JP2000240520A - Muffler - Google Patents
MufflerInfo
- Publication number
- JP2000240520A JP2000240520A JP11041386A JP4138699A JP2000240520A JP 2000240520 A JP2000240520 A JP 2000240520A JP 11041386 A JP11041386 A JP 11041386A JP 4138699 A JP4138699 A JP 4138699A JP 2000240520 A JP2000240520 A JP 2000240520A
- Authority
- JP
- Japan
- Prior art keywords
- resonance
- resonator
- resonance chamber
- holes
- intake 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
- Exhaust Silencers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両の吸気系ダク
トに連通されて吸気音を消音する消音器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muffler which is connected to an intake duct of a vehicle to mute intake noise.
【０００２】[0002]
【従来の技術】従来より用いられている、消音器が内部
に共鳴室をもつレゾネータである場合を、図９を参照し
て説明する。図９は、図示略の車両用エアクリーナーの
上流側の吸気ダクトから分岐され吸気ダクトに連通する
レゾネータ１を示している。レゾネータ１は、箱型の共
鳴室２と、図示略の吸気ダクトと共鳴室２を連通する共
鳴管３と、を有している。共鳴室２の底部４には、水抜
き穴５が１つ設けられている。水抜き穴５は、吸気ダク
トを通過する吸気中の水分（吸気ダクト内に入る雨、は
ね上げた水等）のうち共鳴室２に入ったものを抜くため
のものである。レゾネータは樹脂製で、金型を用いて成
形され、実車に搭載して試験が行われ、所定の周波数を
もつように手作業でチューニングされる。周波数がチュ
ーニングされたレゾネータをモデルとして、金型を修正
して、実際に車両に搭載されるレゾネータ１は成形され
る。周波数のチューニングは、共鳴室２の容積Ｖ，共鳴
管３の長さＬ，共鳴管３の開口面積Ｓ、音速ｃの関係式 ｆ＝［ｃ／２π］｛Ｓ／（Ｌ・Ｖ）｝1/2 ｆ：共鳴周波数 ｃ：音速 Ｓ：共鳴管開口面積 Ｌ：共鳴管長さ Ｖ：共鳴室容積 を用いて、開口面積Ｓ、共鳴管長さＬ、共鳴室容積Ｖ、
の３要素を変化させることにより行われている。また、
一般的に、周波数のチューニングにおいて、共鳴室の容
積Ｖを減らしていくとレゾネータ１の共鳴効果は小さく
なる傾向にあり、低い周波数の場合、容積Ｖは可能な限
り大にする必要があるといわれている。2. Description of the Related Art A case where a silencer conventionally used is a resonator having a resonance chamber therein will be described with reference to FIG. FIG. 9 shows the resonator 1 which branches off from an intake duct upstream of a vehicle air cleaner (not shown) and communicates with the intake duct. The resonator 1 includes a box-shaped resonance chamber 2 and a resonance pipe 3 that communicates the suction chamber (not shown) with the resonance chamber 2. One drain hole 5 is provided in the bottom 4 of the resonance chamber 2. The drain hole 5 is for draining the moisture (rain, splashed water, etc.) in the intake air passing through the intake duct that has entered the resonance chamber 2. The resonator is made of resin, molded using a mold, mounted on an actual vehicle, tested, and manually tuned to have a predetermined frequency. Using a resonator whose frequency is tuned as a model, the mold is modified, and the resonator 1 actually mounted on the vehicle is formed. The tuning of the frequency is performed by the relational expression of the volume V of the resonance chamber 2, the length L of the resonance tube 3, the opening area S of the resonance tube 3, and the sound speed c. F = [c / 2π] {S / (LV)} 1 / 2 f: resonance frequency c: sound velocity S: resonance tube opening area L: resonance tube length V: resonance chamber volume, using the opening area S, resonance tube length L, resonance chamber volume V,
This is performed by changing the three elements. Also,
In general, in tuning the frequency, the resonance effect of the resonator 1 tends to decrease as the volume V of the resonance chamber decreases, and it is said that the volume V needs to be as large as possible at low frequencies. ing.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記の従来の
消音器には、つぎの問題がある。 チューニング部分が容積Ｖ、開口面積Ｓ、共鳴管長
さＬの３要素あり、また３要素のそれぞれに変化させる
自由度があるため、チューニングの工数がかかり、かつ
チューニングが難しい。 チューニングが、容積Ｖ、開口面積Ｓ、共鳴管長さ
Ｌを縮小方向に行われる場合、共鳴効果（消音効果）が
小さくなる。 チューニングが、容積Ｖ、開口面積Ｓ、共鳴管長さ
Ｌを拡大方向にするように行われる場合、車両搭載上の
困難を生じることが多い。 チューニング時に、容積Ｖ、開口面積Ｓを変化させ
る場合、金型修正費用が多くかかる。 本発明の目的は、チューニングを容易に行うことができ
る消音器を提供することにある。本発明のもう一つの目
的は、チューニングを実施しても、共鳴効果を低下させ
ず、かつ、車両搭載に影響を与えない消音器を提供する
