JPS6324342U - - Google Patents
Info
- Publication number
- JPS6324342U JPS6324342U JP11813686U JP11813686U JPS6324342U JP S6324342 U JPS6324342 U JP S6324342U JP 11813686 U JP11813686 U JP 11813686U JP 11813686 U JP11813686 U JP 11813686U JP S6324342 U JPS6324342 U JP S6324342U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- engine
- rich
- lean
- 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 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の基本概念図、第２〜１４図は
本考案の一実施例を示す図であり、第２図はその
全体構成図、第３図はその酸素センサの分解斜視
図、第４図はその酸素センサの断面図、第５図は
その空燃比検出回路の構成を示す回路図、第６図
はそのシリンダ空気量ＱＡｃｙＬの算出プログラ
ムを示すフローチヤート、第７図はそのスロツト
ル弁流路面積Ａαのテーブルマツプ、第８図はそ
のバイパス路面積ＡＢのテーブルマツプ、第９図
は総流路面積Ａをエンジン回転数Ｎで除したＡ／
Ｎとエンジン回転数Ｎとをパラメータとする定常
空気量ＱＨのテーブルマツプ、第１０図はその遅
れ係数Ｋ２のテーブルマツプ、第１１図はそのイ
ンジエクタ空気量ＱＡｉｎｊの算出プログラムを
示すフローチヤート、第１２図はそのＳｔｅｐＰ
分演算プログラムを示すフローチヤート、第１３
図はそのストイチＡ／Ｆ補正係数演算プログラム
を示すフローチヤート、第１４図はそのストイチ
以外のＡ／Ｆ演算プログラムを示すフローチヤー
トである。
７…インジエクタ（操作手段）、３０…スロツ
トルセンサ（運転状態検出手段）、３１…水温セ
ンサ（運転状態検出手段）、３３…酸素センサ、
３４…空燃比検出回路（空燃比検出手段）、５０
…コントロールユニツト（リツチ・リーン判別手
段、制御手段）。
Fig. 1 is a basic conceptual diagram of the present invention, Figs. 2 to 14 are diagrams showing an embodiment of the invention, Fig. 2 is an overall configuration diagram thereof, Fig. 3 is an exploded perspective view of the oxygen sensor, Fig. 4 is a sectional view of the oxygen sensor, Fig. 5 is a circuit diagram showing the configuration of the air-fuel ratio detection circuit, Fig. 6 is a flowchart showing the calculation program for the cylinder air amount QA cy L, and Fig. 7 is Figure 8 is a table map of the throttle valve passage area Aα, Figure 8 is a table map of the bypass passage area AB, and Figure 9 is the total passage area A divided by the engine speed N.
FIG. 10 is a table map of the steady air amount QH with N and engine speed N as parameters, FIG. 10 is a table map of the delay coefficient K2 , FIG. 11 is a flowchart showing a calculation program for the injector air amount QA inj , Figure 12 shows the Step P
Flowchart showing the minute calculation program, No. 13
The figure is a flowchart showing the stoichiometric A/F correction coefficient calculation program, and FIG. 14 is a flowchart showing the A/F calculation program other than the stoichiometry. 7... Injector (operating means), 30... Throttle sensor (operating state detecting means), 31... Water temperature sensor (operating state detecting means), 33... Oxygen sensor,
34...Air-fuel ratio detection circuit (air-fuel ratio detection means), 50
...control unit (rich/lean discrimination means, control means).
Claims (1)
出手段と、 (b) 排気中の酸素濃度に相関するポンプ電流が
供給され理論空燃比を境にポンプ電圧が急変する
ポンプセルと、所定の基準ガスとの比較のもとに
前記相関状態を監視する電圧を出力するセンサセ
ルと、を有する酸素センサと、 (c) 酸素センサにポンプ電流を供給し、このポ
ンプ電流値から空燃比を検出する空燃比検出手段
と、 (d) 酸素センサのポンプ電圧の急変状態に基づ
いて理論空燃比を境とする空燃比のリツチ、リー
ンを判別するリツチ・リーン判別手段と、 (e) 空燃比検出手段の出力に基づいて空燃比が
目標空燃比となるように吸入空気あるいは燃料の
供給量を制御するとともに、この制御に際して目
標空燃比が理論空燃比のときリツチ・リーン判別
手段の出力に基づいて補正分を加え、エンジンが
アルドル状態あるいはエンジンが冷機状態であれ
ば該補正分を加えない制御手段と、 (f) 制御手段の出力に基づいて吸入空気あるい
は燃料の供給量を操作する操作手段と、 を備えたことを特徴とする内燃機関の空燃比制御
装置。[Scope of Claim for Utility Model Registration] (a) An operating state detection means for detecting the operating state of the engine; (b) A pump current that correlates to the oxygen concentration in the exhaust gas is supplied and the pump voltage suddenly changes at the stoichiometric air-fuel ratio. (c) supplying a pump current to the oxygen sensor and determining the pump current value based on a comparison with a predetermined reference gas; (d) rich/lean determining means for determining whether the air-fuel ratio is rich or lean with respect to the stoichiometric air-fuel ratio based on a sudden change in the pump voltage of the oxygen sensor; e) Controlling the intake air or fuel supply amount so that the air-fuel ratio becomes the target air-fuel ratio based on the output of the air-fuel ratio detection means, and during this control, rich/lean determining means when the target air-fuel ratio is the stoichiometric air-fuel ratio. (f) a control means which adds a correction amount based on the output of the engine and does not add the correction amount when the engine is in an altruistic state or when the engine is in a cold state; An air-fuel ratio control device for an internal combustion engine, comprising: an operating means for operating; and an air-fuel ratio control device for an internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11813686U JPS6324342U (en) | 1986-07-31 | 1986-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11813686U JPS6324342U (en) | 1986-07-31 | 1986-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6324342U true JPS6324342U (en) | 1988-02-17 |
Family
ID=31004303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11813686U Pending JPS6324342U (en) | 1986-07-31 | 1986-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6324342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01117959A (en) * | 1987-10-30 | 1989-05-10 | Honda Motor Co Ltd | Air-fuel ratio feedback control for internal combustion engine |
-
1986
- 1986-07-31 JP JP11813686U patent/JPS6324342U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01117959A (en) * | 1987-10-30 | 1989-05-10 | Honda Motor Co Ltd | Air-fuel ratio feedback control for internal combustion engine |
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