記公報開示の消音装置には、つぎの問題点がある。
ヘルムホルツタイプ消音器にて消音する周波数（ターゲット周波数）を変更する場合、連通管の形状（長さ、径）、中空成形体の形状のいずれか少なくとも１つを変えなければならない。また、サイドブランチタイプ消音器にて消音する周波数（ターゲット周波数）を変更する場合、有底筒状壁の形状（長さ、径）を変えなければならない。
そのため、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更するためには、少なくとも２つ以上の金型を新設しなければならず、コスト上不利である。
実開平６−５３７５６号公報 However, the silencer disclosed in the above publication has the following problems.
When changing the frequency (target frequency) to be silenced by the Helmholtz type silencer, at least one of the shape (length, diameter) of the communication tube and the shape of the hollow molded body must be changed. Moreover, when changing the frequency (target frequency) to be silenced by the side branch type silencer, the shape (length, diameter) of the bottomed cylindrical wall must be changed.
Therefore, in order to change the target frequency of both the Helmholtz type silencer and the side branch type silencer, at least two molds must be newly installed, which is disadvantageous in terms of cost.
Japanese Utility Model Publication No. 6-53756

本発明の目的は、１つの金型を新設することでヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更できる消音装置を提供することにある。   An object of the present invention is to provide a silencer capable of changing the target frequencies of both a Helmholtz type silencer and a side branch type silencer by newly installing one mold.

上記目的を達成する本発明はつぎの通りである。
（１） （ａ）吸気ダクトの一部を形成する吸気ダクト形成壁と大気と遮断する遮断壁とで囲まれる空間からなる共鳴室と、前記吸気ダクト内と前記共鳴室とを連通させる連通管を前記吸気ダクト形成壁から前記共鳴室内に延びて設けることで構成される連通部と、を備えるヘルムホルツタイプ消音器と、
（ｂ）前記吸気ダクト形成壁から前記共鳴室内に突出する有底筒状壁にて構成されるサイドブランチタイプ消音器と、
を有し、別々に形成されて一体にされる第１、第２、第３のピースで構成される消音装置であって、
前記第１のピースに、前記吸気ダクト形成壁と、前記遮断壁の一部と、前記連通管の少なくとも一部と、前記有底筒状壁の一部が形成されており、
前記第２のピースに、前記遮断壁の一部とは異なるさらなる一部と、前記第１のピースに前記連通管の一部のみが形成されている場合には前記連通管の残余の部分と、前記有底筒状壁の残余の部分が形成されており、
前記第３のピースに、前記遮断壁の残余の部分が形成されている、消音装置。 The present invention for achieving the above object is as follows.
(1) (a) A resonance chamber composed of a space surrounded by an intake duct forming wall that forms a part of the intake duct and a blocking wall that blocks the atmosphere, and a communication pipe that connects the inside of the intake duct and the resonance chamber A Helmholtz type silencer comprising: a communication portion configured to extend from the intake duct forming wall into the resonance chamber; and
(B) a side branch type silencer configured with a bottomed cylindrical wall protruding into the resonance chamber from the intake duct forming wall;
A silencer composed of first, second, and third pieces that are separately formed and united,
In the first piece, the intake duct forming wall, a part of the blocking wall, at least a part of the communication pipe, and a part of the bottomed cylindrical wall are formed,
A further part different from a part of the blocking wall on the second piece, and a remaining part of the communication pipe when only a part of the communication pipe is formed on the first piece; The remaining portion of the bottomed cylindrical wall is formed,
The silencer, wherein the remaining part of the blocking wall is formed on the third piece.

上記（１）の消音装置によれば、第１のピースに、吸気ダクト形成壁と、遮断壁の一部と、連通管の少なくとも一部と、有底筒状壁の一部が形成されており、第２のピースに、遮断壁の一部とは異なるさらなる一部と、第１のピースに連通管の一部のみが形成されている場合には連通管の残余の部分と、有底筒状壁の残余の部分が形成されており、第３のピースに、遮断壁の残余の部分が形成されている。そのため、第２のピースに形成される連通管および有底筒状壁の残余の部分の長さを変更することで、連通管の長さと有底筒状壁の長さを変更することができ、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更することができる。したがって、１つの金型を新設することで（第２のピース成形用の金型のみを新設することで）、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更できる。   According to the silencer of (1) above, the first piece is formed with the intake duct forming wall, a part of the blocking wall, at least a part of the communication pipe, and a part of the bottomed cylindrical wall. The second piece has a further part different from a part of the blocking wall, and if the first piece has only a part of the communication pipe, the remaining part of the communication pipe has a bottom. The remaining part of the cylindrical wall is formed, and the remaining part of the blocking wall is formed on the third piece. Therefore, the length of the communication pipe and the length of the bottomed cylindrical wall can be changed by changing the length of the remaining part of the communication pipe and the bottomed cylindrical wall formed in the second piece. The target frequency of both the Helmholtz type silencer and the side branch type silencer can be changed. Therefore, by newly installing one mold (by newly providing only the second piece molding mold), it is possible to change the target frequencies of both the Helmholtz type silencer and the side branch type silencer.

図１〜図４は、本発明実施例の消音装置を示している。
本発明実施例の消音装置１０は、図２に示すように、自動車用内燃機関への吸気ダクト４０に設けられている。吸気ダクト４０は、自動車用内燃機関の吸気流れ方向上流に配置されるダクト（ホース）である。吸気ダクト４０は、図示略のエアクリーナの上流側のダクトであってもよく、図示略のエアクリーナの下流側のダクトであってもよい。
消音装置１０は、ヘルムホルツタイプ消音器２０と、サイドブランチタイプ消音器３０と、を有する。 1 to 4 show a silencer of an embodiment of the present invention.
As shown in FIG. 2, the silencer 10 of the embodiment of the present invention is provided in an intake duct 40 for an automobile internal combustion engine. The intake duct 40 is a duct (hose) disposed upstream of the internal combustion engine for automobiles in the intake flow direction. The intake duct 40 may be a duct on the upstream side of an air cleaner (not shown) or a duct on the downstream side of an air cleaner (not shown).
The silencer 10 includes a Helmholtz type silencer 20 and a side branch type silencer 30.

ヘルムホルツタイプ消音器２０は、共鳴室２０ａと、連通部２０ｂと、を備える。
共鳴室２０ａは、吸気ダクト４０の一部を形成する吸気ダクト形成壁２１と、大気と遮断する遮断壁２２とで囲まれる空間からなる。
連通部２０ｂは、吸気ダクト４０内と共鳴室２０ａとを連通させる連通管２３を吸気ダクト形成壁２１から共鳴室２０ａ内に延びて設けることで構成される。連通部２０ｂは、連通管２３の内側に位置する部分である。連通管２３は、吸気ダクト４０内を流れる吸気の流れ方向と直交する方向に、直線状または略直線状に延びている。 The Helmholtz type silencer 20 includes a resonance chamber 20a and a communication portion 20b.
The resonance chamber 20a includes a space surrounded by an intake duct forming wall 21 that forms a part of the intake duct 40 and a blocking wall 22 that blocks the atmosphere.
The communication portion 20b is configured by providing a communication pipe 23 that allows the inside of the intake duct 40 and the resonance chamber 20a to extend from the intake duct forming wall 21 into the resonance chamber 20a. The communication part 20 b is a part located inside the communication pipe 23. The communication pipe 23 extends linearly or substantially linearly in a direction orthogonal to the flow direction of the intake air flowing through the intake duct 40.

サイドブランチタイプ消音器３０は、吸気ダクト形成壁２１から共鳴室２０ａ内に突出する有底筒状壁３１にて構成される。有低筒状壁３１は、吸気ダクト形成壁２１から共鳴室２０ａ内に、吸気ダクト４０内を流れる吸気の流れ方向と直交する方向またはほぼ直交する方向に直線状または略直線状に突出している。有底筒状壁３１は、吸気ダクト４０内を流れる吸気の流れ方向で連通管２３が設けられる部位とは異なる部位に設けられている。有底筒状壁３１と遮断壁２２との間には空間があり、有底筒状壁３１は遮断壁２２に非接触とされている。有底筒状壁３１の内径と連通管２３の内径とは同じであってもよく、異なっていてもよい。   The side branch type silencer 30 includes a bottomed cylindrical wall 31 protruding from the intake duct forming wall 21 into the resonance chamber 20a. The low-cylindrical wall 31 projects linearly or substantially linearly from the intake duct forming wall 21 into the resonance chamber 20a in a direction perpendicular to or substantially perpendicular to the flow direction of the intake air flowing through the intake duct 40. . The bottomed cylindrical wall 31 is provided at a site different from the site where the communication pipe 23 is provided in the flow direction of the intake air flowing through the intake duct 40. There is a space between the bottomed cylindrical wall 31 and the blocking wall 22, and the bottomed cylindrical wall 31 is not in contact with the blocking wall 22. The inner diameter of the bottomed cylindrical wall 31 and the inner diameter of the communication pipe 23 may be the same or different.