ことにある。本発明のさらにもう一つの目的は、チュー
ニングのための金型の修正をほとんど必要としない消音
器を提供することにある。However, the above-mentioned conventional silencer has the following problems. Since the tuning portion has three elements of the volume V, the opening area S, and the length L of the resonance tube, and each of the three elements has a degree of freedom to change, the tuning man-hour is increased and tuning is difficult. When tuning is performed in a direction in which the volume V, the opening area S, and the length L of the resonance tube are reduced, a resonance effect (a silencing effect) is reduced. When tuning is performed such that the volume V, the opening area S, and the length L of the resonance tube are set in the enlargement direction, it is often difficult to mount the vehicle. If the volume V and the opening area S are changed at the time of tuning, the cost for correcting the mold is high. An object of the present invention is to provide a muffler that can easily perform tuning. Another object of the present invention is to provide a muffler that does not reduce the resonance effect even when tuning is performed and does not affect the mounting on a vehicle. It is yet another object of the present invention to provide a silencer that requires little modification of the mold for tuning.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明は、つぎの通りである。車両の吸気ダクトから分岐さ
れかつ内部に吸気ダクトに連通する共鳴室をもつ消音器
であって消音器の大気または別のボリュームとの隔壁に
複数の穴が形成されている消音器。The present invention to achieve the above object is as follows. A silencer branched from an intake duct of a vehicle and having a resonance chamber therein communicating with the intake duct, wherein a plurality of holes are formed in a partition wall between the silencer and the atmosphere or another volume.
【０００５】上記本発明の消音器では、共鳴室の容積、
共鳴管の開口面積、共鳴管の長さを変化させることな
く、穴を設けることで低減すべき音領域の周波数のチュ
ーニングを行うため、穴の数、穴の位置等を変化させる
のみで、チューニングを容易に行うことができる。ま
た、チューニングの内容が、従来では共鳴室容積、共鳴
管開口面積、共鳴管長さにおける縮小方向にある場合で
も、本発明では共鳴室容積、共鳴管開口面積、共鳴管長
さを変化させることなく穴数、穴位置でチューニングす
るため、共鳴効果を低下させない。また、共鳴室容積、
共鳴管開口面積、共鳴管長さを変化させることなく穴を
設けることで周波数のチューニングを行うため、共鳴室
の大型化や共鳴管の長さの増加を伴うことなく、問題な
く車両に搭載できる。さらに、穴を設けることで周波数
のチューニングを行うため、消音器の壁に穴を形成する
だけの修正で済み、金型の修正は不要か、あるいは少量
で済み、低コストである。In the silencer of the present invention, the volume of the resonance chamber,
To tune the frequency of the sound region to be reduced by providing holes without changing the opening area of the resonance tube and the length of the resonance tube, tuning only by changing the number of holes, the position of the holes, etc. Can be easily performed. In addition, even if the content of tuning is conventionally in the direction of reduction in the resonance chamber volume, the resonance tube opening area, and the resonance tube length, the present invention does not change the resonance chamber volume, the resonance tube opening area, and the resonance tube length without changing the resonance tube length. Tuning by number and position of holes does not reduce the resonance effect. Also, the resonance chamber volume,
Since the frequency is tuned by providing the holes without changing the opening area of the resonance tube and the length of the resonance tube, the resonance tube can be mounted on a vehicle without any problem without enlarging the resonance room or increasing the length of the resonance tube. Furthermore, since the frequency is tuned by providing the holes, it is only necessary to make a hole in the wall of the silencer, and the mold does not need to be modified, or only a small amount is required, and the cost is low.
