JPS61171851U - - Google Patents
Info
- Publication number
- JPS61171851U JPS61171851U JP5587885U JP5587885U JPS61171851U JP S61171851 U JPS61171851 U JP S61171851U JP 5587885 U JP5587885 U JP 5587885U JP 5587885 U JP5587885 U JP 5587885U JP S61171851 U JPS61171851 U JP S61171851U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- rotation speed
- air amount
- target
- 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 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 230000000979 retarding effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Description
第１図はこの考案の構成概念図、第２図はこの
考案の一実施例の機械的構成の概略図、第３図Ａ
及びＢはその制御系統の動作内容の一例を表す流
れ図、第４図は空燃比の制御特性線図、第５図は
空燃比と最適点火時期との関係を示す線図である
。
１…内燃機関、３…エアフローメータ、６…電
磁燃料噴射弁、７…吸気絞り弁、８…点火栓、９
…点火装置、２０…制御装置、２１…中央処理装
置、２２…記憶装置、２３…入出力処理装置、２
４…クランク角センサ、２７…スロツトルポジシ
ヨンセンサ。
Figure 1 is a conceptual diagram of the structure of this invention, Figure 2 is a schematic diagram of the mechanical configuration of an embodiment of this invention, and Figure 3A.
4 is a control characteristic diagram of the air-fuel ratio, and FIG. 5 is a diagram showing the relationship between the air-fuel ratio and the optimum ignition timing. 1... Internal combustion engine, 3... Air flow meter, 6... Electromagnetic fuel injection valve, 7... Intake throttle valve, 8... Spark plug, 9
...Ignition device, 20...Control device, 21...Central processing unit, 22...Storage device, 23...Input/output processing device, 2
4...Crank angle sensor, 27...Throttle position sensor.
Claims (1)
段と、同じく回転数を検出する回転数検出手段と
、前記吸気量と回転数とに基づいて機関の１吸入
行程あたりの吸入空気量を演算する吸気量演算手
段と、この演算吸気量と回転数とに基づいて定常
的運転状態での目標空燃比を演算する空燃比演算
手段と、機関の加速状態を検出する加速検出手段
と、前記加速状態に基づいて前記目標空燃比を補
正する空燃比補正手段とを有し、かつ前記空燃比
演算手段は所定の運転状態下にて所定の希薄側目
標空燃比を付与するとともに、前記空燃比補正手
段は前記希薄空燃比運転状態からの加速時に目標
空燃比を濃側に補正するように構成される空燃比
制御装置を備えた内燃機関において、前記演算吸
気量と回転数とに基づいて定常的運転状態での目
標点火時期を演算する点火時期演算手段と、加速
時に前記補正された目標空燃比に応じて前記目標
点火時期を遅角補正する点火時期補正手段とを備
えたことを特徴とする希薄燃焼機関の点火時期制
御装置。 An intake air amount detection means for detecting the intake air amount of the internal combustion engine, a rotation speed detection means for also detecting the rotation speed, and an intake air amount per one intake stroke of the engine is calculated based on the intake air amount and the rotation speed. an air-fuel ratio calculating means for calculating a target air-fuel ratio in a steady operating state based on the calculated intake air amount and rotational speed; an acceleration detecting means for detecting an acceleration state of the engine; and an air-fuel ratio correction means for correcting the target air-fuel ratio based on the air-fuel ratio, and the air-fuel ratio calculation means provides a predetermined lean-side target air-fuel ratio under a predetermined operating condition, and the air-fuel ratio correction means is an internal combustion engine equipped with an air-fuel ratio control device configured to correct the target air-fuel ratio to the rich side when accelerating from the lean air-fuel ratio operating state, during steady operation based on the calculated intake air amount and rotation speed. and ignition timing correction means for retarding the target ignition timing in accordance with the corrected target air-fuel ratio during acceleration. Combustion engine ignition timing control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587885U JPS61171851U (en) | 1985-04-15 | 1985-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587885U JPS61171851U (en) | 1985-04-15 | 1985-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61171851U true JPS61171851U (en) | 1986-10-25 |
Family
ID=30578966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5587885U Pending JPS61171851U (en) | 1985-04-15 | 1985-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385260A (en) * | 1986-09-25 | 1988-04-15 | Nippon Denso Co Ltd | Ignition timing controller for internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51120307A (en) * | 1975-04-14 | 1976-10-21 | Nippon Soken Inc | Internal combustion engine |
| JPS55156260A (en) * | 1979-05-25 | 1980-12-05 | Mitsubishi Electric Corp | Ignition timing controller for internal combustion engine |
| JPS6050241A (en) * | 1983-08-30 | 1985-03-19 | Toyota Motor Corp | Air-fuel ratio moderating control method for electronically controlled engine |
-
1985
- 1985-04-15 JP JP5587885U patent/JPS61171851U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51120307A (en) * | 1975-04-14 | 1976-10-21 | Nippon Soken Inc | Internal combustion engine |
| JPS55156260A (en) * | 1979-05-25 | 1980-12-05 | Mitsubishi Electric Corp | Ignition timing controller for internal combustion engine |
| JPS6050241A (en) * | 1983-08-30 | 1985-03-19 | Toyota Motor Corp | Air-fuel ratio moderating control method for electronically controlled engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385260A (en) * | 1986-09-25 | 1988-04-15 | Nippon Denso Co Ltd | Ignition timing controller for internal combustion engine |
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