JPH0413406Y2 - - Google Patents
Info
- Publication number
- JPH0413406Y2 JPH0413406Y2 JP1987001817U JP181787U JPH0413406Y2 JP H0413406 Y2 JPH0413406 Y2 JP H0413406Y2 JP 1987001817 U JP1987001817 U JP 1987001817U JP 181787 U JP181787 U JP 181787U JP H0413406 Y2 JPH0413406 Y2 JP H0413406Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pulsation
- upstream
- intake
- stopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000010349 pulsation Effects 0.000 claims description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 235000014676 Phragmites communis Nutrition 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000003252 repetitive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、バルブの自励振動によつて流体流動
系の脈動を低減するようにした脈動低減用リード
バルブに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pulsation reducing reed valve that reduces pulsation in a fluid flow system through self-excited vibration of the valve.
（従来の技術）
第４図にターボチヤージヤを備えた車両の吸気
系の構成図を示すが、エンジンＥの排気ガスが有
するエネルギの一部によつてターボチヤージヤ
Ｔ／Ｃの排気タービンが回転駆動され、該排気タ
ービンに直結されるターボコンプレツサも同時に
駆動される。そして、ターボコンプレツサの回転
によつて吸気が圧縮され、この圧縮された吸気は
インタークーラーＩ／Ｃへ導かれてここで冷却さ
れ、更にサージタンクＴへ導かれる。このサージ
タンクＴ内では吸気圧の変動が或る程度抑えら
れ、吸気は次のキヤブレータＣに導かれ、ここで
霧化された燃料と混合されて所定圧の混合気が形
成され、この混合気はエンジンＥに導かれて燃焼
に供される。尚、吸気はターボチヤージヤＴ／Ｃ
によつて予め圧縮されているため、エンジンＥの
シリンダ内には多量の混合気が充填され、エンジ
ンＥの出力向上が図られる。(Prior Art) FIG. 4 shows a configuration diagram of an intake system of a vehicle equipped with a turbocharger. The exhaust turbine of the turbocharger T/C is rotationally driven by a part of the energy of the exhaust gas of the engine E. A turbo compressor directly connected to the exhaust turbine is also driven at the same time. The intake air is compressed by the rotation of the turbo compressor, and the compressed intake air is guided to the intercooler I/C, cooled there, and further guided to the surge tank T. Fluctuations in the intake pressure are suppressed to some extent within this surge tank T, and the intake air is guided to the next carburetor C, where it is mixed with atomized fuel to form an air-fuel mixture at a predetermined pressure. is led to engine E and subjected to combustion. In addition, the intake is turbocharger T/C
Since the air-fuel mixture is compressed in advance by the engine E, a large amount of air-fuel mixture is filled into the cylinder of the engine E, and the output of the engine E is improved.
（考案が解決しようとする問題点）
しかしながら、上記吸気系にあつては、インタ
ークーラーＩ／ＣとサージタンクＴとの間に生ず
る吸気脈動が大きいと、キヤブレータＣのフロー
トが振動してエンジンＥへの安定した混合気の供
給ができないばかりか、吸気脈動による騒音の問
題も発生する。(Problem to be solved by the invention) However, in the above-mentioned intake system, if the intake pulsation occurring between the intercooler I/C and the surge tank T is large, the float of the carburetor C will vibrate and the air will be transferred to the engine E. Not only is it not possible to supply a stable air-fuel mixture, but also noise problems occur due to intake pulsation.
本考案は上記問題に鑑みてなされたもので、そ
の目的とする処は、流体流動系の脈動を低減して
脈動に伴う騒音等の問題を有効に解消することが
できる脈動低減用リードバルブを提供するにあ
る。 The present invention was developed in view of the above problems, and its purpose is to provide a pulsation reduction reed valve that can reduce pulsation in a fluid flow system and effectively eliminate problems such as noise associated with pulsation. It is on offer.
（問題点を解決するための手段）
上記目的を達成すべく本考案は、バルブケース
内に流体の流れ方向に対してほぼ垂直に弾性薄板
状のバルブを配し、該バルブの一端をバルブケー
スに固定し自由端側をバルブケース内周に対して
非接触状態に保持してバルブを自励振動可能に構
成し、前記バルブの流体の流れ方向の振動を上流
側ストツパ及び下流側ストツパによつて規制し、
前記上流側ストツパには、通気孔を穿設してなる
ことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention arranges an elastic thin plate-like valve in a valve case almost perpendicular to the direction of fluid flow, and connects one end of the valve to the valve case. The valve is configured to be capable of self-excited vibration by fixing the free end side in a non-contact state to the inner circumference of the valve case, and vibration of the valve in the fluid flow direction is caused by an upstream stopper and a downstream stopper. regulations,
The upstream stopper is characterized by being provided with a ventilation hole.
