JPH01149544U - - Google Patents
Info
- Publication number
- JPH01149544U JPH01149544U JP4565088U JP4565088U JPH01149544U JP H01149544 U JPH01149544 U JP H01149544U JP 4565088 U JP4565088 U JP 4565088U JP 4565088 U JP4565088 U JP 4565088U JP H01149544 U JPH01149544 U JP H01149544U
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- detection means
- flow rate
- fuel injection
- abnormality
- 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 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims 9
- 230000005856 abnormality Effects 0.000 claims 7
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 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燃料噴射制御を示すフ
ローチヤート、第４図は同上実施例における補助
空気量制御弁の開度制御を示すフローチヤートで
ある。
１……機関、２……吸気通路、３……エアフロ
ーメータ、４……スロツトル弁、５……スロツト
ルセンサ、６……水温センサ、７……回転速度セ
ンサ、８……コントロールユニツト、９……燃料
噴射弁、１０……補助空気通路、１１……アイド
ル制御弁。
Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a block diagram showing the configuration of the present invention.
The figure is a system schematic diagram showing an embodiment of the present invention, Figure 3 is a flowchart showing fuel injection control in the above embodiment, and Figure 4 is a flow chart showing opening control of the auxiliary air amount control valve in the above embodiment. It's a chat. DESCRIPTION OF SYMBOLS 1... Engine, 2... Intake passage, 3... Air flow meter, 4... Throttle valve, 5... Throttle sensor, 6... Water temperature sensor, 7... Rotational speed sensor, 8... Control unit, 9 ... Fuel injection valve, 10 ... Auxiliary air passage, 11 ... Idle control valve.
Claims (1)
スする補助空気通路に機関運転状態に応じた開度
に駆動制御される補助空気量制御弁を備える一方
、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、検出された吸入空気流量に基づいて燃
料噴射手段による燃料噴射量を制御する燃料噴射
制御手段と、含んで構成された電子制御燃料噴射
式内燃機関において、 前記吸入空気流量検出手段の異常を検出する異
常検出手段と、前記スロツトル弁の開度を検出す
るスロツトル弁開度検出手段と、機関回転速度を
検出する機関回転速度検出手段と、前記異常検出
手段により前記吸入空気流量検出手段の異常が検
出されたときにスロツトル弁開度と機関回転速度
とに基づいて吸入空気流量を予測し、前記燃料噴
射制御手段に優先してこの予測した吸入空気流量
に基づいて前記燃料噴射手段による燃料噴射量を
制御する異常時燃料噴射制御手段と、機関温度を
検出する機関温度検出手段と、前記異常検出手段
により前記吸入空気流量検出手段の異常が検出さ
れたときに前記機関温度検出手段で検出される機
関温度に応じた所定フエイルセーフ開度に前記補
助空気量制御弁の開度を強制的に駆動制御する異
常時開度制御手段と、を備えてなる電子制御燃料
噴射式内燃機関のフエイルセーフ装置。[Claims for Utility Model Registration] An auxiliary air flow passage that bypasses a throttle valve installed in the engine intake system is equipped with an auxiliary air flow control valve that is controlled to open according to the engine operating condition. An electronically controlled fuel injection type internal combustion engine comprising: an intake air flow rate detection means for detecting an air flow rate; and a fuel injection control means for controlling a fuel injection amount by a fuel injection means based on the detected intake air flow rate. , an abnormality detection means for detecting an abnormality in the intake air flow rate detection means; a throttle valve opening degree detection means for detecting the opening degree of the throttle valve; an engine rotation speed detection means for detecting an engine rotation speed; When an abnormality in the intake air flow rate detecting means is detected by the means, the intake air flow rate is predicted based on the throttle valve opening degree and the engine rotational speed, and the predicted intake air flow rate is determined with priority over the fuel injection control means. abnormality fuel injection control means for controlling the amount of fuel injected by the fuel injection means based on; engine temperature detection means for detecting engine temperature; and abnormality in the intake air flow rate detection means detected by the abnormality detection means. abnormality opening control means for forcibly driving and controlling the opening of the auxiliary air amount control valve to a predetermined fail-safe opening according to the engine temperature detected by the engine temperature detection means; Fail-safe device for controlled fuel-injected internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4565088U JPH01149544U (en) | 1988-04-06 | 1988-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4565088U JPH01149544U (en) | 1988-04-06 | 1988-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01149544U true JPH01149544U (en) | 1989-10-17 |
Family
ID=31271951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4565088U Pending JPH01149544U (en) | 1988-04-06 | 1988-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01149544U (en) |
-
1988
- 1988-04-06 JP JP4565088U patent/JPH01149544U/ja active Pending