JPH0232824Y2 - - Google Patents
Info
- Publication number
- JPH0232824Y2 JPH0232824Y2 JP1983105739U JP10573983U JPH0232824Y2 JP H0232824 Y2 JPH0232824 Y2 JP H0232824Y2 JP 1983105739 U JP1983105739 U JP 1983105739U JP 10573983 U JP10573983 U JP 10573983U JP H0232824 Y2 JPH0232824 Y2 JP H0232824Y2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- swirl
- porous body
- air
- intake passage
- 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
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
この考案はシリンダ内に吸気を導入するエンジ
ンの吸気機構の改良に関する。[Detailed Description of the Invention] This invention relates to an improvement in an engine intake mechanism that introduces intake air into a cylinder.
一般に、エンジンの燃焼効率を高めるために従
来から第１図に示すようにエンジンの吸気通路１
にスワールタング部２を設け、吸気通路１から吸
気弁３を介してシリンダ４内に供給される空気或
いは混合気等の吸気に強いスワール（渦流）を発
生させる構成にしたものが開発されている。この
種のものではスワールタング部２の突出量を変化
させることによりスワールの強さが大きく変化
し、第２図に示すようにスワールタング部２の突
出量を大きくすることにより強いスワールが得ら
れることが知られている。 Generally, in order to improve the combustion efficiency of an engine, the intake passage 1 of the engine has been conventionally shown in FIG.
A structure has been developed in which a swirl tongue portion 2 is provided in the intake passage 1 to generate a strong swirl in the intake air such as air or air mixture supplied into the cylinder 4 via the intake valve 3. . In this type of device, the strength of the swirl changes greatly by changing the amount of protrusion of the swirl tongue portion 2, and as shown in Fig. 2, a strong swirl can be obtained by increasing the amount of protrusion of the swirl tongue portion 2. It is known.
ところで、吸気通路１の側壁にスリツト状の噴
射孔を設け、この噴射孔から吸気通路１側に加圧
空気を噴射してスワールの強さを調整することが
考えられている。しかしながら、このようなスリ
ツト状の噴流では加圧空気の噴射速度が大きくな
り易く、吸気通路１内を流れる主流の流れを乱し
てしまう問題があるとともに、スリツト状の局所
的な噴流では吸気通路１内を流れる主流との流量
差が大き過ぎるので、主流の流れの方向を適正な
状態で変化させることは困難であり、スワールの
強さ調整を有効に行なうことができなかつたのが
実情であつた。 By the way, it has been considered to provide a slit-shaped injection hole in the side wall of the intake passage 1 and to inject pressurized air from the injection hole toward the intake passage 1 side to adjust the strength of the swirl. However, in such a slit-shaped jet stream, the injection velocity of the pressurized air tends to increase, which causes a problem of disturbing the mainstream flow flowing inside the intake passage 1. In addition, in the slit-shaped localized jet stream, the injection velocity of the pressurized air tends to increase, and the flow of the main flow inside the intake passage 1 is disturbed. Since the difference in flow rate between the main flow and the main flow flowing through the main flow is too large, it is difficult to change the direction of the flow of the main flow in an appropriate state, and the actual situation is that the strength of the swirl cannot be adjusted effectively. It was hot.
この考案は上記事情を考慮してなされたもの
で、その目的は、吸気通路内を流れる吸気主流の
流れを乱すことなく有効に流れの方向を変化させ
てスワールの強さ調整を行なうことができるエン
ジンの吸気機構を提供することにある。 This idea was made in consideration of the above circumstances, and its purpose is to effectively change the direction of the flow of mainstream air flowing through the intake passage without disturbing it, thereby adjusting the strength of the swirl. The purpose is to provide an intake mechanism for an engine.
