JPS5620760A - Controlling method of ignition coil energization duration - Google Patents

Controlling method of ignition coil energization duration

Info

Publication number
JPS5620760A
JPS5620760A JP9849379A JP9849379A JPS5620760A JP S5620760 A JPS5620760 A JP S5620760A JP 9849379 A JP9849379 A JP 9849379A JP 9849379 A JP9849379 A JP 9849379A JP S5620760 A JPS5620760 A JP S5620760A
Authority
JP
Japan
Prior art keywords
constant
current
ignition coil
signal
transistor
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
JP9849379A
Other languages
Japanese (ja)
Inventor
Takahide Kawamura
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP9849379A priority Critical patent/JPS5620760A/en
Publication of JPS5620760A publication Critical patent/JPS5620760A/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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices

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)

Abstract

PURPOSE:To make the constant-current duration of an ignition coil constant over a wide range of running of an engine by determining the on timing of the ignition coil such that a predetermined count is obtained by counting of clock pulses during a period of time in which the constant-current condition is held detected. CONSTITUTION:A control unit 4 provides a rectangular wave X for determining an ignition timing in accordance with a rotational frequency representing signal N and a suction air amount representing signal Q. A constant-current control circuit 5 turns a transistor Tr2 conducting by a leading edge of the signal X and controls the current through the transistor Tr2 such that the current flowing through the primary winding of the ignition coil is kept constant. The transistor Tr2 is brought out of conducting by a trailing edge of the signal X so as to cause high voltage to be produced in the secondary winding of the ignition coil 1. A constant-current condition detecting circuit 7 generates rectangular wave signals Z while the current Y flowing through the primary winding is held constant. A counter 6 counts clock pulses C while a signal Z is held high. The control unit 4 determines the energization duration for a sebsequent next ignition cycle in accordance with the output of the counter 6.
JP9849379A 1979-07-31 1979-07-31 Controlling method of ignition coil energization duration Pending JPS5620760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9849379A JPS5620760A (en) 1979-07-31 1979-07-31 Controlling method of ignition coil energization duration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9849379A JPS5620760A (en) 1979-07-31 1979-07-31 Controlling method of ignition coil energization duration

Publications (1)

Publication Number Publication Date
JPS5620760A true JPS5620760A (en) 1981-02-26

Family

ID=14221166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9849379A Pending JPS5620760A (en) 1979-07-31 1979-07-31 Controlling method of ignition coil energization duration

Country Status (1)

Country Link
JP (1) JPS5620760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020094563A (en) * 2018-12-14 2020-06-18 ダイヤモンド電機株式会社 Driving device for ignition coil, and ignition system including the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340141A (en) * 1976-09-24 1978-04-12 Mitsubishi Electric Corp Ignition control device
JPS5390532A (en) * 1977-01-19 1978-08-09 Bosch Gmbh Robert Ignition unit for internal combustion engine
JPS53127941A (en) * 1977-04-15 1978-11-08 Mitsubishi Electric Corp Ignition system of internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340141A (en) * 1976-09-24 1978-04-12 Mitsubishi Electric Corp Ignition control device
JPS5390532A (en) * 1977-01-19 1978-08-09 Bosch Gmbh Robert Ignition unit for internal combustion engine
JPS53127941A (en) * 1977-04-15 1978-11-08 Mitsubishi Electric Corp Ignition system of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020094563A (en) * 2018-12-14 2020-06-18 ダイヤモンド電機株式会社 Driving device for ignition coil, and ignition system including the same

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