【０００６】[0006]
【発明の実施の形態】図１〜図６は、本発明の第１実施
例の消音器を示しており、図７、図８は本発明の第２実
施例の消音器を示している。本発明の第１、第２実施例
に共通する部分には、本発明の第１、第２実施例にわた
って同じ符号を付してある。以下、本発明の消音器の実
施例を、車両の吸気ダクト（以下、単に吸気ダクトとい
う）から分岐し吸気ダクトに連通する、吸気音を消音す
る箱型のレゾネータの場合を例にとって説明する。1 to 6 show a silencer according to a first embodiment of the present invention, and FIGS. 7 and 8 show a silencer according to a second embodiment of the present invention. Portions common to the first and second embodiments of the present invention are denoted by the same reference numerals throughout the first and second embodiments of the present invention. Hereinafter, an embodiment of the muffler of the present invention will be described by taking, as an example, the case of a box-type resonator that silences intake noise and branches off from an intake duct (hereinafter, simply referred to as an intake duct) of a vehicle and communicates with the intake duct.
【０００７】まず、本発明の両実施例にわたって共通す
る部分の構成および作用を、たとえば図１〜図６を参照
して、説明する。本発明の消音器であるレゾネータ２０
は、車両の吸気ダクト１０から分岐されかつ内部に吸気
ダクト１０に連通する共鳴室３０と、共鳴室３０と吸気
ダクト１０とを連通する共鳴管４０と、からなる。吸気
ダクト１０は、車両のエアクリーナの上流に配置され
る、たとえば樹脂製のダクトであり、たとえば図示略の
金型を用いた樹脂のインジェクション成形（射出成形）
で成形される。First, the structure and operation of a portion common to both embodiments of the present invention will be described with reference to, for example, FIGS. Resonator 20 as muffler of the present invention
Is composed of a resonance chamber 30 branched from the intake duct 10 of the vehicle and communicating with the intake duct 10 therein, and a resonance pipe 40 communicating the resonance chamber 30 and the intake duct 10. The intake duct 10 is a duct made of, for example, resin disposed upstream of an air cleaner of a vehicle, and is, for example, injection molding (injection molding) of resin using a mold (not shown).
Molded.
【０００８】共鳴室３０の一壁３２または２以上の壁に
は、共鳴室３０と大気または共鳴室３０以外のボリュー
ムとを連通する周波数チューニング用の穴３４が複数形
成されている。穴３４が共鳴室３０の底壁に形成される
場合は、穴３４の少なくとも１つは、水抜き穴３３にも
使用される。水抜き穴３３は、吸気ダクト１０を通過す
る吸気中の水分（吸気ダクト１０内に入る雨、はね上げ
た水等）のうち共鳴室３０に入ったものを抜くためのも
のである。穴３４が共鳴室３０の底壁に設けられない場
合は、共鳴室３０の底壁に水抜き穴３３が１つ設けられ
なければならない。On one wall 32 or two or more walls of the resonance chamber 30, there are formed a plurality of holes 34 for frequency tuning which communicate the resonance chamber 30 with the atmosphere or a volume other than the resonance chamber 30. If holes 34 are formed in the bottom wall of the resonance chamber 30, at least one of the holes 34 is also used for the drain hole 33. The drain hole 33 is for draining the water (rain, splashed water, etc.) in the intake air passing through the intake duct 10 that has entered the resonance chamber 30. If the hole 34 is not provided on the bottom wall of the resonance chamber 30, one drain hole 33 must be provided on the bottom wall of the resonance chamber 30.
【０００９】水抜き穴３３と穴３４は、必ずしも同一壁
内にある必要はなく、穴３４は共鳴室３０の底壁３２以
外に形成されてもよいし、共鳴管４０に形成されてもよ
い。また、穴３４の径、個数は、穴３４からレゾネータ
２０の外部に漏れる音が問題がない程度とされており、
たとえば、穴３４が丸形状の場合、直径３ｍｍ〜１５ｍ
ｍで、５個〜２０個が望ましく、さらに望ましくは、直
径５ｍｍ程度で、１０個程度がよい。The drain hole 33 and the hole 34 do not necessarily have to be in the same wall. The hole 34 may be formed in a portion other than the bottom wall 32 of the resonance chamber 30 or may be formed in the resonance tube 40. . The diameter and the number of the holes 34 are such that sound leaking from the holes 34 to the outside of the resonator 20 has no problem.
