JPH036037U - - Google Patents
Info
- Publication number
- JPH036037U JPH036037U JP6672789U JP6672789U JPH036037U JP H036037 U JPH036037 U JP H036037U JP 6672789 U JP6672789 U JP 6672789U JP 6672789 U JP6672789 U JP 6672789U JP H036037 U JPH036037 U JP H036037U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- fuel injection
- specific
- injection valve
- correction 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案に係る燃料噴射弁診断装置の構
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〜第５図は燃料噴
射制御のフローチヤート、第６図は燃料噴射弁診
断のフローチヤートである。
１……機関、２……吸気通路、３……コントロ
ールユニツト、４……エアフローメータ、５……
クランク角センサ、６Ａ，６Ｂ……排気通路、８
Ａ，８Ｂ……Ｏ２センサ、１１〜１４……燃料噴
射弁。
Fig. 1 is a functional block diagram showing the configuration of a fuel injection valve diagnosis device according to the present invention, Fig. 2 is a system diagram showing an embodiment of the present invention, and Figs. 3 to 5 are flowcharts of fuel injection control. , FIG. 6 is a flowchart of fuel injection valve diagnosis. 1... Engine, 2... Intake passage, 3... Control unit, 4... Air flow meter, 5...
Crank angle sensor, 6A, 6B...exhaust passage, 8
A, 8B... O2 sensor, 11-14...Fuel injection valve.
Claims (1)
内燃機関であつて、 吸入空気の状態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、気筒ごとに
基本燃料噴射量を気筒別補正量で補正して燃料噴
射量を設定する気筒別燃料噴射量設定手段と、気
筒ごとにそれぞれ設定された燃料噴射量で燃料噴
射弁を作動させる気筒別燃料噴射制御手段と、気
筒ごとに空燃比を検出する気筒別空燃比検出手段
と、気筒ごとにそれぞれ検出された空燃比に応じ
て前記気筒別補正量を増減設定する気筒別補正量
設定手段と、を備えるものにおいて、 各気筒の気筒別補正量を他の気筒の気筒別補正
量と比較して、これらの差が大きいときに燃料噴
射弁つまりと判定する燃料噴射弁つまり判定手段
を設けたことを特徴とする燃料噴射弁診断装置。[Scope of Claim for Utility Model Registration] An internal combustion engine equipped with a fuel injection valve for each cylinder in an engine intake passage, comprising a basic fuel injection amount setting means for setting a basic fuel injection amount based on a state quantity of intake air; cylinder-specific fuel injection amount setting means that sets the fuel injection amount by correcting the basic fuel injection amount with a cylinder-specific correction amount; and cylinder-specific fuel that operates the fuel injection valve with the fuel injection amount set for each cylinder. an injection control means, a cylinder-specific air-fuel ratio detection means for detecting an air-fuel ratio for each cylinder, and a cylinder-specific correction amount setting means for increasing or decreasing the cylinder-specific correction amount according to the air-fuel ratio detected for each cylinder; A fuel injection valve clogging determining means is provided which compares the cylinder-specific correction amount of each cylinder with the cylinder-specific correction amount of other cylinders and determines that the fuel injection valve is clogged when the difference between them is large. A fuel injection valve diagnostic device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6672789U JPH0645644Y2 (en) | 1989-06-09 | 1989-06-09 | Fuel injection valve diagnostic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6672789U JPH0645644Y2 (en) | 1989-06-09 | 1989-06-09 | Fuel injection valve diagnostic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH036037U true JPH036037U (en) | 1991-01-22 |
| JPH0645644Y2 JPH0645644Y2 (en) | 1994-11-24 |
Family
ID=31599680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6672789U Expired - Lifetime JPH0645644Y2 (en) | 1989-06-09 | 1989-06-09 | Fuel injection valve diagnostic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645644Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008144639A (en) * | 2006-12-08 | 2008-06-26 | Denso Corp | Control device for internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4831336B2 (en) * | 2006-09-11 | 2011-12-07 | 株式会社デンソー | Control device for internal combustion engine |
-
1989
- 1989-06-09 JP JP6672789U patent/JPH0645644Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008144639A (en) * | 2006-12-08 | 2008-06-26 | Denso Corp | Control device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645644Y2 (en) | 1994-11-24 |