消音装置１０は、図１に示すように、それぞれ別々に形成されて一体にされる第１〜第３のピース１１，１２，１３を備えている。
第１のピース１１には、吸気ダクト形成壁２１と、遮断壁２２の一部２２ａと、連通管２３の少なくとも一部２３ａと、有底筒状壁３１の一部３１ａとが、形成されている。
第２のピース１２には、遮断壁２２の前記一部２２ａとは異なるさらなる一部２２ｂと、第１のピース１１に連通管２３の一部のみが形成されている場合には連通管２３の残余の部分２３ｂと、有底筒状壁３１の前記一部３１ａ以外の残余の部分３１ｂとが、形成されている。遮断壁２２の前記一部２２ａとは異なるさらなる一部２２ｂと、連通管２３の残余の部分２３ｂおよび有底筒状壁３１の残余の部分３１ｂとの間には、図示略のリブが設けられている。
第３のピース１３には、遮断壁２２の前記一部２２ａ、２２ｂ以外の残余の部分２２ｃが形成されている。 As shown in FIG. 1, the silencer 10 includes first to third pieces 11, 12, and 13 that are separately formed and integrated.
The first piece 11 is formed with an intake duct forming wall 21, a part 22 a of the blocking wall 22, at least a part 23 a of the communication pipe 23, and a part 31 a of the bottomed cylindrical wall 31. Yes.
The second piece 12 has a further part 22b different from the part 22a of the blocking wall 22 and a part of the communication pipe 23 in the first piece 11 when only a part of the communication pipe 23 is formed. A remaining portion 23b and a remaining portion 31b other than the portion 31a of the bottomed cylindrical wall 31 are formed. A rib (not shown) is provided between a further portion 22b of the blocking wall 22 different from the portion 22a and the remaining portion 23b of the communication pipe 23 and the remaining portion 31b of the bottomed cylindrical wall 31. ing.
In the third piece 13, a remaining portion 22 c other than the portions 22 a and 22 b of the blocking wall 22 is formed.

ここで、本発明実施例の消音装置１０の製造方法を説明する。
消音層１０の製造方法は、
（ｉ） 第１のピース１１を図示略の金型内にセットした状態で吸気ダクト４０を３次元ブロー成形することで、第１のピース１１と吸気ダクト４０を固定する（第１のピース１１を吸気ダクト４０にインサート成形する）工程と、
（ｉｉ） 第２のピース１２を接着または溶着等により第１のピース１１に固定する工程と、
（iii） 第３のピース１３を接着または溶着等により第２のピース１２に固定する工程と、
を有する。 Here, the manufacturing method of the silencer 10 of the embodiment of the present invention will be described.
The manufacturing method of the sound deadening layer 10 is
(I) The first piece 11 and the intake duct 40 are fixed by performing three-dimensional blow molding of the intake duct 40 in a state where the first piece 11 is set in a mold (not shown) (the first piece 11 Insert molding into the intake duct 40),
(Ii) fixing the second piece 12 to the first piece 11 by bonding or welding,
(Iii) fixing the third piece 13 to the second piece 12 by bonding or welding,
Have