（作用）
而して、吸気を脈動せしめるエンジンの一部は
本考案に係るリードバルブの弾性薄板状バルブの
自励振動に費やされるため、吸気脈動が低減せし
められ、この吸気脈動に伴う騒音等の種々の問題
が解消される。また、弾性薄板製のバルブの上下
流側に設けられた上流側および下流側ストツパに
よつて、バルブの過度の変形が規制され、脈動吸
収時にバルブに生じる繰り返し応力を所定値以下
に小さくできる。(Function) Since a part of the engine that causes the intake air to pulsate is used for self-excited vibration of the elastic thin plate-like valve of the reed valve according to the present invention, the intake pulsation is reduced, and the noise etc. associated with this intake pulsation is reduced. various problems are solved. Moreover, the upstream and downstream stoppers provided upstream and downstream of the valve made of thin elastic plates prevent excessive deformation of the valve, and the repetitive stress generated in the valve during pulsation absorption can be reduced to a predetermined value or less.
さらに、上流側ストツパに通気孔を設けておく
ことにより、通気孔を通じてバルブに流体を当て
て効率的に自励振動をさせることができる。 Further, by providing a vent hole in the upstream stopper, fluid can be applied to the valve through the vent hole to cause efficient self-excited vibration.
（実施例）
以下に本考案の一実施例を添付図面に基づいて
説明する。(Example) An example of the present invention will be described below based on the accompanying drawings.
第１図は本考案に係る脈動低減用リードバルブ
の縦断側面図、第２図は第１図の矢視Ａ方向の
図、第３図は第１図の−線断面図である。 1 is a longitudinal sectional side view of a reed valve for reducing pulsation according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is a sectional view taken along the line -- in FIG.
第１図に示す脈動低減用リードバルブ１は、例
えば第４図に示すターボチヤージヤ付エンジンの
吸気系のインタークーラーＩ／Ｃとサージタンク
Ｔとの間に介設され、これは２分割タイプのケー
ス２，３を有し、これたケース２，３は、４本の
ビス４……にて接合一体化され、一方のケース２
の端部は第４図に示すインタークーラーＩ／Ｃに
接続され、他方のケース３の端部はサージタンク
Ｔに接続されている。 The pulsation reduction reed valve 1 shown in FIG. 1 is interposed, for example, between the intercooler I/C and the surge tank T of the intake system of the turbocharged engine shown in FIG. , 3, these cases 2 and 3 are joined together with four screws 4..., and one case 2
The end of the case 3 is connected to the intercooler I/C shown in FIG. 4, and the end of the other case 3 is connected to the surge tank T.
上記ケース２，３を接合一体化して構成される
バルブケース５内を流体（本実施例にては吸気）
は第１図の矢印ａ方向へ流れるが、両ケース２，
３の接合部には、２肢状を成す自励振動可能の弾
性薄板状のバルブ６が流体の流れ方向（図示矢印
ａ方向）に対して垂直に、且つ振動自在にその一
端をビス７，７にて固定されて設けられている。
そしてバルブ６の自由端側はバルブケース５内周
とは非接触状態に保持されている。尚、このバル
ブ６の流体の流れ方向の振動は、これの両側に該
バルブ６を挾む如くして設けられる二肢状の上流
側ストツパ８及び下流側ストツパ９によつて規制
され、特に上流側ストツパ８には複数の通気孔１
０……が穿設されている。又、バルブ６は、通
常、金属又は樹脂によつて成形される。 Fluid (intake in this example) flows through the valve case 5, which is constructed by joining and integrating the cases 2 and 3.
flows in the direction of arrow a in Fig. 1, but in both cases 2 and
At the joint of 3, a two-limbed elastic thin plate valve 6 capable of self-excited vibration is attached at one end to a screw 7, perpendicular to the fluid flow direction (direction of arrow a in the figure) and capable of freely vibrating. It is fixedly provided at 7.
The free end side of the valve 6 is held in a non-contact state with the inner periphery of the valve case 5. The vibration of the valve 6 in the fluid flow direction is regulated by two limb-shaped upstream stoppers 8 and downstream stoppers 9, which are provided on both sides of the valve 6 so as to sandwich the valve 6. A plurality of ventilation holes 1 are provided in the side stopper 8.
0... is drilled. Further, the valve 6 is usually molded from metal or resin.
