US3791364A - Ignition system for internal combustion engine - Google Patents

Ignition system for internal combustion engine Download PDF

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Publication number
US3791364A
US3791364A US00146934A US3791364DA US3791364A US 3791364 A US3791364 A US 3791364A US 00146934 A US00146934 A US 00146934A US 3791364D A US3791364D A US 3791364DA US 3791364 A US3791364 A US 3791364A
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United States
Prior art keywords
ignition
capacitor
signals
state
time
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Expired - Lifetime
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US00146934A
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English (en)
Inventor
T Salta
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • 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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/155—Analogue data processing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • ABSTRACT The disclosed ingition system includes a monostable [30] Foreign Application Priorit Dat multivibrator passing into its semistable state each June 3, 1970 Japan 45/54605 time the associated ergine is be ignited Put a normally conducting switching transistor in its non- [52] Cl. 123/148 E, 123/1465 A conducting state. This causes the interruption of a cur- 51 Int. c1. F02p 3/02 rem flowing through an ignition to generate.
  • This invention relates to an ignition system for use with an internal combustion engine including a semiconductor switch adapted to be put in its nonconducting state to interrupt a current flowing through an ignition coil involved thereby to induce an ignition voltage across the secondary of the coil each time the engine is to be ignited. More particularly it concerns improvements in such an ignition system further including a monostable multivibrator for shaping a waveform of an ignition signal for controlling the semiconductor switch.
  • a time interval for which a current flowing through the ignition coil is interrupted has remains unchanged independently of a variation in speed of rotation of the engine. This is because the interrupting time interval for the ignition coil has been determined by the operating time of the monostable multivibrator for which it is put in its semistable state.
  • the ignition coil has been designed to have flowing therethrough 'a current for a time interval long enough to permit ignition voltage or sparks produced thereby to be sufficiently high or strong even in the case the engine increases in speed of rotation to proportionally decrease a time interval between the successive ignition sparks or an interspark time.
  • the ignition coil has been energized through a supply circuit having a time constant in the low speed mode of operation equal to that in the high speed mode of operation of the engine. Accordingly, in the low. speed mode of operation the current continues to flow through the ignition coil after a sufficiently high quantity of electromagnetic energy has been accumulated by the ignition coil. This has resulted in the generation of heat on the ignition coil due to its electric resistance and therefore in an increase in temperature of the coil. Thus the ignition coil might decrease in useful life causing a decrease in reliability of the associated ignition circuit.
  • an ignition system for use with an internal combustion engine comprising means including an ignition time-detection circuit responsive to the rotational movement of the engine to generate one first signal or ignition signal each time the engine is to be ignited, a switching circuit triggered into one state or its operating state with theignition signal, the switching circuit including means for determining the operating time thereof including a capacitor, and an ignition circuit responsive to the triggering of the switching circuit into its operating state to interrupt a current flowing therethrough to produce an ignition spark, characterized in that means is provided for changing an electric charge on the capacitor in accordance with the speed of rotation of the engine.
  • the switching circuit may be formed preferably of a monostable multibivrator including a pair of first and second semiconductor elements, the capacitor capable of charging when the first semiconductor element is in its operating state, and a resistor high in magnitude of resistance and connected in a charging circuit for the capacitor.
  • a rectifier element may be connected in a discharging circuit for the capacitor and across the resistor connected in the charging circuit for the capacitor, the rectifier element being so poled as to be forward with respect to a flow of discharging current from the capacitor and when conducted, short-- circuiting the resistor.
  • FIG. 1 is a graph useful in explaining the principles of the invention.
  • FIG. 2 is a schematic circuit diagram of an ignition system constructed in accordance with the principles of the invention.
  • FIG. 1 of the drawing there is illustrated a graph useful in explaining the principles of the invention.
  • a straight line A depicts the ignition characteristic of the conventional type of engines that a time interval between successive ignition sparks or an interspark time interval gradually decreases with an increase in speed of rotation of the engine.
  • Another straight line C shows an operating time of a monostable multivibrator used in a conventional ignition system such as above outlined.
  • the operating time of the monostable 'multivibrator for which it is in its semistable state remains substantially unchanged in spite of an increase in speed of rotation of the engine. Since the monostable multivibrator is put in its operating state to open the associated semiconductor switch as above described, a current flowing through the ignition coil is kept interrupted for the operating time of the monostable multivibrator. In other words, the ignition coil has a current interrupting time equal to the operating time of the monostable multivibrator and remaining substantially unchanged regardless of a change in speed of rotation of the engine.
