JP3303619B2 - Fuel supply device for internal combustion engine - Google Patents
Fuel supply device for internal combustion engineInfo
- Publication number
- JP3303619B2 JP3303619B2 JP22998595A JP22998595A JP3303619B2 JP 3303619 B2 JP3303619 B2 JP 3303619B2 JP 22998595 A JP22998595 A JP 22998595A JP 22998595 A JP22998595 A JP 22998595A JP 3303619 B2 JP3303619 B2 JP 3303619B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- cylinder
- cylinders
- fuel injection
- fuel
- 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 - Fee Related
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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は先端に複数の方向へ噴射
可能な少なくとも１つ以上のオリフィスを設けた燃料噴
射弁を用い、１個の燃料噴射弁で内燃機関の複数の気筒
に燃料を供給するようにした多気筒内燃機関の燃料噴射
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a fuel injection valve having at least one orifice at its tip which is capable of injecting fuel into a plurality of directions. Fuel injection for multi-cylinder internal combustion engine
Related to the device .
【０００２】[0002]
【従来の技術】従来の多気筒内燃機関の燃料噴射方法と
して、各気筒毎に燃料噴射弁を持つものが一般的である
が、噴射弁自体のコストが高いため各気筒毎に噴射弁を
取付け使用することは装置全体のコストも上昇させるこ
とになる。2. Description of the Related Art As a conventional fuel injection method for a multi-cylinder internal combustion engine, a fuel injection valve is generally provided for each cylinder. However, since the cost of the injection valve itself is high, an injection valve is provided for each cylinder. Use also increases the cost of the entire device.
【０００３】この対策として、特開昭５６−４１４５２
号公報、特開昭５９−３９９６５号公報等に記載された
ように、多気筒内燃機関の吸気分岐管に対応して噴射方
向が定められた１つの噴射弁で複数の気筒に燃料を噴射
する方法が提案されている。あるいはまた、特開昭６１
−８７９６８号公報や特開昭６４−６３６４８号公報、
特開平２−２０７１７２号公報等に記載されたように、
複数の燃料噴射口を備えた一個の燃料噴射弁から噴射さ
れた燃料を分配管を介して多気筒内燃機関の各気筒に導
く方法も提案されている。特開平２−２０７１７２号公
報によれば内燃機関の１回転に１回あるいは２回、いず
れかの気筒の吸気行程において各気筒同時に燃料を噴射
するように構成されている。As a countermeasure against this, Japanese Patent Laid-Open Publication No.
As described in JP-A-59-39965, fuel is injected into a plurality of cylinders by a single injection valve having an injection direction determined corresponding to an intake branch pipe of a multi-cylinder internal combustion engine. A method has been proposed. Alternatively, Japanese Patent Application Laid-Open
-87968 and JP-A-64-63648,
As described in JP-A-2-207172, etc.,
There has also been proposed a method of guiding fuel injected from one fuel injection valve having a plurality of fuel injection ports to each cylinder of a multi-cylinder internal combustion engine via a distribution pipe. According to Japanese Patent Laying-Open No. 2-207172, fuel is simultaneously injected into each cylinder once or twice in one revolution of the internal combustion engine during an intake stroke of any one of the cylinders.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記前
者のように構成された燃料噴射装置では、燃料噴射弁の
取付け位置、空気の流れ方向と燃料の噴射方向、燃料の
噴射タイミングとの関係などの影響で各気筒に均一に燃
料を供給できないという欠点があった。その結果、各気
筒間の燃料分配が悪化するという問題があった。さら
に、内燃機関の回転数が高い場合と低い場合とでは、吸
気分岐管内の空気流れが大きく異なり、その結果、各気
筒間の燃料分配特性が安定せず、エンジン出力の低下
や、排出ガス中の有害成分の増加を招く可能性があっ
た。However, in the fuel injection device constructed as described above, the mounting position of the fuel injection valve, the relationship between the air flow direction and the fuel injection direction, the fuel injection timing, etc. There was a drawback that fuel could not be supplied uniformly to each cylinder due to the influence. As a result, there is a problem that fuel distribution between the cylinders is deteriorated. Furthermore, the air flow in the intake manifold differs greatly between the case where the internal combustion engine speed is high and the case where the engine speed is low. As a result, the fuel distribution characteristics between the cylinders are not stable, the engine output is reduced, and Harmful components may be increased.
【０００５】一方、後者の方法は、分配管を介して燃料
を各気筒に供給するため、各気筒間の燃料分配は適切に
維持されるが、吸気分岐管内における空気と燃料の混合
が良好に行われないため、完全な燃焼が期待できないと
いう問題があった。また、燃料を各気筒に供給するため
の分配管を用いることは、構造が複雑で、部品点数が増
加し、コストアップの要因となる。On the other hand, in the latter method, fuel is supplied to each cylinder via a distribution pipe, so that the fuel distribution between the cylinders is appropriately maintained, but the mixing of air and fuel in the intake branch pipe is excellent. There is a problem that complete combustion cannot be expected because it is not performed. In addition, using a distribution pipe for supplying fuel to each cylinder has a complicated structure, increases the number of parts, and increases the cost.
【０００６】本発明の目的は、一個の燃料噴射弁で複数
の気筒に燃料を供給する多気筒内燃機関の燃料噴射装置
において、燃料をできるだけ均等にかつ安定して各気筒
に分配できるようにする構成を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a fuel injection device for a multi-cylinder internal combustion engine that supplies fuel to a plurality of cylinders with a single fuel injection valve so that fuel can be distributed to each cylinder as uniformly and stably as possible. It is to provide a configuration .
【０００７】本発明の他の目的は、一個の燃料噴射弁で
複数の気筒に燃料を供給する多気筒内燃機関の燃料噴射
装置において、簡単な構成で燃料を各気筒に分配できる
と共に、空気と燃料の混合も十分な構成を提供すること
にある。Another object of the present invention is to provide a fuel injection system for a multi-cylinder internal combustion engine that supplies fuel to a plurality of cylinders with one fuel injection valve. Fuel mixing is also to provide a sufficient configuration .
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に本発明では、吸入空気の量を制御する絞弁を備えた絞
弁組立体と、前記絞弁組立体に接続され、出口には多気
筒エンジンの各シリンダに空気を分岐供給する吸気経路
と、前記吸気経路に取付けられた１個の燃料噴射弁とを
備えた内燃機関の燃料供給装置において、前記吸気経路
は、前記入口付近から前記エンジンの各気筒へ分岐して
放射状に延びた複数の吸気分岐管を含んでおり、各吸気
分岐管は前記燃料噴射弁の取付け位置から前記エンジン
の各気筒の吸気口付近まで、縦、横いずれの断面で見て
も、ほぼ直線状に延びており、前記燃料噴射弁は前記各
気筒に対応するオリフィスを備えており、前記各オリィ
スが前記放射状に延びた各吸気分岐管の方向に沿って前
記エンジンの各気筒の吸気口を向いており、前記燃料噴
射弁による燃料の噴射タイミングとして、前記複数の気
筒のうち両端のいずれかの気筒が吸入行程にあるときを
燃料噴射禁止位置とし、これ以外の領域で、前記燃料噴
射弁から前記各気筒へ分配噴射することを特徴とする。According to the present invention, there is provided a throttle valve assembly having a throttle valve for controlling an amount of intake air, and a throttle valve assembly connected to the throttle valve assembly and having an outlet. In a fuel supply device for an internal combustion engine having an intake path for branching and supplying air to each cylinder of a multi-cylinder engine, and one fuel injection valve attached to the intake path, the intake path extends from near the inlet. The fuel injection valve includes a plurality of intake branch pipes that branch into each cylinder of the engine and extend radially. The fuel injection valve has an orifice corresponding to each of the cylinders, and the orifice extends along the direction of each of the radially extending intake branch pipes. The engine Faces the inlet, as the injection timing of fuel by the fuel injection valve, one of the cylinders at both ends of the plurality of cylinders when in the suction stroke
A fuel injection inhibition position, in which other regions, characterized by dispensing injected into the fuel injection valve or found before Symbol each cylinder.
【０００９】本発明の他の特徴は、吸入空気の量を制御
する絞弁を備えた絞弁組立体と、前記絞弁組立体に接続
され、出口には多気筒エンジンの各シリンダに空気を分
岐供給する吸気経路と、前記吸気経路に取付けられた１
個の燃料噴射弁とを備えた内燃機関の燃料供給装置にお
いて、前記吸気経路は、前記入口付近から前記エンジン
の各気筒へ分岐して放射状に延びた複数の吸気分岐管を
含んでおり、各吸気分岐管は前記燃料噴射弁の取付け位
置から前記エンジンの各気筒の吸気口付近まで、縦、横
いずれの断面で見ても、ほぼ直線状に延びており、前記
燃料噴射弁は前記各気筒に対応するオリフィスを備えて
おり、前記各オリィスが前記放射状に延びた各吸気分岐
管の方向に沿って前記エンジンの各気筒の吸気口を向い
ており、前記燃料噴射弁による燃料の噴射タイミングと
して、複数の気筒のうち、通常は、中間に位置する気筒
または気筒群の吸気行程を基準にして、該気筒または気
筒群の排気行程の後半位置から吸気行程の前半位置まで
を含む位置において噴射を行い、前記中間の気筒または
気筒群の吸気行程の後半位置は、割込み増幅巾として利
用し、これらの領域で、前記燃料噴射弁から前記各気筒
へ分配噴射することにある。Another feature of the present invention is a throttle valve assembly having a throttle valve for controlling the amount of intake air, and a throttle valve connected to the throttle valve assembly and having an outlet for supplying air to each cylinder of a multi-cylinder engine. An intake path that branches and supplies, and a 1 that is attached to the intake path.
In the fuel supply device for an internal combustion engine having a plurality of fuel injection valves, the intake path includes a plurality of intake branch pipes radially extending from the vicinity of the inlet to each of the cylinders of the engine. The intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in both vertical and horizontal cross sections, and the fuel injection valve is connected to each of the cylinders. And each orifice faces the intake port of each cylinder of the engine along the direction of each radially extending intake branch pipe, and the orifice corresponds to the fuel injection timing by the fuel injection valve. , Among the cylinders , usually the cylinder located in the middle
Or, based on the intake stroke of the cylinder group,
From the latter half position of the exhaust stroke to the first half position of the intake stroke of the cylinder group
Injection at the position including, the intermediate cylinder or
The latter half of the intake stroke of the cylinder group is used as an interrupt amplification width.
In these areas, the fuel injection valve performs distributed injection to each of the cylinders.
【００１０】[0010]
【作用】燃料噴射弁から吸気経路へ噴射された燃料は、
吸気経路において吸入空気と混合しながら内燃機関に供
給される。このとき、燃料の噴霧流は、各気筒の吸入行
程等による吸入空気流の方向の影響を受ける。本発明に
よれば、１個の燃料噴射弁が気筒数に対応した数のオリ
フィスを備えており、前記吸気経路は、前記入口付近か
ら前記エンジンの各気筒へ分岐して放射状に延びた複数
の吸気分岐管を含んでおり、各吸気分岐管は前記燃料噴
射弁の取付け位置から前記エンジンの各気筒の吸気口付
近まで、縦、横いずれの断面で見ても、ほぼ直線状に延
びており、前記燃料噴射弁は前記各気筒に対応するオリ
フィスを備えており、前記各オリィスが前記放射状に延
びた各吸気分岐管の方向に沿って前記エンジンの各気筒
の吸気口を向いている。従って、１個の燃料噴射弁から
複数の方向に分配噴射され広がりながら進む燃料が前記
エンジン吸気経路の壁面に最初に衝突する位置は、各吸
気分岐管のエンジン吸気口にかなり近い位置となり、吸
気分岐管の途中で壁面に付着する可能性は少ない。従っ
て、エンジンの各気筒における空気と燃料との混合空燃
比が正確に維持され完全な燃焼が期待できる。また、本
発明によれば、燃料噴射弁による吸気経路への燃料噴射
タイミングは、複数の気筒のうち両端のいずれかの気筒
が吸入行程にあるときを燃料噴射禁止位置とし、これ以
外の領域で、燃料噴射弁から前記各気筒へ分配噴射され
る。このように本発明によれば、特徴的な吸気経路の構
造と燃料噴射タイミングの組み合わせによって、１個の
燃料噴射弁から吸気経路へ噴射された燃料は、常に、吸
気行程にある第２気筒等、中央あるいは中央付近に位置
する気筒に向かうように方向性が与えられ、左右いずれ
かの側に偏ることがない。従って、燃料の噴霧の方向が
常に安定しており、その結果、複数の気筒に対する燃料
の分配特性が良くなる。また、吸気分岐管の途中で壁面
に付着する可能性が少なく、エンジンの各気筒における
空気と燃料との空燃比が正確に維持され、完全な燃焼が
期待できる。The fuel injected from the fuel injection valve into the intake path is
The air is supplied to the internal combustion engine while being mixed with the intake air in the intake path. At this time, the fuel spray flow is affected by the direction of the intake air flow due to the intake stroke of each cylinder. According to the present invention, one fuel injection valve is provided with a number of orifices corresponding to the number of cylinders, and the intake path branches from the vicinity of the inlet to each cylinder of the engine and extends radially. An intake branch pipe is included, and each intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in any of vertical and horizontal cross sections. The fuel injection valve has an orifice corresponding to each of the cylinders, and each of the orifices faces an intake port of each of the cylinders of the engine along a direction of each of the radially extending intake branch pipes. Therefore, the position where the fuel distributed and injected in a plurality of directions from one fuel injection valve and spreading and colliding with the wall first collides with the wall surface of the engine intake passage is located very close to the engine intake port of each intake branch pipe. The possibility of sticking to the wall in the middle of the branch pipe is small. Therefore, the mixture air-fuel ratio of air and fuel in each cylinder of the engine is accurately maintained, and complete combustion can be expected. Further, according to the present invention, the timing of fuel injection into the intake path by the fuel injection valve is set at any one of the cylinders at both ends of the plurality of cylinders.