次に本脈動低減用リードバルブ１の作用を説明
する。 Next, the operation of the present pulsation reducing reed valve 1 will be explained.
第４図に示すエンジンＥから排出される排気エ
ネルギの一部によつてターボチヤージヤＴ／Ｃが
駆動され、このターボチヤージヤＴ／Ｃによつて
吸気が圧縮され、この圧縮された吸気はインター
クーラーＩ／Ｃにて冷却された後、本考案に係る
リードバルブ１を通過する。即ち、吸気はリード
バルブ１のバルブケース５内を第１図の矢印ａ方
向へ流れるが、その一部は上流側ストツパ８に穿
設された通気孔１０……を経てバルブ６の上流面
に作用し、又他の一部は上流側ストツパ８の自由
端を乗り越えて同バルブ６の上流面に作用し、該
バルブ６を自励振動せしめる。また、弾性薄板製
のバルブ６の上下流側に設けられた上流側および
下流側ストツパ８，９によつて、バルブ６の過度
の変形が規制され、脈動吸収時にバルブ６に生じ
る繰り返し応力を所定値以下に小さくできる。 The turbocharger T/C is driven by a part of the exhaust energy discharged from the engine E shown in FIG. After being cooled at , it passes through the reed valve 1 according to the present invention. That is, intake air flows inside the valve case 5 of the reed valve 1 in the direction of arrow a in FIG. The other part passes over the free end of the upstream stopper 8 and acts on the upstream face of the valve 6, causing the valve 6 to self-excited vibration. In addition, upstream and downstream stoppers 8 and 9 provided on the upstream and downstream sides of the valve 6 made of thin elastic plates prevent excessive deformation of the valve 6, and reduce the repetitive stress generated in the valve 6 when absorbing pulsation to a predetermined level. It can be made smaller than the value.
さらに、上流側ストツパ８の通気孔１０を設け
ておくことにより、通気孔１０を通じてバルブ６
に流体を当てて効率的に自励振動させることがで
きる。 Furthermore, by providing the ventilation hole 10 of the upstream stopper 8, the valve 6 can be passed through the ventilation hole 10.
By applying fluid to the surface, it is possible to efficiently generate self-excited vibration.
ところで、上記リードバルブ６の自励振動は、
吸気の有するエネルギ（音のエネルギを含む）の
一部を消費してなされるため、主に定在波から成
る吸気脈動が緩和され、音圧レベルが下がつて脈
動に伴う騒音も低減される。特に吸気脈動が緩和
されることによつてキヤブレータＣ（第４図参照）
のフトーロ（図示せず）の振動が抑えられ、該キ
ヤブレータＣにて形成された混合気のエンジンＥ
への安定した供給が現実され得る。具体的には、
サージタンクＴの内圧において従来0.2Kg／cm2で
あつた脈動振巾が本考案に係るリードバルブ１の
使用によつて0.05Kg／cm2まで下がる。 By the way, the self-excited vibration of the reed valve 6 is as follows:
Because this is done by consuming a part of the energy of the intake air (including sound energy), the intake pulsation, which is mainly composed of standing waves, is alleviated, the sound pressure level is lowered, and the noise associated with the pulsation is also reduced. . In particular, by easing the intake pulsation, the carburetor C (see Fig. 4)
The vibration of the futuro (not shown) is suppressed, and the air-fuel mixture formed in the carburetor C is reduced in the engine E.
A stable supply of can be realized. in particular,
The pulsation amplitude, which was conventionally 0.2 Kg/cm 2 at the internal pressure of the surge tank T, is reduced to 0.05 Kg/cm 2 by using the reed valve 1 according to the present invention.
而して、前述の如くエンジンＥのシリンダ（図
示せず）には多量の混合気が充填されるため、エ
ンジンＥの出力向上が図られる。 As described above, since the cylinder (not shown) of the engine E is filled with a large amount of air-fuel mixture, the output of the engine E is improved.
尚、以上は本考案に係る脈動低減用リードバル
ブを特にターボチヤージヤを備える車両の吸気系
に適用した例について述べたが、本リードバルブ
はその他任意の流体流動系に対して適用可能であ
る。また、弾性薄板製のバルブの上下流側に設け
られた上流側および下流側ストツパによつて、バ
ルブの過度の変形が規制され、脈動吸収時にバル
ブに生じる繰り返し応力を所定値以下に小さくで
き、バルブの耐久性向上を図ることができる。 Although an example in which the pulsation reduction reed valve according to the present invention is applied to an intake system of a vehicle equipped with a turbocharger has been described above, the present reed valve can be applied to any other fluid flow system. In addition, the upstream and downstream stoppers provided upstream and downstream of the valve made of thin elastic plates prevent excessive deformation of the valve, and the repetitive stress generated in the valve when absorbing pulsation can be reduced to below a predetermined value. It is possible to improve the durability of the valve.
