JPH01159154U - - Google Patents
Info
- Publication number
- JPH01159154U JPH01159154U JP5154688U JP5154688U JPH01159154U JP H01159154 U JPH01159154 U JP H01159154U JP 5154688 U JP5154688 U JP 5154688U JP 5154688 U JP5154688 U JP 5154688U JP H01159154 U JPH01159154 U JP H01159154U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection valve
- abnormality determination
- abnormality
- valve
- 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
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004092 self-diagnosis Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 5
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案に係わる燃料噴射弁の自己診断
装置のクレーム対応図、第２図は同上装置の一実
施例を示すブロツク図、第３図は同上実施例にお
ける燃料噴射動作検出手段の具体的な取付例を示
す概略図、第４図は同上実施例の作用を説明する
フローチヤート、第５図ａ，ｂは夫々パルス信号
及びホトトランジスタ信号を示すシグナル図、第
６図〜第８図は夫々燃料噴射動作検出手段の他の
実施例を示す概略図、第９図ａ〜ｃは夫々同上の
他の実施例における燃料噴射動作に基づいて出力
される信号のシグナル図である。
１……コントロールユニツト、６……燃料噴射
弁、８……ＬＥＤ、９……ホトトランジスタ、２
０……圧力センサ、２２……燃料噴射弁、２３…
…圧力ピツクアツプ、２６……燃料噴射弁、２９
……圧電素子。
Fig. 1 is a diagram corresponding to claims of the fuel injection valve self-diagnosis device according to the present invention, Fig. 2 is a block diagram showing an embodiment of the same device, and Fig. 3 is a specific example of the fuel injection operation detection means in the above embodiment. FIG. 4 is a flowchart explaining the operation of the above embodiment; FIGS. 5a and 5b are signal diagrams showing pulse signals and phototransistor signals, respectively; FIGS. 6 to 8 9 are schematic diagrams showing other embodiments of the fuel injection operation detection means, and FIGS. 9a to 9c are signal diagrams of signals output based on the fuel injection operation in the other embodiments, respectively. 1...Control unit, 6...Fuel injection valve, 8...LED, 9...Phototransistor, 2
0...Pressure sensor, 22...Fuel injection valve, 23...
...Pressure pickup, 26...Fuel injection valve, 29
……Piezoelectric element.
Claims (1)
により検出される燃料噴射動作と燃料噴射弁の噴
射期間に相当する噴射パルス信号とを対比させて
燃料噴射弁の異常を判定する異常判定手段と、該
異常判定手段によつて燃料噴射弁の異常が判定さ
れた時に異常判定信号を出力する異常判定信号出
力手段と、を備えてなる燃料噴射弁の自己診断装
置。 A fuel injection operation detection means for the fuel injection valve; and an abnormality determination means for determining an abnormality of the fuel injection valve by comparing the fuel injection operation detected by the means with an injection pulse signal corresponding to an injection period of the fuel injection valve. A self-diagnosis device for a fuel injection valve, comprising: abnormality determination signal output means for outputting an abnormality determination signal when the abnormality determination means determines that the fuel injection valve is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5154688U JPH01159154U (en) | 1988-04-19 | 1988-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5154688U JPH01159154U (en) | 1988-04-19 | 1988-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159154U true JPH01159154U (en) | 1989-11-02 |
Family
ID=31277568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5154688U Pending JPH01159154U (en) | 1988-04-19 | 1988-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013002318A (en) * | 2011-06-14 | 2013-01-07 | Denso Corp | Fuel supply control device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118526A (en) * | 1980-02-22 | 1981-09-17 | Hitachi Ltd | Electronically controlled fuel supply apparatus |
| JPS5932631A (en) * | 1982-08-17 | 1984-02-22 | Honda Motor Co Ltd | Fuel pump controlling apparatus for internal combustion engine |
-
1988
- 1988-04-19 JP JP5154688U patent/JPH01159154U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118526A (en) * | 1980-02-22 | 1981-09-17 | Hitachi Ltd | Electronically controlled fuel supply apparatus |
| JPS5932631A (en) * | 1982-08-17 | 1984-02-22 | Honda Motor Co Ltd | Fuel pump controlling apparatus for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013002318A (en) * | 2011-06-14 | 2013-01-07 | Denso Corp | Fuel supply control device |
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