Is in the fuel injection prohibition position when
In the outer region, fuel is distributed and injected from the fuel injection valve to each of the cylinders. As described above, according to the present invention, the fuel injected from one fuel injection valve to the intake passage is always in the intake stroke of the second cylinder or the like due to the characteristic combination of the intake passage structure and the fuel injection timing. , directional so as to be directed into the cylinder which is located near the center or the center gives et al is, never deviated to the left or right side. Therefore, the direction of fuel spray is always stable, and as a result, the fuel distribution characteristics to the plurality of cylinders are improved. Further, there is little possibility of adhering to the wall surface in the middle of the intake branch pipe, the air-fuel ratio of air and fuel in each cylinder of the engine is accurately maintained, and complete combustion can be expected.
【００１１】また、複数の気筒のうち両端、例えば３気
筒のうち第１、第３気筒、４気筒であれば第１、第４気
筒のいずれかが吸入行程にあるときを燃料噴射禁止位置
としてもよい。これ以外の領域が燃料噴射可能位置とな
る。この実施例でも上記と同じ理由で、各気筒に対する
燃料の分配特性が良くなる。The fuel injection prohibition position is set when both of the plurality of cylinders, for example, among the three cylinders, the first, third, and four cylinders are in the intake stroke. Is also good. The other area is the position where fuel injection is possible. Also in this embodiment, for the same reason as described above, the fuel distribution characteristic to each cylinder is improved.
【００１２】本発明によれば、燃料が均等にかつ安定し
てエンジンの各気筒に分配される。また、一個の燃料噴
射弁で複数の気筒に燃料を供給する多気筒内燃機関の燃
料噴射装置において、簡単な構成で燃料を各気筒に分配
できると共に、空気と燃料の混合も十分な方法及び構成
を提供することができる。According to the present invention, the fuel is uniformly and stably distributed to each cylinder of the engine. Further, in a fuel injection device for a multi-cylinder internal combustion engine that supplies fuel to a plurality of cylinders with one fuel injection valve, the fuel can be distributed to each cylinder with a simple configuration, and the mixing of air and fuel can be sufficiently performed. Can be provided.
【００１３】本発明によれば全体の容積がコンパクトに
なり、特に軽自動車にとって好適な燃料噴射装置が得ら
れる。According to the present invention, the overall volume is made compact, and a fuel injection device particularly suitable for a mini vehicle can be obtained.
【００１４】[0014]
【実施例】以下、本発明の一実施例を説明する。まず、
図１は、本発明が適用される燃料噴射装置のシステム構
成図を示している。１はエアクリーナ、２は吸入空気の
量を制御する絞弁を備えた絞弁組立体すなわちスロット
ルボディである。３はコレクタであり、入口に絞弁組立
体２が取付けられ、出口にはエンジン５の各気筒に空気
を分岐供給する複数の吸気分岐管４が形成されている。
６はコレクタ３に取付けられた電子制御式の噴射弁であ
る。エンジン５の吸込側には吸気弁７があり、吐出側に
排気管８が設けられている。１０はコントローラであ
り、Ｏ2センサ１１，水温センサ１２，カム角センサ１
３，圧力センサ１４，スロットルセンサ１５等の各出力
を入力として、噴射弁６、イグニッションコイル９，Ｉ
ＳＣバルブ２１、燃料ポンプ３２等に対して制御信号を
出力する。２２はバッテリー、２３はコントローラ１０
に対するメインリレー、２４は燃料ポンプリレーであ
る。３０は燃料室であり、燃料は、燃料ポンプ３１によ
り吸い出され、プレッシャーレギュレータ３２で調圧さ
れた後、燃料配管３３、フューエルギャラリー３４（図
２参照）を経て噴射弁６に至る。噴射弁６の適正な噴射
量は、各種センサからの入力を基にコントロールユニッ
ト１０により算出されて決定される。An embodiment of the present invention will be described below. First,
FIG. 1 shows a system configuration diagram of a fuel injection device to which the present invention is applied. 1 is an air cleaner and 2 is a throttle valve assembly provided with a throttle valve for controlling the amount of intake air, that is, a throttle body. Reference numeral 3 denotes a collector, the throttle valve assembly 2 is attached to the inlet, and a plurality of intake branch pipes 4 are formed at the outlet to branch and supply air to each cylinder of the engine 5.
Reference numeral 6 denotes an electronically controlled injection valve attached to the collector 3. An intake valve 7 is provided on a suction side of the engine 5, and an exhaust pipe 8 is provided on a discharge side. Reference numeral 10 denotes a controller, which is an O2 sensor 11, a water temperature sensor 12, and a cam angle sensor 1.
