JPS6033992B2 - Diesel engine fuel supply method and device - Google Patents
Diesel engine fuel supply method and deviceInfo
- Publication number
- JPS6033992B2 JPS6033992B2 JP2047481A JP2047481A JPS6033992B2 JP S6033992 B2 JPS6033992 B2 JP S6033992B2 JP 2047481 A JP2047481 A JP 2047481A JP 2047481 A JP2047481 A JP 2047481A JP S6033992 B2 JPS6033992 B2 JP S6033992B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- gas
- diesel engine
- injection
- injection pump
- 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
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
- F02M71/00—Combinations of carburettors and low-pressure fuel-injection apparatus
- F02M71/02—Combinations of carburettors and low-pressure fuel-injection apparatus with fuel-air mixture being produced by the carburettor and being compressed by a pump for subsequent injection into main combustion-air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
【発明の詳細な説明】
本発明はディーゼルエンジンの燃料中に気体を混合させ
、噴射ポンプによって高圧とした後燃焼室中へ噴射する
ようにした燃料供給方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for supplying fuel to a diesel engine, in which gas is mixed in fuel, the mixture is brought to high pressure by an injection pump, and then injected into a combustion chamber.
ディーゼルエンジンでは、燃焼室中に噴射した燃料と空
気との混合を良好にするため、給入空気にスワールを与
えたり、圧縮上死点近くでのスキッシュ流を利用したり
している。In a diesel engine, in order to improve the mixing of the fuel injected into the combustion chamber with the air, a swirl is given to the intake air or a squish flow near compression top dead center is used.
上記公知技術は、全て給気側に工夫をこらせたり、燃焼
室の形状に工夫をこらせたりするものであり、燃料自体
を改良するものではない。All of the above-mentioned known techniques involve making improvements to the air supply side or the shape of the combustion chamber, and do not improve the fuel itself.
そこで、本発明の目的は燃料鰭霧の内部に気泡を発生さ
せ、燃料液滴を微粒化せんとする新規な方法及び装置を
提供するにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a novel method and apparatus for generating bubbles inside fuel fin mist to atomize fuel droplets.
ディーゼルエンジンの燃料では、燃料中に空気が混合す
ることをきらうのが通常であるが、本発明では積極的に
空気又はその他の気体を混合させるものである。Although it is normal to avoid mixing air into the fuel for diesel engines, the present invention actively mixes air or other gases.
以下、図によって−実施例を説明すると燃料タンク１内
の燃料はフィードポンプ２によって昇圧され、噴射ポン
プ３に導入される。Hereinafter, an embodiment will be described with reference to the drawings. Fuel in a fuel tank 1 is pressurized by a feed pump 2 and introduced into an injection pump 3.
噴射ポンプ３を出た高圧燃料は噴射ノズル４を介して燃
焼室５内へ噴射される。以上は通常のディーゼルエンジ
ンの燃料供給方法及び装置と同一であるが、本発明では
噴射ポンプ３の上流にミキサー６を設け、該ミキサー６
よりも上流に空気導入管７を設ける。The high-pressure fuel leaving the injection pump 3 is injected into the combustion chamber 5 via the injection nozzle 4. The above is the same as the fuel supply method and device for a normal diesel engine, but in the present invention, a mixer 6 is provided upstream of the injection pump 3, and the mixer 6
An air introduction pipe 7 is provided upstream of the air introduction pipe 7.
空気導入管７はコンブレッサー８と連絡し、所定値まで
昇圧された空気を燃料中に注入する。又、燃料中に混入
された空気泡の増大を防止するには燃料が常に流動して
いなければならないので、噴射ポンプ３の入口付近にリ
ターン通路９を設け、空気混合状態の燃料の一部を燃料
タンクーへ戻す。The air introduction pipe 7 communicates with a compressor 8, and injects air pressurized to a predetermined value into the fuel. In addition, since the fuel must be constantly flowing in order to prevent the air bubbles mixed into the fuel from increasing, a return passage 9 is provided near the inlet of the injection pump 3 to remove a portion of the air-mixed fuel. Return to fuel tank.
上言己構成による作用は以下のとおりである。The effects of the above-mentioned construction are as follows.
