JPH01134748U - - Google Patents
Info
- Publication number
- JPH01134748U JPH01134748U JP3027788U JP3027788U JPH01134748U JP H01134748 U JPH01134748 U JP H01134748U JP 3027788 U JP3027788 U JP 3027788U JP 3027788 U JP3027788 U JP 3027788U JP H01134748 U JPH01134748 U JP H01134748U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection amount
- engine
- setting
- 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 28
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成を示す機能ブロツク図、
第２図は本考案の一実施例を示すシステム図、第
３図は同上実施例における燃料噴射量演算ルーチ
ンを示すフローチヤート、第４図は同上実施例に
おける空燃比フイードバツク補正係数ＬＡＭＢＤ
Ａの比例・積分制御ルーチンを示すフローチヤー
ト、第５図は同上実施例における有効開口面積マ
ツプ修正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判定運転状態を示すグラフ
、第７図は空燃比フイードバツク補正係数ＬＡＭ
ＢＤＡの変化の様子を示すタイムチヤート、第８
図はスロツトル弁開度θに対する有効開口面積Ａ
の変化を示すグラフ、第９図はスロツトル弁周囲
が汚れたときのスロツトル弁開度θに対する有効
開口面積Ａの変化率を示すグラフ、第１０図はス
ロツトル弁周囲の汚れの影響による空燃比のリツ
チ化を説明するためのグラフである。
１…機関、４…スロツトル弁、６…燃料噴射弁
、１２…コントロールユニツト、１３…スロツト
ル弁開度センサ、１４…クランク角センサ、１６
…Ｏ２センサ。
Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is a system diagram showing an embodiment of the present invention, Fig. 3 is a flowchart showing a fuel injection amount calculation routine in the above embodiment, and Fig. 4 is an air-fuel ratio feedback correction coefficient LAMBD in the above embodiment.
FIG. 5 is a flowchart showing the effective opening area map correction routine in the above embodiment. FIG. 6 is a graph showing the judgment operation state in the above embodiment. Air-fuel ratio feedback correction coefficient LAM
Time chart showing changes in BDA, No. 8
The figure shows the effective opening area A for the throttle valve opening θ.
9 is a graph showing the rate of change in the effective opening area A with respect to the throttle valve opening θ when the area around the throttle valve is dirty. Figure 10 is a graph showing the change in the air-fuel ratio due to the effect of dirt around the throttle valve. This is a graph for explaining enrichment. DESCRIPTION OF SYMBOLS 1... Engine, 4... Throttle valve, 6... Fuel injection valve, 12... Control unit, 13... Throttle valve opening sensor, 14... Crank angle sensor, 16
... O2 sensor.
Claims (1)
度を検出するスロツトル弁開度検出手段と、 機関の回転速度を検出する機関回転速度検出手
段と、 スロツトル弁開度と機関回転速度との検出値に
基づいて当該運転状態における機関の吸入空気流
量を設定し該吸入空気流量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、 機関排気成分を検出しこれにより機関吸入混合
気の空燃比を検出する空燃比検出手段と、 該空燃比検出手段により検出された空燃比と目
標空燃比とを比較して実際の空燃比を目標空燃比
に近づけるように前記基本燃料噴射量を補正する
ためのフイードバツク補正値を所定の量増減して
設定するフイードバツク補正値設定手段と、 少なくとも前記基本燃料噴射量設定手段で設定
した基本燃料噴射量と前記フイードバツク補正値
設定手段で設定したフイードバツク補正値とに基
づいて燃料噴射量を設定する燃料噴射量設定手段
と、 該燃料噴射量設定手段で設定した燃料噴射量に
相当する駆動パルス信号に応じオン・オフ的に燃
料を機関に噴射供給する燃料噴射手段と、 スロツトル弁開度と機関回転速度とをパラメー
タとして区分される複数の運転状態のエリア毎に
前記フイードバツク補正値の基準値に対する偏差
を学習する偏差学習手段と、 該偏差学習手段により学習された前記偏差に基
づいて当該エリアにおける前記基本燃料噴射量設
定手段による基本燃料噴射量の設定誤差を検出す
る設定誤差検出手段と、 検出されたエリア毎の設定誤差に基づいて前記
基本燃料噴射量設定手段における当該エリアに対
応する基本燃料噴射量の設定量を修正する基本燃
料噴射量修正手段と、 を含んで構成されることを特徴とする内燃機関
の電子制御燃料噴射装置。[Scope of Claim for Utility Model Registration] Throttle valve opening detection means for detecting the opening of a throttle valve installed in an intake passage of an engine; engine rotational speed detection means for detecting the rotational speed of the engine; basic fuel injection amount setting means for setting the intake air flow rate of the engine in the relevant operating state based on the detected values of engine speed and engine rotational speed, and setting the basic fuel injection amount based on the intake air flow rate; an air-fuel ratio detecting means for detecting the air-fuel ratio of an engine intake air-fuel mixture; and comparing the air-fuel ratio detected by the air-fuel ratio detecting means with a target air-fuel ratio to bring the actual air-fuel ratio closer to the target air-fuel ratio. a feedback correction value setting means for increasing or decreasing a feedback correction value by a predetermined amount to correct the basic fuel injection amount; and at least the basic fuel injection amount set by the basic fuel injection amount setting means and the feedback correction value. a fuel injection amount setting means for setting the fuel injection amount based on the feedback correction value set by the value setting means; a fuel injection means for injecting and supplying fuel to the engine; and a deviation learning device that learns the deviation of the feedback correction value from the reference value for each of a plurality of operating state areas classified using the throttle valve opening degree and the engine rotational speed as parameters. means, a setting error detection means for detecting a setting error of the basic fuel injection amount by the basic fuel injection amount setting means in the area based on the deviation learned by the deviation learning means; and setting error detection means for each detected area. An electronic device for an internal combustion engine, comprising: basic fuel injection amount correction means for correcting the set amount of basic fuel injection amount corresponding to the area in the basic fuel injection amount setting means based on the error; Control fuel injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3027788U JPH077563Y2 (en) | 1988-03-09 | 1988-03-09 | Electronically controlled fuel injection device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3027788U JPH077563Y2 (en) | 1988-03-09 | 1988-03-09 | Electronically controlled fuel injection device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01134748U true JPH01134748U (en) | 1989-09-14 |
| JPH077563Y2 JPH077563Y2 (en) | 1995-02-22 |
Family
ID=31255204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3027788U Expired - Lifetime JPH077563Y2 (en) | 1988-03-09 | 1988-03-09 | Electronically controlled fuel injection device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077563Y2 (en) |
-
1988
- 1988-03-09 JP JP3027788U patent/JPH077563Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH077563Y2 (en) | 1995-02-22 |
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