3, the output of the pressure sensor 14, the throttle sensor 15 and the like as inputs, the injection valve 6, the ignition coil 9,
A control signal is output to the SC valve 21, the fuel pump 32, and the like. 22 is a battery, 23 is a controller 10
And 24 is a fuel pump relay. Reference numeral 30 denotes a fuel chamber, in which fuel is sucked out by a fuel pump 31 and adjusted in pressure by a pressure regulator 32, and then reaches the injector 6 through a fuel pipe 33 and a fuel gallery 34 (see FIG. 2). The appropriate injection amount of the injection valve 6 is calculated and determined by the control unit 10 based on inputs from various sensors.
【００１５】噴射弁６は後述するように、複数の方向へ
噴射可能な少なくとも１つ以上のオリフィスを具備して
おり、エンジン５の各気筒に１本の噴射弁ではなく、１
本の噴射弁で多気筒へ、複数の分岐管の少なくとも２つ
に燃料を噴射すべく複数の噴射口を備えている。以下の
実施例では１本の噴射弁を用いた例について説明する
が、気筒数が多いときは、複数の噴射口を備えた噴射弁
を２個以上用いても良いことは言うまでもない。As described later, the injection valve 6 has at least one orifice capable of injecting in a plurality of directions.
A plurality of injection ports are provided for injecting fuel into at least two of the plurality of branch pipes into the multi-cylinder with the single injection valve. In the following embodiment, an example using one injection valve will be described. However, when the number of cylinders is large, it goes without saying that two or more injection valves having a plurality of injection ports may be used.
【００１６】図２、図３に、本発明の実施例の吸気系を
一部断面した正面図及び側面図を示す。この例は本発明
を３気筒のエンジンに適用した場合の吸気分岐管の構成
例であり、スロットルボディ２の後流に接続された吸気
分岐管４は、噴射弁６の取付け位置付近で、折れ曲が
り、エンジン５の各気筒へ放射状に延びる直線状の吸気
分岐管４Ａ，４Ｂ、４Ｃに分岐している。噴射弁６に設
けられた３個のオリフィスの向きは、オリフィスの向き
がエンジン５の各気筒の吸気口５Ａ，５Ｂ，５Ｃに向か
うような構成となっている。2 and 3 show a front view and a side view, respectively, of the intake system according to the embodiment of the present invention, which are partially sectioned. This example is a configuration example of an intake branch pipe in a case where the present invention is applied to a three-cylinder engine. The intake branch pipe 4 connected to the downstream of the throttle body 2 is bent near the mounting position of the injection valve 6. Are branched into linear intake branch pipes 4A, 4B and 4C extending radially to each cylinder of the engine 5. The orientation of the three orifices provided in the injection valve 6 is such that the orientation of the orifices is directed to the intake ports 5A, 5B, 5C of each cylinder of the engine 5.
【００１７】図４、図５は、本発明の一実施例になる燃
料噴射弁６のノズル近傍を示す図である。燃料噴射弁６
の本体は、燃料を本体の側部から導入するサイドフィー
ド型である。噴射弁６に入った燃料は、電磁力によって
上下動する可動弁６３及びノズル６４に設けられた３個
のオリフィス６５、すなわち第一気筒用オリフィス６５
ａ、第二気筒用オリフィス６５ｂ、第三気筒用オリフィ
ス６５ｃによって計量、噴射される。燃料の分配を均一
にするために、燃料噴射弁６に設けられた３個のオリフ
ィス６５ａ，６５ｂ，６５ｃの向きは、エンジン５の各
気筒の吸気口に向かう構成となっている。FIGS. 4 and 5 are views showing the vicinity of the nozzle of the fuel injection valve 6 according to one embodiment of the present invention. Fuel injection valve 6
Is a side feed type in which fuel is introduced from the side of the main body. The fuel that has entered the injection valve 6 is supplied to the movable valve 63 that moves up and down by electromagnetic force and the three orifices 65 provided in the nozzle 64, that is, the first cylinder orifice 65.
a, is measured and injected by the second cylinder orifice 65b and the third cylinder orifice 65c. In order to make the distribution of the fuel uniform, the three orifices 65a, 65b, 65c provided in the fuel injection valve 6 are configured to face the intake ports of each cylinder of the engine 5.
【００１８】図６、図７は燃料の噴射タイミングを説明
するタイムチャートである。図６の例では、エンジンの
２回転に１回だけ、一個の噴射弁４から同時に３気筒の
エンジンに対して燃料が噴射される。噴射タイミングと
しては、３気筒のうち中央に位置する第２気筒の吸気行
程Ａの位置であり、３個のオリフィス６５ａ，６５ｂ，
６５ｃから同時に各気筒へ噴射される。これ以外の領域
は燃料噴射禁止位置となる。燃料噴射弁から吸気経路へ
噴射された燃料は、吸気経路において吸入空気と混合し
ながらエンジン５に供給される。このとき、燃料の噴霧
流は、各気筒の吸入行程等による吸入空気流の方向の影
響を受ける。図６の例によれば、燃料噴射弁６による吸
気経路への燃料噴射タイミングは、３気筒のうち中央に
位置する第２気筒の吸気行程であり、１個の燃料噴射弁
のオリフィスから各気筒へ分配噴射される。これ以外の
領域は燃料噴射禁止位置となる。これによって、１個の
燃料噴射弁６から吸気経路へ噴射された燃料は、常に、
吸気行程にある中央の第２気筒に向かうように方向性が
与えら、左右いずれかの側に偏ることがない。従って、
燃料の噴霧の方向が常に安定しており、その結果、複数
の気筒に対する燃料の分配特性が良くなる。各気筒間の
Ａ／Ｆの差が無いため、特に過渡運転時における運転性
が向上する。FIGS. 6 and 7 are time charts for explaining the fuel injection timing. In the example of FIG. 6, fuel is simultaneously injected from a single injection valve 4 into a three-cylinder engine only once every two revolutions of the engine. The injection timing is the position of the intake stroke A of the second cylinder located at the center of the three cylinders, and the three orifices 65a, 65b,
Injected simultaneously to each cylinder from 65c. The other area is the fuel injection prohibition position. Fuel injected from the fuel injection valve into the intake path is supplied to the engine 5 while being mixed with intake air in the intake path. At this time, the fuel spray flow is affected by the direction of the intake air flow due to the intake stroke of each cylinder. According to the example of FIG. 6, the fuel injection timing of the fuel injection valve 6 into the intake path is the intake stroke of the second cylinder located at the center of the three cylinders. Is distributed and injected. The other area is the fuel injection prohibition position. Thereby, the fuel injected from one fuel injection valve 6 to the intake path always
Directionality is given toward the central second cylinder in the intake stroke, and there is no deviation to the left or right side. Therefore,
The direction of fuel spray is always stable, and as a result, the distribution characteristics of fuel to a plurality of cylinders are improved. Since there is no difference in A / F between the cylinders, operability particularly during transient operation is improved.