  • a time interval for which. a current is flowing through the ignition coil or the conduction time thereof is equal to a difference in ordinate between the respective points on the lines A and C corresponding to that speed of rotation of the engine. It has been commonly practiced to render this conduction time long enough to permit sufficiently strong ignition spark to be produced even at the high speed mode of operation of the engine. Therefore the ignition coil has been energized through a'supply circuit having a time constant remaining unchanged between the high and low speed modes of operation of the engine with the result that in the low speed mode of operation the current continues to flow through the ignition coil even after a sufficiently high 3 quantity of electromagnetic energy has accumulated by the coil. This has led to the generation of heat on the ignition coil due to its electric resistance and therefore to an increase in temperature of the coil. Therefore the ignition coil might decrease in useful life while the associated ignition system might have a less reliability.
  • the invention contemplates to eliminate the disadvantages of the prior art type ignition systems as above described by the provision of improved means for rendering a time interval for which the current flowing through the ignition coil is interrupted, longer in the low speed mode of operation of the associated internal combustion engine and rendering it shorter as the speed of rotation of the engine becomes higher.
  • the interrupting time for the ignition coil is caused to change in proportion to a variation in interspark time relative to a change in speed of rotation of the engine as shown at line A in the same Figure.
  • the ignition coil is given a sufficiently high quantity of electromagnetic energy while eliminating a thermal loss of the ignition coil.
  • the arrangement illustrated means comprising an ignition time-detection circuit ID for detecting time points at which the associated internal combustion en gine (not shown) is to be ignited, a transistor switching circuit MM and an ignition circuit IC.
  • the ignition detection circuit ID includes a signal generator of the conventional construction responsive to the rotational movement of the engine to produce one ignition signal at each ignition time-point a semiconductor diode 12 and an NPN type transistor 14- disposed in series circuit relationship in the named order.
  • the transistor 14 has a base electrode connected to the cathode electrode of the diode 12, an emitter electrode connected to ground and a collector electrode connected through a collector resistor 16 to a positive terminal of a source of direct current B with the generator also connected to ground.
  • the collector electrode of the transistor 14 is connected to a capacitor 18 which is, in turn, con nected to both an anode electrode of a semiconductor diode 20 and a cathode electrode of another semiconductor diode 22.
  • the diode 20 is connected at the cathode electrode to ground and the diode 22 is connected at the anode electrode to the transistor switching circuit MM.
  • the transistor switching circuit MM is formed of a monostable multivibrator including an NPN type transistor 2 3 of common emitter configuration having a collector electrode connected to the positive terminal of the source 8 through a collector resistor 26 and a base electrode connected to the anode electrode of the diode 22 and also to ground through a resistor 28.
  • the collector electrode of the transistor 24 is further connected through a resistor 30 to a base electrode of another NPN type transistor 32 of common emitter configuration.
  • the transistor 32 has a collector electrode connected to the base electrode of the transistor 24 through a series combination of a capacitor 34 and a resistor 36 and also to the positive terminal of the source B through a collector resistor 38.
  • the junction of the capacitor 34 and the base electrode of the transistor 24 is connected to the positive terminal of the source B through a resistor 40 and the resistor 36 is connected across a rectifier a semiconductor diode 42 so poled as to be permit a discharging current from the capacitor 34 to flow therethrough.
  • the ignition circuit IC includes an NPN type transistor 44, of common emitter configuration having a base electrode connected to the collector electrode of the transistor 32 and a collector electrode connected to ground through a constant voltage diode 46 such as a Zener diode and also to the positive terminal of the source B through a primary winding of an ignition coil 48 having a secondary winding operatively coupled to the associated engine (not shown) in the well known manner.
  • a constant voltage diode 46 such as a Zener diode
  • an ignition coil 48 having a secondary winding operatively coupled to the associated engine (not shown) in the well known manner.
  • the switching circuit or the monostable multivibrator circuit MM is in its stable state in which the transistor 24 is conducting while the transistor 32 is not conducting and that a base current is applied to the switching transistor 44 from the source B through the resistor 38 to put it in the conducting state thereby to permit a current to flow through the primary winding of the coil 48 from the source B.
  • the capacitor 18 of the ignition detection circuit ID has been charged from the source B through the resistor 16 and the diode 20 with the polarity illustrated in FIG. 2.
