JPS5827818A - Method of injecting fuel of internal-combustion engine - Google Patents
Method of injecting fuel of internal-combustion engineInfo
- Publication number
- JPS5827818A JPS5827818A JP56126394A JP12639481A JPS5827818A JP S5827818 A JPS5827818 A JP S5827818A JP 56126394 A JP56126394 A JP 56126394A JP 12639481 A JP12639481 A JP 12639481A JP S5827818 A JPS5827818 A JP S5827818A
- Authority
- JP
- Japan
- Prior art keywords
- set value
- fuel
- fuel injection
- combustion engine
- stopped
- 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 50
- 238000000034 method Methods 0.000 title claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 title claims description 20
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000295 fuel oil Substances 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
Abstract
Description
【発明の詳細な説明】 本発明は内燃機関に燃料噴射を行なう方法に関する。[Detailed description of the invention] The present invention relates to a method for injecting fuel into an internal combustion engine.
いわゆる電子式燃料噴射装置と呼ばれる先行技術では、
スロットル弁の絞り童す寿わち開度が最小になったこと
を検出するスイッチをスロットル弁に関連して設け、こ
のスイッチによる検出時における内燃機関の回転数が予
め定めた値よりも大きいときに燃料噴射を停止し、前記
回転数が前記予め定めた値にまで低下したとき丹び燃料
を噴射するようＫｍ成されている。このような先行技術
では、スロットル弁の開度が最小にならないと燃、ｂｏ
ｘ射が停止されないので、スロットル弁の開度がその取
小値を越える範囲で絞り操作される場合には燃料が無駄
に噴射されることになる。In the prior art so-called electronic fuel injection device,
A switch is provided in conjunction with the throttle valve to detect when the throttle opening of the throttle valve has reached its minimum, and when the rotational speed of the internal combustion engine is greater than a predetermined value at the time of detection by this switch. Km is configured such that fuel injection is stopped at Km, and fuel is injected when the rotational speed drops to the predetermined value. In such prior art, if the opening degree of the throttle valve is not minimized, combustion will occur.
Since the x-injection is not stopped, fuel will be injected in vain if the opening of the throttle valve is operated in a range exceeding its minimum value.
本発明の目的は燃料消費の節減をさらに可能にした内燃
機関の燃料噴射方法を提供することでめる０
第１図は本発明の一笑施例の全体の系統図である０火花
点火内燃磯関ｌの吸気経路２にはスロットル弁３と、燃
料噴射弁４とが設けられる。スロットル弁３の開度は検
出器５によって検出される。An object of the present invention is to provide a fuel injection method for an internal combustion engine that further reduces fuel consumption. Fig. 1 is an overall system diagram of an embodiment of the present invention. A throttle valve 3 and a fuel injection valve 4 are provided in the intake path 2 of the engine 1. The opening degree of the throttle valve 3 is detected by a detector 5.
内燃機関ｌの回転数はクランク軸１０に関連して設けら
れた検出器６によって検出される。これらの検出ｂ５，
６からの出力は、マイクロコンビュ−夕などを含む処理
装置７に与えられる。処理装置［７は、これらの検出器
５．６からの出方に応答して燃料噴射弁４を制御し、こ
れによって内燃機関における遍切な燃料噴射蓋が制御さ
れる。The rotation speed of the internal combustion engine l is detected by a detector 6 provided in relation to the crankshaft 10. These detection b5,
The output from 6 is given to a processing device 7 including a microcomputer and the like. The processing device [7 controls the fuel injection valves 4 in response to the outputs from these detectors 5.6, thereby controlling the discrete fuel injection lid in the internal combustion engine.
