JPS5828583A - Exhaust gas circulating device - Google Patents
Exhaust gas circulating deviceInfo
- Publication number
- JPS5828583A JPS5828583A JP56120162A JP12016281A JPS5828583A JP S5828583 A JPS5828583 A JP S5828583A JP 56120162 A JP56120162 A JP 56120162A JP 12016281 A JP12016281 A JP 12016281A JP S5828583 A JPS5828583 A JP S5828583A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- insert
- gas recirculation
- gas circulating
- outlet
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、自動車における排気ガス還流装置の改良に関
するもので、さらに詳しくは、自動車における内燃機関
排気ガスの一部を吸気系に還流させてＮＯｘの発生を抑
制するようにした排気ガス還流装置の排出ガス還流系に
おける不純物堆積いわゆるデポジットの生成を押え、あ
るいはガス流量の減少を防止する装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an exhaust gas recirculation device for an automobile, and more specifically, to an improvement in an exhaust gas recirculation device for an automobile, and more specifically, for suppressing the generation of NOx by recirculating a part of the internal combustion engine exhaust gas in an automobile to the intake system. The present invention relates to a device for suppressing the formation of impurity accumulation, so-called deposits, in the exhaust gas recirculation system of an exhaust gas recirculation system, or for preventing a decrease in gas flow rate.
自動車における排気ガス還流系のうち、特にデポジット
による排気ガス還流系の閉塞が問題となるのは、混合気
のインテーク系に連通させるようにした排気ガスの流入
口付近である。Among the exhaust gas recirculation systems in automobiles, blockage of the exhaust gas recirculation system by deposits is particularly problematic near the exhaust gas inlet that communicates with the air-fuel mixture intake system.
従来、この部位に′おけるデポジットの堆積を防止する
方法としては、該流入口付近を断熱したり、と−タ等に
より加温したりしてＥＧＲガスの冷却によるデポジット
の生成を抑制する技術が多く採られている。Conventionally, methods for preventing deposits from accumulating in this area include techniques that suppress the formation of deposits by cooling the EGR gas by insulating the vicinity of the inlet or heating it with a heater, etc. It is widely taken.
しかし、この従来技術は必ずしも有効ではないのであっ
て、たとえば、排気ガスのインテーク系での流入口付近
での再循環ガスの流れに滞留があるような場合、その滞
留部を中心としてデポジットが堆積、生成するのである
。However, this conventional technology is not necessarily effective; for example, if there is a stagnation in the flow of recirculated gas near the inlet of the exhaust gas intake system, deposits may accumulate around the stagnation area. , it generates.
本発明の発明者等は、従来技術における上記の諸問題を
解消するため種々研究した結果、該ガス滞留部における
ガスの流れを機構的に円滑にすると共にガス流路のｆｆ
ｉ面を滑らかにすることが最も該デギジット防止に貢献
するものであることに想到したのである。As a result of various studies to solve the above-mentioned problems in the prior art, the inventors of the present invention have made the flow of gas in the gas retention section mechanically smooth and the ff of the gas flow path.
They came up with the idea that smoothing the i-plane would most contribute to preventing the digitization.
つまり、第５図、第５図に示す従来例についていうと、
吸気管１の側壁に取付けられた排気ガス環流管２から排
気ガスが流入する場合、その流れの方向がｌきく変化す
る部位”＋Ｙでは、ガスが滞留し、した゛がって還流管
２０曲り部分にカーボン等の固形物Ａが堆積し易い。そ
して、その固形物の堆積のためガス流路山積が狭くなり
必要な排気ガス還流量を長期に供給することが難しくな
る。であるから、この”＋１部分にインサートを設け、
ガスが円滑に流れるようにすれば、以上の問題は解決で
きるわけである。In other words, regarding the conventional example shown in FIGS.
When exhaust gas flows in from the exhaust gas recirculation pipe 2 attached to the side wall of the intake pipe 1, the gas stagnates at the part "+Y" where the direction of the flow changes significantly, and therefore the recirculation pipe 20 bends. Solid matter A such as carbon is likely to accumulate in the exhaust gas.The accumulation of solid matter narrows the gas flow path, making it difficult to supply the necessary amount of exhaust gas recirculation for a long period of time. An insert is provided in the +1 part,
The above problems can be solved by allowing the gas to flow smoothly.
