FR2437505A1 - IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter - Google Patents

IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter

Info

Publication number
FR2437505A1
FR2437505A1 FR7827918A FR7827918A FR2437505A1 FR 2437505 A1 FR2437505 A1 FR 2437505A1 FR 7827918 A FR7827918 A FR 7827918A FR 7827918 A FR7827918 A FR 7827918A FR 2437505 A1 FR2437505 A1 FR 2437505A1
Authority
FR
France
Prior art keywords
coil current
coil
ignition
circuit
voltage converter
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
FR7827918A
Other languages
French (fr)
Other versions
FR2437505B1 (en
Inventor
Christian Menard
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7827918A priority Critical patent/FR2437505A1/en
Publication of FR2437505A1 publication Critical patent/FR2437505A1/en
Application granted granted Critical
Publication of FR2437505B1 publication Critical patent/FR2437505B1/fr
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
    • 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

Ignition circuit for internal combustion engines, the circuit controlling the current flowing in the ignition coil in order to maximise firing efficiency. The control is based on maintaining a relatively constant charging time for the coil and its supply circuit, both the resistance and inductance of the coil primary being kept low. Two voltage stabilised supplies (Vcc, Vdd) are generated once the ignition switch (2) is closed and are connected to the mechanical contact breaker (4) via a resistor (Rc) and also a two output signal generator (10). One output is a function of firing frequency (20) and feeds a ramp generator (30), a comparator (40) and a two input bistable trigger circuit (60) which also receives one of the initial signal generator outputs (S1). This in turn triggers a coil current charging unit (6) directly charging the ignition coil (3).
FR7827918A 1978-09-29 1978-09-29 IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter Granted FR2437505A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7827918A FR2437505A1 (en) 1978-09-29 1978-09-29 IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7827918A FR2437505A1 (en) 1978-09-29 1978-09-29 IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter

Publications (2)

Publication Number Publication Date
FR2437505A1 true FR2437505A1 (en) 1980-04-25
FR2437505B1 FR2437505B1 (en) 1982-03-19

Family

ID=9213180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7827918A Granted FR2437505A1 (en) 1978-09-29 1978-09-29 IC engine ignition circuit with coil current control - maintains constant coil current and uses frequency voltage converter

Country Status (1)

Country Link
FR (1) FR2437505A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2253390A5 (en) * 1973-11-29 1975-06-27 Ducellier & Cie Engine ignition system - limits time of flow of coil current to reduce current consumption at low speed
DE2505649A1 (en) * 1974-02-12 1975-09-04 Hitachi Ltd IGNITION ARRANGEMENT FOR COMBUSTION MACHINERY
FR2273173A1 (en) * 1974-05-31 1975-12-26 Coissard Paul Ignition system for internal combustion engine - maintains constant duration of spark independently of engine speed
US3937193A (en) * 1973-11-19 1976-02-10 Ford Motor Company Electronic ignition system
US4041912A (en) * 1975-08-25 1977-08-16 Motorola, Inc. Solid-state ignition system and method for linearly regulating and dwell time thereof
FR2359989A1 (en) * 1976-07-28 1978-02-24 Ducellier & Cie INTERNAL COMBUSTION ENGINE ELECTRONIC IGNITION CONTROL DEVICE
FR2376953A1 (en) * 1977-01-08 1978-08-04 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR INTERNAL COMBUSTION ENGINES

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937193A (en) * 1973-11-19 1976-02-10 Ford Motor Company Electronic ignition system
FR2253390A5 (en) * 1973-11-29 1975-06-27 Ducellier & Cie Engine ignition system - limits time of flow of coil current to reduce current consumption at low speed
DE2505649A1 (en) * 1974-02-12 1975-09-04 Hitachi Ltd IGNITION ARRANGEMENT FOR COMBUSTION MACHINERY
FR2273173A1 (en) * 1974-05-31 1975-12-26 Coissard Paul Ignition system for internal combustion engine - maintains constant duration of spark independently of engine speed
US4041912A (en) * 1975-08-25 1977-08-16 Motorola, Inc. Solid-state ignition system and method for linearly regulating and dwell time thereof
FR2359989A1 (en) * 1976-07-28 1978-02-24 Ducellier & Cie INTERNAL COMBUSTION ENGINE ELECTRONIC IGNITION CONTROL DEVICE
FR2376953A1 (en) * 1977-01-08 1978-08-04 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
FR2437505B1 (en) 1982-03-19

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse