FR2452808A1 - Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration - Google Patents

Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration

Info

Publication number
FR2452808A1
FR2452808A1 FR7908093A FR7908093A FR2452808A1 FR 2452808 A1 FR2452808 A1 FR 2452808A1 FR 7908093 A FR7908093 A FR 7908093A FR 7908093 A FR7908093 A FR 7908093A FR 2452808 A1 FR2452808 A1 FR 2452808A1
Authority
FR
France
Prior art keywords
numeric
circuits
rpm
circuit
engine
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
FR7908093A
Other languages
French (fr)
Other versions
FR2452808B1 (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 FR7908093A priority Critical patent/FR2452808A1/en
Publication of FR2452808A1 publication Critical patent/FR2452808A1/en
Application granted granted Critical
Publication of FR2452808B1 publication Critical patent/FR2452808B1/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
    • F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques

Abstract

The ignition circuit is for IC engines. The circuit is inductive and uses numeric techniques to control the duration of the magnetising current in the ignition coil primary winding. The numeric circuits (4) are controlled by a clock source, can be retarded and generate a square wave output which can have a fixed duration or have a duration which is a function of engine RPM. The advance and retard control circuit (3) is fed by an RPM transducer (1) associated with the flywheel and referenced to the cylinders dead points and a load transducer (3) in the inlet manifold. The clock source provides a signal (EN) whose frequency is a function of RPM, the numeric circuit output supplying a high voltage spark source (5) and a distributor.
FR7908093A 1979-03-30 1979-03-30 Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration Granted FR2452808A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7908093A FR2452808A1 (en) 1979-03-30 1979-03-30 Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7908093A FR2452808A1 (en) 1979-03-30 1979-03-30 Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration

Publications (2)

Publication Number Publication Date
FR2452808A1 true FR2452808A1 (en) 1980-10-24
FR2452808B1 FR2452808B1 (en) 1983-06-17

Family

ID=9223777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908093A Granted FR2452808A1 (en) 1979-03-30 1979-03-30 Engine inductive ignition circuit - uses numeric circuits, load and RPM sensors, to control coil current duration

Country Status (1)

Country Link
FR (1) FR2452808A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500074A1 (en) * 1981-02-18 1982-08-20 Ducellier & Cie Automatic spark duration controller for IC engine - has electronic processor acting on engine characteristic to switch thyristor across primary of ignition coil to stop spark

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939811A (en) * 1974-04-10 1976-02-24 Hitachi, Ltd. Ignition apparatus for internal combustion engine
FR2295251A1 (en) * 1974-12-19 1976-07-16 Texaco Development Corp CONTROL SYSTEM OF THE INITIAL INSTANT AND THE LENGTH OF TIME INTERVALS
FR2358564A1 (en) * 1976-07-15 1978-02-10 Renault Electronic ignition system for IC engine - has calculator which determines at each instant in time exact ignition advance angle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939811A (en) * 1974-04-10 1976-02-24 Hitachi, Ltd. Ignition apparatus for internal combustion engine
FR2295251A1 (en) * 1974-12-19 1976-07-16 Texaco Development Corp CONTROL SYSTEM OF THE INITIAL INSTANT AND THE LENGTH OF TIME INTERVALS
FR2358564A1 (en) * 1976-07-15 1978-02-10 Renault Electronic ignition system for IC engine - has calculator which determines at each instant in time exact ignition advance angle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500074A1 (en) * 1981-02-18 1982-08-20 Ducellier & Cie Automatic spark duration controller for IC engine - has electronic processor acting on engine characteristic to switch thyristor across primary of ignition coil to stop spark

Also Published As

Publication number Publication date
FR2452808B1 (en) 1983-06-17

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Legal Events

Date Code Title Description
ST Notification of lapse