JPS6325334A - Fuel jet method - Google Patents
Fuel jet methodInfo
- Publication number
- JPS6325334A JPS6325334A JP12271387A JP12271387A JPS6325334A JP S6325334 A JPS6325334 A JP S6325334A JP 12271387 A JP12271387 A JP 12271387A JP 12271387 A JP12271387 A JP 12271387A JP S6325334 A JPS6325334 A JP S6325334A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection
- cylinders
- cut
- injection valve
- 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 description 34
- 238000000034 method Methods 0.000 title claims description 12
- 238000002347 injection Methods 0.000 claims description 35
- 239000007924 injection Substances 0.000 claims description 35
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、燃料噴射方法に係り、さらに詳しくは負荷条
件に応じて内燃機関のシリンダに噴射弁を介して所定の
順序で燃料を噴射することが可能であって、噴射弁を開
放させる信号が発生される、特に燃料カット時の燃料噴
射方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fuel injection method, and more specifically, to a method for injecting fuel into cylinders of an internal combustion engine in a predetermined order via an injection valve depending on load conditions. The present invention relates to a fuel injection method, in particular during a fuel cut, in which a signal is generated to open the injection valve.
［従来の技術］
ドイツ特許公開公報第３４１８３８７号から燃料噴射方
法が知られており、この方法によれば内燃機関の個々の
シリンダに燃料が連続的に分配される。BACKGROUND OF THE INVENTION A fuel injection method is known from DE 34 18 387 A1, in which fuel is distributed continuously to the individual cylinders of an internal combustion engine.
さらに有害物質の減少と燃料の節約を行なうために、た
とえば自動車が坂道を降りるとき、あるいはアクセルペ
ダルを戻すときなどの所定の負荷状態においては内燃機
関のシリンダに燃料供給を行なわないようにすること（
燃料カット）が知られている。Furthermore, in order to reduce pollutants and save fuel, the cylinders of the internal combustion engine should not be supplied with fuel under certain load conditions, for example when the car descends a hill or when the gas pedal is released. (
(fuel cut) is known.
［発明が解決しようとする問題点］
このような従来方法では、燃料カット時、遮断すべき噴
射弁ないしシリンダが必ずしも最適に定められておらず
、運転状態によっては内燃機関がオーバーヒートしたり
、有害ガスが発生する等燃料カットが最適に行なわれな
いという問題点があった。[Problems to be solved by the invention] In such conventional methods, the injection valves or cylinders to be shut off are not necessarily optimally determined when fuel is cut, and depending on the operating conditions, the internal combustion engine may overheat or cause harmful damage. There was a problem that the fuel cut was not performed optimally, such as gas generation.
［問題点を解決するための手段］
本発明によれば、この問題点を解決するために燃料カッ
トすべきシリンダの数、特にクランク軸の各２回転につ
き燃料カットすべきシリンダの数を予め定めておく構成
を採用した。[Means for Solving the Problem] According to the present invention, in order to solve this problem, the number of cylinders to be cut of fuel, particularly the number of cylinders to be cut of fuel for every two rotations of the crankshaft, is determined in advance. We adopted a configuration in which
［作 用］
本発明に係る燃料噴射方法によれば、要請に応じて所定
数のシリンダの燃料をカットするという利点が得られる
。それぞれ負荷状態に応じて少なくとも１つから多くは
全部のシリンダの噴射弁が遮断される。[Function] According to the fuel injection method according to the present invention, there is an advantage that the fuel of a predetermined number of cylinders can be cut according to a request. Depending on the respective load state, at least one and often all the injection valves of the cylinders are shut off.
このように遮断は、内燃機関の負荷状態に関係して行な
われ、駆動中の急激な変化が避けられる。噴射弁は、ど
のシリンダも余り長く駆動されないままの状態にならな
いように循環式に交互に遮断される。常に同一の弁が駆
動され、ないしは遮断されるのを防止するために本発明
においては遮断時対称にならないような手段が設けられ
ている。すなわち所定回数の遮断あるいは間引きが行な
われると、自動的に他のシリンダの噴射弁へ切り換えら
れる。従って、常に同じシリンダないしは噴射弁が遮断
されるのではなく、本発明によれば周期的にすべてのシ
リンダが次々と遮断される。従って、極めて簡単な方法
で内燃機関の好ましからざる温度状態を避けることがで
きる。In this way, the shutoff takes place in dependence on the load state of the internal combustion engine, and sudden changes during operation are avoided. The injection valves are alternately shut off in a cyclic manner so that no cylinder remains unactuated for too long. In order to prevent the same valve from being driven or shut off all the time, the present invention is provided with means that are not symmetrical when shutting off. That is, after a predetermined number of shutoffs or thinnings, the injection valve is automatically switched to another cylinder's injection valve. Therefore, instead of always shutting off the same cylinder or injection valve, according to the invention all cylinders are shut off one after the other periodically. Undesirable temperature conditions in the internal combustion engine can therefore be avoided in a very simple manner.
［実施例］ 次に図面を用いて本発明の詳細な説明する。[Example] Next, the present invention will be explained in detail using the drawings.
第１図は４気筒の内燃機関のそれぞれの噴射弁に供給さ
れる信号Ｅｌ−Ｅ４を示すものである。FIG. 1 shows the signal El-E4 supplied to each injection valve of a four-cylinder internal combustion engine.
ここでは第１のモードにおいては通常どおりシリンダに
連続して所定の順序で燃料が供給されて、個々の噴射弁
Ｅ１〜Ｅ４が順次開放されるものとする。噴射機関、噴
射時点等はここでは詳しく説明されていないが運転状態
に応じて決定される。Here, it is assumed that in the first mode, fuel is continuously supplied to the cylinders in a predetermined order as usual, and the individual injection valves E1 to E4 are sequentially opened. Although the injection engine, injection time, etc. are not explained in detail here, they are determined depending on the operating state.
第２のモード（燃料カット）は、信号Ｓ１の発生によっ
て開始される。この信号Ｓ１は、クランク軸がそれぞれ
２回転するごとに１つの噴射弁が遮断されることを示す
ものである。この信号は上位の主電子回路によって発生
される。この主電子回路によって、内燃機関の負荷の要
請に応じてそれぞれ燃料カットすべきシリンダの数を予
め定める他の信号を発生させることができる。全部の噴
射弁が遮断されない限りは、噴射弁は交互に遮断される
ので、どのシリンダも余り長く駆動されないままになる
ことわない。The second mode (fuel cut) is initiated by the generation of signal S1. This signal S1 indicates that one injection valve is shut off every two revolutions of the crankshaft. This signal is generated by the upper main electronics. By means of this main electronic circuit, further signals can be generated which predetermine the number of cylinders to be cut off, depending on the load requirements of the internal combustion engine. Unless all the injection valves are shut off, the injection valves are shut off alternately so that no cylinder remains unactuated for too long.
第２のモードにおいては信号Ｓ１によって時間ｔ１の間
噴射弁Ｅ２は開放されないので、内燃機関の第２のシリ
ンダは燃料カットされたままになる。この処置は少なく
とも次のクランク軸回転の間はなお維持される０本発明
によればこの種の間引きがＮ回行なわれると、他のシリ
ンダの噴射弁への切り換えが行なわれる。In the second mode, the signal S1 does not open the injection valve E2 during the time t1, so that the second cylinder of the internal combustion engine remains cut off from fuel. This procedure is still maintained at least for the next crankshaft rotation.According to the invention, when such a reduction has been carried out N times, a changeover to the injection valve of the other cylinder takes place.
このタイミング図の右側部分から明らかなように、燃料
噴射順序に応じて噴射弁Ｅ２が開放され、時間ｔ２のと
き噴射弁Ｅ３が閉鎖された状態になる。この処置によっ
て常に同一のシリンダの燃料がカットされたままになる
ことが避けられる。この種の噴射の間引きが所定のＮ回
行なわれると再び第３のシリンダから第４のシリンダへ
と切り換えが行なわれる。As is clear from the right side of this timing diagram, the injection valve E2 is opened according to the fuel injection order, and the injection valve E3 is closed at time t2. This procedure prevents the same cylinder from always having its fuel cut off. After a predetermined N number of injection thinnings of this type have been carried out, the switch is again carried out from the third cylinder to the fourth cylinder.
タイミング図に示されれているそれぞれ１つだけのシリ
ンダの燃料カットを行なう信号Ｓ１の代りに、上位の電
子回路から従属電子回路へ燃料カットすべきシリンダの
数を予め定めるための信号を供給することができる。こ
の処理はそれぞれクランク軸が２回転する間有効である
。この信号の場合にも上述の説明どおりにＮ回の間引き
の後に自動的に他のシリンダへの切換が行なわれる。Instead of the signal S1 shown in the timing diagram for cutting off the fuel of only one cylinder in each case, the superordinate electronic circuit supplies the slave electronic circuit with a signal for predetermining the number of cylinders to be cut off. be able to. This process is valid for two revolutions of the crankshaft. In the case of this signal as well, as explained above, the cylinder is automatically switched to another cylinder after N times of thinning.
