JPS5851213A - Exhaust gas purifier for fuel injection type internal- combustion engine with supercharger - Google Patents
Exhaust gas purifier for fuel injection type internal- combustion engine with superchargerInfo
- Publication number
- JPS5851213A JPS5851213A JP14774881A JP14774881A JPS5851213A JP S5851213 A JPS5851213 A JP S5851213A JP 14774881 A JP14774881 A JP 14774881A JP 14774881 A JP14774881 A JP 14774881A JP S5851213 A JPS5851213 A JP S5851213A
- Authority
- JP
- Japan
- Prior art keywords
- air
- passage
- supercharger
- fuel
- exhaust gas
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Supercharger (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は過給機付の燃料噴射内燃機関における排気ガス
浄化装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas purification device for a fuel injection internal combustion engine equipped with a supercharger.
過給機付の内燃機関は、吸気管を通る吸入空気の量を過
給機の作用で強制的に増大させ、出力の増大を図るもの
である。しかしながら、吸入空気量の増大は燃料の量も
増すことがら排気管より外部に放出される排気ガス中の
未燃焼成分、即ち炭火水素（Ｈｅ）や−酸化炭素（ＣＯ
）、の甘も増大傾向となる。この傾向は内燃機関が燃料
噴射式のものであるときは特に助長される。即ち、イン
ジェクタよシ噴射された液体燃料が吸気ボートに付着す
ることや液体燃料と吸入空気とが混υ合う期間が気化器
式に比し短いことなどにょ多燃料の霧化が悪い。そのた
め排気管内に残留するＨＣ＋Ｃｏの量が増大するのであ
る。 。A supercharged internal combustion engine attempts to increase output by forcibly increasing the amount of intake air passing through an intake pipe through the action of the supercharger. However, an increase in the amount of intake air also increases the amount of fuel, which causes unburned components in the exhaust gas released from the exhaust pipe to the outside, such as hydrocarbons (He) and carbon oxides (CO).
), there is also an increasing trend of sweetness. This tendency is particularly exacerbated when the internal combustion engine is of the fuel injection type. That is, the liquid fuel injected by the injector adheres to the intake boat, and the period during which the liquid fuel and intake air are mixed is shorter than in the carburetor type, resulting in poor atomization of heavy fuel. Therefore, the amount of HC+Co remaining in the exhaust pipe increases. .
本発明は過給機料の燃料噴射内燃機関におけるかかる問
題に有効に対処できる構成を提供することを目的とする
。An object of the present invention is to provide a configuration that can effectively deal with such problems in a supercharged fuel-injected internal combustion engine.
以下図面によって説明すると、第１図において、（２）
１０は空気クリーナ、１１はエアーフローメータ、１２
は吸気管、１３はスロットル弁、１４はサージタンク、
１６は吸気マニホルド、１７は燃料噴射弁、１８はエン
ジン本体、１９は吸気弁、２゜は排気弁、２２は排気マ
ニホルドで、これらは電子制御燃料噴射内燃機関の基本
構成要素を示す。To explain with reference to the drawings below, in FIG. 1, (2) 10 is an air cleaner, 11 is an air flow meter, 12
is the intake pipe, 13 is the throttle valve, 14 is the surge tank,
16 is an intake manifold, 17 is a fuel injection valve, 18 is an engine body, 19 is an intake valve, 2° is an exhaust valve, and 22 is an exhaust manifold, which are the basic components of an electronically controlled fuel injection internal combustion engine.
尚、エアーフローメータ１１は吸入空気流量の検知を行
い、その吸入空気流量に見合った量の燃料の噴射を行う
。Note that the air flow meter 11 detects the intake air flow rate and injects an amount of fuel commensurate with the intake air flow rate.
過給システムは吸気管１２をパイ・ｆスするように設け
た過給導管２４．２６及びこれらの導管２４と２６との
間に位置する過給ポンプ２８よ構成る。The supercharging system consists of supercharging conduits 24, 26 disposed in the intake pipe 12 and a supercharging pump 28 located between these conduits 24 and 26.
