JPH0317173U - - Google Patents
Info
- Publication number
- JPH0317173U JPH0317173U JP7553789U JP7553789U JPH0317173U JP H0317173 U JPH0317173 U JP H0317173U JP 7553789 U JP7553789 U JP 7553789U JP 7553789 U JP7553789 U JP 7553789U JP H0317173 U JPH0317173 U JP H0317173U
- Authority
- JP
- Japan
- Prior art keywords
- peak
- fuel injection
- injection valve
- differentiation circuit
- valve failure
- 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 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000004069 differentiation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
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
図はその信号波形図、第3図は判定ルーチンのフ
ローチヤート、第4図は従来例を示す回路図、第
5図はその信号波形図、第6図は判定ルーチンの
フローチヤートである。
1……燃料噴射弁、2……トランジスタ、3…
…電流検出用抵抗、4……アンプ、5……微分回
路、6……ダイオード。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
3 is a flowchart of the determination routine, FIG. 4 is a circuit diagram showing a conventional example, FIG. 5 is a signal waveform diagram thereof, and FIG. 6 is a flowchart of the determination routine. 1...Fuel injection valve, 2...Transistor, 3...
...Resistor for current detection, 4...Amplifier, 5...Differential circuit, 6...Diode.
Claims (1)
形を出力する微分回路と、この微分回路の出力よ
り所定レベル以上のピークを検出するピーク検出
回路とを備え、前記ピークが検出されないときに
燃料噴射弁の故障と判定することを特徴とする燃
料噴射弁故障判定装置。 It is equipped with a differentiation circuit that outputs a differential waveform of the driving current flowing through the electromagnetic fuel injection valve, and a peak detection circuit that detects a peak of a predetermined level or higher from the output of the differentiation circuit, and injects fuel when the peak is not detected. A fuel injection valve failure determination device characterized by determining a valve failure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7553789U JPH0317173U (en) | 1989-06-29 | 1989-06-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7553789U JPH0317173U (en) | 1989-06-29 | 1989-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0317173U true JPH0317173U (en) | 1991-02-20 |
Family
ID=31616198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7553789U Pending JPH0317173U (en) | 1989-06-29 | 1989-06-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0317173U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014092068A (en) * | 2012-11-02 | 2014-05-19 | Denso Corp | Evaporation fuel treatment apparatus |
JP2015135102A (en) * | 2013-10-29 | 2015-07-27 | コンチネンタル オートモーティブ システムズ インコーポレイテッドContinental Automotive Systems, Inc. | Direct injection solenoid injector opening time detection |
WO2016129402A1 (en) * | 2015-02-09 | 2016-08-18 | 日立オートモティブシステムズ株式会社 | Control device for fuel injection valve |
JP2018076871A (en) * | 2018-01-09 | 2018-05-17 | 株式会社デンソー | Control device of high-pressure pump |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5066612A (en) * | 1973-10-19 | 1975-06-05 | ||
JPH01105084A (en) * | 1987-10-13 | 1989-04-21 | Mazda Motor Corp | Trouble detecting device for solenoid valve |
-
1989
- 1989-06-29 JP JP7553789U patent/JPH0317173U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5066612A (en) * | 1973-10-19 | 1975-06-05 | ||
JPH01105084A (en) * | 1987-10-13 | 1989-04-21 | Mazda Motor Corp | Trouble detecting device for solenoid valve |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014092068A (en) * | 2012-11-02 | 2014-05-19 | Denso Corp | Evaporation fuel treatment apparatus |
JP2015135102A (en) * | 2013-10-29 | 2015-07-27 | コンチネンタル オートモーティブ システムズ インコーポレイテッドContinental Automotive Systems, Inc. | Direct injection solenoid injector opening time detection |
WO2016129402A1 (en) * | 2015-02-09 | 2016-08-18 | 日立オートモティブシステムズ株式会社 | Control device for fuel injection valve |
US10309336B2 (en) | 2015-02-09 | 2019-06-04 | Hitachi Automotive Systems, Ltd. | Control device for fuel injection valve |
JP2018076871A (en) * | 2018-01-09 | 2018-05-17 | 株式会社デンソー | Control device of high-pressure pump |
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