以下、この考案の一実施例を第３図乃至第５図
を参照して説明する。第３図乃至第５図におい
て、１１はエンジンの吸気通路、１２は吸気弁で
ある。この場合、吸気通路１１には吸気弁１２近
傍の壁面に吸気スワール発生用のスワールタング
部１１ａが形成されている。このスワールタング
部１１ａには切欠部１３が形成されている。そし
て、この切欠部１３には焼結合金からなる多孔質
体１４が嵌着されている。この場合、多孔質体１
４の焼結合金には全体に亙り無数の孔部（多孔
部）が形成されている。また、この多孔質体１４
の背部には加圧空気を供給する空気供給管（空気
供給路）１５の先端部が挿入されている。この空
気供給管１５の先端部には多数の小孔１６…が設
けられている。さらに、この空気供給管１５の中
間部には開閉弁１７が設けられている。そして、
開閉弁１７が開操作され、空気供給管１５の多数
の小孔を介して多孔質体１４に加圧空気が供給さ
れた場合にはこの加圧空気が多孔質体１４の焼結
合金全体に亙り形成されている無数の孔部を介し
て吸気通路１１側に噴射されるようになつてお
り、加圧空気の噴流を多孔質体１４の全面から略
一様に面状に分布させた状態で噴射する面状噴流
噴出部１９が形成されている。 An embodiment of this invention will be described below with reference to FIGS. 3 to 5. In FIGS. 3 to 5, 11 is an intake passage of the engine, and 12 is an intake valve. In this case, a swirl tongue portion 11a for generating an intake swirl is formed on a wall surface of the intake passage 11 near the intake valve 12. A notch 13 is formed in this swirl tongue portion 11a. A porous body 14 made of a sintered alloy is fitted into this notch 13. In this case, porous body 1
Numerous pores (porous portions) are formed throughout the sintered alloy of No. 4. Moreover, this porous body 14
The tip of an air supply pipe (air supply path) 15 for supplying pressurized air is inserted into the back of the unit. A large number of small holes 16 are provided at the tip of the air supply pipe 15. Further, an on-off valve 17 is provided in the middle of the air supply pipe 15. and,
When the on-off valve 17 is opened and pressurized air is supplied to the porous body 14 through the large number of small holes in the air supply pipe 15, this pressurized air is applied to the entire sintered alloy of the porous body 14. The air is injected toward the intake passage 11 through numerous holes formed throughout the porous body 14, and the jet stream of pressurized air is distributed substantially uniformly over the entire surface of the porous body 14. A planar jet ejecting portion 19 is formed to eject the air.
次に、上記構成の作用について説明する。 Next, the operation of the above configuration will be explained.
まず、エンジンの駆動中、開閉弁１７が閉状態
で保持されている場合には吸気はエンジンの吸気
通路１１内を通り、吸気弁１２を介してシリンダ
１８内に導入される。この場合、第４図に示すよ
うにシリンダ１８内に導入される吸気の流れには
スワールタング部１１ａによつてスワールが形成
される。 First, when the on-off valve 17 is kept closed while the engine is running, intake air passes through the intake passage 11 of the engine and is introduced into the cylinder 18 via the intake valve 12. In this case, as shown in FIG. 4, a swirl is formed in the flow of intake air introduced into the cylinder 18 by the swirl tongue portion 11a.
また、エンジンの駆動中、開閉弁１７が開操作
されると適宜の加圧空気供給源から空気供給管１
５を介して多孔質体１４側に加圧空気が供給され
る。この場合、空気供給管１５から供給される加
圧空気は空気供給管１５の多数の小孔を介して多
孔質体１４内に導入され、さらにこの多孔質体１
４の焼結合金全体に亙り形成されている無数の孔
部を通して吸気通路１１側に噴射される。そのた
め、この場合には第５図に示すように多孔質体１
４の全面から略一様に加圧空気を吸気通路１１側
に噴射させることができるので、多孔質体１４全
面の広い範囲に亙り略面状に分布させた状態の噴
流を得ることができる。そして、この面状の噴流
によつて吸気通路１１内を流れる吸気の主流を押
圧し、吸気通路１１内を流れる吸気主流の流れの
方向を意図する方向に片寄らせる状態に効率よく
変化させることができ、吸気のスワールの強さを
調整することができる。 In addition, when the on-off valve 17 is opened while the engine is running, the air supply pipe 1 is connected to an appropriate pressurized air supply source.
