EP0268528B1 - Dispositif d'allumage pour moteur à combustion - Google Patents

Dispositif d'allumage pour moteur à combustion Download PDF

Info

Publication number
EP0268528B1
EP0268528B1 EP87402524A EP87402524A EP0268528B1 EP 0268528 B1 EP0268528 B1 EP 0268528B1 EP 87402524 A EP87402524 A EP 87402524A EP 87402524 A EP87402524 A EP 87402524A EP 0268528 B1 EP0268528 B1 EP 0268528B1
Authority
EP
European Patent Office
Prior art keywords
thyristor
diode
ignition device
spark plug
zener
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 - Lifetime
Application number
EP87402524A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0268528A1 (fr
Inventor
Gérard Georges Vassal
Jean-Marie Lucien Lazzarini
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen 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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0268528A1 publication Critical patent/EP0268528A1/fr
Application granted granted Critical
Publication of EP0268528B1 publication Critical patent/EP0268528B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T15/00—Circuits specially adapted for spark gaps, e.g. ignition circuits

Definitions

  • Electromagnetic ignition devices are commonly used for rich mixtures but they are not suitable, by themselves, for ensuring the ignition of poor mixtures because the electric current delivered instantaneously is not sufficient.
  • the addition of a spark gap, placed in the air, in series with the spark plug, makes it possible to satisfy to a certain extent the condition indicated above, because of its discontinuous electrical characteristic.
  • the disadvantages of this solution are numerous: electromagnetic disturbances and dangers due to the arc, wear, unstable ignition voltage and above all, significant consumption of electrical energy intended for the spark plug (sometimes 50%).
  • Patent FR-A-2 418 419 describes a device intended for the ignition of an oil burner and intended to prevent fouling of the electrodes and the heating of the components.
  • This device comprises in its low voltage circuit a thyristor and a Zener diode which is, moreover, connected to the trigger of the thyristor.
  • This device which is of the capacitive type, is not applicable to an internal combustion engine and, in any case, does not produce an arc of sufficient duration to burn a lean air-petrol mixture.
  • US-A-4,411,247 describes a device for ensuring the static distribution of high voltage to the spark plugs of a four-cylinder engine and which consists of avalanche diodes formed of a series of chips and each interposed between the high voltage and one of the candles.
  • the subject of the present invention is an ignition device for a combustion engine using so-called “poor” air-gasoline mixtures capable of applying to the terminals of a “spark plug” a high-voltage electrical energy source capable of instantly delivering the current electrical necessary for ignition and good combustion of the mixture, and which does not have the various drawbacks mentioned above.
  • This device is characterized in that it comprises in the high voltage circuit, in series with the spark plug, a Zener diode and a thyristor in parallel with which is connected a directly conducting Zener diode in the opposite direction to that where the thyristor is conducting, this Zener diode being further connected to the trigger of the thyristor, the Zener diodes being directly passing in opposite directions.
  • FIG. 1 we see a candle 1 connected to a high voltage electrical energy source constituted here by the secondary of a coil 2.
  • the primary of this coil is connected at one of its ends at 3, to the pole positive of a battery and at its other end to ground, via a transistor 4 controlled by means 5.
  • asymmetrical bidirectional conduction means comprising a thyristor TH1, a Zener diode DZ1 and a resistor R1.
  • the thyristor TH1 is arranged so as to be passing in the direction going from the secondary of the coil 2 to the spark plug, when it is ordered;
  • the Zener diode is arranged in the opposite direction, in parallel with the thyristor, so as to be directly conductive in the direction going from the spark plug at the secondary of the coil, its end facing the spark plug 1 being connected to the trigger of the thyristor TH1 and, via the resistor R1 to the spark plug 1.
  • the means connecting the secondary of the coil 2 to the spark plug 1 are bidirectional in the sense that the electric current can flow from the coil to the spark plug as well. But they are asymmetrical because the conduction of the current is not done with the same voltage drop in both directions. In the direction from the coil to the spark plug, the device behaves like a self-controlled thyristor whereas, in the opposite direction, it behaves like a simple diode, except for resistance R1.
  • the low value resistance R1 makes it possible to adjust the tripping current of the thyristor; moreover it protects the trigger of the thyristor during the reversal of polarity of the high voltage.
  • An auxiliary Zener diode DZ a is interposed between the coil 2 on the one hand, and the thyristor TH1 and the Zener diode DZ1 on the other hand. This diode prevents any parasitic spark in the spark plug at the time of the earthing of the primary of the coil 2 by the transistor 4, during the charging of this coil.
  • the Zener voltage of the diode DZ1 must be at least of the order of 1 KV. But the Zener voltage of the device can be as large as necessary; it suffices to stack a series of elements as shown in Figure 3 in which we see two Zener diodes DZ1 and DZ2 each associated with a thyristor TH1 or TH2 and a resistor R1 or R2.
  • the thyristor trigger can be protected, in the event of polarity reversal of the high voltage, by a diode D1 connected in parallel with the resistor R1, as shown in Figure 4.
  • the spark plug 1 provided with a connection pad 1 a , the coil 2 provided with a connection pad 2 b , and the various components such as 9 a, 9 b , 9 c and 9 d fixed on a printed circuit 10, can be stored in an insulating box 11, as shown in Figures 5 and 6, so as to form a unitary assembly, this allows easily insert the device into the high voltage spark plug harness.
  • the device according to the invention behaves like a spark gap but does not cause a spark.
  • the electromagnetic disturbances are therefore negligible.
  • the ignition voltage is constant over time.
  • the voltage drop after ignition of the thyristor is negligible and the energy consumed by the device is therefore negligible.
  • the device is self-triggered as soon as the voltage across its terminals is sufficient.

