JP2002309948A - Intake system structure of engine - Google Patents
Intake system structure of engineInfo
- Publication number
- JP2002309948A JP2002309948A JP2001113845A JP2001113845A JP2002309948A JP 2002309948 A JP2002309948 A JP 2002309948A JP 2001113845 A JP2001113845 A JP 2001113845A JP 2001113845 A JP2001113845 A JP 2001113845A JP 2002309948 A JP2002309948 A JP 2002309948A
- Authority
- JP
- Japan
- Prior art keywords
- intake
- intake air
- supercharger
- intake pipe
- resonator
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Supercharger (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、過給機をそなえた
エンジンにおける吸気系の構造、とくに、過給機の設置
により発生しやすい騒音を抑制する機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an intake system in an engine having a supercharger, and more particularly to a mechanism for suppressing noise which is likely to be generated by installing a supercharger.
【０００２】[0002]
【従来の技術】過給機をそなえた従来の車載エンジンに
おいては、過給機から吸気冷却器へ加圧吸気を送給する
パイプが、車載の都合上なるべく直線的で、かつ、短く
形成されているため、過給機により脈動を付与された加
圧吸気が上記パイプによって吸気冷却器へ送給される
と、その脈動に基づく騒音が吸気冷却器から比較的大き
く放射されやすくなるという問題があった。2. Description of the Related Art In a conventional vehicle-mounted engine equipped with a supercharger, a pipe for supplying pressurized intake air from the supercharger to an intake air cooler is formed as straight and as short as possible for the convenience of the vehicle. Therefore, when the pressurized intake air pulsated by the supercharger is sent to the intake air cooler by the pipe, there is a problem that noise based on the pulsation is relatively easily emitted from the intake air cooler. there were.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、過給機をそ
なえたエンジンにおいて、吸気パイプにより過給機と連
結された吸気冷却器から騒音が放射されることを効果的
に抑制しようとするものである。SUMMARY OF THE INVENTION The present invention is intended to effectively suppress noise radiated from an intake air cooler connected to a supercharger by an intake pipe in an engine having a supercharger. Things.
【０００４】[0004]
【課題を解決するための手段】このため、本発明にかか
るエンジンの吸気系構造は、過給機と吸気冷却器とを連
結し途中に折り返し湾曲部をそなえた吸気パイプ、及
び、上記吸気パイプに連通して上記湾曲部の内側に配置
されたレゾネータを有している。SUMMARY OF THE INVENTION Therefore, an intake system structure of an engine according to the present invention comprises: an intake pipe having a curved portion which is connected to a supercharger and an intake cooler and has a bent portion; And a resonator disposed inside the curved portion in communication with the resonator.
【０００５】すなわち、吸気パイプが折り返し湾曲部を
有しているので、過給機から排出された吸気は、比較的
長く、かつ、折り返されて湾曲した吸気パイプ内を流れ
ることにより流速が低下すると共に、吸気パイプの内壁
面に適宜衝突して、過給機により付与されていた脈動が
効果的に減衰させられ、さらに、レゾネータによっても
脈動が減衰させられ、しかも、レゾネータが吸気パイプ
における折り返し湾曲部の内側に配置されているため、
装置全体をコンパクトに構成することが可能となる。That is, since the intake pipe has the return curved portion, the intake air discharged from the supercharger is relatively long, and the flow velocity is reduced by flowing through the return and curved intake pipe. At the same time, it collides appropriately with the inner wall surface of the intake pipe, the pulsation given by the supercharger is effectively attenuated, and the pulsation is also attenuated by the resonator, and furthermore, the resonator is bent back in the intake pipe. Because it is located inside the part,
The entire device can be made compact.
