JPS6360048U - - Google Patents
Info
- Publication number
- JPS6360048U JPS6360048U JP15306786U JP15306786U JPS6360048U JP S6360048 U JPS6360048 U JP S6360048U JP 15306786 U JP15306786 U JP 15306786U JP 15306786 U JP15306786 U JP 15306786U JP S6360048 U JPS6360048 U JP S6360048U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- flow rate
- correction coefficient
- air flow
- intake air
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成ブロツク図、第２図は本
考案の一実施例を示すシステム概略図、第３図は
同上実施例における補正係数Ａ設定ルーチンを示
すフローチヤート、第４図は空燃比フイードバツ
ク補正係数αとＯ２センサ出力電圧との関係を示
すタイムチヤート、第５図は同上実施例における
燃料噴射量Ｔｉ設定ルーチンを示すフローチヤー
ト、第６図は同上実施例における学習領域及び補
正領域を示すグラフ、第７図は熱線式流量計の検
出精度の低下傾向を示すグラフである。
１……Ｏ２センサ、２……熱線式流量計、３…
…回転速度センサ、５……コントロールユニツト
、６……駆動回路、７……燃料噴射弁。
Fig. 1 is a block diagram of the configuration of the present invention, Fig. 2 is a system schematic diagram showing an embodiment of the invention, Fig. 3 is a flowchart showing a correction coefficient A setting routine in the above embodiment, and Fig. 4 is a blank diagram. A time chart showing the relationship between the fuel ratio feedback correction coefficient α and the O 2 sensor output voltage, Fig. 5 a flowchart showing the fuel injection amount Ti setting routine in the above embodiment, and Fig. 6 a learning area and correction in the above embodiment. FIG. 7, which is a graph showing the area, is a graph showing a tendency for the detection accuracy of the hot wire flowmeter to decrease. 1... O2 sensor, 2...hot wire flow meter, 3...
...Rotational speed sensor, 5...Control unit, 6...Drive circuit, 7...Fuel injection valve.
Claims (1)
で構成され機関の吸入空気流量を検出する吸入空
気流量検出手段と、機関の回転速度を検出する機
関回転速度検出手段と、検出された吸入空気流量
及び機関回転速度に基づいて基本燃料噴射量を設
定する基本燃料噴射量設定手段と、排気系に設け
たＯ２センサからの信号に基づいて検出される実
際の空燃比と目標空燃比とを比較して空燃比フイ
ードバツク補正係数を設定する空燃比フイードバ
ツク補正係数設定手段と、設定された基本燃料噴
射量に前記空燃比フイードバツク補正係数を乗算
して燃料噴射量を設定する燃料噴射量設定手段と
、設定された空燃比フイードバツク補正係数に基
づき吸入空気流量の補正係数を設定する吸入空気
流量補正係数設定手段と、設定された吸入空気流
量補正係数に基づき検出された吸入空気流量を補
正する吸入空気流量補正手段と、設定された燃料
噴射量に応じて燃料噴射弁を駆動制御する燃料噴
射弁駆動制御手段と、を備えてなる内燃機関の電
子制御燃料噴射装置。 an intake air flow rate detection means for detecting the intake air flow rate of the engine, which includes a temperature-sensitive resistor interposed in the intake passage of the engine; an engine rotation speed detection means for detecting the rotation speed of the engine; A basic fuel injection amount setting means that sets the basic fuel injection amount based on the intake air flow rate and engine rotational speed, and an actual air-fuel ratio and a target air-fuel ratio that are detected based on a signal from an O2 sensor installed in the exhaust system. an air-fuel ratio feedback correction coefficient setting means for setting an air-fuel ratio feedback correction coefficient by comparing the basic fuel injection quantity with the air-fuel ratio feedback correction coefficient; and a fuel injection quantity setting unit for setting the fuel injection quantity by multiplying the set basic fuel injection quantity by the air-fuel ratio feedback correction coefficient. and an intake air flow rate correction coefficient setting means for setting an intake air flow rate correction coefficient based on the set air-fuel ratio feedback correction coefficient, and correcting the detected intake air flow rate based on the set intake air flow rate correction coefficient. An electronically controlled fuel injection device for an internal combustion engine, comprising an intake air flow rate correction means and a fuel injection valve drive control means for driving and controlling a fuel injection valve according to a set fuel injection amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986153067U JPH0517398Y2 (en) | 1986-10-07 | 1986-10-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986153067U JPH0517398Y2 (en) | 1986-10-07 | 1986-10-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6360048U true JPS6360048U (en) | 1988-04-21 |
| JPH0517398Y2 JPH0517398Y2 (en) | 1993-05-11 |
Family
ID=31071618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986153067U Expired - Lifetime JPH0517398Y2 (en) | 1986-10-07 | 1986-10-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517398Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596339A (en) * | 1979-01-13 | 1980-07-22 | Nippon Denso Co Ltd | Air-fuel ratio control method |
| JPS55134730A (en) * | 1979-04-06 | 1980-10-20 | Hitachi Ltd | Controlling method of fuel for internal combustion engine |
-
1986
- 1986-10-07 JP JP1986153067U patent/JPH0517398Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596339A (en) * | 1979-01-13 | 1980-07-22 | Nippon Denso Co Ltd | Air-fuel ratio control method |
| JPS55134730A (en) * | 1979-04-06 | 1980-10-20 | Hitachi Ltd | Controlling method of fuel for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517398Y2 (en) | 1993-05-11 |