JPS6345456A - Injection device for gas-liquid mixture fuel - Google Patents
Injection device for gas-liquid mixture fuelInfo
- Publication number
- JPS6345456A JPS6345456A JP18895386A JP18895386A JPS6345456A JP S6345456 A JPS6345456 A JP S6345456A JP 18895386 A JP18895386 A JP 18895386A JP 18895386 A JP18895386 A JP 18895386A JP S6345456 A JPS6345456 A JP S6345456A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- bubbles
- gas
- injection
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 97
- 238000002347 injection Methods 0.000 title claims abstract description 51
- 239000007924 injection Substances 0.000 title claims abstract description 51
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 title abstract description 4
- 239000002828 fuel tank Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims 1
- 238000000889 atomisation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、気体と液体燃料をＵ合した状態の気液混合燃
料を機関に噴射する気液混合燃料の噴射装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a gas-liquid mixed fuel injection device that injects gas-liquid mixed fuel, which is a mixture of gas and liquid fuel, into an engine.
（従来技術及びその問題点）
従来からディーゼルエンジンの燃焼の改善には燃料を微
粒化して噴射することが重要であると知られている。特
に、低負荷時または低速高負荷時には、噴射圧が比較的
低く、燃料の微粒化が不十分で燃料の粒径が大きくなる
傾向がある。このため、燃焼が悪化し、排気煙が発生す
るという問題がある。(Prior Art and its Problems) It has been known that it is important to atomize fuel and inject it in order to improve combustion in diesel engines. In particular, when the load is low or when the load is low and high, the injection pressure is relatively low, the atomization of the fuel is insufficient, and the particle size of the fuel tends to increase. Therefore, there is a problem that combustion deteriorates and exhaust smoke is generated.
（発明の目的）
本発明は、内燃機関の燃焼を改善するために、噴射され
た燃料の微粒化を促進できる気液混合燃料の噴射装置を
提供することを目的としている。(Objective of the Invention) An object of the present invention is to provide a gas-liquid mixed fuel injection device that can promote atomization of injected fuel in order to improve combustion in an internal combustion engine.
（発明の構成）
（１）技術的手段
本発明は、燃料タンクから燃料噴射ポンプへ燃料を供給
する燃料配管の途中に、気泡を吹き込む空気配管を分岐
接続し、空気配管の接続位置より噴射ポンプに近い燃料
配管の途中に、燃料と気泡を微細に混合する撹拌装置を
設け、このは拌装置で混合された気液混合燃料を噴射ポ
ンプへ供給するようにしたことを特徴とする気液ｕ合燃
料の噴射装置である。(Structure of the Invention) (1) Technical Means The present invention connects an air pipe for blowing bubbles in the middle of a fuel pipe that supplies fuel from a fuel tank to a fuel injection pump, and injects fuel from the connection position of the air pipe to the injection pump. A gas-liquid U characterized in that a stirring device for finely mixing fuel and air bubbles is provided in the middle of the fuel pipe near the fuel pipe, and the gas-liquid mixed fuel mixed by the stirring device is supplied to the injection pump. This is a combined fuel injection device.
（２）作用
撹拌装置で気泡と燃料は均一な状態に混合され、気液混
合燃料を燃料噴射ポンプへ供給する。噴射ポンプで圧縮
された状態では気液混合燃料中の気泡は圧縮圧力で潰れ
てしまい、噴射弁から噴射されると同時に再び気泡が膨
圧して、燃料の微粒化を促進する。(2) Operation The bubbles and fuel are mixed in a uniform state by the stirring device, and the gas-liquid mixed fuel is supplied to the fuel injection pump. When the fuel is compressed by the injection pump, the air bubbles in the gas-liquid mixed fuel are crushed by the compression pressure, and as soon as the fuel is injected from the injection valve, the air bubbles expand again and promote atomization of the fuel.