For example, when the hole 34 has a round shape, the diameter is 3 mm to 15 m.
m is preferably 5 to 20 pieces, more preferably about 5 mm in diameter and about 10 pieces.
【００１０】穴３４が、共鳴室底壁３２で、同じ形状
で、同じ径で、所定の規則性を有して形成された場合、
形成された穴３４の数に比例して、レゾネータ２０の共
鳴周波数は高い方にずれる傾向を有する。図３は、共鳴
室３０の容積Ｖ、共鳴管２０の長手方向の長さと開口面
積Ｓを変えずに、穴３４を所定の位置に直径５ｍｍで６
個または１８個形成した場合（６個の場合は図の点線で
示しており、１８個の場合は図の１点鎖線で示してい
る。）の共鳴効果を示したものであり、穴３４を形成し
ない場合（図の実線）に比べて周波数が高い側にずれて
いる。When the hole 34 is formed in the resonance chamber bottom wall 32 in the same shape, the same diameter, and with a predetermined regularity,
In proportion to the number of holes 34 formed, the resonance frequency of the resonator 20 tends to shift higher. FIG. 3 shows that the hole 34 is formed at a predetermined position with a diameter of 5 mm and a diameter of 6 mm without changing the volume V of the resonance chamber 30, the length in the longitudinal direction and the opening area S of the resonance tube 20.
This shows the resonance effect when 18 or 18 pieces are formed (six pieces are shown by dotted lines in the figure, and 18 pieces are shown by dashed lines in the figure). The frequency is shifted to a higher side as compared with the case where no pattern is formed (solid line in the figure).
【００１１】ここで、レゾネータ２０の、試作品（モデ
ル）の状態から周波数がチューニングされるまでの一例
を説明する。まず、従来の経験から適当と思われる金型
を製作する。その金型を用いて、レゾネータの試作品
（モデル）を、たとえば樹脂のインジェクション成形
（射出成形）で形成する。形成されたレゾネータのモデ
ルを実車に搭載して試験を行う。その後、周波数のチュ
ーニングを要する場合、レゾネータのモデルに穴３４を
必要に応じて形成し、モデルのレゾネータの共鳴周波数
を消音したい周波数に対応させる。その後、レゾネータ
のモデルと同様のレゾネータを形成するために、金型を
修正する。この修正は、穴３４を形成したい位置に、金
型にピンを打ち込むことにより行う。修正した金型を用
いて、周波数がチューニングされたレゾネータ２０を成
形する。または、金型を用いて、レゾネータのモデルを
形成する段階で、あらかじめ複数の穴３４をモデルに形
成しておき、図４、図５に示すように、レゾネータ２０
と別体の、たとえばゴム等の樹脂製からなる穴塞ぎ部材
５０および穴径調整部材５１を用いて、レゾネータのモ
デルの共鳴周波数を消したい周波数に合わせてもよい。Here, an example of the resonator 20 from the state of the prototype (model) to the frequency tuning will be described. First, a mold that is considered appropriate from conventional experience is manufactured. Using the mold, a prototype (model) of the resonator is formed by, for example, resin injection molding (injection molding). A test is conducted by mounting the formed resonator model on an actual vehicle. Thereafter, when frequency tuning is required, holes 34 are formed in the resonator model as necessary, and the resonance frequency of the resonator of the model is made to correspond to the frequency to be silenced. Thereafter, the mold is modified to form a resonator similar to the resonator model. This correction is performed by driving a pin into a mold at a position where the hole 34 is to be formed. Using the modified mold, the resonator 20 whose frequency is tuned is formed. Alternatively, at the stage of forming a resonator model using a mold, a plurality of holes 34 are previously formed in the model, and as shown in FIGS.
By using a hole closing member 50 and a hole diameter adjusting member 51 made of resin such as rubber, which are separate from the above, the resonance frequency of the resonator model may be adjusted to the frequency to be eliminated.
【００１２】つぎに、作用を説明する。所定のエンジン
および吸気管長に適合したレゾネータと、別のエンジン
および吸気管長に適合するレゾネータと、が同じ形状を
有する場合、所定のエンジンおよび吸気管長に適合した
レゾネータの成形時に使用した金型を、穴３４の数、位
置、形状、径等を変更することで、別のエンジンおよび
吸気管長に適合するレゾネータの場合でも使用すること
ができる。穴３４を塞ぐ変更、および穴３４の径を小に
する方向への変更は、図４、図５に示すように、レゾネ
ータ２０と別体の、たとえばゴム等の樹脂製からなる穴
塞ぎ部材５０、穴径調整部材５１を使用すると便利であ
る。Next, the operation will be described. When a resonator adapted to a predetermined engine and intake pipe length and a resonator adapted to another engine and intake pipe length have the same shape, the mold used when molding the resonator adapted to the predetermined engine and intake pipe length is used. By changing the number, position, shape, diameter, and the like of the holes 34, it can be used even in the case of a resonator that is compatible with another engine and intake pipe length. As shown in FIGS. 4 and 5, the hole closing member 50 made of a resin such as rubber, which is separate from the resonator 20, can be used to change the direction of closing the hole 34 and to reduce the diameter of the hole 34. It is convenient to use the hole diameter adjusting member 51.
【００１３】また、一般的には、低い周波数（約１００
Ｈｚ）の吸気音を消したい場合、容積Ｖをできるだけ大
にする必要があるといわれている。低い周波数（約１０
０Ｈｚ）を消すことができるレゾネータ２０を、それよ
り高い周波数（約１２０〜１４０Ｈｚ）を消すことがで
きるレゾネータ２０にチューニングする場合、従来では
容積Ｖを減少させる必要があったが、本発明の消音器で
は容積Ｖの変更は不要であるため、共鳴効果を損なうこ
となく周波数のチューニングをすることができる。ま
た、本発明の消音器は、共鳴管４０と共鳴室３０を有す
る箱型のレゾネータ２０である場合を例にとって説明し
たが、本発明は箱型のレゾネータ２０に限定されるもの
ではなく、たとえば筒状のレゾネータ（サイドブラン
チ）、または拡張室型のレゾネータであってもよい。そ
の場合は、サイドブランチ内の空間が共鳴室を構成し、
拡張室が共鳴室を構成する。In general, low frequencies (about 100
It is said that it is necessary to make the volume V as large as possible in order to eliminate the intake noise of (Hz). Low frequency (about 10
In the case where the resonator 20 capable of extinguishing 0 Hz) is tuned to the resonator 20 capable of extinguishing higher frequencies (about 120 to 140 Hz), the volume V has conventionally had to be reduced. Since the volume V need not be changed in the vessel, the frequency can be tuned without deteriorating the resonance effect. Further, the case where the muffler of the present invention is a box-shaped resonator 20 having the resonance tube 40 and the resonance chamber 30 has been described as an example. However, the present invention is not limited to the box-shaped resonator 20. It may be a cylindrical resonator (side branch) or an expansion chamber type resonator. In that case, the space in the side branch constitutes the resonance chamber,
The expansion chamber constitutes the resonance chamber.
【００１４】つぎに、本発明の各実施例に特有な部分を
説明する。本発明の第１実施例では、図１〜図６に示す
ように、共鳴室３０が１つからなるタイプ（シングルタ
イプ）のレゾネータ２０、または第１の共鳴室３０ａと
第２の共鳴室３０ｂとの、共鳴室３０が２つからなるタ
イプ（デュアルタイプ）のレゾネータ２０を示してい
る。何れの場合も、共鳴室３０、３０ａ、３０ｂは吸気
ダクト１０に直接連通している。デュアルタイプのレゾ
ネータ２０において、穴３４は、第１の共鳴室３０ａの
み、または第２の共鳴室３０ｂのみに形成されていても
よい。上記以外の本発明の第１実施例の構成および作用
は、前述した、本発明の第１、第２の両実施例に共通す
る部分の作用と同じである。Next, parts unique to each embodiment of the present invention will be described. In the first embodiment of the present invention, as shown in FIGS. 1 to 6, a single-type resonator 20 having one resonance chamber 30, or a first resonance chamber 30 a and a second resonance chamber 30 b. 2 shows a resonator 20 of a type having two resonance chambers 30 (dual type). In any case, the resonance chambers 30, 30a, 30b are in direct communication with the intake duct 10. In the dual type resonator 20, the hole 34 may be formed only in the first resonance chamber 30a or only in the second resonance chamber 30b. The configuration and operation of the first embodiment of the present invention other than those described above are the same as those of the portions common to both the first and second embodiments of the present invention described above.
