JPH0191053U - - Google Patents
Info
- Publication number
- JPH0191053U JPH0191053U JP18542887U JP18542887U JPH0191053U JP H0191053 U JPH0191053 U JP H0191053U JP 18542887 U JP18542887 U JP 18542887U JP 18542887 U JP18542887 U JP 18542887U JP H0191053 U JPH0191053 U JP H0191053U
- Authority
- JP
- Japan
- Prior art keywords
- correction value
- fuel injection
- setting
- acceleration
- injection amount
- 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 17
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 230000001133 acceleration Effects 0.000 claims 9
- 238000001514 detection method Methods 0.000 claims 6
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 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
おける積分定数の増大判定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フイード
バツク補正係数の比例・積分制御ルーチンを示す
フローチヤート、第６図は従来の問題点を説明す
るためのタイムチヤートである。
１……機関、６………燃料噴射弁、１４……コ
ントロールユニツト、１５……スロツトルセンサ
、１６……アイドルスイツチ、１７……クランク
角センサ、１８……水温センサ、２０……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 flow chart showing a fuel injection amount calculation routine in the above embodiment, and Fig. 4 is a flow chart showing a routine for determining an increase in the constant of integration in the above embodiment. FIG. 5 is a flowchart showing a proportional/integral control routine for feedback correction coefficients in the same embodiment as described above, and FIG. 6 is a time chart for explaining the conventional problems. 1... Engine, 6... Fuel injection valve, 14... Control unit, 15... Throttle sensor, 16... Idle switch, 17... Crank angle sensor, 18... Water temperature sensor, 20... O2 sensor.
Claims (1)
を少なくとも含む機関運転状態を検出する機関運
転状態検出手段と、 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、 前記機関運転状態検出手段により検出された前
記機関運転状態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、 前記空燃比検出手段により検出された実際の空
燃比と目標空燃比とを比較して実際の空燃比を前
記目標空燃比に近づけるように前記基本燃料噴射
量を補正するフイードバツク補正値を積分制御に
より設定するフイードバツク補正値設定手段と、 機関の加速状態を検出する加速状態検出手段と
、 該加速状態検出手段により機関の加速状態が検
出されてから所定期間前記基本燃料噴射量を増量
補正する加速時増量補正値を設定する加速時増量
補正値設定手段と、 該加速時増量補正値設定手段による加速時増量
補正値の設定終了時から所定期間前記フイードバ
ツク補正値設定手段によるフイードバツク補正値
の積分制御の定数を増大させる積分定数増大手段
と、 前記基本燃料噴射量を前記フイードバツク補正
値及び加速時増量補正値に基づいて補正して燃料
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により設定された燃料噴
射量に対応する駆動パルス信号を燃料噴射手段に
出力する駆動パルス信号出力手段と、 を含んで構成されることを特徴とする電子制御
燃料噴射式内燃機関の空燃比フイードバツク制御
装置。[Scope of Claim for Utility Model Registration] Engine operating state detection means for detecting engine operating states including at least parameters related to the amount of air taken into the engine; air-fuel ratio detection means for detecting the engine operating state detected by the engine operating state detection means; basic fuel injection amount setting means for setting a basic fuel injection amount based on the engine operating state detected by the engine operating state detection means; Feedback correction value setting means for comparing an actual air-fuel ratio and a target air-fuel ratio and setting a feedback correction value for correcting the basic fuel injection amount so as to bring the actual air-fuel ratio closer to the target air-fuel ratio using integral control; an acceleration state detection means for detecting an acceleration state of the engine; and an acceleration state increase correction value for setting an acceleration increase correction value for increasing the basic fuel injection amount for a predetermined period after the acceleration state of the engine is detected by the acceleration state detection means. a correction value setting means; and an integral constant increasing means for increasing a constant for integral control of the feedback correction value by the feedback correction value setting means for a predetermined period from the end of setting the increase correction value during acceleration by the acceleration increase correction value setting means. , fuel injection amount setting means for setting a fuel injection amount by correcting the basic fuel injection amount based on the feedback correction value and the acceleration increase correction value; An air-fuel ratio feedback control device for an electronically controlled fuel injection type internal combustion engine, comprising: drive pulse signal output means for outputting a corresponding drive pulse signal to the fuel injection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542887U JPH0191053U (en) | 1987-12-07 | 1987-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542887U JPH0191053U (en) | 1987-12-07 | 1987-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0191053U true JPH0191053U (en) | 1989-06-15 |
Family
ID=31476746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18542887U Pending JPH0191053U (en) | 1987-12-07 | 1987-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0191053U (en) |
-
1987
- 1987-12-07 JP JP18542887U patent/JPH0191053U/ja active Pending