（実施例）
本発明を採用したディーゼルエンジン用の燃料噴射装置
を示づ第１図において、１０は燃料タンクである。この
燃料タンク１０の底部には燃Ｆ１配管１２が接続されて
おり、燃料配管１２の端部は燃石噴（ト）ポンプ１４に
繋がっている。燃料配管１２には燃料タンク１０側から
フィルター１６、フィードポンプ１ぎ、音波撹拌装置２
０（１！拌装置）が順次に介装されている。なお、音波
撹拌装置２０は実公昭５８−２３３８３号に詳しく記載
されている。(Example) In FIG. 1 showing a fuel injection device for a diesel engine employing the present invention, 10 is a fuel tank. A fuel F1 pipe 12 is connected to the bottom of the fuel tank 10, and an end of the fuel pipe 12 is connected to a fuel stone injection pump 14. A filter 16, a feed pump 1, and a sonic agitator 2 are connected to the fuel pipe 12 from the fuel tank 10 side.
0 (1! Stirring devices) are successively installed. The sonic stirring device 20 is described in detail in Utility Model Publication No. 58-23383.
フィードポンプ１８と音波撹拌装置２０の間の燃料配管
１２には、空気配管２２が分岐接続しており、空気配管
２２の端部はエアタンク２４に繋がっている。この空気
配管２２にはエアタンク２４側から減圧弁２６、流岳計
２８、開閉弁３０が順次に介装されている。An air pipe 22 is branched and connected to the fuel pipe 12 between the feed pump 18 and the sonic agitator 20, and the end of the air pipe 22 is connected to an air tank 24. A pressure reducing valve 26, a flow meter 28, and an on-off valve 30 are installed in this air pipe 22 in this order from the air tank 24 side.
燃料配管１２から燃料噴射ポンプ１４に供給された気液
混合燃料は、燃料噴射ポンプ１４で圧縮され、各気筒の
噴射弁３２から各気筒に噴射されるようになっている。The gas-liquid mixed fuel supplied from the fuel pipe 12 to the fuel injection pump 14 is compressed by the fuel injection pump 14 and injected into each cylinder from the injection valve 32 of each cylinder.
燃料噴射ポンプ１４には自！７１調圧エア抜き弁３４が
備えられており、燃料噴射ポンプ１４から燃料タンク１
０へ還流する余剰燃料から気泡を取除いて、戻り配管３
６．３８から燃料タンク１０へ戻すようになっている。The fuel injection pump 14 has self! 71 pressure regulating air bleed valve 34 is provided, and the fuel injection pump 14 is connected to the fuel tank 1.
Air bubbles are removed from the excess fuel flowing back to the return pipe 3.
From 6.38 onwards, the fuel is returned to the fuel tank 10.
次に作用を説明する。第１図の装置では燃料タンク１０
から燃料配管１２を流れる燃料はフィードポンプ１８で
例えば２〜６υ／ｄ程度に加圧されて燃料噴射ポンプ１
４方向に流れる。フィードポンプ１８で加圧された後の
燃料には空気配管２２がら空気が吹き込まれる。空気配
管２２がら空気を吹き込むだけでは、燃料配管１２中に
比較的大きな気泡が不均一に混合している状態にしかな
らないので、音波撹拌装置２０で燃料と気泡を撹拌し、
極めて微小な気泡が燃料中に均一に混合している気液混
合燃料を作る。Next, the effect will be explained. In the device shown in Fig. 1, the fuel tank 10
The fuel flowing through the fuel pipe 12 is pressurized by the feed pump 18 to, for example, about 2 to 6 υ/d, and is then sent to the fuel injection pump 1.
Flows in 4 directions. Air is blown into the fuel after being pressurized by the feed pump 18 through an air pipe 22. Merely blowing air through the air pipe 22 will only result in relatively large air bubbles being mixed unevenly in the fuel pipe 12, so the sonic stirring device 20 is used to stir the fuel and air bubbles.
Creates a gas-liquid mixed fuel in which extremely small air bubbles are evenly mixed in the fuel.
この気液混合燃料は燃料噴射ポンプ１４に供給され、燃
料噴射ボンダ１４で例えば８００ Ｋ９ ／ ｃｉ程度
の高圧に圧縮されて噴射弁３２から噴射される。気液混
合燃料が燃料噴射ポンプ１４で圧縮されると、前記微小
気泡は圧縮圧力で押し潰されて略完全な液状になる。液
状の燃料が噴射弁３２から噴射されると、急激に圧縮圧
力が低下して、押し潰されている気泡が再び膨圧し、こ
の気泡の膨圧で噴射弁３２から噴射される燃料の微粒化
を促進する。This gas-liquid mixed fuel is supplied to the fuel injection pump 14, compressed by the fuel injection bonder 14 to a high pressure of, for example, about 800 K9/ci, and injected from the injection valve 32. When the gas-liquid mixed fuel is compressed by the fuel injection pump 14, the microbubbles are crushed by the compression pressure and become almost completely liquid. When liquid fuel is injected from the injection valve 32, the compression pressure suddenly decreases, the crushed bubbles expand again, and the expansion pressure of the bubbles atomizes the fuel injected from the injection valve 32. promote.