  • the signal generator 10 produces a voltage indicative of an ignition signal. This voltage is then applied through the diode 12 to the transistor 14 to put it in its conducting state. Therefore the capacitor 18 charged with the illustrated polarity discharges through a circuit traced from the capacitor 18 through the nonconducting transistor 14, ground, the resistor 28 and the diode 22. This discharge of the capacitor 18 causes the monostable multivibrator circuit MM to pass into its semistable state or its operating state where it remains for a given time interval before returning back to its original stable state. In the semistable state of the monostable multivibrator circuit MM the transistor 24 becomes nonconducting through the interruption of its base current while the transistor 32 is put in its conducting state.
  • the conduction of the transistor 32 develops a second signal or switching signal that causes the base current to the switching transistor 44 to be interrupted thereby to put the transistor 44 in its nonconducting state.
  • the primary current flowing through the ignition coil 48 is interrupted resulting in the generation of a high voltage on the secondary of the coil 48 sufficient to apply an ignition spark to the engine.
  • the monostable multivibrator circuit MM remains in its semistable or operating state until the capacitor 34 has been completely discharged. Therefore as long as the monostable multivibrator circuit MM is maintained in its operating state the transistor 44 is in its nonconducting state in which the current is prevented from flowing through the ignition coil.
  • the invention includes means for controlling the discharging time of the capacitor 34 in accordance with the speed of rotation of the associated engine, the dis charging time determining the operating time of the monostable multivibrator MM for which it remains in its semistable state. More specifically, the resistor 36 is preselected to be high in magnitude of resistance and serially connected, in addition to the collector resistor 38 for the transistor 32, to the capacitor 34 to impart a large time constant to a circuit for charging the capacitor 34 and also connected across the diode 42 poled to so as to permit discharging current from the capacitor 34 to flow therethrough.
  • This measure is effective for decreasing an electric charge on the capacitor 34 in the high speed mode of operation of the engine where the inter-spark time is short and also for decreasing ,the discharging time of the capacitor 34 by means of the diode 42 conducting to shortcircuit the resistor 36.
  • the ignition system for internal combustion engines has been provided having the desired characteristics that a current flowing through the ignition coil has its interrupting timelonger by the low speed mode of operation of the engine and shorter with an increase in speed of rotation of the engine as determined by the operating time of the associated monostable multivibrator.
  • the current flowing through the ignition coil is interrupted for a time inter. val shorter in proportion to an increase in speed of rotation of the engine as shown at line B in FIG. 1.
  • the invention has several advantages. For example, even with the current conducting time of the ignition coil determined so as to produce sufficiently strong ignition sparks in the high speed mode of operation of the engine, the current conducting time thereof in the low speed mode of operation can be fixed to a minimum possible limit. Also the current is permitted to flow through the ignition coil only for a predetermined fixed time interval regardless of the speed of rotation of the associated engine. Therefore the thermal loss due to the ignition coil can reduce to a minimum necessary magnitude.
  • An ignition system for use with an internal combustion engine comprising: ignition time-detection means for developing in use ignition signals corresponding to the ignition timing of anintemal combustion engine varying in time in dependence upon the speed of rotation of said engine; a switching circuit receptive of said ignition signals and having two states and comprising means responsive to said ignition signals for switching into one state for a predetermined time for each ignition signal inversely proportional to the frequency of said ignition signals and means for developing switching signals corresponding in frequency and duration to said one state; and an ignition circuit receptive of said switching signals for developing spark signals for developing ignition sparks said spark signals corresponding in frequency and duration to said switching signals; wherein said switching circuit comprises a monostable multivibrator including a pair of first and second semiconductor elements, each having an operating state, a chargeable and dischargeable capacitor being dischargeable when said second semiconductor element is in said operating state, means defining a capacitor charging circuit connected to said capacitor including a resistor, and means defining a capacitor discharging circuit connected to said capacitor including a semiconductor rectifier element connected
  • An ignition system for use with an internal combustion engine comprising; ignition time-detection means for developing in use ignition signals corresponding to the ignition timing of an internal combustion engine varying in time in dependence upon the speed of rotation of said engine; a switching circuit receptive of said ignition signals and having two states and comprising means responsive to said ignition signals for switching into one state for a predetermined time for each ignition signal inversely proportional to the frequency of said ignition signals and means for developing switching signals corresponding in frequency and duration to said one state; and an ignition circuit receptive of said switching signals for developing spark signals for developing.
