JPH0256834U - - Google Patents
Info
- Publication number
- JPH0256834U JPH0256834U JP13570688U JP13570688U JPH0256834U JP H0256834 U JPH0256834 U JP H0256834U JP 13570688 U JP13570688 U JP 13570688U JP 13570688 U JP13570688 U JP 13570688U JP H0256834 U JPH0256834 U JP H0256834U
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- engine
- detection means
- engine rotation
- feedback
- 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
- 238000001514 detection method Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は、本願考案のクレーム対応図、第２図
は、本考案の実施例に係るエンジンのアイドル回
転数制御装置の全体構成を示すシステム系統図、
第３図は、同実施例装置のエンジンコントロール
ユニツトのアイドル回転数制御動作を示すフロー
チヤート、第４図は、同第３図の制御動作におけ
る本考案の特徴をタイムチヤート的に表わしたグ
ラフ、第５図は、従来例の問題点を説明するため
の上記第４図と同様のグラフである。
１……エンジン本体、２……エアフロメータ、
３……スロツトルチヤンバ、４……スロツトル開
度センサ、５……フユーエルインジエクタ、６…
…スロツトル弁、７……バイパス吸気通路、８…
…吸気バイパス量調整用電磁弁、９……エンジン
コントロールユニツト。
FIG. 1 is a diagram corresponding to claims of the present invention, and FIG. 2 is a system diagram showing the overall configuration of an engine idle speed control device according to an embodiment of the present invention.
FIG. 3 is a flowchart showing the idle speed control operation of the engine control unit of the same embodiment, and FIG. 4 is a graph showing the features of the present invention in the control operation of FIG. 3 in the form of a time chart. FIG. 5 is a graph similar to FIG. 4 described above for explaining the problems of the conventional example. 1...Engine body, 2...Air flow meter,
3... Throttle chamber, 4... Throttle opening sensor, 5... Fuel injector, 6...
...Throttle valve, 7...Bypass intake passage, 8...
...Solenoid valve for adjusting intake bypass amount, 9...Engine control unit.
Claims (1)
ン回転数検出手段と、該エンジン回転数検出手段
によつて検出された実際のエンジン回転数と予め
設定された所定のアイドル目標回転数との偏差に
応じて当該エンジンの吸入空気量をフイードバツ
ク補正することにより上記エンジンの実回転数を
上記アイドル目標回転数に収束させるフイードバ
ツク制御手段とを備えてなるエンジンにおいて、
当該エンジンの減速状態を検出する減速状態検出
手段と、該減速状態検出手段によつて減速中であ
ることが検出された場合において上記エンジン回
転数検出手段によつて検出された実際のエンジン
回転数が上記アイドル目標回転数よりも所定値高
い所定の設定回転数になつた時には上記フイード
バツク制御手段のフイードバツク値をリセツトす
るフイードバツク値リセツト手段とを設けたこと
を特徴とするエンジンのアイドル回転数制御装置
。 an engine rotation speed detection means for detecting the engine rotation speed at idle; and a deviation between the actual engine rotation speed detected by the engine rotation speed detection means and a predetermined idle target rotation speed. An engine comprising: feedback control means for converging the actual rotational speed of the engine to the idle target rotational speed by feedback-correcting the intake air amount of the engine,
a deceleration state detection means for detecting a deceleration state of the engine; and an actual engine rotation speed detected by the engine rotation speed detection means when deceleration is detected by the deceleration state detection means; and feedback value reset means for resetting the feedback value of the feedback control means when the engine speed reaches a predetermined set rotation speed that is higher than the idle target rotation speed by a predetermined value. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13570688U JPH0256834U (en) | 1988-10-17 | 1988-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13570688U JPH0256834U (en) | 1988-10-17 | 1988-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0256834U true JPH0256834U (en) | 1990-04-24 |
Family
ID=31395575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13570688U Pending JPH0256834U (en) | 1988-10-17 | 1988-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0256834U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186041A (en) * | 1981-05-13 | 1982-11-16 | Hitachi Ltd | Control method of idle speed in engine |
-
1988
- 1988-10-17 JP JP13570688U patent/JPH0256834U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186041A (en) * | 1981-05-13 | 1982-11-16 | Hitachi Ltd | Control method of idle speed in engine |
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