したがって、噴射弁３２から噴射される燃料は従来より
大幅に微粒化され、デイ−ぜルエンジンの燃焼改善に大
きな効果がある。Therefore, the fuel injected from the injection valve 32 is much more atomized than in the past, which has a great effect on improving the combustion of the diesel engine.
燃料噴射ポンプ１４で噴射されずに、戻り配管３６．３
８から燃料タンク１０へ還流する気液混合燃料中にも当
然に微小気泡が含まれているので、燃料噴射ポンプ１４
の自動調圧エア抜き弁３４でエア抜きをした後に、戻り
配管３６．３８から燃料タンク１０へ燃料を戻す。The return pipe 36.3 is not injected by the fuel injection pump 14.
8 to the fuel tank 10 naturally contains microbubbles, so the fuel injection pump 14
After air is removed by the automatic pressure regulating air release valve 34, the fuel is returned to the fuel tank 10 from the return piping 36, 38.
（発明の効果）
以上説明したように本発明による気液混合燃料の噴射装
置は、燃料タンク１０から燃料噴射ポンプ１４へ燃料を
供給する燃料配管１２の途中に、気泡を吹き込む空気配
管２２を分岐接続し、燃料配管１２の途中に、燃料と気
泡を混合する音波撹拌装置２０を設け、この音波撹拌装
置２０で混合された気液混合燃料を噴射ポンプ１４へ供
給するようにしたので、気液混合燃料が燃料噴射ポンプ
１４で圧縮されると、前記微小気泡は圧縮圧力で押し潰
されて略完全な液状になり、この液状の燃料を噴射弁３
２から噴射して、急激に圧縮圧力を低下させ、押し潰さ
れている気泡を再び膨圧させることができ、この気泡の
膨圧で噴射弁３２から噴射される燃料の微粒化を促進で
きる。(Effects of the Invention) As described above, the gas-liquid mixed fuel injection device according to the present invention branches the air pipe 22 for blowing air bubbles into the fuel pipe 12 that supplies fuel from the fuel tank 10 to the fuel injection pump 14. A sonic stirring device 20 for mixing fuel and air bubbles is provided in the middle of the fuel pipe 12, and the gas-liquid mixed fuel mixed by this sonic stirring device 20 is supplied to the injection pump 14. When the mixed fuel is compressed by the fuel injection pump 14, the microbubbles are crushed by the compression pressure and become almost completely liquid, and this liquid fuel is injected into the injection valve 3.
2, the compression pressure is suddenly lowered, and the crushed bubbles can be expanded again, and the expansion pressure of the bubbles can promote atomization of the fuel injected from the injection valve 32.
したがって、噴射弁３２から噴射される燃料は従来より
大幅に微粒化され、微粒化の「進によりディーゼルエン
ジンの燃焼を大幅に改善することができる。Therefore, the fuel injected from the injection valve 32 is much more atomized than in the past, and the combustion of the diesel engine can be significantly improved due to the atomization.
（別の実施例）
（１） 本発明は以上の１実論例に限らず、例えば第２
図にポリように、燃料タンク１０に仕切り板１０ａ（！
−設けて燃料噴射ポンプ１４から戻ってくる燃料中の気
泡を分離してもよいし、フィードポンプ１８より上流側
に分岐接続される空気配管２２に電磁弁４０、空気流過
調整用絞り４２を設け、フィルター４４から空気を吸入
するようにしてもよい。(Another embodiment) (1) The present invention is not limited to the above-mentioned one practical example, but also
As shown in the figure, there is a partition plate 10a (!) on the fuel tank 10.
- Air bubbles in the fuel returning from the fuel injection pump 14 may be separated by installing a solenoid valve 40 and an air flow adjustment throttle 42 in the air pipe 22 branched and connected upstream from the feed pump 18. A filter 44 may be provided to draw air from the filter 44.