  • said switching circuit comprises a monostable multivibrator including a pair of first and second semiconductor elements, each having an operating state, a triggering circuit for triggering said first semiconductor element, a chargeable and dischargeable capacitor being dischargeable when said second semiconductor element is in said operating state, means defining a charging circuit connected to said capacitor including a resistor, and means defining a discharging circuit connected to said capacitor including a semiconductor rectifier element connected across said resistor, said rectifier element being so poled as to be conductive with respect to a flow of discharging current from said capacitor and when conductive, shortcircuiting said resistor, and wherein said ignition time-detection means includes a signal generator responsive to the rotational movementof the engine for generatingsaid ignition signal, a third semiconductor element having an inoperative state and an operating state responsive to said ignition signal from said signal generator, another'chargeable and dischargeable capacitor charged when said third semiconductor element is in said inoperative state and discharged through said semiconductor element
  • An ignition system for use with an internal combustion engine comprising: means for developing in use first signals corresponding to the ignition timing of an internal combustion engine varying in frequency in dependence upon the speed of rotation of said engine; a switching circuit receptive of said first signals and having two states and comprising means responsive to said first signals for switching into one state for each first signal for a variable duration of time determinable by the frequency of said first signals, and means for developing second signals corresponding in frequency and duration to said one state thereby having a frequency corresponding to the frequency of said first signals; an ignition circuit receptive of said second signals for developing engine ignition signals corresponding in frequency and duration to said second signals;
  • said switching circuit comprises; a monostable multivibrator having means therein defining each variable duration of time comprising a chargeable and dischargeable capacitor, voltage supply means having a predetermined voltage and for developing a voltage charge across said capacitor in the other state, means defining a capacitor charge path connected to said capacitor and receptive of said predetermined voltage for charging said capacitor in said other state and having a first time constant, and means defining a capacitor discharge path connected to said capacitor for discharging same in said one state and having a second time constant wherein said first time constant is substantially greater than said second time constant, whereby as said speed of rotation of said engine increases the time for charging said capacitor decreases decresing the peak voltage charge across said capacitor thereby decreasing the time for discharging same;
  • said means defining said charge path and said means defining said discharge path comprise common circuit elements including; a resistor, and a rectifier element connected in parallel with said resistor and poled to be in a nonconductive state during the charging of said capacitor and in a conductive state during the discharge of said capacitor thereby shortcircuiting said resistor.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US00146934A 1970-06-03 1971-05-26 Ignition system for internal combustion engine Expired - Lifetime US3791364A (en)

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JP1970054605U JPS5114976Y1 (enrdf_load_stackoverflow) 1970-06-03 1970-06-03

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JP (1) JPS5114976Y1 (enrdf_load_stackoverflow)
DE (1) DE2127674C3 (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871347A (en) * 1972-11-20 1975-03-18 Motorola Inc Constant dwell ignition system
US3874355A (en) * 1972-08-09 1975-04-01 Hitachi Ltd Ignition device for internal combustion engine equipped with protective device
US3881458A (en) * 1972-09-13 1975-05-06 Bosch Gmbh Robert Ignition system dependent upon engine speed
US3890944A (en) * 1972-10-07 1975-06-24 Bosch Gmbh Robert Electronic ignition system with automatic ignition advancement and retardation
US3908622A (en) * 1973-07-26 1975-09-30 Hays Enterprises Ignition system
US3915542A (en) * 1973-01-24 1975-10-28 South East Europ Purchasing & Electronic ignition device for combustion engines of motors vehicles
US3926557A (en) * 1972-08-21 1975-12-16 Kyberna Gmbh Ignition device for internal combustion engines
US3973544A (en) * 1972-08-23 1976-08-10 Hitachi, Ltd. Ignition system for internal combustion engines
FR2359989A1 (fr) * 1976-07-28 1978-02-24 Ducellier & Cie Dispositif electronique de commande d'allumage de moteur a combustion interne
