JPS63125173U - - Google Patents
Info
- Publication number
- JPS63125173U JPS63125173U JP1725187U JP1725187U JPS63125173U JP S63125173 U JPS63125173 U JP S63125173U JP 1725187 U JP1725187 U JP 1725187U JP 1725187 U JP1725187 U JP 1725187U JP S63125173 U JPS63125173 U JP S63125173U
- Authority
- JP
- Japan
- Prior art keywords
- timing
- valve
- fuel injection
- current value
- injection 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
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は同上実施例の各部の信号状態を示すタイムチ
ヤート、第３図は従来例の回路図である。
１……燃料噴射弁、２……パワートランジスタ
、５……電流検出用抵抗、６……ピークホールド
回路、７……判定回路、８……タイムベースユニ
ツト。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a time chart showing the signal states of each part of the same embodiment, and FIG. 3 is a circuit diagram of the conventional example. DESCRIPTION OF SYMBOLS 1... Fuel injection valve, 2... Power transistor, 5... Current detection resistor, 6... Peak hold circuit, 7... Judgment circuit, 8... Time base unit.
Claims (1)
電電流値を検出する電流値検出手段と、該電流値
検出手段により検出された通電電流値が燃料噴射
弁の開弁着座時の振動によつて振動を発生する時
期を開弁着座時期として検出する開弁着座時期検
出手段と、該開弁着座時期検出手段によつて検出
された開弁着座時期を基準時期と比較し、基準時
期より早期であるときに燃料噴射弁が異常である
と判定する異常判定手段とを設けて構成したこと
を特徴とする電磁式燃料噴射弁の異常検出装置。 A current value detection means detects a current value when the electromagnetically driven fuel injection valve is driven, and the current value detected by the current value detection means vibrates due to vibration when the fuel injection valve is opened and seated. A valve-open seating timing detecting means detects the timing at which the valve-opening seating timing occurs, and the valve-opening seating timing detected by the valve-opening seating timing detecting means is compared with a reference timing, and the opening timing is determined to be earlier than the reference timing. What is claimed is: 1. An abnormality detection device for an electromagnetic fuel injection valve, comprising: an abnormality determination means for determining that the fuel injection valve is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1725187U JPS63125173U (en) | 1987-02-10 | 1987-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1725187U JPS63125173U (en) | 1987-02-10 | 1987-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63125173U true JPS63125173U (en) | 1988-08-16 |
Family
ID=30809837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1725187U Pending JPS63125173U (en) | 1987-02-10 | 1987-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63125173U (en) |
-
1987
- 1987-02-10 JP JP1725187U patent/JPS63125173U/ja active Pending
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