【００１５】本発明の第２実施例では、図７、図８に示
すように、吸気ダクト１０に直接連通する第３の共鳴室
３０ｃと吸気ダクト１０に直接には連通せず第３の共鳴
室３０ｃを介して連通する第４の共鳴室３０ｄとの、共
鳴室３０が２つあるタイプであり、第３の共鳴室３０ｃ
と第４の共鳴室３０ｄがその間の仕切り壁６１に形成さ
れた穴３４を介して互いに連通しているタイプ（ハイブ
リッドタイプ）のレゾネータ２０を示している。穴３４
は、第３の共鳴室３０ｃと第４の共鳴室３０ｄとの仕切
り壁６１に形成されてる他、レゾネータ２０と大気との
隔壁６０にも形成されてもよい。この場合、第４の共鳴
室３０ｄは、吸気ダクト１０に連通する第３の共鳴室３
０ｃと仕切り壁６１により隔てられたボリュームを構成
する。In the second embodiment of the present invention, as shown in FIGS. 7 and 8, a third resonance chamber 30c which directly communicates with the intake duct 10 and a third resonance chamber which does not directly communicate with the intake duct 10. A third resonance chamber 30c with a fourth resonance chamber 30d communicating with the third resonance chamber 30c via the chamber 30c.
And the fourth resonance chamber 30d communicate with each other via a hole 34 formed in a partition wall 61 therebetween (a hybrid type). Hole 34
May be formed on the partition wall 61 between the third resonance chamber 30c and the fourth resonance chamber 30d, and may also be formed on the partition wall 60 between the resonator 20 and the atmosphere. In this case, the fourth resonance chamber 30 d is connected to the third resonance chamber 3 communicating with the intake duct 10.
0c and a volume separated by a partition wall 61.
【００１６】ハイブリッドタイプのレゾネータ２０にお
いて、穴３４が仕切り壁６１に形成された場合、図８に
示すように、仕切り壁６１の穴３４にレゾネータ２０と
別体で所定の長さを有する、たとえばゴム等の樹脂製か
らなる共鳴管部調整部材５２を取り付けてもよい。その
場合、共鳴管部調整部材５２に共鳴管４０と同じ働きを
させ、第４の共鳴室にボリュームの働きをさせてもよ
い。上記以外の本発明の第２実施例の構成および作用
は、本発明の第１、第２の両実施例にわたって共通する
部分の構成、作用と同じである。In the hybrid type resonator 20, when the hole 34 is formed in the partition wall 61, as shown in FIG. 8, the hole 34 of the partition wall 61 has a predetermined length separately from the resonator 20. A resonance tube adjusting member 52 made of resin such as rubber may be attached. In that case, the resonance tube section adjusting member 52 may have the same function as the resonance tube 40, and the fourth resonance chamber may have the function of a volume. The configuration and operation of the second embodiment of the present invention other than those described above are the same as the configuration and operation of the portion common to both the first and second embodiments of the present invention.
【００１７】[0017]
【発明の効果】本発明の消音器によれば、共鳴室の容
積、共鳴管の開口面積、共鳴管の長さを変化させること
なく、共鳴室の壁に複数の穴を設けることにより周波数
のチューニングを行うため、穴の数、穴の位置等を変化
させるだけでチューニングを行うことができ、チューニ
ングが容易となる。また、チューニングの内容が、従来
の共鳴室容積、共鳴管開口面積、共鳴管長さにおける縮
小方向である場合でも、本発明では共鳴室容積、共鳴管
開口面積、共鳴管長さを変化させることなく穴数、穴位
置でチューニングするため、共鳴効果を低下させない。
また、共鳴室容積、共鳴管開口面積、共鳴管長さを変化
させることなく穴を設けることで周波数のチューニング
を行うため、スペース上問題なく車両に搭載できる。さ
らに、穴を設けることでチューニングを行うため、金型
の修正は消音器に穴を形成するピンを立てるだけの修正
で済み、金型全体を作りなおす必要がないので、金型の
修正は低コストである。According to the silencer of the present invention, the frequency can be reduced by providing a plurality of holes in the wall of the resonance chamber without changing the volume of the resonance chamber, the opening area of the resonance pipe, and the length of the resonance pipe. Since tuning is performed, tuning can be performed only by changing the number of holes, the position of the holes, and the like, and tuning is facilitated. Further, even when the tuning is performed in the conventional resonance chamber volume, resonance tube opening area, and reduction direction in the resonance tube length, the present invention does not change the resonance chamber volume, resonance tube opening area, and resonance tube length without changing the hole. Tuning by number and position of holes does not reduce the resonance effect.