従属電子回路への信号の伝達は好ましくは３木の導線で
並列に行なわれ、ビット値に応じて燃料カットすべきシ
リンダの数が予め決定される。第２図に示すビット値の
表面にこの例が示されている。The transmission of signals to the slave electronic circuits is preferably carried out in parallel by three conductors, and depending on the bit value the number of cylinders to be fuel cut is predetermined. An example of this is shown on the surface of the bit value shown in FIG.
Ｐｉ、Ｐ２．Ｐ３は従属電子回路の入力端子を示すもの
であって、この入力端子は上述の３木の導線を介して主
電子回路と接続されている。このビット表の第１行によ
れば、３つの入力端子のいずれにも信号は供給されてい
ない、これは、第１図で説明した第１のモードに対応し
、シリンダのいずれも燃料カットが行なわれないことを
示すものである。ビット表の第２行によれば、入力端子
Ｐ１に信号が供給される。この場合は、第１図の第２の
モードに対応した効果が得られる。入力端子Ｐｉ、Ｐ２
．Ｐ３へ供給される信号に応じて全シリンダの数と同じ
数までの燃料カットすべきシリンダの数が示されている
。Pi, P2. P3 indicates an input terminal of the subordinate electronic circuit, and this input terminal is connected to the main electronic circuit through the three conductive wires mentioned above. According to the first row of this bit table, no signal is supplied to any of the three input terminals, which corresponds to the first mode described in Figure 1, in which no fuel is cut off for any of the cylinders. This indicates that it will not be carried out. According to the second row of the bit table, a signal is supplied to the input terminal P1. In this case, an effect corresponding to the second mode in FIG. 1 can be obtained. Input terminal Pi, P2
．． Depending on the signal supplied to P3, the number of cylinders to be cut of fuel is indicated, up to the same number as the total number of cylinders.
［発明の効果］
以上説明したように本発明によれば、クランク軸の各２
回転につき燃料カットすべきシリンダの数が予め定めら
れるので、極めて簡単な方法で最適な燃料カットないし
燃料噴射が行なわれる。[Effects of the Invention] As explained above, according to the present invention, each of the two crankshafts
Since the number of cylinders to be cut off per revolution is predetermined, optimum fuel cutoff or fuel injection can be carried out in a very simple manner.
第１図は燃料噴射状態を示すタイミング図、第２図は燃
料カットすべきシリンダ数とビット値の関係を示す表口
である。FIG. 1 is a timing diagram showing the fuel injection state, and FIG. 2 is a front page showing the relationship between the number of cylinders to be cut of fuel and the bit value.
Claims (1)
介して所定の順序で燃料が供給され、噴射弁を開放させ
る信号が発生される、特に燃料カット時の燃料噴射方法
において、 燃料カットを行なうため、特にクランク軸の各２回転に
つき燃料カットすべきシリンダの数を予め定めておくよ
うにすることを特徴とする燃料噴射方法。 ２） 遮断すべき噴射弁が切り換えられることを特徴と
する特許請求の範囲第１項に記載の方法。 ３） 所定数の間引きが行なわれると自動的に他のシリ
ンダの噴射弁へ切り換えられ、この噴射弁が所定時間遮
断された後に次の噴射弁への切り換えが周期的に行なわ
れることを特徴とする特許請求の範囲第１項あるいは第
２項に記載の方法。[Claims] 1) Fuel injection in which fuel is supplied in a predetermined order through the injection valves according to the load conditions of the cylinders of the internal combustion engine, and a signal for opening the injection valves is generated, especially during fuel cut. A method for fuel injection, characterized in that the number of cylinders to be cut of fuel for each two revolutions of the crankshaft is predetermined, in particular for each two revolutions of the crankshaft. 2) The method according to claim 1, characterized in that the injection valve to be shut off is switched. 3) When a predetermined number of injectors are thinned out, the injection valves of other cylinders are automatically switched to, and after this injection valve is shut off for a predetermined period of time, switching to the next injection valve is performed periodically. The method according to claim 1 or 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3623040.5 | 1986-07-09 | ||
| DE19863623040 DE3623040A1 (en) | 1986-07-09 | 1986-07-09 | Method of fuel injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6325334A true JPS6325334A (en) | 1988-02-02 |
Family
ID=6304732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12271387A Pending JPS6325334A (en) | 1986-07-09 | 1987-05-21 | Fuel jet method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS6325334A (en) |