Pressurized air is supplied to the porous body 14 side via 5. In this case, pressurized air supplied from the air supply pipe 15 is introduced into the porous body 14 through a large number of small holes in the air supply pipe 15, and
The fuel is injected toward the intake passage 11 through countless holes formed throughout the sintered alloy No. 4. Therefore, in this case, as shown in FIG.
Since the pressurized air can be injected substantially uniformly toward the intake passage 11 from the entire surface of the porous body 14, it is possible to obtain a jet flow that is substantially planarly distributed over a wide range of the entire surface of the porous body 14. This planar jet presses the main flow of the intake air flowing in the intake passage 11 and efficiently changes the flow direction of the main flow of the intake air flowing in the intake passage 11 to a state where it is biased toward the intended direction. You can adjust the strength of the intake swirl.
そこで、上記構成のものにあつては吸気のスワ
ール強さの調整時には空気供給管１５から供給さ
れる加圧空気を空気供給管１５の多数の小孔を介
して多孔質体１４内に導入し、さらにこの多孔質
体１４の焼結合金全体に亙り形成されている無数
の孔部を通して吸気通路１１側に噴射させること
により、多孔質体１４の全面から略一様に加圧空
気を吸気通路１１側に噴射させ、多孔質体１４全
面の広い範囲に亙り略面状に分布させた状態の噴
流を得るようにしたので、必要最小限の空気量
で、かつ従来に比べて低速度で吸気通路１１側に
噴射させる加圧空気の噴流によつて吸気通路１１
内を流れる吸気の主流を効果的に押圧し、吸気通
路１１内を流れる吸気主流を意図する方向に片寄
らせる状態に効率よく変化させることができる。
そのため、従来のようにスリツト状の局所的な作
用域内に高速度で噴出される噴流によつて吸気通
路１１内を流れる吸気の主流を押圧する場合に比
べて吸気通路１１内を流れる吸気の主流の乱れを
少なくすることができ、効率よく吸気のスワール
の強さを調整することができる。 Therefore, in the case of the above structure, pressurized air supplied from the air supply pipe 15 is introduced into the porous body 14 through a large number of small holes in the air supply pipe 15 when adjusting the swirl strength of the intake air. Furthermore, by injecting pressurized air to the intake passage 11 side through countless holes formed throughout the sintered alloy of the porous body 14, pressurized air is almost uniformly supplied to the intake passage from the entire surface of the porous body 14. 11 side, and the jet stream is distributed in a substantially planar manner over a wide area over the entire surface of the porous body 14, so that air can be taken in with the minimum necessary amount of air and at a lower speed than in the past. The intake passage 11 is
It is possible to effectively press the main flow of intake air flowing inside the intake passage 11 and efficiently change the state in which the main flow of intake air flowing inside the intake passage 11 is biased in the intended direction.
Therefore, compared to the conventional case in which the main stream of the intake air flowing in the intake passage 11 is pressed by a jet jet ejected at high speed into a slit-shaped local action area, the main stream of the intake air flowing in the intake passage 11 is compressed. turbulence can be reduced, and the strength of the intake swirl can be efficiently adjusted.
なお、この考案は上記実施例に限定されるもの
ではなく、この考案の要旨を逸脱しない範囲で
種々変形実施できることは勿論である。 It should be noted that this invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of this invention.