つぎに、本発明実施例の消音装置１０の作用を説明する。
第１のピース１１に、吸気ダクト形成壁２１と、遮断壁２２の一部２２ａと、連通管２３の少なくとも一部２３ａと、有底筒状壁３１の一部３１ａが形成されており、第２のピース１２に、遮断壁２２の一部２２ａとは異なるさらなる一部２２ｂと、第１のピース１１に連通管２３の一部のみが形成されている場合には連通管２３の残余の部分２３ｂと、有底筒状壁３１の残余の部分３１ｂが形成されており、第３のピース１３に、遮断壁２２の残余の部分２２ｃが形成されている。そのため、図２および図３に示すように、第２のピース１２に形成される連通管２３および有底筒状壁３１の残余の部分２３ｂ、３１ｂの長さを変更することで、連通管２３の長さと有底筒状壁３１の長さを変更することができ、ヘルムホルツタイプ消音器２０にて消音する周波数（ターゲット周波数）とサイドブランチタイプ消音器３０にて消音する周波数（ターゲット周波数）を変更することができる。したがって、１つの金型を新設することで（第１、第３のピース１１，１３成形用の金型を新設することなく、第２のピース１２成形用の金型のみを新設することで）、ヘルムホルツタイプ消音器２０とサイドブランチタイプ消音器３０の両方のターゲット周波数を変更でき、従来に比べてコスト上有利である。 Next, the operation of the silencer 10 of the embodiment of the present invention will be described.
The first piece 11 is formed with an intake duct forming wall 21, a part 22 a of the blocking wall 22, at least a part 23 a of the communication pipe 23, and a part 31 a of the bottomed cylindrical wall 31, When the second piece 12 is formed with only a further part 22b different from the part 22a of the blocking wall 22 and a part of the communication pipe 23 on the first piece 11, the remaining part of the communication pipe 23 23 b and the remaining portion 31 b of the bottomed cylindrical wall 31 are formed, and the remaining portion 22 c of the blocking wall 22 is formed in the third piece 13. Therefore, as shown in FIGS. 2 and 3, the communication pipe 23 is formed by changing the lengths of the communication pipe 23 formed in the second piece 12 and the remaining portions 23 b and 31 b of the bottomed cylindrical wall 31. The length of the cylindrical wall 31 and the length of the bottomed cylindrical wall 31 can be changed. The frequency (target frequency) to be silenced by the Helmholtz type silencer 20 and the frequency (target frequency) to be silenced by the side branch type silencer 30 are set. Can be changed. Therefore, by newly installing one mold (without newly installing molds for molding the first and third pieces 11 and 13, only by installing a mold for molding the second piece 12) The target frequencies of both the Helmholtz type silencer 20 and the side branch type silencer 30 can be changed, which is advantageous in terms of cost as compared with the prior art.

また、図２および図４に示すように、第２のピース１２に形成される連通管２３および有底筒状壁３１の残余の部分２３ｂ、３１ｂのレイアウト（位置）を入れ替えることで、連通管２３と有底筒状壁３１のレイアウト（位置）を変更することができ、ヘルムホルツタイプ消音器２０とサイドブランチタイプ消音器３０のターゲット周波数を変更することができる。   Further, as shown in FIGS. 2 and 4, the communication pipe 23 formed in the second piece 12 and the layout (position) of the remaining portions 23 b and 31 b of the bottomed cylindrical wall 31 are interchanged, so that the communication pipe 23 and the bottomed cylindrical wall 31 can be changed in layout (position), and the target frequencies of the Helmholtz type silencer 20 and the side branch type silencer 30 can be changed.

本発明実施例の消音装置の分解斜視図である。It is an exploded perspective view of a silencer of an example of the present invention. 本発明実施例の消音装置の断面図である。It is sectional drawing of the silencer of an Example of this invention. 本発明実施例の消音装置の、第２のピースに形成される連通管の残余の部分および有底筒状壁の残余の部分が図２の場合に比べて短い場合の、第２のピースの断面図である。In the silencer according to the embodiment of the present invention, the remaining part of the communication pipe formed in the second piece and the remaining part of the bottomed cylindrical wall are shorter than those in FIG. It is sectional drawing. 本発明実施例の消音装置の、第２のピースに形成される連通管の残余の部分と有底筒状壁の残余の部分のレイアウトを、図２の場合と異ならせた場合（入れ替えた場合）の、第２のピースの断面図である。When the layout of the remaining part of the communication pipe formed in the second piece and the remaining part of the bottomed cylindrical wall of the silencer of the embodiment of the present invention is different from the case of FIG. ) Is a cross-sectional view of the second piece.

符号の説明Explanation of symbols

１０ 消音装置
１１ 第１のピース
１２ 第２のピース
１３ 第３のピース
２０ ヘルムホルツタイプ消音器
２０ａ 共鳴室
２０ｂ 連通部
２１ 吸気ダクト形成壁
２２ 遮断壁
２３ 連通管
３０ サイドブランチタイプ消音器
３１ 有低筒状壁
４０ 吸気ダクト DESCRIPTION OF SYMBOLS 10 Silencer 11 1st piece 12 2nd piece 13 3rd piece 20 Helmholtz type silencer 20a Resonance chamber 20b Communication part 21 Intake duct formation wall 22 Blocking wall 23 Communication pipe 30 Side branch type silencer 31 Low cylinder Shaped wall 40 Intake duct

Claims (1)