この過給ポンプはエンジンのクランクシャフトによ）駆
動される機械式のものである。ポンプ２８の吐出側の導
管２６内には過給制御用の電気式開閉弁３０が設けられ
る。制御回路３４は、線１゜を介して開閉弁３０の作動
信号を出力する。スロットル弁１３の開度検知を子るス
ロットルポジショナ３２は線ｔ、を介して制御回路３４
に結線される。スロットル弁１３が所定開度のとき＋フ
サ３２よ多信号が入り電気式開閉弁３ｏを開放させ、吸
気管１２より導ｖ２４に吸引した空気を導管２６よ＃）
ｅｌ気管に再鳩入し、過給が行われる。尚、この過給時
スロットル弁１３とリンク連結される過給制御弁３５は
閉となり吸入空気を全てポンプ２８の側に分岐させ効率
的な過給を行う。尚、過給を行わないときは弁３５は開
放である。リリーフ弁４０はこの過給時の圧力調整を行
うもので過給圧が所定値となるとリリーフ導管４１．４
２を介して空気を吸気管１２に戻す。This supercharging pump is mechanical, driven by the engine's crankshaft. An electric on-off valve 30 for supercharging control is provided in the conduit 26 on the discharge side of the pump 28 . The control circuit 34 outputs an activation signal for the on-off valve 30 via the line 1°. A throttle positioner 32 that detects the opening of the throttle valve 13 is connected to a control circuit 34 via a line t.
is connected to. When the throttle valve 13 is at a predetermined opening degree, a multi-signal is received from the hood 32 to open the electric on-off valve 3o, and the air sucked from the intake pipe 12 into the conduit 24 is transferred to the conduit 26.
The pigeon is reintroduced into the el trachea and supercharging is performed. The supercharging control valve 35, which is linked to the throttle valve 13 during supercharging, is closed to branch all the intake air to the pump 28 for efficient supercharging. Note that the valve 35 is open when supercharging is not performed. The relief valve 40 adjusts the pressure during this supercharging, and when the supercharging pressure reaches a predetermined value, the relief conduit 41.4
2 to return the air to the intake pipe 12.
本発明によれば開閉弁３０の上流における導管２６にバ
イパス通路４２が接続され過給空気の一部の取出しを行
う。通路４２はバイ／４′ス通路４４を介して燃料噴射
ノズル１７に接続される。即ち、２流体噴射弁であるこ
の燃料噴射ノズル１７は第２図に示す如く、弁本体１７
１の内部にニードル弁１７２を設け、弁本体１７１の周
囲の保持スリーブ１７３を吸気マニホルド１６に締結し
て構成している。弁本体１７１とスリーｆ１７３との間
に環払空気路１７４が形成され、この通路１７４は下端
では水平の円形通路１７５を形成しこの通路１７５の中
央部において本体１７１の燃料噴射口１７６に連通ずる
と共にスリーブ１７３の空気噴射口１７７に連通ずる。According to the present invention, a bypass passage 42 is connected to the conduit 26 upstream of the on-off valve 30 to take out a portion of the supercharged air. The passage 42 is connected to the fuel injection nozzle 17 via a bi/4' bias passage 44. That is, this fuel injection nozzle 17, which is a two-fluid injection valve, has a valve body 17 as shown in FIG.
A needle valve 172 is provided inside the valve body 1 , and a holding sleeve 173 around the valve body 171 is fastened to the intake manifold 16 . A ring clearing air passage 174 is formed between the valve body 171 and the three f173, and this passage 174 forms a horizontal circular passage 175 at its lower end, and communicates with the fuel injection port 176 of the main body 171 at the center of this passage 175. It also communicates with the air injection port 177 of the sleeve 173.
