GB1409748A - Ignition control systems - Google Patents

Ignition control systems

Info

Publication number
GB1409748A
GB1409748A GB5729372A GB5729372A GB1409748A GB 1409748 A GB1409748 A GB 1409748A GB 5729372 A GB5729372 A GB 5729372A GB 5729372 A GB5729372 A GB 5729372A GB 1409748 A GB1409748 A GB 1409748A
Authority
GB
United Kingdom
Prior art keywords
circuit
current
coil
chip
voltage
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.)
Expired
Application number
GB5729372A
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.)
Fairchild Semiconductor Corp
Original Assignee
Fairchild Camera and Instrument 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 Fairchild Camera and Instrument Corp filed Critical Fairchild Camera and Instrument Corp
Publication of GB1409748A publication Critical patent/GB1409748A/en
Expired 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
    • 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
    • F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
    • F02P3/051—Opening or closing the primary coil circuit with semiconductor devices
    • 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
    • F02P3/055—Layout of circuits with protective means to prevent damage to the circuit, e.g. semiconductor devices or the ignition coil
    • F02P3/0552—Opening or closing the primary coil circuit with semiconductor devices

Abstract

1409748 Ignition systems FAIRCHILD CAMERA & INSTRUMENT CORP 12 Dec 1972 [6 April 1972] 57293/72 Heading FIB While the engine is operating at a low speed an initial bias reference circuit 13 controls the turn-on and turn off of the Darlington output circuit 19. The circuit 19 is turned on when the waveform from the pick-up coil 10 rises above the threshold voltage produced by the circuit 13 and is turned off when this waveform falls beneath this voltage. Turning on of the circuit 19 causes a current to flow through the primary coil 31 of the ignition coil 30. Turning off the Darlington output circuit 19 induces a voltage pulse in the secondary winding 32 of coil 30 which fires the appropriate sparking plug. When the engine speed reaches a given value a signal from the dwell feedback control 12a turns on the Darlington output circuit 19 when this signal rises above a reference level. This reference level increases as the engine speed increases turning on the Darlington output circuit 19 at an earlier time. A current limiter 16 in a LIC (linear integrated circuit) chip 20 changes the reference voltage produced by a tachometer 12b to a new value such that the current through primary 31 remains at its maximum value for at most a selected short period of time. A transient protection device operates to turn off the Darlington output circuit 19 if the transient voltage rises above 28 volts. This is done by turning on the output driver circuit 15. To limit the current in the case of an over-voltage condition in the LIC chip 20 current limiting resistors are placed in every current path. The current in the primary winding of the ignition coil remains on while the amplitude of the output signal from the coil 10 increases to a maximum positive value and then drops very sharply towards a peak negative value. The level of the signal from the coil 10 at which the current through the circuit 19 cuts off is beneath a reference voltage by an amount controlled by certain circuit parameters. The system can be produced using only two semi- conductor chips. One chip is the basic LIC chip 20. The other chip contains the Darlington output circuit. Details of the circuitry of these chips are given in the Specification.
GB5729372A 1972-04-06 1972-12-12 Ignition control systems Expired GB1409748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24175272A 1972-04-06 1972-04-06

Publications (1)

Publication Number Publication Date
GB1409748A true GB1409748A (en) 1975-10-15

Family

ID=22912038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5729372A Expired GB1409748A (en) 1972-04-06 1972-12-12 Ignition control systems

Country Status (7)

Country Link
JP (1) JPS584188B2 (en)
CA (1) CA1013418A (en)
DE (1) DE2307443A1 (en)
FR (1) FR2179376A5 (en)
GB (1) GB1409748A (en)
HK (1) HK75678A (en)
IT (1) IT982428B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138495A (en) * 1983-03-26 1984-10-24 Motorola Inc Automotive ignition systems

Families Citing this family (27)

* 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
JPS5734463B2 (en) * 1974-06-07 1982-07-23
JPS517345A (en) * 1974-07-04 1976-01-21 Mitsubishi Electric Corp NAINENKI KANTENKASOCHINO HEIRORITSUSEIGYOSOCHI
DE2542776C2 (en) * 1975-09-25 1982-08-19 Robert Bosch Gmbh, 7000 Stuttgart Protection circuit for an ignition device belonging to an internal combustion engine
FR2315618A1 (en) * 1975-06-26 1977-01-21 Schlumberger Compteurs Ignition circuit for IC engine - has protective transistor switch which responds to Zener diode voltage
JPS524933A (en) * 1975-07-02 1977-01-14 Hitachi Ltd Semi-conductor ignition device
DE2616693C3 (en) * 1976-04-15 1980-09-18 Robert Bosch Gmbh, 7000 Stuttgart Ignition system for internal combustion engines
FR2357108A1 (en) * 1976-06-29 1978-01-27 Sev Marchal PERIODIC CHARGING DEVICE OF A SELF, IN PARTICULAR FOR AUTOMOTIVE VEHICLE IGNITION COILS
JPS5311242A (en) * 1976-07-19 1978-02-01 Hitachi Ltd Electric current control type ignition device
DE2729505C2 (en) * 1977-06-30 1985-05-23 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for internal combustion engines
DE2736178C2 (en) * 1977-08-11 1985-10-31 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for an internal combustion engine
DE2736143C2 (en) * 1977-08-11 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for internal combustion engines
DE2759154C2 (en) * 1977-12-31 1985-11-14 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for internal combustion engines
DE2821062A1 (en) * 1978-05-13 1979-11-22 Bosch Gmbh Robert Ignition system for IC engine - has interrupter controlled by output of threshold switch, itself controlled by signal generator
JPS54158536A (en) * 1978-06-02 1979-12-14 Hitachi Ltd Current control circuit for ignition device
US4275701A (en) * 1979-04-26 1981-06-30 Fairchild Camera & Instrument Corp. Ignition control system
US4324216A (en) * 1980-01-09 1982-04-13 Fairchild Camera & Instrument Corp. Ignition control system with electronic advance
JPS5948306B2 (en) * 1980-05-23 1984-11-26 株式会社デンソー Non-contact ignition device for internal combustion engines
EP0044745A1 (en) * 1980-07-22 1982-01-27 EDA Sparkrite Limited Control of a switching means in an electrical circuit
JPS5783646U (en) * 1980-11-11 1982-05-24
DE3119972A1 (en) * 1981-05-20 1982-12-02 Robert Bosch Gmbh, 7000 Stuttgart Overload protection device
JPS57204629A (en) * 1981-06-12 1982-12-15 Nec Corp Control circuit of pulse width
JPS6117181U (en) * 1985-06-10 1986-01-31 株式会社デンソー Non-contact ignition device for internal combustion engines
JPH0432073Y2 (en) * 1988-10-13 1992-07-31
JPH02245478A (en) * 1989-03-20 1990-10-01 Mitsubishi Electric Corp Ignition device for internal combustion engine
KR950003338B1 (en) * 1989-05-15 1995-04-10 미쓰비시덴키 가부시키가이샤 Ignition apparatus for internal combustion engine
JP4188788B2 (en) * 2003-09-25 2008-11-26 三菱電機株式会社 Capacity discharge ignition device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138495A (en) * 1983-03-26 1984-10-24 Motorola Inc Automotive ignition systems

Also Published As

Publication number Publication date
FR2179376A5 (en) 1973-11-16
HK75678A (en) 1979-01-05
IT982428B (en) 1974-10-21
CA1013418A (en) 1977-07-05
DE2307443A1 (en) 1973-10-18
JPS4914833A (en) 1974-02-08
JPS584188B2 (en) 1983-01-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee