JPS5761930A - Detector for accidental fire of spark ignition engine - Google Patents

Detector for accidental fire of spark ignition engine

Info

Publication number
JPS5761930A
JPS5761930A JP13796580A JP13796580A JPS5761930A JP S5761930 A JPS5761930 A JP S5761930A JP 13796580 A JP13796580 A JP 13796580A JP 13796580 A JP13796580 A JP 13796580A JP S5761930 A JPS5761930 A JP S5761930A
Authority
JP
Japan
Prior art keywords
ion current
circuit
switch
generation
time
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
JP13796580A
Other languages
Japanese (ja)
Inventor
Shigeru Miyata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Tokushu Togyo KK
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nippon Tokushu Togyo KK
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 by NGK Spark Plug Co Ltd, Nippon Tokushu Togyo KK filed Critical NGK Spark Plug Co Ltd
Priority to JP13796580A priority Critical patent/JPS5761930A/en
Publication of JPS5761930A publication Critical patent/JPS5761930A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • F02P2017/125—Measuring ionisation of combustion gas, e.g. by using ignition circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Engines (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PURPOSE:To assuredly eliminate the effect of spark ignition, etc. and to ensure the accurate discrimination for the generation of an ion current, by providing a switch to an i0n current detecting circuit and then closing the switch so as to cover the period of generation of the ion current. CONSTITUTION:A circuit I always applied the DC voltage of -300V to an ignition plug P under the operation of an engine; and an ion current detecting circuit II puts a capacitor C2 plus switches S and R2 in series between the middle point B of a resistance 1 and a diode D3, and gives the earth between the C2 and S via a D4. The switch S closes the circuit for a prescribed period of time through an accidental fire discriminating circuit III and by means of the plug P in the lapse of a certain time set at the end of the spark discharge. The closing time of S is set to that it assuredly covers the time of generation of the ion current due to ignition.
JP13796580A 1980-10-01 1980-10-01 Detector for accidental fire of spark ignition engine Pending JPS5761930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13796580A JPS5761930A (en) 1980-10-01 1980-10-01 Detector for accidental fire of spark ignition engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13796580A JPS5761930A (en) 1980-10-01 1980-10-01 Detector for accidental fire of spark ignition engine

Publications (1)

Publication Number Publication Date
JPS5761930A true JPS5761930A (en) 1982-04-14

Family

ID=15210864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13796580A Pending JPS5761930A (en) 1980-10-01 1980-10-01 Detector for accidental fire of spark ignition engine

Country Status (1)

Country Link
JP (1) JPS5761930A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02104978A (en) * 1988-10-13 1990-04-17 Mitsubishi Electric Corp Misfire detector for internal combustion engine
JPH02301673A (en) * 1989-05-15 1990-12-13 Mitsubishi Electric Corp Spark plug electric current detecting device for internal combustion engine
EP0967390A3 (en) * 1998-05-27 2002-05-15 Ngk Spark Plug Co., Ltd. Sensor for detecting ignition current and ion current in ignition secondary circuit
EP0933526A3 (en) * 1998-01-28 2002-07-03 Ngk Spark Plug Co., Ltd. Ion current detection apparatus
EP1316723A3 (en) * 2001-11-29 2006-03-08 Ngk Spark Plug Co., Ltd Ignition device for internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02104978A (en) * 1988-10-13 1990-04-17 Mitsubishi Electric Corp Misfire detector for internal combustion engine
JPH02301673A (en) * 1989-05-15 1990-12-13 Mitsubishi Electric Corp Spark plug electric current detecting device for internal combustion engine
EP0933526A3 (en) * 1998-01-28 2002-07-03 Ngk Spark Plug Co., Ltd. Ion current detection apparatus
EP0967390A3 (en) * 1998-05-27 2002-05-15 Ngk Spark Plug Co., Ltd. Sensor for detecting ignition current and ion current in ignition secondary circuit
EP1316723A3 (en) * 2001-11-29 2006-03-08 Ngk Spark Plug Co., Ltd Ignition device for internal combustion engine

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