JPH01159153U - - Google Patents
Info
- Publication number
- JPH01159153U JPH01159153U JP5154888U JP5154888U JPH01159153U JP H01159153 U JPH01159153 U JP H01159153U JP 5154888 U JP5154888 U JP 5154888U JP 5154888 U JP5154888 U JP 5154888U JP H01159153 U JPH01159153 U JP H01159153U
- Authority
- JP
- Japan
- Prior art keywords
- duty
- change
- auxiliary air
- detecting
- idle speed
- 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
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007935 neutral effect 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図はアイドル回転数制御のフローチヤート、第
４図は異常検出及びフエイルセーフ制御のフロー
チヤート、第５図は他の実施例を示すフエイルセ
ーフ制御のフローチヤート、第６図は従来の問題
点を説明するためのデユーテイー空気流量特性図
である。
３……スロツトル弁、４……補助空気通路、５
……補助空気制御弁、７……燃料噴射弁、８……
機関本体、９……点火栓、１０……点火コイル、
１１……コントロールユニツト、１３……クラン
ク角センサ、１４……エアフローメータ、１５…
…水温センサ、１６……アイドルスイツチ、１７
……ニユートラルスイツチ、１８……車速センサ
。
Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is a system diagram showing one embodiment of the present invention, Fig. 3 is a flowchart of idle speed control, Fig. 4 is a flowchart of abnormality detection and fail-safe control, and Fig. 5 is another embodiment. FIG. 6, which is a flowchart of fail-safe control, is a duty air flow rate characteristic diagram for explaining the conventional problems. 3... Throttle valve, 4... Auxiliary air passage, 5
...Auxiliary air control valve, 7...Fuel injection valve, 8...
Engine body, 9... Spark plug, 10... Ignition coil,
11... Control unit, 13... Crank angle sensor, 14... Air flow meter, 15...
...Water temperature sensor, 16...Idle switch, 17
...neutral switch, 18...vehicle speed sensor.
Claims (1)
磁式の補助空気制御弁を備え、アイドル運転時に
この補助空気制御弁へのデユーテイを制御するこ
とにより補助空気量を制御してアイドル回転数を
目標値にフイードバツク制御する内燃機関のアイ
ドル回転数制御装置において、前記デユーテイの
変化方向を検出するデユーテイ変化方向検出手段
と、機関回転数の変化方向若しくは車速の変化方
向を検出する運転変化方向検出手段と、前記デユ
ーテイの補助空気量減少方向への変化時に機関回
転数若しくは車速が上昇したときにアイドル回転
数制御の異常を検出する異常検出手段とを設けた
ことを特徴とするアイドル回転数制御装置の異常
検出装置。 An electromagnetic auxiliary air control valve is installed in the auxiliary air passage that bypasses the throttle valve, and by controlling the duty to this auxiliary air control valve during idle operation, the amount of auxiliary air is controlled and the idle speed is feedback to the target value. In an idle speed control device for an internal combustion engine to be controlled, a duty change direction detecting means for detecting a direction of change in the duty, a driving change direction detecting means for detecting a direction of change in engine speed or a direction of change in vehicle speed, and a duty change direction detecting means for detecting a direction in which the duty changes. An abnormality detection device for an idle speed control device, characterized in that it is provided with an abnormality detection means for detecting an abnormality in idle speed control when the engine speed or vehicle speed increases when the amount of auxiliary air changes in the direction of decreasing. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5154888U JPH01159153U (en) | 1988-04-19 | 1988-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5154888U JPH01159153U (en) | 1988-04-19 | 1988-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159153U true JPH01159153U (en) | 1989-11-02 |
Family
ID=31277570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5154888U Pending JPH01159153U (en) | 1988-04-19 | 1988-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583343U (en) * | 1992-04-09 | 1993-11-12 | 日本電子機器株式会社 | Fuel supply stop device for vehicle engine |
-
1988
- 1988-04-19 JP JP5154888U patent/JPH01159153U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583343U (en) * | 1992-04-09 | 1993-11-12 | 日本電子機器株式会社 | Fuel supply stop device for vehicle engine |