（ａ）吸気ダクトの一部を形成する吸気ダクト形成壁と大気と遮断する遮断壁とで囲まれる空間からなる共鳴室と、前記吸気ダクト内と前記共鳴室とを連通させる連通管を前記吸気ダクト形成壁から前記共鳴室内に延びて設けることで構成される連通部と、を備えるヘルムホルツタイプ消音器と、
（ｂ）前記吸気ダクト形成壁から前記共鳴室内に突出する有底筒状壁にて構成されるサイドブランチタイプ消音器と、
を有し、別々に形成されて一体にされる第１、第２、第３のピースで構成される消音装置であって、
前記第１のピースに、前記吸気ダクト形成壁と、前記遮断壁の一部と、前記連通管の少なくとも一部と、前記有底筒状壁の一部が形成されており、
前記第２のピースに、前記遮断壁の一部とは異なるさらなる一部と、前記第１のピースに前記連通管の一部のみが形成されている場合には前記連通管の残余の部分と、前記有底筒状壁の残余の部分が形成されており、
前記第３のピースに、前記遮断壁の残余の部分が形成されている、消音装置。 (A) A resonance chamber composed of a space surrounded by an intake duct forming wall that forms a part of the intake duct and a blocking wall that blocks the atmosphere, and a communication pipe that communicates the inside of the intake duct and the resonance chamber with the intake air. A Helmholtz type silencer comprising: a communicating portion configured to extend from a duct forming wall into the resonance chamber; and
(B) a side branch type silencer configured with a bottomed cylindrical wall protruding into the resonance chamber from the intake duct forming wall;
A silencer composed of first, second, and third pieces that are separately formed and united,
In the first piece, the intake duct forming wall, a part of the blocking wall, at least a part of the communication pipe, and a part of the bottomed cylindrical wall are formed,
A further part different from a part of the blocking wall on the second piece, and a remaining part of the communication pipe when only a part of the communication pipe is formed on the first piece; The remaining portion of the bottomed cylindrical wall is formed,
The silencer, wherein the remaining part of the blocking wall is formed on the third piece.
JP2006320433A 2006-11-28 2006-11-28 Silencer Expired - Fee Related JP4731452B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261310A (en) * 2007-04-13 2008-10-30 Toyota Auto Body Co Ltd Intake noise muffler device
JP2012127330A (en) * 2010-12-17 2012-07-05 Suzuki Motor Corp Intake device for vehicular engine
EP3324034A1 (en) 2016-11-18 2018-05-23 Roki Co., Ltd. Muffling apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0250166U (en) * 1988-09-30 1990-04-09
JPH0575469U (en) * 1992-03-19 1993-10-15 豊田合成株式会社 Resonator
JPH0653756U (en) * 1992-12-25 1994-07-22 ダイハツ工業株式会社 Air intake duct noise absorber
JPH11294278A (en) * 1998-04-13 1999-10-26 Honda Motor Co Ltd Intake air silencer
JP2004301022A (en) * 2003-03-31 2004-10-28 Suzuki Motor Corp Suction manifold of internal combustion engine
JP2004308604A (en) * 2003-04-09 2004-11-04 Aisan Ind Co Ltd Resin-made intake manifold
JP2006046327A (en) * 2004-08-05 2006-02-16 Mann & Hummel Gmbh Intake noise attenuator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0250166U (en) * 1988-09-30 1990-04-09
JPH0575469U (en) * 1992-03-19 1993-10-15 豊田合成株式会社 Resonator
JPH0653756U (en) * 1992-12-25 1994-07-22 ダイハツ工業株式会社 Air intake duct noise absorber
JPH11294278A (en) * 1998-04-13 1999-10-26 Honda Motor Co Ltd Intake air silencer
JP2004301022A (en) * 2003-03-31 2004-10-28 Suzuki Motor Corp Suction manifold of internal combustion engine
JP2004308604A (en) * 2003-04-09 2004-11-04 Aisan Ind Co Ltd Resin-made intake manifold
JP2006046327A (en) * 2004-08-05 2006-02-16 Mann & Hummel Gmbh Intake noise attenuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008261310A (en) * 2007-04-13 2008-10-30 Toyota Auto Body Co Ltd Intake noise muffler device
JP4722875B2 (en) * 2007-04-13 2011-07-13 トヨタ車体株式会社 Air intake silencer
JP2012127330A (en) * 2010-12-17 2012-07-05 Suzuki Motor Corp Intake device for vehicular engine
EP3324034A1 (en) 2016-11-18 2018-05-23 Roki Co., Ltd. Muffling apparatus

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