処理装置！［７における記憶手段（図示せず）には、内
勢機関ｌの回転数ごとに対応して予め設定されたスロッ
トル弁３の開度すなわち内燃機関ｌの負荷がストアされ
ている。このストアされる内燃機関ｌの負向の設定値は
、第１の設定値と、第１の設定値よりも大きい第２の設
定値とから成る一対の設足イｌから構成される。検出器
５によって検出されるスロットル開度が、その回転数に
対応して予めストアしてろるｍｌの設定値よりも大きい
値であるときには、処理装置７は燃料噴射弁４によって
吸気社略２内に燃料噴射を行なう。また、小さいときに
は、燃料噴射弁４による燃料噴射が停止される。したが
ってスロットル弁３が最小の紋り菫になったときはもち
ろんそれ以外のときにでも燃料噴射の停止が行なわれる
ことができ、これによって燃料拍費菫の低減が図られる
。Processing equipment! The storage means (not shown) in [7] stores the opening degree of the throttle valve 3, that is, the load of the internal combustion engine l, which is set in advance for each rotational speed of the internal engine l. This stored negative setting value of the internal combustion engine I is composed of a pair of sets consisting of a first setting value and a second setting value that is larger than the first setting value. When the throttle opening degree detected by the detector 5 is larger than the preset value of ml stored in advance corresponding to the rotation speed, the processing device 7 causes the fuel injection valve 4 to inject the air into the intake valve 2. Perform fuel injection. Moreover, when it is small, fuel injection by the fuel injection valve 4 is stopped. Therefore, fuel injection can be stopped not only when the throttle valve 3 reaches the minimum level of violet, but also at other times, thereby reducing fuel consumption.
また処理装置７が燃料噴射弁４によって燃料噴射の停止
状態から衿び燃料噴射を行なうの１よ、検出器５によっ
て検出されるスロットル開展が、第ｌの設定値よりも大
きい値となったときとされる。In addition, when the throttle opening detected by the detector 5 becomes a value larger than the l-th set value, the processing device 7 performs the tail-end fuel injection by the fuel injection valve 4 from the stop state of fuel injection. It is said that
このとき構出負荷が第２の設定値よりも大きい値となら
すに丹ひ第１の設定値よりも小さい憧となったときには
、燃料噴射の停止は行なわれない。At this time, if the output load becomes larger than the second set value but smaller than the first set value, fuel injection is not stopped.
したがって処理装置Ｉｔ７における燃料噴射および停止
の刊足は、１つの設定値だけで行なわれないので、後述
のように内燃機関ｌの運転状態にハンチングが発生する
ことが防止される。Therefore, the timing of fuel injection and stop in the processing device It7 is not performed based on only one set value, so that hunting in the operating state of the internal combustion engine I is prevented from occurring as described later.
第２図は、内燃機関ｌの回転数と、そのクランク軸１０
の軸トルクとの関係を示すグラフで委る。Figure 2 shows the rotational speed of the internal combustion engine l and its crankshaft 10.
A graph showing the relationship between shaft torque and shaft torque.
各曲想１１−１７はスロットル開度を変化させたときの
各特性を示し、曲１１ｄｌ！ｌはスロットル開度が最小
のアイドリンク状態における特性ｋｙｒくし、曲ｉ／７
はスロットル開展が全開状態における特性を示す。直線
１８すなわち第２図で示されるグラフの回転数軸は、内
燃機関ｌの軸トルクが苓でるる無負荷の状態でスロット
ル開展を笈えたときの特性を示す。したがって各曲線ｌ
！ｌ−／７と直１ｄ１８とのトルクの差が正である範囲
（第２図において＠―１８よりも上方）では、内燃機関
ｌがら動力が出力されている。本発明に従えば、前記ト
ルクの差が負でるるとき（第２図において直線１８より
も下方）における各回転数ごとのスロットル開度が予め
設定されてストアされる。このストアされる各回転数ご
とのスロットル開度における特性はたとえば曲線／９．
／１０で示される。Each song 11-17 shows each characteristic when changing the throttle opening, and song 11dl! l is the characteristic kyr comb in the idle link state where the throttle opening is the minimum, and the curve i/7
shows the characteristics when the throttle is fully open. The straight line 18, that is, the rotational speed axis of the graph shown in FIG. 2, shows the characteristics when the throttle is opened in a no-load state where the shaft torque of the internal combustion engine l is at a low level. Therefore each curve l
! In the range where the difference in torque between l-/7 and straight 1d18 is positive (above @-18 in FIG. 2), power is output from the internal combustion engine l. According to the present invention, the throttle opening degree for each rotational speed when the torque difference becomes negative (below the straight line 18 in FIG. 2) is preset and stored. The characteristic of the throttle opening for each rotation speed stored is, for example, a curve /9.
/10.
ここで曲線１９は前述の第１の設定値に対応し、１憩／
１０は第２の設定値に対応する。Here, curve 19 corresponds to the above-mentioned first set value, and 1 break/
10 corresponds to the second set value.