【０００６】[0006]
【発明の実施の形態】以下、図面に示す本発明の実施形
態例について説明する。車両に搭載された図示しないエ
ンジンに対し、エアクリーナ１に吸入された外気が過給
機２により加圧されてから、吸気パイプ３を経て吸気冷
却器（インタクーラ）４へ送給され、吸気冷却器４で冷
却された吸気がエンジンに送給される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention shown in the drawings will be described. External air drawn into an air cleaner 1 is pressurized by a supercharger 2 to an engine (not shown) mounted on a vehicle, and then is sent to an intake cooler (intercooler) 4 via an intake pipe 3 and is cooled by an intake cooler. The intake air cooled in 4 is sent to the engine.
【０００７】過給機２と吸気パイプ３との連結部には、
多数の小孔が形成された整流板５が挟み込まれており、
また、吸気パイプ３は、その入口部に拡張室６が形成さ
れていると共に、途中に折り返し湾曲部７を有し、その
出口部には断面がハニカム形状等で吸気パイプ３の軸方
向に延びた多数の小通路からなる整流管８が設けられ、
さらに、折り返し湾曲部７の内側には、吸気パイプ３に
連通する枝管状のレゾネータ９が配置されている。[0007] At the connection between the supercharger 2 and the intake pipe 3,
A flow straightening plate 5 having a large number of small holes is sandwiched therebetween.
Further, the intake pipe 3 has an expansion chamber 6 formed at an inlet portion thereof, has a folded curved portion 7 in the middle thereof, and has an outlet portion extending in the axial direction of the intake pipe 3 in a honeycomb shape or the like in cross section. A flow straightening tube 8 composed of a large number of small passages is provided,
Further, a branch tubular resonator 9 communicating with the intake pipe 3 is arranged inside the folded back portion 7.
【０００８】また、吸気冷却器４の入口側タンク１０は
比較的容積の大きい拡張室を形成し、入口側タンク１０
の上流部分には複数の仕切板１１によって吸気の迷路１
２が設けられていると共に、それぞれ入口側タンク１０
に連通して容積及び長さの異なる適宜数の枝管状レゾネ
ータ１３が配置されている。[0008] The inlet-side tank 10 of the intake air cooler 4 forms an expansion chamber having a relatively large volume.
Maze 1 of the intake air
2 are provided, and the inlet side tanks 10 are respectively provided.
And an appropriate number of branch tubular resonators 13 having different volumes and lengths are arranged in communication with the branch tubes.
【０００９】上記装置において、過給機２により加圧さ
れた吸気は、吸気パイプ３内へ流出する際整流板５の小
孔を通って整流されることにより、過給機２により付与
されていた脈動がまず減衰し、次に、拡張室６で膨張す
ることにより各振動数の脈動が拡張比で決まる割合でそ
れぞれ減衰させられ、さらに、レゾネータ９の容積、長
さ等に対応した振動数の脈動がレゾネータ９により減衰
させられ、次に、折り返し湾曲部７内を流過するとき、
折り返し湾曲部７の形状に基づいて吸気パイプ３が比較
的長く、かつ、湾曲して折り返されているため、吸気は
流速が低下すると同時にパイプ３の内壁面に適宜衝突す
ることによって、いろいろな周波数の脈動が共通して効
果的に減衰させられ、さらに、整流管８の小通路を通過
するとき整流されて脈動が減衰し、吸気冷却器４へ流入
する。なお、吸気が吸気パイプ３内を流過するとき、一
般的に折り返し湾曲部７の形状による吸気流速の低下が
吸気の脈動を低減させるのに最も大きな影響を及ぼして
いる。In the above device, the intake air pressurized by the supercharger 2 is given by the supercharger 2 by being rectified through small holes of the rectifying plate 5 when flowing into the intake pipe 3. The pulsation is first attenuated, and then expanded in the expansion chamber 6, whereby the pulsation of each frequency is attenuated at a rate determined by the expansion ratio, and the frequency corresponding to the volume, length, etc. of the resonator 9 is further reduced. When the pulsation is attenuated by the resonator 9 and then flows through the folded back portion 7,
Since the intake pipe 3 is relatively long based on the shape of the return curved portion 7 and is bent and folded, the intake air lowers the flow velocity and at the same time appropriately collides with the inner wall surface of the pipe 3 so that various frequencies are obtained. The pulsation is effectively attenuated in common, and is further rectified when passing through the small passage of the rectification pipe 8, whereby the pulsation is attenuated and flows into the intake air cooler 4. In addition, when the intake air flows through the intake pipe 3, a decrease in the intake flow velocity due to the shape of the return curved portion 7 generally has the greatest effect on reducing the pulsation of the intake air.
