JPH0191055U - - Google Patents
Info
- Publication number
- JPH0191055U JPH0191055U JP18729287U JP18729287U JPH0191055U JP H0191055 U JPH0191055 U JP H0191055U JP 18729287 U JP18729287 U JP 18729287U JP 18729287 U JP18729287 U JP 18729287U JP H0191055 U JPH0191055 U JP H0191055U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- temperature
- detecting
- operating state
- 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 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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２〜９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図はシリンダ空気量ＱＡｃｙＬｇ
の算出プログラムを示すフローチヤート、第４図
はそのスロツトル弁流路面積Ａαのテーブルマツ
プ、第５図はそのバイパス路面積ＡＢのテーブル
マツプ、第６図はその総流路面積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７図はその遅れ係数Ｋ２のテーブルマツプ、
第８図はそのインジエクタ部空気量ＱＡｉｎｊｇ
の算出プログラムを示すフローチヤート、第９図
はその目標空燃比の値を設定するプログラムを示
すフローチヤートである。
１……エンジン、７……インジエクタ（操作手
段）、３１……水温センサ（水温検出手段）、３
２……吸気温センサ（吸気温検出手段）、４１…
…運転状態検出手段、５０……コントロールユニ
ツト（目標設定手段、制御手段）。
Fig. 1 is a basic conceptual diagram of the present invention, Figs. 2 to 9 are diagrams showing one embodiment of the invention, Fig. 2 is its overall configuration diagram, and Fig. 3 is a cylinder air amount QA cy L g.
Figure 4 is a table map of the throttle valve passage area Aα, Figure 5 is a table map of the bypass passage area AB, and Figure 6 is a flowchart showing the calculation program for the throttle valve passage area A. Table map of steady air amount QH using A/N divided by N and engine speed N as parameters, FIG. 7 is a table map of its delay coefficient K2,
Figure 8 shows the amount of air in the injector QA injg
FIG. 9 is a flowchart showing a program for setting the target air-fuel ratio. 1...Engine, 7...Injector (operating means), 31...Water temperature sensor (water temperature detection means), 3
2...Intake temperature sensor (intake temperature detection means), 41...
. . . Operating state detection means, 50 . . . Control unit (target setting means, control means).
Claims (1)
手段と、 ｂ 冷却水の温度を検出する水温検出手段と、 ｃ 吸入空気の温度を検出する吸気温検出手段と
、 ｄ エンジンの運転状態に応じて目標空燃比を設
定し、少なくとも定常走行の一部において該目標
空燃比を理論空燃比よりリーン側に選択するとと
もに、理論空燃比よりリーン側に選択する場合で
あつても冷却水温度と吸入空気温度との差が所定
範囲内にないときはリーン側への選択を禁止する
目標設定手段と、 ｅ 目標設定手段により設定された目標空燃比と
なるように燃料の供給量あるいは吸入空気量を制
御する制御手段と、 ｆ 制御手段からの信号に基づいて燃料の供給量 あるいは吸入空気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. Operating state detecting means for detecting the operating state of the engine; b. Water temperature detecting means for detecting the temperature of cooling water; c. Intake temperature detecting means for detecting the temperature of intake air; d. A target air-fuel ratio is set according to the operating state of the engine, and the target air-fuel ratio is selected to be leaner than the stoichiometric air-fuel ratio during at least a part of steady driving, and the target air-fuel ratio is selected to be leaner than the stoichiometric air-fuel ratio. a target setting means for prohibiting selection to the lean side when the difference between the cooling water temperature and the intake air temperature is not within a predetermined range; an air-fuel ratio control for an internal combustion engine, comprising: a control means for controlling the fuel supply amount or the intake air amount; and an operation means for manipulating the fuel supply amount or the intake air amount based on a signal from the control means. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18729287U JPH0191055U (en) | 1987-12-08 | 1987-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18729287U JPH0191055U (en) | 1987-12-08 | 1987-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0191055U true JPH0191055U (en) | 1989-06-15 |
Family
ID=31478456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18729287U Pending JPH0191055U (en) | 1987-12-08 | 1987-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0191055U (en) |
-
1987
- 1987-12-08 JP JP18729287U patent/JPH0191055U/ja active Pending