JPS5761930A - Detector for accidental fire of spark ignition engine - Google Patents
Detector for accidental fire of spark ignition engineInfo
- 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
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.
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)
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 |
-
1980
- 1980-10-01 JP JP13796580A patent/JPS5761930A/en active Pending
Cited By (5)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56121869A (en) | Plasma ignition system | |
JPS5761930A (en) | Detector for accidental fire of spark ignition engine | |
JPS55164428A (en) | System for electric discharge machining | |
CA1153421A (en) | Relaxation oscillator type spark generator | |
SE8103825L (en) | PROPERTY FLAMMATIC MONITORING DEVICE | |
JPS5732070A (en) | Ignition diagnosing equipment for internal combustion engine | |
FI80804C (en) | Device for detecting the level of ionization in a gas medium | |
JPS5481529A (en) | Ignition and flame detector | |
JPS52106447A (en) | Solid state power relay | |
JPS5614177A (en) | Analog electric timepiece | |
JPS5654124A (en) | Contact read-in circuit | |
JPS54109266A (en) | Lighting equipment | |
JPS56168534A (en) | Discharge type light emitting device | |
JPS5688962A (en) | Ignition apparatus for internal combustion engine | |
JPS5529046A (en) | Ignition system diagnosing system | |
JPS56132813A (en) | Reset device of integrated circuit | |
JPS57119166A (en) | Ignition device of engine | |
JPS52100143A (en) | Insufficient voltage detector | |
JPS56167851A (en) | Ignition apparatus for engine | |
JPS5449197A (en) | Ion type smoke sensor | |
JPS5654530A (en) | Voltage abnormality detector | |
JPS5484227A (en) | Trouble detecting device of transformer | |
JPS55109970A (en) | Detector for fault point of cable sheath | |
JPS5779262A (en) | Knocking detector | |
JPS5469630A (en) | Enging running stopping equipment due to lubricating oil shortage |