また、上記カーボン等の固形物の堆積はガス流路の粗さ
とも関係があるので、上記ｘ、ｙ部分の壁面も滑らかに
しなければならないのである。Furthermore, since the accumulation of solids such as carbon is related to the roughness of the gas flow path, the wall surfaces of the x and y portions must also be made smooth.
本発明は、以上において述べた知見に基づいてなされた
もので、以下その第１の実施例を示す第１図について説
明する。The present invention has been made based on the knowledge described above, and will be described below with reference to FIG. 1 showing a first embodiment thereof.
この第１の実施例は、排気ガス流路の曲がり部分の形状
が緩慢な曲がりでなく直角等に曲がっている場合に本発
明を実施した例である。このように、排気ガス流路が曲
がっていると、この曲がり部分において還流排気ガスの
流れが乱れることとなりカーボン等が堆積し易いので、
図示の如く排気ガス還流ｆ２の出口にこれと口径を同じ
くシ、かつ、緩やかに吸気通路４の力〉に湾曲したイン
サート（管体）３を該曲がり部分２′を蔽うようにして
取付け、整流板のＩＩＩＡ能をもたせたものである。This first embodiment is an example in which the present invention is implemented in a case where the shape of the curved portion of the exhaust gas flow path is not a gradual curve but a curve at a right angle or the like. If the exhaust gas flow path is curved in this way, the flow of the recirculated exhaust gas will be disturbed at this curved part, and carbon etc. will be likely to accumulate.
As shown in the figure, an insert (pipe body) 3 having the same diameter as the exhaust gas recirculation f2 and gently curved by the force of the intake passage 4 is attached to the outlet of the exhaust gas recirculation f2 so as to cover the curved portion 2', and the flow is rectified. It has the IIIA function of a board.
第２図は、本発明の第２実施例を示すもので、吸気管１
が鋳物ｍ等である場合に、本発明を実施した例である。FIG. 2 shows a second embodiment of the present invention, in which an intake pipe 1
This is an example in which the present invention is implemented when is a casting m or the like.
吸気管１が鋳物等で作られている場合、ガス還流通路の
内壁向が滑らかでないためにカーボン等が付着、堆積し
易い。そのため本実施例では、その内壁面の粗さを補う
ため管状または半管状の鋼板、銅パイプ製等のインサー
ト３′を該曲がり部２′内＃！面を蔽うようにして取付
け、滑らかな壁面を実現し、カーボン等の付着堆積を減
少させるようにしたものである。When the intake pipe 1 is made of cast metal or the like, the inner wall of the gas recirculation passage is not smooth, so that carbon and the like tend to adhere and accumulate thereon. Therefore, in this embodiment, in order to compensate for the roughness of the inner wall surface, a tubular or semi-tubular insert 3' made of steel plate, copper pipe, etc. is inserted into the bent portion 2'. It is installed so as to cover the surface, creating a smooth wall surface and reducing the adhesion and accumulation of carbon and other substances.
なお、インサート５′の腐蝕を防止し表面の滑らかさを
保持するためには、テフロン等の耐熱樹脂の塗布または
ステン？、ス鋼等を使用してもよい。In addition, in order to prevent corrosion of the insert 5' and maintain its surface smoothness, apply heat-resistant resin such as Teflon or stainless steel. , steel, etc. may also be used.
第４図、第６図は、本元明のその他の実施例を示すもの
で、排気ガス還流通路２と吸気通路４とがはぼ直角に合
流する場合における本発明の実施例である。この例にお
いては、インサー＞ｓｌは吸気通路４の吸気方向または
その反対方向に向けて開放するように排気ガス還流管２
に取付けられている。本例のような場合３ま、排気ガス
還流管２の出口の対面の内壁面にカーボン等の付着亀釦
噸も多くみられる（第５図参照）ので、本例のようにイ
ンサート３を取付けれ＆１、これを防止することができ
るわけである。FIGS. 4 and 6 show other embodiments of the present invention, in which the exhaust gas recirculation passage 2 and the intake passage 4 merge at a nearly right angle. In this example, the inserter>sl is arranged so that the exhaust gas recirculation pipe 2 opens toward the intake direction of the intake passage 4 or the opposite direction.
installed on. In case 3, as in this example, there are many spots of carbon etc. adhering to the inner wall surface opposite the outlet of exhaust gas recirculation pipe 2 (see Figure 5), so install insert 3 as in this example. 1, this can be prevented.