燃料タンクー内の燃料はフィードポンプ２によって僅か
に昇圧され、噴射ポンプ３へ導かれるが、フィードポン
プ２を出た燃料に空気導入管７から空気が注入される。
この空気注入は燃料圧と空気圧の関連によっては困難と
なるので、注入空気圧をコンブレッサー８により所定値
となして行つ。さて、空気が注入された燃料は、未だ空
気泡と燃料とのミキシングが良くないのでミキサー６に
より損拝する。The fuel in the fuel tank is slightly pressurized by the feed pump 2 and guided to the injection pump 3, and air is injected into the fuel exiting the feed pump 2 from the air introduction pipe 7.
Since this air injection becomes difficult depending on the relationship between fuel pressure and air pressure, the air pressure to be injected is adjusted to a predetermined value using the compressor 8. Now, the fuel into which air has been injected is still not well mixed with the air bubbles, so it is destroyed by the mixer 6.
ミキサー６による蝿洋を行うと「燃料中に多数の微粒気
泡が均一に分配されるものとなり、この状態で噴射ポン
プ３へ導入される。噴射ポンプ３は燃料を２０舷咳以上
の高圧に圧縮するので、燃料中の気泡は燃料中に溶け込
むか或いは極微４・な状態となって実質的に燃料でマナ
の状態となる。噴射ポンプ３で圧縮されて高圧となった
空気混入燃料を噴射ノズル４から燃焼室５内へ噴射する
。すると、燃料中に存在していた空気が階霧の内部から
気泡となって発生し、噴露された燃料を混合し、かつ贋
霧燃料の液滴を破壊させて更に微粒化させる。このため
、燃焼室５内での燃料が改善され、燃費が向上し、カー
ボン、ＨＣ、ＣＯ等の生成が低減されるものとなる。When the mixer 6 performs the blowing, a large number of fine air bubbles are uniformly distributed in the fuel, and in this state it is introduced into the injection pump 3.The injection pump 3 compresses the fuel to a high pressure of 20 molar or higher. As a result, the air bubbles in the fuel dissolve into the fuel or become microscopic, making it essentially a state of mana.The aerated fuel compressed by the injection pump 3 to high pressure is injected into the injection nozzle. 4 into the combustion chamber 5. Then, the air present in the fuel is generated as bubbles from inside the floor mist, mixes the sprayed fuel, and causes droplets of false fuel to form. The particles are destroyed and further atomized.Therefore, the amount of fuel in the combustion chamber 5 is improved, fuel efficiency is improved, and the generation of carbon, HC, CO, etc. is reduced.
以上の説明において、圧縮空気圧を制御するため、圧力
制御弁を空気導入管へ設けることが望ましい。In the above description, in order to control compressed air pressure, it is desirable to provide a pressure control valve in the air introduction pipe.
本発明ではミキサーの構成は、燃料と気体とを混合させ
る全ての構成を含むものである。In the present invention, the configuration of the mixer includes all configurations for mixing fuel and gas.
さらに、本発明では注入気体として空気を採用るだけで
はなく、水素、ＥＧＲガス等種々の気体を採用しうるも
のである。Furthermore, in the present invention, not only air is used as the injection gas, but also various gases such as hydrogen and EGR gas can be used.
水素を混合させるものでは低質燃料の使用が可能となる
ものであり、ＥＧＲガスを混合させるものではＮ○×生
成量を抑えながらカーボン、ＨＣ、ＣＯ等の生成を抑え
ることができるようになる。さらに又、本発明は予め燃
料タンクの燃料中に気体を混入させて置くことを除外す
るものでもない。A fuel that mixes hydrogen makes it possible to use low-quality fuel, and a fuel that mixes EGR gas makes it possible to suppress the production of carbon, HC, CO, etc. while suppressing the amount of N○× produced. Furthermore, the present invention does not exclude the possibility of mixing gas into the fuel in the fuel tank in advance.
以上説明したように、本発明によると噴射ノズルから噴
射された贋霧の給気への気化、混合を良好とし、燃費の
改善、殊にカーボン、ＨＣ、ＣＯの低減を達成しうるも
のである。As explained above, according to the present invention, it is possible to improve the vaporization and mixing of the false mist injected from the injection nozzle into the supply air, thereby achieving improvement in fuel efficiency, especially reduction in carbon, HC, and CO. .
図は本発明の一実施例を示す略系統図である。 The figure is a schematic system diagram showing one embodiment of the present invention.
