JPS57200668A - Contactless igniting apparatus for engine - Google Patents

Contactless igniting apparatus for engine

Info

Publication number
JPS57200668A
JPS57200668A JP8484381A JP8484381A JPS57200668A JP S57200668 A JPS57200668 A JP S57200668A JP 8484381 A JP8484381 A JP 8484381A JP 8484381 A JP8484381 A JP 8484381A JP S57200668 A JPS57200668 A JP S57200668A
Authority
JP
Japan
Prior art keywords
resistor
thyristor
voltage
generator
voltage dividing
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.)
Granted
Application number
JP8484381A
Other languages
Japanese (ja)
Other versions
JPS6137460B2 (en
Inventor
Moriyoshi Sotozaki
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.)
Sawafuji Electric Co Ltd
Original Assignee
Sawafuji Electric Co Ltd
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 Sawafuji Electric Co Ltd filed Critical Sawafuji Electric Co Ltd
Priority to JP8484381A priority Critical patent/JPS57200668A/en
Publication of JPS57200668A publication Critical patent/JPS57200668A/en
Publication of JPS6137460B2 publication Critical patent/JPS6137460B2/ja
Granted 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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • F02P9/005—Control of spark intensity, intensifying, lengthening, suppression by weakening or suppression of sparks to limit the engine speed

Landscapes

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

Abstract

PURPOSE:To prevent the engine speed from being raised to an overspeed range, by connecting a constant-voltage, time-constant circuit constituted by a parallel circuit of an auxiliary capacitor, a resistor and diodes between the gate and the cathode of an auxiliary thyristor in a voltage dividing circuit connected to the output terminal of a magneto generator. CONSTITUTION:A negative voltage dividing circuit 19 having a voltage dividing resistor 20 and an auxiliary thyristor 21 connected in series to each other is connected to the output terminal of a magneto generator 1, and a constant-voltage, time constant circuit 22 including an auxiliary capacitor 26, a resistor 27 and a plurality of diodes 23, 24, 25 connected in parallel to each other, which is adapted for energizing the thyristor 21 in response to a positive voltage V1 of the generator 1 and keeping the thyristor 21 in its energized state continuously for a predetermined while, is connected between the gate and the cathode of the thyristor 21. With such an arrangement, when the engine speed exceeds of reference value up to an overspeed region, the reference value of the engine speed can be determined by the resistor 27. Further, by varying the voltage dividing resistor 20, the range Q2-Q1 of ignition timing delaying angle is determined. Further, by approaching the value of resistor 20 to zero, a negative voltage V2 of the generator 1 is short-circuited, so that the engine is disabled to ignite.
JP8484381A 1981-06-02 1981-06-02 Contactless igniting apparatus for engine Granted JPS57200668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8484381A JPS57200668A (en) 1981-06-02 1981-06-02 Contactless igniting apparatus for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8484381A JPS57200668A (en) 1981-06-02 1981-06-02 Contactless igniting apparatus for engine

Publications (2)

Publication Number Publication Date
JPS57200668A true JPS57200668A (en) 1982-12-08
JPS6137460B2 JPS6137460B2 (en) 1986-08-23

Family

ID=13842072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8484381A Granted JPS57200668A (en) 1981-06-02 1981-06-02 Contactless igniting apparatus for engine

Country Status (1)

Country Link
JP (1) JPS57200668A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0525963Y2 (en) * 1987-02-24 1993-06-30

Also Published As

Publication number Publication date
JPS6137460B2 (en) 1986-08-23

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