処理装置ｈｔ７は、検出器６によって検出された回転数
Ｎにおける実際のスロットル開展と、曲ＩＶＩｌ１９上
の点Ｍｌにおけるスロットル開度とを比較し、実際のス
ロットル一度が点Ｍｌにおけるスロットル一度よりも大
きいときに燃料噴射弁４による燃料噴射を行なう。また
実際のスロットル開度が点Ｍｌにおけるスロットル一度
よりも小さいときに、燃料噴射弁４による燃料噴射を停
止する。The processing device ht7 compares the actual throttle opening at the rotation speed N detected by the detector 6 and the throttle opening at the point Ml on the song IVIl19, and determines that the actual throttle opening is larger than the throttle opening at the point Ml. Sometimes, fuel is injected by the fuel injection valve 4. Further, when the actual throttle opening is smaller than the throttle opening at point Ml, fuel injection by the fuel injection valve 4 is stopped.
こうしてスロットル一度が曲に／ｌと曲線１９とで囲ま
れる斜線を施した領域Ａにおいては、燃料の噴射の停止
が行なわれることになる。In this way, in the hatched area A surrounded by /l and the curve 19 when the throttle is turned once, fuel injection is stopped.
また処理装置７が燃料噴射弁４によって燃料噴射停止の
状態から再び燃料噴射を行なうのは、実際のスロットル
開度が＠紬１９上の点Ｍｌにおけるスロットル開度より
も大きいときとされる。このとき実際のスロットル開度
が、曲ｆｉ／１０上の点Ｍ２よりも大きい値とならずに
再び領域Ａに移ったとき、すなわち１憩１！９と曲線１
１０とで囲まれる斜縁全施した領域Ｂから領域ムに移っ
たときには、処理装置７は燃料噴射弁４における燃料噴
射の停止は行なわない。これによって内燃機関ｌは、処
理装置７が１つの設定値たとえば曲線１９で示される第
１の設定値だけで燃料の噴射およ′び停止ｔ−判定する
ときに生じる？ｌＩ］能性のあるハンチングの発生が防
止される。Furthermore, the processing device 7 injects fuel again from the fuel injection stopped state using the fuel injection valve 4 when the actual throttle opening is larger than the throttle opening at the point M1 on @Tsumugi 19. At this time, when the actual throttle opening does not become larger than point M2 on curve fi/10 and moves to area A again, that is, when curve 1 is 1!9 and curve 1 is
When moving from area B, which has the entire beveled edge surrounded by 10, to area M, the processing device 7 does not stop the fuel injection at the fuel injection valve 4. As a result, the internal combustion engine 1 occurs when the processing device 7 determines the injection and stopping of fuel with only one set value, for example the first set value represented by the curve 19? lI] potential hunting is prevented.
上述の夷Ｗｌｉ５’ｌＪでは内燃機関ｌの負荷としてス
ロットル弁３の一度が検出されたけれども、本発明の他
の実施例として吸気経路２における吸気空気量や吸気負
圧などが検出されるようにしてもよい。In the above-mentioned case Wli5'lJ, one time of the throttle valve 3 is detected as the load of the internal combustion engine l, but in another embodiment of the present invention, the intake air amount, intake negative pressure, etc. in the intake path 2 are detected. It's okay.
前述の先行技術では第２図の曲ｆｉ／ｌ上においてのみ
燃料噴射の停止が行なわれていた。本発明によれば、ヌ
ロットル開度のさらに広い領域Ａにおいて燃料噴射の停
止が行なわれ、−これによって先行技術に戦べて燃料油
＊＊が低減されることがわかる。In the prior art described above, fuel injection was stopped only on the curve fi/l shown in FIG. It can be seen that according to the present invention, fuel injection is stopped in a wider range A of the throttle opening, thereby reducing the amount of fuel oil** compared to the prior art.
以上のよりに本発明によれば、ハンチングの発生を防止
するとともに内燃機関の燃料消費量の低減が可Ｎとにな
る。As described above, according to the present invention, the occurrence of hunting can be prevented and the fuel consumption of the internal combustion engine can be reduced.