Further, since the frequency is tuned by providing holes without changing the resonance chamber volume, the resonance tube opening area, and the resonance tube length, it can be mounted on a vehicle without any space problem. Furthermore, since tuning is performed by providing holes, the correction of the mold is only required to raise the pin that forms the hole in the silencer, and there is no need to rebuild the entire mold. Cost.
【図１】本発明の第１実施例の消音器で、消音器がシン
グルタイプのレゾネータである場合の斜視図である。FIG. 1 is a perspective view of a silencer according to a first embodiment of the present invention, in which the silencer is a single-type resonator.
【図２】本発明の第１実施例の消音器で、消音器がシン
グルタイプのレゾネータである場合の断面図である。FIG. 2 is a cross-sectional view of the silencer according to the first embodiment of the present invention, in which the silencer is a single-type resonator.
【図３】本発明の第１実施例の消音器で消音器がシング
ルタイプのレゾネータである場合に、直径５ｍｍの穴を
６個および１８個設けたことにより共鳴周波数がずれる
ことを示す音圧／周波数特性変化の概念図である。FIG. 3 is a diagram showing a sound pressure in which the resonance frequency is shifted by providing six and eight holes each having a diameter of 5 mm when the muffler of the first embodiment of the present invention is a single-type resonator. FIG. 5 is a conceptual diagram of frequency characteristic change.
【図４】穴塞ぎ部材を穴に使用した場合の、穴塞ぎ部材
とその近傍を示す断面図である。FIG. 4 is a cross-sectional view showing a hole closing member and its vicinity when a hole closing member is used for a hole;
【図５】穴径調整部材を穴に使用した場合の、穴径調整
部材とその近傍を示す断面図である。FIG. 5 is a sectional view showing a hole diameter adjusting member and its vicinity when a hole diameter adjusting member is used for a hole;
【図６】本発明の第１実施例の消音器で、消音器がデュ
アルタイプのレゾネータである場合の断面図である。FIG. 6 is a cross-sectional view of the silencer according to the first embodiment of the present invention, in which the silencer is a dual-type resonator.
【図７】本発明の第２実施例の消音器で、消音器がハイ
ブリッド型のレゾネータである場合の断面図である。FIG. 7 is a cross-sectional view of a silencer according to a second embodiment of the present invention, in which the silencer is a hybrid type resonator.
【図８】共鳴管部調整部材を穴に使用した場合の、共鳴
管部調整部材とその近傍を示す断面図である。FIG. 8 is a cross-sectional view showing the resonance tube portion adjustment member and its vicinity when the resonance tube portion adjustment member is used for a hole.
【図９】従来の消音器で、消音器がシングルタイプのレ
ゾネータである場合の斜視図である。FIG. 9 is a perspective view of a conventional silencer in which the silencer is a single-type resonator.