Claims (1)
ポンプへ送り込み、該噴射ポンプから出た高圧燃料を噴
射ノズルを介して燃燃室内へ噴射するデイーゼルエンジ
ンの燃料供給方法において、気体を燃料中に混合し、こ
れを噴射ポンプに導入して気体を燃料中に溶解し、気体
の溶解した燃料を噴射ノズルから噴射し、噴霧中で気体
を発生させて燃料の液滴を破壊し、燃料の液滴の微粒化
及び燃料と気体との混合を促進することを特徴とするデ
イーゼルエンジンの燃料供給方法。 ２ 燃料タンク内の燃料をフイードポンプによつて噴射
ポンプへ送り込み、該噴射ポンプから出た高圧燃料を噴
射ノズルを介して燃焼室内へ噴射するデイーゼルエンジ
ンの燃料供給装置において、噴射ポンプの上流に燃料中
の気体を混合させるミキサーを設け、該ミキサーの上流
に気体注入手段を設け、気体を噴射ポンプによつて溶解
し、該気体の溶解した燃料を噴射ノズルから噴射して噴
霧中で気体を発生させて燃料の液滴を破壊し、燃料の液
滴の微粒化及び燃料と気体との混合を促進することを特
徴とするデイーゼルエンジンの燃料供給装置。[Scope of Claims] 1. A fuel supply method for a diesel engine in which fuel in a fuel tank is fed to an injection pump by a feed pump, and high-pressure fuel discharged from the injection pump is injected into a combustion chamber through an injection nozzle, Mix the gas with the fuel, introduce it into the injection pump to dissolve the gas in the fuel, and inject the dissolved fuel from the injection nozzle to generate the gas in the spray and break up the fuel droplets. A method for supplying fuel to a diesel engine, characterized in that the atomization of fuel droplets and the mixing of fuel and gas are promoted. 2. In a fuel supply system for a diesel engine that feeds fuel in a fuel tank to an injection pump by a feed pump and injects high-pressure fuel discharged from the injection pump into a combustion chamber through an injection nozzle, a fuel tank is installed upstream of the injection pump. A mixer for mixing the gases is provided, a gas injection means is provided upstream of the mixer, the gas is dissolved by an injection pump, and the fuel in which the gas is dissolved is injected from an injection nozzle to generate the gas in the spray. 1. A fuel supply device for a diesel engine, characterized in that the fuel droplets are destroyed by using the fuel droplets, and the atomization of the fuel droplets and the mixing of the fuel and gas are promoted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2047481A JPS6033992B2 (en) | 1981-02-14 | 1981-02-14 | Diesel engine fuel supply method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2047481A JPS6033992B2 (en) | 1981-02-14 | 1981-02-14 | Diesel engine fuel supply method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57135251A JPS57135251A (en) | 1982-08-20 |
| JPS6033992B2 true JPS6033992B2 (en) | 1985-08-06 |
Family
ID=12028098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2047481A Expired JPS6033992B2 (en) | 1981-02-14 | 1981-02-14 | Diesel engine fuel supply method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033992B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455245Y2 (en) * | 1986-01-23 | 1992-12-25 | ||
| AU1161692A (en) * | 1991-01-21 | 1992-08-27 | Epro Ag | Process and device for improving the atomisation of fuel in internal combustion engines |
| EP0769101B1 (en) * | 1994-07-04 | 2000-02-02 | Airtron Engineering AG . | Process for improving fuel spraying in internal combustion engines |
| DE19624352C2 (en) * | 1996-06-19 | 1998-07-02 | Reinhard Regele | Method and device for admixing additives into a fluid flow |
| CN104100420A (en) * | 2008-07-03 | 2014-10-15 | Hrd有限公司 | System for generating aerated fuels |
| RU2476716C1 (en) * | 2012-03-20 | 2013-02-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная сельскохозяйственная академия" | Diesel engine two-fuel feed system with automatic mix composition control |
| RU2484290C1 (en) * | 2012-04-16 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" | Dual-fuel tractor diesel engine feed system |
| RU2484291C1 (en) * | 2012-04-27 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная сельскохозяйственная академия" | Dual-fuel diesel engine feed system |
| CN105257442A (en) * | 2015-11-13 | 2016-01-20 | 吉林大学 | Engine fuel supply air-fuel mixing device and fuel atomization method |
-
1981
- 1981-02-14 JP JP2047481A patent/JPS6033992B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57135251A (en) | 1982-08-20 |
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