| DE (1) | DE3623040A1 (en) |
| FR (1) | FR2601413B1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02123212A (en) * | 1988-10-31 | 1990-05-10 | Isuzu Motors Ltd | Valve controller |
| GB9004190D0 (en) * | 1990-02-23 | 1990-04-18 | Lucas Ind Plc | Method and apparatus for controlling engine torque and wheel spin |
| FR2690204B1 (en) * | 1992-04-17 | 1995-11-17 | Renault | FUEL SUPPLY METHOD FOR INTERNAL COMBUSTION ENGINE. |
| DE4328835C2 (en) * | 1993-08-27 | 2002-09-05 | Bosch Gmbh Robert | Cylinder-selective injection system |
| DE4334557A1 (en) * | 1993-10-11 | 1995-04-13 | Bayerische Motoren Werke Ag | Device for idle control of a motor vehicle internal combustion engine |
| JP3358887B2 (en) * | 1994-09-20 | 2002-12-24 | 本田技研工業株式会社 | Cylinder number control internal combustion engine |
| DE19805009C2 (en) * | 1998-02-07 | 2000-09-14 | Hartwig Groeneveld | Method and device for controlling an internal combustion engine |
| DE102009056205A1 (en) | 2009-11-28 | 2011-06-01 | Groeneveld, Hartwig, Dipl.-Ing. TU | Method for controlling of valve, injection and ignition of combustion engine, involves inducing, compressing and igniting air and fuel separately or air-fuel mixture in combustion chamber |
| AT515866B1 (en) | 2014-06-04 | 2016-03-15 | Ge Jenbacher Gmbh & Co Og | Method for controlling an internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738629A (en) * | 1980-08-15 | 1982-03-03 | Nippon Denso Co Ltd | Fuel injection control apparatus for multicylindered diesel engine |
| JPS58117328A (en) * | 1982-01-06 | 1983-07-12 | Hitachi Ltd | Engine, number of cylinder thereof is controlled |
| JPS61129442A (en) * | 1984-11-26 | 1986-06-17 | Nissan Motor Co Ltd | Fuel injection controller |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103655A (en) * | 1977-03-22 | 1978-08-01 | Donald Kennedy Coles | Internal combustion engine |
| JPS562430A (en) * | 1979-06-20 | 1981-01-12 | Nissan Motor Co Ltd | Cold start countermeasuring device for number of cylinder controlling engine |
| JPS5654933A (en) * | 1979-10-12 | 1981-05-15 | Nissan Motor Co Ltd | Fuel cut device |
| JPS5669435A (en) * | 1979-11-07 | 1981-06-10 | Nissan Motor Co Ltd | Cylinder number controlled engine |
| JPS57108431A (en) * | 1980-12-24 | 1982-07-06 | Nippon Soken Inc | Control device of output from internal combustion engine |
| IT1139075B (en) * | 1981-04-06 | 1986-09-17 | Alfa Romeo Auto Spa | POWER SUPPLY CONTROL APPARATUS FOR A C.I. |
| JPS58200048A (en) * | 1982-05-18 | 1983-11-21 | Fuji Heavy Ind Ltd | Controller for number of cylinders to which fuel is supplied |
| DE3317549A1 (en) * | 1983-05-13 | 1984-11-15 | Lutz 8000 München Preis | Device for removing capsules, tablets or sugar-coated tablets from blister packs |
-
1986
- 1986-07-09 DE DE19863623040 patent/DE3623040A1/en not_active Ceased
-
1987
- 1987-03-17 FR FR8703650A patent/FR2601413B1/en not_active Expired - Lifetime
- 1987-05-21 JP JP12271387A patent/JPS6325334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738629A (en) * | 1980-08-15 | 1982-03-03 | Nippon Denso Co Ltd | Fuel injection control apparatus for multicylindered diesel engine |
| JPS58117328A (en) * | 1982-01-06 | 1983-07-12 | Hitachi Ltd | Engine, number of cylinder thereof is controlled |
| JPS61129442A (en) * | 1984-11-26 | 1986-06-17 | Nissan Motor Co Ltd | Fuel injection controller |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2601413B1 (en) | 1991-06-21 |
| DE3623040A1 (en) | 1988-01-14 |
| FR2601413A1 (en) | 1988-01-15 |
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