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
Application number
JP7553789U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP7553789U priority Critical patent/JPH0317173U/ja
Publication of JPH0317173U publication Critical patent/JPH0317173U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電磁式の燃料噴射弁に流れる駆動電流の微分波
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.
JP7553789U 1989-06-29 1989-06-29 Pending JPH0317173U (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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