【００１９】図７の例では、３気筒のうち両端すなわち
第１、第３気筒のいずれかが吸入行程にあるときを燃料
噴射禁止位置とする。これ以外の領域Ａ，Ｂは燃料噴射
可能位置となり、エンジンの２回転に１回だけ、一個の
噴射弁４から同時に３気筒のエンジンに対して燃料が噴
射される。この実施例でも、各気筒に対する燃料の分配
特性が良くなる。この例では、低速運転時には領域Ａま
たは領域Ｂで燃料を噴射し、優れた分配特性が要求され
る加速時や高速運転時には領域Ａで燃料を噴射するよう
に構成しても良い。In the example of FIG. 7, when both ends of the three cylinders, that is, one of the first and third cylinders is in the intake stroke, the fuel injection is prohibited. In the other areas A and B, the fuel injection is enabled, and the fuel is simultaneously injected from one injection valve 4 to the three-cylinder engine only once every two revolutions of the engine. Also in this embodiment, the fuel distribution characteristics to each cylinder are improved. In this example, the fuel may be injected in the region A or the region B during low-speed operation, and the fuel may be injected in the region A during acceleration or high-speed operation requiring excellent distribution characteristics.
【００２０】図８は、本発明の他の実施例であり、４気
筒のエンジン５に対して吸気管６は４つの吸気管６Ａ、
６Ｂ、６Ｃ、６Ｄに分かれている。これらの吸気管に
は、エンジンの２回転に１回だけ、１個の燃料噴射弁６
から燃料が同時かつ均等に噴射される。FIG. 8 shows another embodiment of the present invention, in which a four-cylinder engine 5 has four intake pipes 6A,
6B, 6C and 6D. These intake pipes are provided with one fuel injection valve 6 only once every two revolutions of the engine.
Simultaneously and uniformly.
【００２１】図９は４気筒のエンジンにおける燃料の噴
射タイミングを説明するタイムチャートである。４気筒
のエンジンの場合も、各気筒に対して一個の噴射弁４か
ら同時に燃料が噴射される。噴射タイミングとしては、
４気筒のうち中間に位置する第２、第３気筒の吸気行程
Ａで噴射される。これ以外の領域は燃料噴射禁止位置と
なる。このようにすることによって、１個の燃料噴射弁
６から吸気経路へ噴射された燃料は、常に、吸気行程に
ある中間の第２、第３気筒に向かうように方向性が与え
ら、左右両端のいずれかの気筒側に偏ることがない。従
って、燃料の噴霧の方向が常に安定しており、その結
果、複数の気筒に対する燃料の分配特性が良くなり、各
気筒間のＡ／Ｆの差が無いため、特に過渡運転時におけ
る運転性が向上する。FIG. 9 is a time chart for explaining fuel injection timing in a four-cylinder engine. In the case of a four-cylinder engine, fuel is simultaneously injected from one injection valve 4 to each cylinder. As the injection timing,
The fuel is injected in the intake stroke A of the second and third cylinders located in the middle of the four cylinders. The other area is the fuel injection prohibition position. In this way, the fuel injected from one fuel injection valve 6 into the intake path is always given directionality toward the intermediate second and third cylinders in the intake stroke, Is not biased toward one of the cylinders. Therefore, the fuel spray direction is always stable, and as a result, the fuel distribution characteristics to the plurality of cylinders are improved, and there is no difference in A / F between the cylinders. improves.
【００２２】図１０の例では、３気筒のいずれもが吸入
行程にないとき（Ａ，Ｂ，Ｃ，Ｄ）を燃料噴射位置とす
る。これ以外の領域は燃料噴射禁止位置となる。なお、
実際のエンジンでは、全気筒が吸入行程外の期間だけで
は、十分な噴射時間を確保できない場合があるので、こ
の期間に加えて、図９の例にあるような、吸入行程の一
部も燃料噴射期間とすることも考えられる。例えば、低
速運転時には領域Ａ乃至Ｄのいずれかで燃料を噴射し、
優れた分配特性が要求される加速時や高速運転時には図
９の領域Ａで燃料を噴射するように構成しても良い。こ
の実施例でも、各気筒に対する燃料の分配特性が良くな
る。In the example of FIG. 10, when none of the three cylinders is in the intake stroke (A, B, C, D), the fuel injection position is set. The other area is the fuel injection prohibition position. In addition,
In an actual engine, it may not be possible to secure a sufficient injection time only in a period in which all cylinders are outside the intake stroke. In addition to this period, a part of the intake stroke as shown in the example of FIG. An injection period may be considered. For example, during low-speed operation, fuel is injected in any of the regions A to D,
At the time of acceleration or high-speed operation requiring excellent distribution characteristics, the fuel may be injected in the region A of FIG. Also in this embodiment, the fuel distribution characteristics to each cylinder are improved.
【００２３】図１１の例では、噴射タイミングとして
（ａ）に示すように、通常は、３気筒のうち中央に位置
する第２気筒の吸気行程を基準にして若干進み位置、す
なわち排気行程の後半位置から吸気行程の前半位置まで
を含む位置Ａにおいて噴射を行う。第２気筒の吸気行程
の後半の位置Ｂは、割込み増幅巾として利用される。例
えば、高速回転時や加速運転時に割込み増幅巾を付加す
ることにより（Ａ＋Ｂ）、必要な燃料を確保して、必要
な運転特性が損なわれないようにする。高速回転時に
は、燃料供給量の増量により、運転性の確保だけでな
く、燃焼温度を低下させ、NOXの生成を抑えることがで
きる。加速運転時には、（ｂ）に示すように、スロット
ル開度の変化に連動して速やかに燃料供給量が増量する
ため、加速運転性を向上させることができる。また、早
めに噴射することによリ、吸気壁面の付着燃料を有る程
度気筒内に供給できるので、空燃比の適正化（排気浄化
性能向上）と、運転性向上が図れる。In the example of FIG. 11, as shown in FIG. 11A, the injection timing is usually slightly advanced with respect to the intake stroke of the second cylinder located at the center of the three cylinders, that is, the latter half of the exhaust stroke. The injection is performed at a position A including the position to the first half position of the intake stroke. The position B in the latter half of the intake stroke of the second cylinder is used as an interrupt amplification width. For example, by adding an interruption amplification width at the time of high-speed rotation or acceleration operation (A + B), necessary fuel is secured so that required operating characteristics are not impaired. During high-speed rotation, an increase in the amount of fuel supply not only ensures drivability, but also lowers the combustion temperature and suppresses the generation of NOX. At the time of the acceleration operation, as shown in (b), the fuel supply amount is rapidly increased in conjunction with the change in the throttle opening, so that the acceleration operation performance can be improved. In addition, early injection allows a certain amount of fuel adhering to the intake wall to be supplied into the cylinder, so that the air-fuel ratio can be optimized (exhaust gas purification performance) and drivability can be improved.
【００２４】図１２の例では、噴射タイミングとして、
３気筒のうち中央に位置する第２気筒の吸気バルブと排
気バルブのオーバーラップ期間後、所定の期間内、すな
わち圧縮行程の前半までを含む位置Ａにおいて燃料を噴
射する。この方法によれば、正確な空燃比制御による排
気浄化性能の向上と運転性向上を図ることができる。ま
た、排気バルブ開時に燃料が排気側に漏れて触媒で燃焼
し、異常高温となって触媒を損傷させることを防止でき
る（排気浄化性能向上）。In the example of FIG. 12, the injection timing
After the overlap period of the intake and exhaust valves of the second cylinder located at the center of the three cylinders, fuel is injected within a predetermined period, that is, at the position A including the first half of the compression stroke. According to this method, it is possible to improve the exhaust gas purification performance and the drivability by accurate air-fuel ratio control. Further, it is possible to prevent fuel from leaking to the exhaust side when the exhaust valve is opened and burning with the catalyst, resulting in an abnormally high temperature and damaging the catalyst (improvement in exhaust purification performance).
【００２５】[0025]
【発明の効果】本発明によれば、一本の噴射弁で複数の
気筒に燃料を噴射するにもかかわらず、各気筒間分配を
均一とすることができ、エンジンの運転性向上および有
毒排気ガスの低減が得られ、また低コストな燃料噴射装
置を提供することができる。According to the present invention, even though fuel is injected into a plurality of cylinders with a single injection valve, the distribution among the cylinders can be made uniform, so that the operability of the engine is improved and the toxic exhaust is improved. It is possible to provide a low-cost fuel injection device that can reduce the amount of gas.
【図１】本発明が適用される燃料噴射装置のシステム構
成図である。FIG. 1 is a system configuration diagram of a fuel injection device to which the present invention is applied.
【図２】本発明の実施例の吸気系を一部断面した平面図
である。FIG. 2 is a plan view in which an intake system according to an embodiment of the present invention is partially sectioned.
【図３】本発明の実施例の吸気系を一部断面した側面図
である。FIG. 3 is a side view in which the intake system of the embodiment of the present invention is partially sectioned.
【図４】本発明の実施例における噴射弁のオリフィス部
の一例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing an example of an orifice portion of the injection valve according to the embodiment of the present invention.
【図５】本発明の実施例における噴射弁のオリフィス部
の一例を示す底面図である。FIG. 5 is a bottom view showing an example of an orifice portion of the injection valve according to the embodiment of the present invention.
【図６】本発明の実施例における燃料の噴射タイミング
の例を説明するタイムチャートである。FIG. 6 is a time chart for explaining an example of fuel injection timing in the embodiment of the present invention.
【図７】本発明の実施例における燃料の噴射タイミング
の例を説明するタイムチャートである。FIG. 7 is a time chart illustrating an example of fuel injection timing in the embodiment of the present invention.
【図８】本発明の他の実施例の吸気管の形状を示す図で
ある。FIG. 8 is a view showing a shape of an intake pipe according to another embodiment of the present invention.
【図９】本発明の実施例における燃料の噴射タイミング
の例を説明するタイムチャートである。FIG. 9 is a time chart for explaining an example of fuel injection timing in the embodiment of the present invention.
【図１０】本発明の実施例における燃料の噴射タイミン
グの例を説明するタイムチャートである。FIG. 10 is a time chart for explaining an example of fuel injection timing in the embodiment of the present invention.
【図１１】本発明の実施例における燃料の噴射タイミン
グの例を説明するタイムチャートである。FIG. 11 is a time chart illustrating an example of fuel injection timing in the embodiment of the present invention.
【図１２】本発明の実施例における燃料の噴射タイミン
グの例を説明するタイムチャートである。FIG. 12 is a time chart for explaining an example of fuel injection timing in the embodiment of the present invention.
１…エアクリーナ、２…スロットルボディ、３…コレク
タ、４（４Ａ，４Ｂ、４Ｃ）…吸気分岐管、５…エンジ
ン、５Ａ，５Ｂ，５Ｃ…各気筒の吸気口、６…噴射弁、
７…吸気弁、８…排気管８、１０…コントローラ、３２
…燃圧調整弁（プレッシャーレギュレータ）、６３…可
動弁、６４…ノズル、６５…噴射オリフィス、６５ａ…
第一気筒用オリフィス、６５ｂ…第二気筒用オリフィ
ス、６５ｃ…第三気筒用オリフィス、DESCRIPTION OF SYMBOLS 1 ... Air cleaner, 2 ... Throttle body, 3 ... Collector, 4 (4A, 4B, 4C) ... Intake branch pipe, 5 ... Engine, 5A, 5B, 5C ... Inlet of each cylinder, 6 ... Injection valve,
7 ... intake valve, 8 ... exhaust pipe 8, 10 ... controller, 32
... Fuel pressure regulating valve (pressure regulator), 63 ... Movable valve, 64 ... Nozzle, 65 ... Injection orifice, 65a ...