さらに、上流側ストツパに通気孔を設けておく
ことにより、通気孔を通じてバルブに流体を当て
て効率的に自励振動をさせることができ、耐久性
向上を図りつつ、しかも効果的に脈動を低減する
ことができる。 Furthermore, by providing a ventilation hole in the upstream stopper, it is possible to apply fluid to the valve through the ventilation hole and cause it to efficiently self-excite vibration, improving durability and effectively reducing pulsation. can do.
（考案の効果）
以上の説明で明らかな如く本考案によれば、バ
ルブケース内に流体の流れ方向に対して垂直に、
且つ自励振動可能に弾性薄板製のバルブを配し、
バルブの一端をバルブケースに固定し、自由端側
をバルブケース内周とは非接触状態に保持したた
め、当該リードバルブを流れる流体の脈動エネル
ギの一部がバルブの自励振動に消費され、流体流
動系の脈動が低減されてこの脈動に伴う騒音等の
問題が有効に解消されるという効果が得られる。(Effects of the invention) As is clear from the above explanation, according to the invention, the valve case has the following effects:
In addition, a valve made of an elastic thin plate is arranged to enable self-excited vibration,
Because one end of the valve was fixed to the valve case and the free end side was kept in a non-contact state with the inner periphery of the valve case, a part of the pulsating energy of the fluid flowing through the reed valve is consumed by self-excited vibration of the valve, causing the fluid to oscillate. The effect is that pulsation in the fluid system is reduced and problems such as noise associated with this pulsation are effectively eliminated.
第１図は本考案に係る脈動低減用リードバルブ
の縦断側面図、第２図は第１図の矢視Ａ方向の
図、第３図は第１図の−線断面図、第４図は
ターボチヤージヤ付エンジンの吸気系の構成を示
すブロツク図である。
符号の説明、１……脈動低減用リードバルブ、
５……バルブケース、６……バルブ、８……上流
側ストツパ、９……下流側ストツパ、１０……通
気孔。
Fig. 1 is a longitudinal cross-sectional side view of a reed valve for pulsation reduction according to the present invention, Fig. 2 is a view taken in the direction of arrow A in Fig. 1, Fig. 3 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 4 is FIG. 2 is a block diagram showing the configuration of an intake system of a turbocharged engine. Explanation of symbols, 1... Reed valve for pulsation reduction,
5...Valve case, 6...Valve, 8...Upstream stopper, 9...Downstream stopper, 10...Vent hole.
Claims (1)
垂直に弾性薄板状のバルブを配し、該バルブの一
端をバルブケースに固定し自由端側をバルブケー
ス内周に対して非接触状態に保持してバルブを自
励振動可能に構成し、 前記バルブの流体の流れ方向の振動を上流側ス
トツパ及び下流側ストツパによつて規制し、 前記上流側ストツパには、通気孔を穿設してな
ることを特徴とする脈動低減用リードバルブ。[Claim for Utility Model Registration] An elastic thin plate-like valve is arranged in a valve case almost perpendicular to the direction of fluid flow, one end of the valve is fixed to the valve case, and the free end side is attached to the inner periphery of the valve case. The valve is configured to be capable of self-excited vibration by being held in a non-contact state with respect to the valve, and the vibration of the valve in the fluid flow direction is regulated by an upstream stopper and a downstream stopper, and the upstream stopper has a A reed valve for reducing pulsation characterized by having air holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987001817U JPH0413406Y2 (en) | 1987-01-09 | 1987-01-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987001817U JPH0413406Y2 (en) | 1987-01-09 | 1987-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63110666U JPS63110666U (en) | 1988-07-15 |
| JPH0413406Y2 true JPH0413406Y2 (en) | 1992-03-27 |
Family
ID=30780075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987001817U Expired JPH0413406Y2 (en) | 1987-01-09 | 1987-01-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0413406Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4711238B2 (en) * | 2006-12-28 | 2011-06-29 | 株式会社デンソー | Intake device |
| CN105358816A (en) * | 2013-07-09 | 2016-02-24 | Nok株式会社 | Sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141152U (en) * | 1983-03-11 | 1984-09-20 | 日産自動車株式会社 | Diesel engine intake noise reduction device |
-
1987
- 1987-01-09 JP JP1987001817U patent/JPH0413406Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63110666U (en) | 1988-07-15 |
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