ニードル弁１７２の先端１７８は燃料噴射口１７６よυ
円形通路１７５を横切シ空気噴射口１７７まで延びてい
る。スリーブ１７３には側口１７９が形成されこの側口
１７９に前記のバイパス通路４４が接続される。The tip 178 of the needle valve 172 is connected to the fuel injection port 176.
It extends across the circular passage 175 to an air injection port 177 . A side port 179 is formed in the sleeve 173, and the bypass passage 44 is connected to this side port 179.
尚、パイノヤス通路４４はリリーフ通路４８によって前
記のリリーフ通路４２に接続され、リリーフ弁５０がこ
のリリーフ通路４８に設けられる。The pinoyas passage 44 is connected to the relief passage 42 by a relief passage 48, and a relief valve 50 is provided in the relief passage 48.
本発明によればバイパス通路４２に接続する別ツバイノ
’？ス通路５２が設けられ、このバイパス通路５２はエ
ンジン本体１８内の排気弁２０に近接した排気ｙｊ？−
）５３に開口する空気噴射ノズル５４に接続する。電気
式開閉弁５６は通路５２に設けられ、線ｔ３を介して制
御回路３４に結線する。開閉弁５６の作動制御用の温度
センサ５８がエンジン本体の冷却水ジャケット６０内の
冷却水に接触するよう設けられ、温度検知信号を線ｔ４
を介して制御回路３４に印加する。According to the present invention, there is a separate tube connected to the bypass passage 42. A bypass passage 52 is provided, and this bypass passage 52 is connected to the exhaust yj? −
) 53 is connected to an air injection nozzle 54 which opens at 53. An electric on-off valve 56 is provided in the passage 52 and connected to the control circuit 34 via a line t3. A temperature sensor 58 for controlling the operation of the opening/closing valve 56 is provided so as to be in contact with the cooling water in the cooling water jacket 60 of the engine body, and the temperature sensor 58 is connected to the line t4.
is applied to the control circuit 34 via.
以下本発明の詳細な説明すると、スロットルポジショナ
３２によシ過給すべき運転駄態が検知されると制御１回
路３４は電気式開閉弁３０を開放し吸入空気を吸気管１
２よシ導管２４内に歩入れ導管２６よシ吸気管１２に圧
送するという過給作用を行うが、この際導管２６内の一
部の過給空気はバイパス通路４２に分流されバイパス通
路４４゜５２に向かう。バイパス通路４４の空気は側口
１７９から燃料噴射ノズルの周囲に形成された環牡の空
気路１７４に流入する。この環状の空気路に流入した空
気は通路１７５よシニードル１７２の開弁時燃料噴射口
１７６よシ噴射される燃料に対して横方向に衝突作用し
両者混合した牡態で空気噴射口１７７より噴出される。To explain the present invention in detail below, when the throttle positioner 32 detects an operational failure that requires supercharging, the control 1 circuit 34 opens the electric on-off valve 30 and supplies intake air to the intake pipe 1.
2, a supercharging effect is performed in which the supercharging air is fed into the conduit 24 and then forced into the intake pipe 12 through the conduit 26. At this time, a part of the supercharged air in the conduit 26 is diverted to the bypass passage 42 and passed through the bypass passage 44°. Head to 52. Air in the bypass passage 44 flows from a side port 179 into an annular air passage 174 formed around the fuel injection nozzle. The air that has flowed into this annular air passage collides with the fuel injected from the fuel injection port 176 through the passage 175 and the fuel injection port 176 when the valve of the needle 172 is opened in the lateral direction, and the air mixed with the fuel is ejected from the air injection port 177. be done.
かかる作用によシ徹粒化が促進しノズル１７からの噴射
燃料を吸気マニホルド１６内の吸入空気と良好に混合せ
しめることができる。そのだめ燃焼室内での燃焼が良好
に行われる。尚、リリーフ弁５０はパイノ４ス通路４４
内の圧力が所定値を超えると開閉し、これによシ空気噴
射口１７７から噴射される空気の圧力を単に燃料噴射口
１７６から噴射される燃料の圧力以下に維持し、円滑な
燃料噴射作動の妨げとならないよう働いている。This action promotes grain penetration and allows the fuel injected from the nozzle 17 to be mixed well with the intake air in the intake manifold 16. As a result, combustion within the combustion chamber is performed well. Note that the relief valve 50 is connected to the pinos passage 44.