Orifice for first cylinder, 65b ... orifice for second cylinder, 65c ... orifice for third cylinder,
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ０２Ｍ 69/04 Ｆ０２Ｍ 69/00 ３５０Ｒ (72)発明者 間中 敏雄 茨城県ひたちなか市大字高場2520番地 株式会社 日立製作所 自動車機器事業 部内 (72)発明者 河野 一也 茨城県ひたちなか市大字高場2520番地 株式会社 日立製作所 自動車機器事業 部内 (56)参考文献 特開 昭55−19933（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02M 69/00 F02M 69/04 F02D 41/34 F02M 61/18 320 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI F02M 69/04 F02M 69/00 350R (72) Inventor Toshio Manaka 2520 Takahiro, Hitachinaka-shi, Ibaraki Prefecture Hitachi, Ltd. Automotive equipment Business Unit (72) Inventor Kazuya Kono 2520 Ojitakaba, Hitachinaka City, Ibaraki Prefecture Hitachi, Ltd. Automotive Equipment Business Unit (56) References JP-A-55-19933 (JP, A) (58) Fields surveyed ( Int.Cl. 7 , DB name) F02M 69/00 F02M 69/04 F02D 41/34 F02M 61/18 320
Claims (4)
組立体と、前記絞弁組立体に接続され、出口には多気筒
エンジンの各シリンダに空気を分岐供給する吸気経路
と、前記吸気経路に取付けられた１個の燃料噴射弁とを
備えた内燃機関の燃料供給装置において、 前記吸気経路は、前記入口付近から前記エンジンの各気
筒へ分岐して放射状に延びた複数の吸気分岐管を含んで
おり、各吸気分岐管は前記燃料噴射弁の取付け位置から
前記エンジンの各気筒の吸気口付近まで、縦、横いずれ
の断面で見ても、ほぼ直線状に延びており、 前記燃料噴射弁は前記各気筒に対応するオリフィスを備
えており、前記各オリィスが前記放射状に延びた各吸気
分岐管の方向に沿って前記エンジンの各気筒の吸気口を
向いており、 前記燃料噴射弁による燃料の噴射タイミングとして、前
記複数の気筒のうち両端のいずれかの気筒が吸入行程に
あるときを燃料噴射禁止位置とし、これ以外の領域で、
前記燃料噴射弁から前記各気筒へ分配噴射することを特
徴とする内燃機関の燃料供給装置。And 1. A throttle valve assembly comprising a throttle valve for controlling an amount of intake air, which is connected to the throttle valve assembly, the outlet air branch supplying air inlet path to each cylinder of a multi-cylinder engine A fuel supply device for an internal combustion engine, comprising: a fuel injection valve attached to the intake path; wherein the intake path branches radially from the vicinity of the inlet to each cylinder of the engine. An intake branch pipe is included, and each intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in any of vertical and horizontal cross sections. The fuel injection valve includes an orifice corresponding to each of the cylinders, wherein each of the orifices faces an intake port of each of the cylinders of the engine along a direction of each of the radially extending intake branch pipes; Fuel injection by fuel injector As morphism timing, when any of the cylinders at both ends of the plurality of cylinders is in the intake stroke and the fuel injection prohibition position, in which other regions,
A fuel supply device for an internal combustion engine, wherein the fuel injection valve performs distributed injection to each of the cylinders.
組立体と、前記絞弁組立体に接続され、出口には多気筒
エンジンの各シリンダに空気を分岐供給する吸気経路
と、前記吸気経路に取付けられた１個の燃料噴射弁とを
備えた内燃機関の燃料供給装置において、 前記吸気経路は、前記入口付近から前記エンジンの各気
筒へ分岐して放射状に延びた複数の吸気分岐管を含んで
おり、各吸気分岐管は前記燃料噴射弁の取付け位置から
前記エンジンの各気筒の吸気口付近まで、縦、横いずれ
の断面で見ても、ほぼ直線状に延びており、 前記燃料噴射弁は前記各気筒に対応するオリフィスを備
えており、前記各オリィスが前記放射状に延びた各吸気
分岐管の方向に沿って前記エンジンの各気筒の吸気口を
向いており、 前記燃料噴射弁による燃料の噴射タイミングとして、前
記複数の気筒のうちいずれもが吸入行程にないときを燃
料噴射位置とし、前記燃料噴射弁から前記各気筒へ分配
噴射することを特徴とする内燃機関の燃料供給装置。 2. A throttle valve assembly having a throttle valve for controlling an amount of intake air, an intake passage connected to the throttle valve assembly and having an outlet for branching and supplying air to each cylinder of the multi-cylinder engine. A fuel supply device for an internal combustion engine, comprising: a fuel injection valve attached to the intake path; wherein the intake path branches radially from the vicinity of the inlet to each cylinder of the engine. An intake branch pipe is included, and each intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in any of vertical and horizontal cross sections. The fuel injection valve includes an orifice corresponding to each of the cylinders, wherein each of the orifices faces an intake port of each of the cylinders of the engine along a direction of each of the radially extending intake branch pipes; Fuel injection by fuel injector As morphism timing, none of the plurality of cylinders and the fuel injection position when not in suction stroke, fuel supply system for an internal combustion engine, characterized by distributing injected into the respective cylinders from the fuel injection valve.