１０ ダクト ２０ レゾネータ ３０ 共鳴室 ３３ 水抜き穴 ３４ 穴 ４０ 共鳴管 DESCRIPTION OF SYMBOLS 10 Duct 20 Resonator 30 Resonance room 33 Drainage hole 34 Hole 40 Resonance tube
Claims (1)
に吸気ダクトに連通する共鳴室をもつ消音器であって消
音器の大気または別のボリュームとの隔壁に複数の穴が
形成されている消音器。1. A silencer having a resonance chamber which is branched from an intake duct of a vehicle and communicates with the intake duct therein, wherein the silencer has a plurality of holes formed in a partition wall between the silencer and the atmosphere or another volume. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04138699A JP3505421B2 (en) | 1999-02-19 | 1999-02-19 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04138699A JP3505421B2 (en) | 1999-02-19 | 1999-02-19 | Silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000240520A true JP2000240520A (en) | 2000-09-05 |
| JP3505421B2 JP3505421B2 (en) | 2004-03-08 |
Family
ID=12606956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04138699A Expired - Fee Related JP3505421B2 (en) | 1999-02-19 | 1999-02-19 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3505421B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044424A (en) * | 2002-07-09 | 2004-02-12 | Toyoda Gosei Co Ltd | Air cleaner |
| JP2004278494A (en) * | 2003-03-19 | 2004-10-07 | Toyoda Gosei Co Ltd | Intake device |
| JP2005155129A (en) * | 2003-11-25 | 2005-06-16 | East Japan Railway Co | Tunnel shock absorbing work |
| KR100758103B1 (en) * | 2006-03-22 | 2007-09-11 | 대기산업 주식회사 | Vehicle apparatus resonator |
| JP2008232053A (en) * | 2007-03-22 | 2008-10-02 | Roki Co Ltd | Sound attenuating duct |
| JP2008231979A (en) * | 2007-03-19 | 2008-10-02 | Roki Co Ltd | Muffling chamber duct |
| EP2295782A1 (en) * | 2009-09-11 | 2011-03-16 | Hutchinson | Silencing device for an intake line of a thermal engine and intake line incorporating a silencing device |
| JP2011190697A (en) * | 2010-03-12 | 2011-09-29 | Kojima Press Industry Co Ltd | Intake device |
| GB2485138A (en) * | 2010-10-19 | 2012-05-09 | Jaguar Cars | Air Duct Attenuator |
| CN102606270A (en) * | 2010-10-19 | 2012-07-25 | 捷豹汽车有限公司 | Air duct attenuator |
| GB2488535A (en) * | 2011-02-21 | 2012-09-05 | Jaguar Cars | Air Duct Attenuator |
-
1999
- 1999-02-19 JP JP04138699A patent/JP3505421B2/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004044424A (en) * | 2002-07-09 | 2004-02-12 | Toyoda Gosei Co Ltd | Air cleaner |
| JP2004278494A (en) * | 2003-03-19 | 2004-10-07 | Toyoda Gosei Co Ltd | Intake device |
| JP2005155129A (en) * | 2003-11-25 | 2005-06-16 | East Japan Railway Co | Tunnel shock absorbing work |
| JP4555560B2 (en) * | 2003-11-25 | 2010-10-06 | 東日本旅客鉄道株式会社 | Tunnel buffer |
| KR100758103B1 (en) * | 2006-03-22 | 2007-09-11 | 대기산업 주식회사 | Vehicle apparatus resonator |
| JP2008231979A (en) * | 2007-03-19 | 2008-10-02 | Roki Co Ltd | Muffling chamber duct |
| JP2008232053A (en) * | 2007-03-22 | 2008-10-02 | Roki Co Ltd | Sound attenuating duct |
| FR2950112A1 (en) * | 2009-09-11 | 2011-03-18 | Hutchinson | ACOUSTICAL ATTENUATION DEVICE FOR THE INTAKE LINE OF A THERMAL MOTOR, AND ADMISSION LINE INCORPORATING IT |
| EP2295782A1 (en) * | 2009-09-11 | 2011-03-16 | Hutchinson | Silencing device for an intake line of a thermal engine and intake line incorporating a silencing device |
| US8177024B2 (en) | 2009-09-11 | 2012-05-15 | Hutchinson | Accoustic attenuation device for an intake line of a combustion engine and intake line incorporating same |
| JP2011190697A (en) * | 2010-03-12 | 2011-09-29 | Kojima Press Industry Co Ltd | Intake device |
| GB2485138A (en) * | 2010-10-19 | 2012-05-09 | Jaguar Cars | Air Duct Attenuator |
| CN102606270A (en) * | 2010-10-19 | 2012-07-25 | 捷豹汽车有限公司 | Air duct attenuator |
| US8408357B2 (en) | 2010-10-19 | 2013-04-02 | Jaguar Cars Limited | Air duct attenuator |
| GB2488535A (en) * | 2011-02-21 | 2012-09-05 | Jaguar Cars | Air Duct Attenuator |
| GB2488535B (en) * | 2011-02-21 | 2015-04-22 | Jaguar Land Rover Ltd | Air duct attenuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3505421B2 (en) | 2004-03-08 |
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