【００１０】また、吸気冷却器４へ流入した吸気は、入
口側タンク１０の上流部分に設けられた迷路１２を流過
するとき、迷路１２の仕切板１１に適宜衝突することに
よって脈動が減衰させられ、さらに、入口側タンク１０
の拡張室効果によっても脈動が減衰させられと共に、各
レゾネータ１３の容積、長さ等に対応した振動数の脈動
がそれぞれのレゾネータ１３によりさらに減衰させられ
る。Further, when the intake air flowing into the intake air cooler 4 flows through a maze 12 provided on the upstream side of the inlet side tank 10, it collides with a partition plate 11 of the maze 12 to attenuate pulsation. And the inlet tank 10
The pulsation is also attenuated by the expansion chamber effect, and the pulsation having a frequency corresponding to the volume, length, and the like of each resonator 13 is further attenuated by each resonator.
【００１１】従って、吸気冷却器４に流入する吸気は脈
動が大きく減衰させられているので、吸気冷却器４から
騒音が放射されることは効果的に抑制されて、騒音の発
生が低減する結果、車両の特性を容易に向上させること
ができる。Therefore, since the pulsation of the intake air flowing into the intake air cooler 4 is greatly attenuated, the emission of noise from the intake air cooler 4 is effectively suppressed, and the generation of noise is reduced. Therefore, the characteristics of the vehicle can be easily improved.
【００１２】しかも、吸気パイプ３が折り返し湾曲部７
の部分で大きく屈曲していても、折り返し湾曲部７の内
側にレゾネータ９が配置されていて、折り返し湾曲部７
が占める空間を無駄なく利用することにより装置全体を
コンパクトに構成することができ、とくに、軽車両のよ
うにエンジンルーム内の空間が強く制約される場合にそ
の効果が著しく現れるものである。Moreover, the intake pipe 3 is folded back by the curved portion 7.
, The resonator 9 is disposed inside the turn-back portion 7 and the turn-back portion 7
By using the space occupied by the vehicle without waste, the entire apparatus can be made compact. In particular, when the space in the engine room is strongly restricted as in a light vehicle, the effect is remarkably exhibited.
【００１３】なお、上記実施形態例における整流板５、
拡張室６、整流管８、迷路１２、及び、レゾネータ１３
は、所要コストと吸気脈動の減衰効果との関係等を考慮
して、場合によってはそれらのいずれかを適宜省略する
ようにしても、それぞれの場合に相応して吸気の脈動を
減衰させることにより、吸気冷却器４から騒音が放射さ
れることを抑制できるのはいうまでもない。In addition, the current plate 5 in the above-mentioned embodiment,
Expansion chamber 6, rectifier tube 8, maze 12, and resonator 13
Considering the relationship between the required cost and the intake pulsation damping effect, etc., even if any of them may be omitted as appropriate, by attenuating the intake pulsation corresponding to each case, Needless to say, the radiation of noise from the intake air cooler 4 can be suppressed.
【００１４】[0014]
【発明の効果】本発明にかかるエンジンの吸気系構造に
あっては、吸気パイプが折り返し湾曲部を有していて、
過給機から排出された吸気は湾曲して折り返された吸気
パイプ内を流れるときに流速が低下すると共に、吸気パ
イプの内壁面に適宜衝突して、吸気の脈動が効果的に減
衰させられ、さらに、レゾネータによっても吸気の脈動
が減衰させられるので、吸気冷却器から騒音が放射され
ることを効果的に抑制することができ、また、レゾネー
タが吸気パイプにおける折り返し湾曲部の内側に配置さ
れていて、装置全体をコンパクトに構成することが可能
となるため、車両への搭載がとくに便利となる長所があ
る。According to the intake system structure of the engine according to the present invention, the intake pipe has a folded portion,
When the intake air discharged from the supercharger flows through the curved and folded intake pipe, the flow velocity decreases, and collides appropriately with the inner wall surface of the intake pipe, whereby the pulsation of the intake air is effectively attenuated, Furthermore, since the pulsation of the intake air is also attenuated by the resonator, it is possible to effectively suppress the emission of noise from the intake air cooler, and the resonator is disposed inside the folded back portion of the intake pipe. As a result, the entire device can be made compact, and there is an advantage that mounting on a vehicle is particularly convenient.
【図１】本発明の実施形態例における概略側面図。FIG. 1 is a schematic side view of an embodiment of the present invention.
２ 過給機 ３ 吸気パイプ ４ 吸気冷却器 ５ 整流板 ６ 拡張室 ７ 折り返し湾曲部 ８ 整流管 ９ レゾネータ １０ 入口側タンク １２ 迷路 １３ レゾネータ DESCRIPTION OF SYMBOLS 2 Supercharger 3 Intake pipe 4 Intake cooler 5 Rectifier plate 6 Expansion room 7 Folded bent part 8 Rectifier tube 9 Resonator 10 Inlet side tank 12 Maze 13 Resonator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 勝野 達也 神奈川県川崎市幸区堀川町580番地16 三 菱自動車エンジニアリング株式会社内 (72)発明者 丸島 秀治 神奈川県川崎市幸区堀川町580番地16 三 菱自動車エンジニアリング株式会社内 (72)発明者 井上 孝幸 神奈川県川崎市幸区堀川町580番地16 三 菱自動車エンジニアリング株式会社内 (72)発明者 宮脇 伸二 神奈川県川崎市幸区堀川町580番地16 三 菱自動車エンジニアリング株式会社内 Ｆターム(参考） 3G005 FA11 GB17 HA13 JA24 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuya Katsuno 580-16 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside Mitsubishi Motors Engineering Co., Ltd. Inside Mitsubishi Motors Engineering Co., Ltd. (72) Takayuki Inoue 580-16 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside Mitsubishi Motors Corporation (72) Shinji Miyawaki 580-16 Horikawa-cho, Sachi-ku, Kawasaki-shi, Kanagawa Mitsubishi Motors Engineering Co., Ltd. F-term (reference) 3G005 FA11 GB17 HA13 JA24
Claims (1)
り返し湾曲部をそなえた吸気パイプ、及び、上記吸気パ
イプに連通して上記湾曲部の内側に配置されたレゾネー
タを有するエンジンの吸気系構造。An engine having an intake pipe connecting a turbocharger and an intake air cooler and having a bent portion in the middle thereof, and a resonator connected to the intake pipe and disposed inside the curved portion. Intake system structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001113845A JP2002309948A (en) | 2001-04-12 | 2001-04-12 | Intake system structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001113845A JP2002309948A (en) | 2001-04-12 | 2001-04-12 | Intake system structure of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002309948A true JP2002309948A (en) | 2002-10-23 |
Family
ID=18965014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001113845A Withdrawn JP2002309948A (en) | 2001-04-12 | 2001-04-12 | Intake system structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002309948A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256839A (en) * | 2004-03-12 | 2005-09-22 | Man B & W Diesel Gmbh | Reciprocating piston internal combustion engine |
-
2001
- 2001-04-12 JP JP2001113845A patent/JP2002309948A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256839A (en) * | 2004-03-12 | 2005-09-22 | Man B & W Diesel Gmbh | Reciprocating piston internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080701 |