以上説明したように、この考案によれば吸気通
路における吸気弁近傍の壁面にシリンダ内に導入
される吸気にスワールを発生させるスワールタン
グ部を形成し、このスワールタング部分に焼結合
金からなる多孔質体を配設するとともに、この多
孔質体に加圧空気を供給する空気供給路を連結
し、多孔質体を介して吸気通路側に面状に分布す
る噴流を噴射する面状噴流噴出部を形成したの
で、吸気通路内の吸気主流の流れを乱すことなく
効果的に流れの方向を変化させることができ、吸
気弁を介してシリンダ内に導入されるスワールの
強さ調整を有効に行なうことができる。 As explained above, according to this invention, a swirl tongue part that generates a swirl in the intake air introduced into the cylinder is formed on the wall surface of the intake passage near the intake valve, and this swirl tongue part has porous holes made of sintered alloy. A planar jet ejection section that includes a porous body, connects an air supply path that supplies pressurized air to the porous body, and injects a planarly distributed jet toward the intake passage through the porous body. , the flow direction can be effectively changed without disturbing the flow of the main intake air in the intake passage, and the strength of the swirl introduced into the cylinder via the intake valve can be effectively adjusted. be able to.
第１図および第２図は従来例を示すもので、第
１図は吸気通路を示す要部の横断面図、第２図は
スワールタング部の突出量を大きくした状態を示
す横断面図、第３図乃至第５図はこの考案の一実
施例を示すもので、第３図は吸気通路を示す要部
の斜視図、第４図は同横断面図、第５図は開閉弁
の開操作状態を示す横断面図である。
１１……吸気通路、１１ａ……スワールタング
部、１２……吸気弁、１４……多孔質体、１５…
…空気供給管（空気供給路）、１９……面状噴流
噴出部。
1 and 2 show a conventional example; FIG. 1 is a cross-sectional view of the main part showing the intake passage; FIG. 2 is a cross-sectional view showing a state in which the amount of protrusion of the swirl tongue portion is increased; Figures 3 to 5 show an embodiment of this invention. Figure 3 is a perspective view of the main part showing the intake passage, Figure 4 is a cross-sectional view of the same, and Figure 5 is a diagram showing the opening and closing of the on-off valve. FIG. 3 is a cross-sectional view showing an operating state. DESCRIPTION OF SYMBOLS 11... Intake passage, 11a... Swirl tongue part, 12... Intake valve, 14... Porous body, 15...
... Air supply pipe (air supply path), 19 ... Planar jet ejection part.
Claims (1)
を導入するエンジンの吸気機構において、前記吸
気通路における前記吸気弁近傍の壁面に前記シリ
ンダ内に導入される吸気にスワールを発生させる
スワールタング部を形成し、このスワールタング
部分に焼結合金からなる多孔質体を配設するとと
もに、この多孔質体に加圧空気を供給する空気供
給路を連結し、前記多孔質体を介して前記吸気通
路側に面状に分布する噴流を噴射する面状噴流噴
出部を形成したことを特徴とするエンジンの吸気
機構。 In an engine intake mechanism that introduces intake air into a cylinder from an intake passage through an intake valve, a swirl tongue portion that generates a swirl in intake air introduced into the cylinder is formed on a wall surface of the intake passage near the intake valve. A porous body made of a sintered alloy is disposed in this swirl tongue portion, and an air supply path for supplying pressurized air is connected to this porous body, and the porous body is connected to the intake passage side through the porous body. An intake mechanism for an engine, characterized in that a planar jet ejection section is formed to inject a planarly distributed jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10573983U JPS6012628U (en) | 1983-07-07 | 1983-07-07 | Engine intake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10573983U JPS6012628U (en) | 1983-07-07 | 1983-07-07 | Engine intake mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6012628U JPS6012628U (en) | 1985-01-28 |
| JPH0232824Y2 true JPH0232824Y2 (en) | 1990-09-05 |
Family
ID=30247723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10573983U Granted JPS6012628U (en) | 1983-07-07 | 1983-07-07 | Engine intake mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012628U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856120B2 (en) * | 1976-12-03 | 1983-12-13 | 株式会社日立製作所 | Pressure detector array method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856120U (en) * | 1981-10-12 | 1983-04-16 | トヨタ自動車株式会社 | Internal combustion engine intake system |
-
1983
- 1983-07-07 JP JP10573983U patent/JPS6012628U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856120B2 (en) * | 1976-12-03 | 1983-12-13 | 株式会社日立製作所 | Pressure detector array method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6012628U (en) | 1985-01-28 |
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