It opens and closes when the internal pressure exceeds a predetermined value, thereby simply maintaining the pressure of the air injected from the air injection port 177 below the pressure of the fuel injected from the fuel injection port 176, resulting in smooth fuel injection operation. I am working hard to ensure that this does not get in the way.
バイパス通路５２に入った空気は開閉弁５６が開に位置
しているとき噴射ノズル５４よシ排気醪−ト５３に供給
される。開閉弁５６は、エンジン冷却水の温度が所定値
以下であるとセンサ５８が検知したとき、制御回路３４
からの信号で開放される。エンジン冷間時に空気が排気
ポート５３に圧送されることで、この運転時多く発生す
るお１気ガス中の未燃焼ＨＣ及びＣＯ酸成分燃焼除去が
実現する。そのため触媒コンバータが設けられている場
合はその暖機性が向上する。The air that has entered the bypass passage 52 is supplied to the exhaust liquor 53 through the injection nozzle 54 when the on-off valve 56 is in the open position. The on-off valve 56 is activated by the control circuit 34 when the sensor 58 detects that the temperature of the engine coolant is below a predetermined value.
It will be opened with a signal from. By forcing air into the exhaust port 53 when the engine is cold, it is possible to burn and remove unburned HC and CO acid components in the first gas, which are often generated during this operation. Therefore, when a catalytic converter is provided, its warm-up performance is improved.
以上述べた如く本発明によれば過給空気の一部を分岐し
燃料噴射ノズル１７及び冷間時は排気ポート５３に導入
することで未燃焼ＨＣ及びＣＯ酸成分排出を押えること
ができると共に、燃費率の向上が実現する。As described above, according to the present invention, by branching a part of the supercharging air and introducing it into the fuel injection nozzle 17 and the exhaust port 53 when it is cold, it is possible to suppress the discharge of unburned HC and CO acid components, and Improved fuel efficiency is realized.
第１図は本発明の装置の全体構成シ１、第２図は燃料噴
射ノズルの先端部の構成を示す拡大図
１７・・・燃料噴射ノズル、２８・・・過給ポンプ、４
２．４４．５２・・・分岐通路、５３・・・排気ポート
、５４・・・空気噴射ノズル、５６・・・開閉弁、５８
・・・温度センサ、１７４・・・空気路３゜
竹許出願人
トヨタ自動車工業株式会社
特許出願代理人
弁理士 青 木 朗
弁理士 匹 舘 和 之
弁理士 吉 １）止 行
弁理士 山 口 昭 之Fig. 1 shows the overall configuration of the device of the present invention 1, and Fig. 2 is an enlarged view showing the configuration of the tip of the fuel injection nozzle 17...Fuel injection nozzle, 28...Supercharging pump, 4
2.44.52... Branch passage, 53... Exhaust port, 54... Air injection nozzle, 56... Open/close valve, 58
...Temperature sensor, 174...Air path 3゜Bamboo license Applicant Toyota Motor Corporation Patent agent Akira Aoki Patent attorney Kazuyuki Tate Patent attorney Yoshi 1) Stop Patent attorney Akira Yamaguchi this
Claims (1)
からの吐出空気の一部を分流させる分岐手段を有し、該
分岐手段は、機関からの未燃焼成分の排出量を低減する
ことができる機関の位置に接続されている排気ガス浄化
装置。 ２、特許請求の範囲第１項に記載の発明において、上記
分岐手段は、過給機からの空気を機関の燃料噴射ノズル
の周囲に形成される空気路に導入するバイパス通路よ構
成る排気ガス浄化装置０３、特許請求の範囲第１項に記
載の発明において、上記分岐手段は、過給機からの空気
を機関の排気ポートに形成された空気噴射ノズルに導入
するバイパス通路と、該バイパス通路を機関の温度に応
じて開閉する感温弁手段とよ構成る排気ガス浄化装置。 （１） −へ[Claims] 1. A fuel-injected internal combustion engine equipped with a supercharger, which includes branching means for diverting a portion of air discharged from the supercharger, and the branching means separates unburned components from the engine. Exhaust gas purification device connected to the engine position can reduce the emissions of. 2. In the invention set forth in claim 1, the branching means comprises a bypass passage that introduces air from the supercharger into an air passage formed around a fuel injection nozzle of the engine. In the purification device 03, the invention set forth in claim 1, the branching means includes a bypass passage that introduces air from the supercharger to an air injection nozzle formed in an exhaust port of the engine, and the bypass passage. An exhaust gas purification device consisting of a temperature-sensitive valve means that opens and closes depending on the engine temperature. (1) to -
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14774881A JPS5851213A (en) | 1981-09-21 | 1981-09-21 | Exhaust gas purifier for fuel injection type internal- combustion engine with supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14774881A JPS5851213A (en) | 1981-09-21 | 1981-09-21 | Exhaust gas purifier for fuel injection type internal- combustion engine with supercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5851213A true JPS5851213A (en) | 1983-03-25 |
Family
ID=15437246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14774881A Pending JPS5851213A (en) | 1981-09-21 | 1981-09-21 | Exhaust gas purifier for fuel injection type internal- combustion engine with supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851213A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318240A (en) * | 1986-07-10 | 1988-01-26 | Nippon Telegr & Teleph Corp <Ntt> | Scleroscope measure with angle self-correcting function |
| FR2670837A1 (en) * | 1990-12-22 | 1992-06-26 | Daimler Benz Ag | INTERNAL COMBUSTION COMBUSTION ENGINE WITH MIXTURE OF SECONDARY AIR AND MEASUREMENT OF AIR FLOW INTO THE INTAKE PIPE. |
| GR1001154B (en) * | 1992-02-11 | 1993-05-24 | Konstantinos Malamopoulos | Device reducing incomplete combustion in internal combustion engines. |
| FR2696504A1 (en) * | 1992-10-06 | 1994-04-08 | Renault | Additional air injector for internal combustion engine - includes combustion chamber, principal inlet air conduit,and evacuation outlet conduit for burnt gases, with inlets and outlets controlled by cam operated valves |
| JP2008180177A (en) * | 2007-01-25 | 2008-08-07 | Toyota Motor Corp | Exhaust emission control system for internal combustion engine |
-
1981
- 1981-09-21 JP JP14774881A patent/JPS5851213A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6318240A (en) * | 1986-07-10 | 1988-01-26 | Nippon Telegr & Teleph Corp <Ntt> | Scleroscope measure with angle self-correcting function |
| JPH0444226B2 (en) * | 1986-07-10 | 1992-07-21 | Nippon Telegraph & Telephone | |
| FR2670837A1 (en) * | 1990-12-22 | 1992-06-26 | Daimler Benz Ag | INTERNAL COMBUSTION COMBUSTION ENGINE WITH MIXTURE OF SECONDARY AIR AND MEASUREMENT OF AIR FLOW INTO THE INTAKE PIPE. |
| GR1001154B (en) * | 1992-02-11 | 1993-05-24 | Konstantinos Malamopoulos | Device reducing incomplete combustion in internal combustion engines. |
| FR2696504A1 (en) * | 1992-10-06 | 1994-04-08 | Renault | Additional air injector for internal combustion engine - includes combustion chamber, principal inlet air conduit,and evacuation outlet conduit for burnt gases, with inlets and outlets controlled by cam operated valves |
| JP2008180177A (en) * | 2007-01-25 | 2008-08-07 | Toyota Motor Corp | Exhaust emission control system for internal combustion engine |
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