第１図は本発明の一実施例の全体の系統図、第２図はそ
の動作を説明するためのグラフでるる。
１・・・内燃機関、２・・・吸気経路、３・・・スロッ
トル弁、４・・・燃料噴射弁、５．６・・・検出器、７
・・・処理装置
代理人 弁理士 西教圭一部
第１図FIG. 1 is an overall system diagram of an embodiment of the present invention, and FIG. 2 is a graph for explaining its operation. DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 2... Intake path, 3... Throttle valve, 4... Fuel injection valve, 5.6... Detector, 7
...Processing equipment agent Patent attorney Kei Nishi Part 1 Figure 1
Claims (1)
ｄにおける検出負荷が、回転数ごとに対応して予めスト
アしである第１の設定値よりも大きい値でめるときに内
燃機関への燃料噴射を行ない、小さい値でろるときに燃
料噴射を停止し、しかも−展検出負句が第１の設定値よ
シ小さくなり燃料噴射が停止された状態になった後検出
負荷が“第１の設定値よりも大きな第２の設定値”より
も大きい値とはならずに再び第１の設定値よりも小さい
値となったときには、燃料噴射の停止を行なわないこと
を特徴とする内燃機関の燃料噴射方法０Detects the load and rotation speed of the FE3 combustion engine, and uses the detector k
Fuel injection to the internal combustion engine is performed when the detected load at step d is larger than a first set value stored in advance corresponding to each rotational speed, and fuel injection is performed when the detected load is smaller than the first set value. After the engine stops and the negative expansion detection becomes smaller than the first set value and fuel injection is stopped, the detected load becomes lower than "the second set value that is larger than the first set value". Fuel injection method for an internal combustion engine 0 characterized in that fuel injection is not stopped when the value does not become large but becomes smaller than the first set value again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56126394A JPS5827818A (en) | 1981-08-12 | 1981-08-12 | Method of injecting fuel of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56126394A JPS5827818A (en) | 1981-08-12 | 1981-08-12 | Method of injecting fuel of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5827818A true JPS5827818A (en) | 1983-02-18 |
Family
ID=14934049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56126394A Pending JPS5827818A (en) | 1981-08-12 | 1981-08-12 | Method of injecting fuel of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986860A (en) * | 1987-09-18 | 1991-01-22 | Kyowa Leather Cloth Co., Ltd. | Method for producing a laminated material |
-
1981
- 1981-08-12 JP JP56126394A patent/JPS5827818A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986860A (en) * | 1987-09-18 | 1991-01-22 | Kyowa Leather Cloth Co., Ltd. | Method for producing a laminated material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6196173B1 (en) | Valve timing control system for internal combustion engine | |
| JPH0797960A (en) | Self-diagnostic device for exhaust gas recirculation device | |
| JPH05187240A (en) | Air intake control device for internal combustion engine | |
| US6640791B2 (en) | EGR valve control apparatus | |
| JP3075181B2 (en) | Abnormality determination device for exhaust gas recirculation device | |
| JPS5827818A (en) | Method of injecting fuel of internal-combustion engine | |
| KR950019103A (en) | Fuel injection control device for internal combustion engines | |
| JPH09329062A (en) | Abnormality judging device for exhaust gas recirculating device | |
| JP3005718B2 (en) | Exhaust gas recirculation control system for diesel engine | |
| KR100300710B1 (en) | Method for controlling exhaust gas recycling system for free accelerator smoke test mode | |
| JPS61155640A (en) | Method for controlling fuel injection | |
| JPH07253052A (en) | Exhaust gas recirculation controller of engine | |
| JPH04134145A (en) | Deceleration controller for engine | |
| JPH10306734A (en) | Controller for diesel engine | |
| JPH0842385A (en) | Fully closed throttle valve detector for internal combustion engine | |
| KR19980011408U (en) | Injection fuel amount correction device | |
| JPH06307267A (en) | Isc mechanism | |
| JPS6170150A (en) | Idling revolution speed controller of engine mounted on vehicle | |
| JPH04143448A (en) | Exhaust reflux device for diesel engine | |
| JPH0330601Y2 (en) | ||
| JPH03199653A (en) | Atmospheric pressure detection for internal combustion engine | |
| JPS6043145A (en) | Method of controlling asynchronous injection of fuel at the time of accelerating electronically controlled fuel injection type engine | |
| JP2000220502A (en) | Control device for diesel engine | |
| JPH0361643A (en) | Atmospheric pressure correction for engine | |
| JPS63176639A (en) | Fuel controller for engine |