本発明は、以上の構、成により、自動車にお＆する排気
ガス還流装置におけるデボジツ）付着、堆積を有効に防
止しうるちのである。The present invention, with the above-described configuration, can effectively prevent deposits and build-up in exhaust gas recirculation devices installed in automobiles.
第５ｇ及び第５図は、従来例を示す縦断面図、第１図は
本発明の第１実施例を示す縦断面図、第２図は本発明の
第２実施例を・示す縦断面図、第４図及び第６図は本発
明のその他の実施例を示す縦断面図である。
２・−排気ガス還流管
５ 、 Ｓ’−・・インサート
矛Ｉ図
才２１ａ
才３図
矛４１図5g and 5 are vertical cross-sectional views showing the conventional example, FIG. 1 is a vertical cross-sectional view showing the first embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing the second embodiment of the present invention. , FIG. 4, and FIG. 6 are longitudinal sectional views showing other embodiments of the present invention. 2.-Exhaust gas recirculation pipe 5, S'--Insert I figure 21a 3 figure 41
Claims (1)
気ガス還流管の開口部に排気ガスの整流用のインサート
を取付けたこと番特徴とする自動車における排気ガス速
流装置。(1) An exhaust gas fast flow device for an automobile, characterized in that an insert for rectifying exhaust gas is attached to the opening of an exhaust gas recirculation pipe that communicates with an air-fuel mixture intake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56120162A JPS5828583A (en) | 1981-07-31 | 1981-07-31 | Exhaust gas circulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56120162A JPS5828583A (en) | 1981-07-31 | 1981-07-31 | Exhaust gas circulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5828583A true JPS5828583A (en) | 1983-02-19 |
Family
ID=14779480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56120162A Pending JPS5828583A (en) | 1981-07-31 | 1981-07-31 | Exhaust gas circulating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828583A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023738A1 (en) * | 1999-09-24 | 2001-04-05 | Filterwerk Mann+Hummel Gmbh | Fluid inlet for a hot fluid into a hollow structure |
| JP2009517581A (en) * | 2005-11-29 | 2009-04-30 | ボルボ ラストバグナー アーベー | Exhaust gas recirculation mixer for internal combustion engine with turbocharge |
| JP2014055540A (en) * | 2012-09-12 | 2014-03-27 | Mitsubishi Automob Eng Co Ltd | Exhaust gas recirculation device |
| JP2016121632A (en) * | 2014-12-25 | 2016-07-07 | 三菱電機株式会社 | valve |
| WO2017087062A1 (en) * | 2015-11-18 | 2017-05-26 | General Electric Company | System and method fo exhaust gas recirculation |
-
1981
- 1981-07-31 JP JP56120162A patent/JPS5828583A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001023738A1 (en) * | 1999-09-24 | 2001-04-05 | Filterwerk Mann+Hummel Gmbh | Fluid inlet for a hot fluid into a hollow structure |
| US6672292B2 (en) | 1999-09-24 | 2004-01-06 | Filterwerk Mann & Hummel Gmbh | Fluid inlet for introducing a hot fluid into a hollow structure |
| JP2009517581A (en) * | 2005-11-29 | 2009-04-30 | ボルボ ラストバグナー アーベー | Exhaust gas recirculation mixer for internal combustion engine with turbocharge |
| JP2014055540A (en) * | 2012-09-12 | 2014-03-27 | Mitsubishi Automob Eng Co Ltd | Exhaust gas recirculation device |
| JP2016121632A (en) * | 2014-12-25 | 2016-07-07 | 三菱電機株式会社 | valve |
| WO2017087062A1 (en) * | 2015-11-18 | 2017-05-26 | General Electric Company | System and method fo exhaust gas recirculation |
| US9926891B2 (en) | 2015-11-18 | 2018-03-27 | General Electric Company | System and method of exhaust gas recirculation |
| CN108474326A (en) * | 2015-11-18 | 2018-08-31 | 通用电气公司 | The system and method for exhaust gas recirculatioon |
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