JPH081156B2 - Engine intake system - Google Patents
Engine intake systemInfo
- Publication number
- JPH081156B2 JPH081156B2 JP3981087A JP3981087A JPH081156B2 JP H081156 B2 JPH081156 B2 JP H081156B2 JP 3981087 A JP3981087 A JP 3981087A JP 3981087 A JP3981087 A JP 3981087A JP H081156 B2 JPH081156 B2 JP H081156B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- surge tank
- engine
- port
- tank
- 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 - Lifetime
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Landscapes
- Characterised By The Charging Evacuation (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、吸気通路に合成樹脂製のサージタンクを備
えたエンジンの吸気装置に関し、特にそのサージタンク
の構造に関する。Description: TECHNICAL FIELD The present invention relates to an engine intake device provided with a synthetic resin surge tank in an intake passage, and particularly to a structure of the surge tank.
（従来技術及びその問題点） 所謂慣性過給を利用するエンジンの場合、吸気通路に
ある程度の長さが必要になる為、エンジンルーム内のレ
イアウト上、クランクシャフトから離れた位置に重量の
重い吸気関係部品が取付けられる傾向がある。この場
合、クランクシャフトを中心としたエンジンのローリン
グによって吸気通路中のシール面のシール性が悪化した
り亀裂が生ずる惧れがあることから、特開昭57−181964
号公報開示の如く、吸気通路の一部を合成樹脂化して軽
量化を図るようにしたものが提案されている。このう
ち、特に合成樹脂の耐熱性や重量面を考慮してエンジン
から最も遠い位置に取付けられるサージタンクの合成樹
脂化が考えられる。(Prior art and its problems) In the case of an engine that uses so-called inertial supercharging, the intake passage needs to have a certain length, and therefore, due to the layout in the engine room, a heavy intake air is placed at a position away from the crankshaft. Related parts tend to be installed. In this case, the rolling of the engine around the crankshaft may deteriorate the sealing performance of the sealing surface in the intake passage or cause cracks.
As disclosed in Japanese Patent Laid-Open Publication No. 2004-242, there has been proposed a structure in which a part of the intake passage is made of synthetic resin to reduce the weight. Of these, considering the heat resistance and weight of the synthetic resin, the surge tank mounted at the farthest position from the engine may be made of synthetic resin.
しかし乍ら、サージタンクを合成樹脂化する場合、従
来の金属性に比べて剛性、特にスロットルボディから空
気を導入するポート、或いは燃焼室に空気を供給するポ
ートのいずれも接合されていない面の剛性が弱い。この
為、吸気脈動により前記剛性の弱いタンク面が振動して
吸気放射音を発生するという問題が生じる。However, when the surge tank is made of synthetic resin, its rigidity is higher than that of conventional metal, and especially, the port for introducing air from the throttle body or the port for supplying air to the combustion chamber is not joined. The rigidity is weak. Therefore, there arises a problem that the tank surface having low rigidity vibrates due to the intake pulsation to generate intake radiation sound.
（発明の目的） 本発明は、上記の如き事情に鑑み、軽量化を損なうこ
となく合成樹脂製サージタンクの剛性の弱い面の剛性を
高めて吸気放射音の低減を図ったエンジンの吸気装置の
提供をその目的とする。(Object of the Invention) In view of the above circumstances, an object of the present invention is to provide an intake device for an engine, in which the rigidity of a surface of a synthetic resin surge tank having a low rigidity is increased without impairing the weight reduction to reduce intake radiation noise. The purpose is to provide.