組立体と、前記絞弁組立体に接続され、出口には多気筒
エンジンの各シリンダに空気を分岐供給する吸気経路
と、前記吸気経路に取付けられた１個の燃料噴射弁とを
備えた内燃機関の燃料供給装置において、 前記吸気経路は、前記入口付近から前記エンジンの各気
筒へ分岐して放射状に延びた複数の吸気分岐管を含んで
おり、各吸気分岐管は前記燃料噴射弁の取付け位置から
前記エンジンの各気筒の吸気口付近まで、縦、横いずれ
の断面で見ても、ほぼ直線状に延びており、 前記燃料噴射弁は前記各気筒に対応するオリフィスを備
えており、前記各オリィスが前記放射状に延びた各吸気
分岐管の方向に沿って前記エンジンの各気筒の吸気口を
向いており、 前記燃料噴射弁による燃料の噴射タイミングとして、複
数の気筒のうち、通常は、中間に位置する気筒または気
筒群の吸気行程を基準にして、該気筒または気筒群の排
気行程の後半位置から吸気行程の前半位置までを含む位
置において噴射を行い、前記中間の気筒または気筒群の
吸気行程の後半位置は、割込み増幅巾として利用し、こ
れらの領域で、前記燃料噴射弁から前記各気筒へ分配噴
射することを特徴とする内燃機関の燃料供給装置。 3. A throttle valve assembly having a throttle valve for controlling an amount of intake air, an intake passage connected to the throttle valve assembly and having an outlet for branching and supplying air to each cylinder of the multi-cylinder engine. A fuel supply device for an internal combustion engine, comprising: a fuel injection valve attached to the intake path; wherein the intake path branches radially from the vicinity of the inlet to each cylinder of the engine. An intake branch pipe is included, and each intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in any of vertical and horizontal cross sections. The fuel injection valve includes an orifice corresponding to each of the cylinders, wherein each of the orifices faces an intake port of each of the cylinders of the engine along a direction of each of the radially extending intake branch pipes; Fuel injection by fuel injector As the injection timing, of the plurality of cylinders, a position including the second half position of the exhaust stroke of the cylinder or the group of cylinders to the first half position of the intake stroke of the cylinder or the group of cylinders based on the intake stroke of the middle cylinder or the group of cylinders. And the latter half of the intake stroke of the intermediate cylinder or cylinder group is used as an interrupt amplification width, and in these regions, the fuel is injected from the fuel injection valve to each of the cylinders. Engine fuel supply.
組立体と、前記絞弁組立体に接続され、出口には多気筒
エンジンの各シリンダに空気を分岐供給する吸気経路
と、前記吸気経路に取付けられた１個の燃料噴射弁とを
備えた内燃機関の燃料供給装置において、 前記吸気経路は、前記入口付近から前記エンジンの各気
筒へ分岐して放射状に延びた複数の吸気分岐管を含んで
おり、各吸気分岐管は前記燃料噴射弁の取付け位置から
前記エンジンの各気筒の吸気口付近まで、縦、横いずれ
の断面で見ても、ほぼ直線状に延びており、 前記燃料噴射弁は前記各気筒に対応するオリフィスを備
えており、前記各オリィスが前記放射状に延びた各吸気
分岐管の方向に沿って前記エンジンの各気筒の吸気口を
向いており、 前記燃料噴射弁による燃料の噴射タイミングとして、複
数の気筒のうち中間に位置する気筒または気筒群の吸気
バルブと排気バルブのオーバーラップ期間後、圧縮行程
の前半までを含む位置の間とし、この領域で、前記燃料
噴射弁から前記各気筒へ分配噴射することを特徴とする
内燃機関の燃料供給装置。 4. A throttle valve assembly having a throttle valve for controlling an amount of intake air, an intake passage connected to the throttle valve assembly, and having an outlet for branching and supplying air to each cylinder of the multi-cylinder engine. A fuel supply device for an internal combustion engine, comprising: a fuel injection valve attached to the intake path; wherein the intake path branches radially from the vicinity of the inlet to each cylinder of the engine. An intake branch pipe is included, and each intake branch pipe extends substantially linearly from the mounting position of the fuel injection valve to the vicinity of the intake port of each cylinder of the engine in any of vertical and horizontal cross sections. The fuel injection valve includes an orifice corresponding to each of the cylinders, wherein each of the orifices faces an intake port of each of the cylinders of the engine along a direction of each of the radially extending intake branch pipes; Fuel injection by fuel injector As the injection timing, after the overlap period of the intake valve and the exhaust valve of the cylinder or cylinder group located in the middle of the plurality of cylinders, between the position including the first half of the compression stroke, in this region, from the fuel injection valve A fuel supply device for an internal combustion engine, which performs distributed injection to each of the cylinders.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22998595A JP3303619B2 (en) | 1995-09-07 | 1995-09-07 | Fuel supply device for internal combustion engine |
| CN96109607A CN1057819C (en) | 1995-09-07 | 1996-08-30 | Fuel feeding method and device for multi-cylinder I.C engine |
| KR1019960038422A KR100302105B1 (en) | 1995-09-07 | 1996-09-05 | Fuel supply device and fuel supply method of internal combustion engine |
| KR1019960038689A KR100300108B1 (en) | 1995-09-07 | 1996-09-06 | Fuel feed apparatus for internal combustion engine and fuel feed method the reof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22998595A JP3303619B2 (en) | 1995-09-07 | 1995-09-07 | Fuel supply device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0972263A JPH0972263A (en) | 1997-03-18 |
| JP3303619B2 true JP3303619B2 (en) | 2002-07-22 |
Family
ID=16900800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22998595A Expired - Fee Related JP3303619B2 (en) | 1995-09-07 | 1995-09-07 | Fuel supply device for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3303619B2 (en) |
| KR (1) | KR100302105B1 (en) |
| CN (1) | CN1057819C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8894961B2 (en) | 2009-05-22 | 2014-11-25 | E I Du Pont De Nemours And Company | Sodium cyanide process |
| DE102012205839A1 (en) * | 2012-04-11 | 2013-10-17 | Robert Bosch Gmbh | Method for operating fuel injector of internal combustion engine e.g. diesel engine, involves determining injection operation request not within injection prohibited request area by decreasing or increasing target injection request |
| CN104343593B (en) * | 2014-09-02 | 2017-11-03 | 哈尔滨工程大学 | A kind of gaseous fuel engine charge device and fuel gas injection control method |
| JP6304341B1 (en) * | 2016-10-21 | 2018-04-04 | マツダ株式会社 | Engine fuel control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641452A (en) * | 1979-09-12 | 1981-04-18 | Toyota Central Res & Dev Lab Inc | Fuel injection device of multicylinder internal combustion engine |
| JPS63223364A (en) * | 1987-03-12 | 1988-09-16 | Mitsubishi Electric Corp | Fuel injection device of gasoline engine |
-
1995
- 1995-09-07 JP JP22998595A patent/JP3303619B2/en not_active Expired - Fee Related
-
1996
- 1996-08-30 CN CN96109607A patent/CN1057819C/en not_active Expired - Fee Related
- 1996-09-05 KR KR1019960038422A patent/KR100302105B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100302105B1 (en) | 2002-08-08 |
| JPH0972263A (en) | 1997-03-18 |
| CN1145450A (en) | 1997-03-19 |
| KR970016092A (en) | 1997-04-28 |
| CN1057819C (en) | 2000-10-25 |
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| LAPS | Cancellation because of no payment of annual fees |