US4075997A (en) * 1973-10-19 1978-02-28 Lucas Electrical Co., Limited Spark ignition systems for internal combustion engines
USRE29862E (en) * 1972-09-13 1978-12-19 Robert Bosch Gmbh Ignition system dependent upon engine speed
FR2401327A1 (fr) * 1977-08-23 1979-03-23 Gunton Electronics Ltd Systeme d'allumage inductif pour moteurs a combustion interne et procede de commande de ce systeme
US4188929A (en) * 1976-08-17 1980-02-19 Robert Bosch Gmbh Internal combustion engine magneto-type ignition system with electronically controlled spark advance
US4304212A (en) * 1976-04-05 1981-12-08 U.S. Philips Corporation Optoelectronic ignition device for an internal combustion engine
RU2136954C1 (ru) * 1997-11-10 1999-09-10 Военный автомобильный институт Устройство электронного зажигания для двигателей внутреннего сгорания

Families Citing this family (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
DE2424896C2 (de) * 1974-05-22 1982-07-08 Robert Bosch Gmbh, 7000 Stuttgart Zündeinrichtung für eine Brennkraftmaschine
DE2455593C2 (de) * 1974-11-23 1985-04-25 Robert Bosch Gmbh, 7000 Stuttgart Zündanlage für Brennkraftmaschinen
DE2648531C2 (de) * 1976-10-27 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Zündeinrichtung für Brennkraftmaschinen
DE2701967C2 (de) * 1977-01-19 1982-12-09 Robert Bosch Gmbh, 7000 Stuttgart Zündeinrichtung für Brennkraftmaschinen
DE2833478A1 (de) * 1978-07-29 1980-02-07 Bosch Gmbh Robert Zuendanlage fuer eine brennkraftmaschine
KR950000227B1 (ko) * 1987-02-27 1995-01-12 미쯔비시 덴끼 가부시끼가이샤 내연기관의 점화시기 제어장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322107A (en) * 1965-04-14 1967-05-30 Ford Motor Co Ignition system
US3357416A (en) * 1965-10-11 1967-12-12 Gen Motors Corp Transistorized ignition system having an integrating circuit
US3473061A (en) * 1966-08-27 1969-10-14 Bosch Gmbh Robert Ignition arrangements for internal combustion engines
US3554169A (en) * 1968-01-23 1971-01-12 Bosch Gmbh Robert Fuel injection arrangement for internal combustion engines
US3605713A (en) * 1970-05-18 1971-09-20 Gen Motors Corp Internal combustion engine ignition system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322107A (en) * 1965-04-14 1967-05-30 Ford Motor Co Ignition system
US3357416A (en) * 1965-10-11 1967-12-12 Gen Motors Corp Transistorized ignition system having an integrating circuit
US3473061A (en) * 1966-08-27 1969-10-14 Bosch Gmbh Robert Ignition arrangements for internal combustion engines
US3554169A (en) * 1968-01-23 1971-01-12 Bosch Gmbh Robert Fuel injection arrangement for internal combustion engines
US3605713A (en) * 1970-05-18 1971-09-20 Gen Motors Corp Internal combustion engine ignition system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874355A (en) * 1972-08-09 1975-04-01 Hitachi Ltd Ignition device for internal combustion engine equipped with protective device
US3926557A (en) * 1972-08-21 1975-12-16 Kyberna Gmbh Ignition device for internal combustion engines
US3973544A (en) * 1972-08-23 1976-08-10 Hitachi, Ltd. Ignition system for internal combustion engines
US3881458A (en) * 1972-09-13 1975-05-06 Bosch Gmbh Robert Ignition system dependent upon engine speed
USRE29862E (en) * 1972-09-13 1978-12-19 Robert Bosch Gmbh Ignition system dependent upon engine speed
US3890944A (en) * 1972-10-07 1975-06-24 Bosch Gmbh Robert Electronic ignition system with automatic ignition advancement and retardation
US3871347A (en) * 1972-11-20 1975-03-18 Motorola Inc Constant dwell ignition system
US3915542A (en) * 1973-01-24 1975-10-28 South East Europ Purchasing & Electronic ignition device for combustion engines of motors vehicles
US3908622A (en) * 1973-07-26 1975-09-30 Hays Enterprises Ignition system
US4075997A (en) * 1973-10-19 1978-02-28 Lucas Electrical Co., Limited Spark ignition systems for internal combustion engines
US4304212A (en) * 1976-04-05 1981-12-08 U.S. Philips Corporation Optoelectronic ignition device for an internal combustion engine
FR2359989A1 (fr) * 1976-07-28 1978-02-24 Ducellier & Cie Dispositif electronique de commande d'allumage de moteur a combustion interne
US4188929A (en) * 1976-08-17 1980-02-19 Robert Bosch Gmbh Internal combustion engine magneto-type ignition system with electronically controlled spark advance
FR2401327A1 (fr) * 1977-08-23 1979-03-23 Gunton Electronics Ltd Systeme d'allumage inductif pour moteurs a combustion interne et procede de commande de ce systeme
RU2136954C1 (ru) * 1997-11-10 1999-09-10 Военный автомобильный институт Устройство электронного зажигания для двигателей внутреннего сгорания

Also Published As

Publication number Publication date
DE2127674B2 (de) 1974-02-21
JPS5114976Y1 (enrdf_load_stackoverflow) 1976-04-20
DE2127674A1 (de) 1971-12-09
DE2127674C3 (de) 1974-10-03

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