（発明の構成） 本発明に係るエンジンの吸気装置は、吸気通路に設け
た合成樹脂製のサージタンクに、スロットルボディから
空気を導入するポートと燃焼室に空気を供給するポート
のいずれもが連結されない面同士を連結する少なくとも
一つの中空リブ部を設け、この中空リブ部によりサージ
タンクの低剛性部分の剛性を向上させることにより、軽
量化を損なうことなく吸気脈動に伴うサージタンク面の
振動を抑制して吸気放射音を低減するように構成したも
のである。(Structure of the Invention) In the engine intake device according to the present invention, both the port for introducing air from the throttle body and the port for supplying air to the combustion chamber are connected to a synthetic resin surge tank provided in the intake passage. By providing at least one hollow rib part that connects the surfaces that are not protected, and by improving the rigidity of the low rigidity part of the surge tank by this hollow rib part, the vibration of the surge tank surface due to the intake pulsation can be achieved without impairing the weight reduction. It is configured to suppress and reduce the intake radiation noise.
（発明の実施例） 図示吸気装置は、燃料噴射方式の４気筒エンジンに適
用したものであるり、１はシリンダヘッド２及びシリン
ダブロック３等を備えたエンジン本体で、シリンダブロ
ック３に設けた吸気ポート４に、インテークマニホール
ド５、サージタンク６及びスロットルボディ７等を接続
してＪ字状上に形成された吸気通路８が連通接続してい
る。尚、９はインジェクタ、10はフューエルディスであ
る。(Embodiment of the Invention) The illustrated intake device is applied to a fuel injection type four-cylinder engine. Reference numeral 1 denotes an engine main body including a cylinder head 2, a cylinder block 3 and the like, and an intake air provided in the cylinder block 3 An intake manifold 5, a surge tank 6, a throttle body 7, and the like are connected to the port 4, and an intake passage 8 formed in a J shape is connected to the port 4. In addition, 9 is an injector and 10 is a fuel disc.
前記サージタンク６は合成樹脂製であり、各吸気ポー
ト４…に連通する各インテークマニホールド５…に夫々
接続されるポート部6A…及びスロットルボディ取付用フ
ランジ6Bが一体成形されている。又、各ポート部6A…間
には、タンク上面6Cとタンク下面6Dとを連結するリブ部
6E…が設けられている。このリブ部6E…はいずれも、タ
ンク上面6Cの外方空間とタンク下面6Dの外方空間とを連
通すべく中空状になっている。The surge tank 6 is made of synthetic resin, and is integrally formed with a port portion 6A ... And a throttle body mounting flange 6B which are respectively connected to the intake manifolds 5 ... Which communicate with the intake ports 4. Further, a rib portion connecting the tank upper surface 6C and the tank lower surface 6D is provided between the respective port portions 6A.
6E ... is provided. Each of the rib portions 6E ... Is hollow so as to connect the outer space of the tank upper surface 6C and the outer space of the tank lower surface 6D.
上記の如く構成すると、サージタンク６内に複数の支
柱が所定間隔で設置されることとなるので、上下方向の
剛性が向上して吸気脈動に伴うタンク上・下面6C・6Dの
振動が抑制され、サージタンク６からの吸気放射音の発
生が防止され、且つ上記支柱が中空である為サージタン
クの軽量化を損なうことはない。又、各ポート部6A…間
にリブ部6E…を設けている為、吸気抵抗の増大も殆どな
い。With the above configuration, since a plurality of columns are installed in the surge tank 6 at a predetermined interval, the vertical rigidity is improved and the vibrations of the tank upper and lower surfaces 6C and 6D due to the intake pulsation are suppressed. The generation of intake radiation noise from the surge tank 6 is prevented, and the weight of the surge tank is not impaired because the pillar is hollow. Further, since the rib portions 6E are provided between the respective port portions 6A, the intake resistance hardly increases.
更に、本実施例のようなＪ字状の吸気通路８の場合、
サージタンク６とインテークマニホールド５との間の空
間部に熱気が滞留し易く、この熱気によってインジェク
タ９内の燃料が気化して熱間再始動性能を悪化させる傾
向があるが、サージタンク６の中空リブ部6E…でタンク
上・下面6C・6Dの外方空間を相互に連通させたことによ
って、サージタンク６下方空間の熱気を上方に逃がすこ
とができ、インジェクタ９周囲温度の低減を図ることが
出来る為、熱間再始動性を向上できるという効果があ
る。Further, in the case of the J-shaped intake passage 8 as in this embodiment,
Hot air tends to stay in the space between the surge tank 6 and the intake manifold 5, and the hot air tends to vaporize the fuel in the injector 9 to deteriorate the hot restart performance. By connecting the outer spaces of the tank upper and lower surfaces 6C and 6D to each other by the ribs 6E, hot air in the space below the surge tank 6 can be released upward, and the ambient temperature of the injector 9 can be reduced. Therefore, there is an effect that the hot restartability can be improved.
尚、吸気通路形状及び中空リブ部の数乃至配置等は本
実施例に限定されるものではなく、中央域に一つの中空
リブ部を設ける丈でも吸気放射音は相当低減されるもの
である。The shape of the intake passage and the number and arrangement of the hollow ribs are not limited to those in the present embodiment, and the intake radiation noise can be considerably reduced even if one hollow rib is provided in the central region.
（発明の効果） 上記の如き本発明に係るエンジンの吸気装置に依れ
ば、軽量化の為合成樹脂製のサージタンクを採用した場
合でも軽量化を損なうことなく剛性の弱い面を連結して
高い剛性が得られるので、吸気脈動に伴うサージタンク
面の振動が抑制されて吸気放射音を低減することが出来
る。(Effects of the Invention) According to the engine air intake device according to the present invention as described above, even if a surge tank made of synthetic resin is adopted for weight reduction, the surfaces having low rigidity are connected without impairing the weight reduction. Since high rigidity is obtained, vibration of the surge tank surface due to intake pulsation is suppressed, and intake radiation noise can be reduced.
第１図は本発明に係る吸気装置の一実施例を示す概略構
成図、第２図は第１図のＡ矢視図、第３図は第１図のII
I−III線断面図である。 １……エンジン本体、４……吸気ポート ５……インテークマニホールド ６……サージタンク、6C……タンク上面 6D……タンク下面、6E……リブ部 ７……スロットルボディ、８……吸気通路FIG. 1 is a schematic configuration diagram showing an embodiment of an intake device according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG.
It is a sectional view taken along the line I-III. 1 ... Engine body, 4 ... Intake port 5 ... Intake manifold 6 ... Surge tank, 6C ... Tank top 6D ... Tank bottom, 6E ... Rib section 7 ... Throttle body, 8 ... Intake passage
Claims (1)
トと燃焼室に空気を供給するポートとを有した合成樹脂
製のサージタンクを備えたエンジンにおいて、前記サー
ジタンクに、前記両ポートのいずれもが接合されていな
い面を連結する少なくとも一つの中空リブ部を設けたこ
と、を特徴とするエンジンの吸気装置。1. An engine provided with a synthetic resin surge tank having a port for introducing air from a throttle body and a port for supplying air to a combustion chamber, wherein both of the surge tank and the both ports are provided. An intake device for an engine, comprising: at least one hollow rib portion that connects unbonded surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3981087A JPH081156B2 (en) | 1987-02-23 | 1987-02-23 | Engine intake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3981087A JPH081156B2 (en) | 1987-02-23 | 1987-02-23 | Engine intake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63208663A JPS63208663A (en) | 1988-08-30 |
| JPH081156B2 true JPH081156B2 (en) | 1996-01-10 |
Family
ID=12563320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3981087A Expired - Lifetime JPH081156B2 (en) | 1987-02-23 | 1987-02-23 | Engine intake system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081156B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010002323A (en) * | 1999-06-14 | 2001-01-15 | 정몽규 | Surge tank of engine for automobile |
| KR20040049083A (en) * | 2002-12-03 | 2004-06-11 | 현대자동차주식회사 | Intake system of gasoline engine |
-
1987
- 1987-02-23 JP JP3981087A patent/JPH081156B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63208663A (en) | 1988-08-30 |
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