FR2425178A1 - Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals - Google Patents

Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals

Info

Publication number
FR2425178A1
FR2425178A1 FR7812993A FR7812993A FR2425178A1 FR 2425178 A1 FR2425178 A1 FR 2425178A1 FR 7812993 A FR7812993 A FR 7812993A FR 7812993 A FR7812993 A FR 7812993A FR 2425178 A1 FR2425178 A1 FR 2425178A1
Authority
FR
France
Prior art keywords
triggered
sensor
signal generator
electronic ignition
oscillator
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
FR7812993A
Other languages
French (fr)
Other versions
FR2425178B1 (en
Inventor
Michel Gillaizeau
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.)
Motorola Automobile SA
Original Assignee
Motorola Automobile 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 Motorola Automobile SA filed Critical Motorola Automobile SA
Priority to FR7812993A priority Critical patent/FR2425178A1/en
Publication of FR2425178A1 publication Critical patent/FR2425178A1/en
Application granted granted Critical
Publication of FR2425178B1 publication Critical patent/FR2425178B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
    • H03K3/0231—Astable circuits
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/015—Modifications of generator to maintain energy constant

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

A signal generator and processor is for electronic ignition circuits used in vehicle engines. The generator is triggered by a sensor (11) associated with the engine flywheel, the input stage consisting of a monostable oscillator (12). The oscillator square wave output is inverted and integrated (13) such that a linear ramp is provided for both mark and space periods in the square wave train. The slope of the sawtooth wave form is constant whatever the square wave frequency and feeds an operational amplifier (14) in turn generating a well defined fast pulse at each change from a positive to negative slope.
FR7812993A 1978-05-02 1978-05-02 Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals Granted FR2425178A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7812993A FR2425178A1 (en) 1978-05-02 1978-05-02 Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7812993A FR2425178A1 (en) 1978-05-02 1978-05-02 Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals

Publications (2)

Publication Number Publication Date
FR2425178A1 true FR2425178A1 (en) 1979-11-30
FR2425178B1 FR2425178B1 (en) 1983-10-07

Family

ID=9207824

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812993A Granted FR2425178A1 (en) 1978-05-02 1978-05-02 Signal generator for electronic ignition circuits - is triggered from sensor on flywheel of IC engine and integrates oscillator mark-space signals

Country Status (1)

Country Link
FR (1) FR2425178A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433113A1 (en) * 1978-05-12 1980-03-07 Motorola Inc
EP0135121A1 (en) * 1983-08-12 1985-03-27 Siemens Aktiengesellschaft Circuit arrangement for generating square wave signals
EP0191418A3 (en) * 1985-02-11 1987-08-26 Nippondenso Co., Ltd. Ignition system for internal combustion engines
US5041979A (en) * 1987-04-08 1991-08-20 Motorola, Inc. Bounded synchronous angle counter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712992A (en) * 1971-11-23 1973-01-23 Gen Motors Corp Pulse length multiplier circuit
US4057740A (en) * 1976-08-23 1977-11-08 W. R. Grace & Co. Constant duty cycle monostable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712992A (en) * 1971-11-23 1973-01-23 Gen Motors Corp Pulse length multiplier circuit
US4057740A (en) * 1976-08-23 1977-11-08 W. R. Grace & Co. Constant duty cycle monostable

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433113A1 (en) * 1978-05-12 1980-03-07 Motorola Inc
EP0135121A1 (en) * 1983-08-12 1985-03-27 Siemens Aktiengesellschaft Circuit arrangement for generating square wave signals
US4736118A (en) * 1983-08-12 1988-04-05 Siemens Aktiengesellschaft Circuit arrangement to generate squarewave signals with constant duty cycle
EP0191418A3 (en) * 1985-02-11 1987-08-26 Nippondenso Co., Ltd. Ignition system for internal combustion engines
US5041979A (en) * 1987-04-08 1991-08-20 Motorola, Inc. Bounded synchronous angle counter

Also Published As

Publication number Publication date
FR2425178B1 (en) 1983-10-07

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Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name
ST Notification of lapse