第１図は本発明を採用したディーゼルエンジン用の燃料
噴射装置を示す構造略図、第２図は別の実施例を示す構
造略図である。１０・・・燃料タンク、１２・・・燃料
配管、１４・・・燃料噴射ポンプ、１８・・・フィード
ポンプ、２０・・・音波撹拌装置、２２・・・空気配管
、３２・・・噴射弁、３４・・・自動調圧エア汰き弁FIG. 1 is a structural diagram showing a fuel injection device for a diesel engine employing the present invention, and FIG. 2 is a structural diagram showing another embodiment. DESCRIPTION OF SYMBOLS 10... Fuel tank, 12... Fuel piping, 14... Fuel injection pump, 18... Feed pump, 20... Sonic stirring device, 22... Air piping, 32... Injection valve , 34...Automatic pressure regulating air sump valve
Claims (3)
燃料配管の途中に、気泡を吹き込む空気配管を分岐接続
し、空気配管の接続位置より噴射ポンプに近い燃料配管
の途中に、燃料と気泡を混合する撹拌装置を設け、この
撹拌装置で混合された気液混合燃料を噴射ポンプへ供給
するようにしたことを特徴とする気液混合燃料の噴射装
置。(1) Connect an air pipe that blows bubbles into the fuel pipe that supplies fuel from the fuel tank to the fuel injection pump, and inject fuel and air bubbles into the fuel pipe that is closer to the injection pump than the connection point of the air pipe. 1. An injection device for a gas-liquid mixed fuel, characterized in that a stirring device for mixing is provided, and the gas-liquid mixed fuel mixed by the stirring device is supplied to an injection pump.
装されている特許請求の範囲第１項記載の気液混合燃料
の噴射装置。(2) The gas-liquid mixed fuel injection device according to claim 1, wherein the air pipe is provided with an air tank, a pressure reducing valve, and a flow meter.
エア抜き弁が設けられている特許請求の範囲第１項記載
の気液混合燃料の噴射装置。(3) The gas-liquid mixed fuel injection device according to claim 1, wherein the fuel injection pump is provided with an automatic air bleed valve for discharging excess air bubbles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18895386A JPS6345456A (en) | 1986-08-12 | 1986-08-12 | Injection device for gas-liquid mixture fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18895386A JPS6345456A (en) | 1986-08-12 | 1986-08-12 | Injection device for gas-liquid mixture fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6345456A true JPS6345456A (en) | 1988-02-26 |
Family
ID=16232809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18895386A Pending JPS6345456A (en) | 1986-08-12 | 1986-08-12 | Injection device for gas-liquid mixture fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6345456A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393076A (en) * | 1990-07-26 | 1995-02-28 | Taiho Kogyo Co., Ltd. | Metal gasket with base plate having coatings of diverse thicknesses |
| EP0814254A1 (en) * | 1996-06-19 | 1997-12-29 | Reinhard Dipl.-Ing. Regele | Process and device for admixing additives into a fluid stream |
| DE10133357C1 (en) * | 2001-07-13 | 2003-03-13 | Mtu Friedrichshafen Gmbh | Control and regulation method for IC engine adjusts air component of fuel/air mixture supplied to engine |
| JP2011503442A (en) * | 2007-11-20 | 2011-01-27 | アルティミット コンバスチョン コーポレイション | Liquid fuel adjustment method and system |
-
1986
- 1986-08-12 JP JP18895386A patent/JPS6345456A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393076A (en) * | 1990-07-26 | 1995-02-28 | Taiho Kogyo Co., Ltd. | Metal gasket with base plate having coatings of diverse thicknesses |
| US5472217A (en) * | 1990-07-26 | 1995-12-05 | Taiho Kogyo Co., Ltd. | Metal gasket |
| EP0814254A1 (en) * | 1996-06-19 | 1997-12-29 | Reinhard Dipl.-Ing. Regele | Process and device for admixing additives into a fluid stream |
| DE10133357C1 (en) * | 2001-07-13 | 2003-03-13 | Mtu Friedrichshafen Gmbh | Control and regulation method for IC engine adjusts air component of fuel/air mixture supplied to engine |
| JP2011503442A (en) * | 2007-11-20 | 2011-01-27 | アルティミット コンバスチョン コーポレイション | Liquid fuel adjustment method and system |
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