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)
EP87402524A 1986-11-18 1987-11-09 Dispositif d'allumage pour moteur à combustion Expired - Lifetime EP0268528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616348 1986-11-18
FR8616348A FR2606833B1 (fr) 1986-11-18 1986-11-18 Dispositif d'allumage pour moteur a combustion

Publications (2)

Publication Number Publication Date
EP0268528A1 EP0268528A1 (fr) 1988-05-25
EP0268528B1 true EP0268528B1 (fr) 1992-02-19

Family

ID=9341145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402524A Expired - Lifetime EP0268528B1 (fr) 1986-11-18 1987-11-09 Dispositif d'allumage pour moteur à combustion

Country Status (3)

Country Link
EP (1) EP0268528B1 (OSRAM)
DE (1) DE3776759D1 (OSRAM)
FR (1) FR2606833B1 (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3936174A1 (de) * 1989-10-31 1991-05-02 Bayerische Motoren Werke Ag Kontaktlose zuendanlage fuer brennkraftmaschinen
DE4117808C2 (de) * 1991-05-31 1994-09-22 Bosch Gmbh Robert Zündanlagen für Brennkraftmaschinen mit Hochspannungsschalter
FR2835886B1 (fr) * 2002-02-08 2004-11-12 Johnson Contr Automotive Elect Module electronique pour bobine d'allumage de moteur a combustion interne

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411247A (en) * 1980-04-24 1983-10-25 Sanke Electric Co., Ltd. Distributorless ignition system for multicylinder internal-combustion engines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1077004A (en) * 1963-05-01 1967-07-26 Rotax Ltd Spark ignition apparatus
US3939814A (en) * 1975-01-10 1976-02-24 Energy Innovations Device for prolonging ignition spark
JPS54115975A (en) * 1978-02-28 1979-09-08 Yamatake Honeywell Co Ltd Ignition device for oil burner
JPS58126462A (ja) * 1982-01-25 1983-07-27 Yasuhiro Naruse バツテリ−式点火装置における、相互誘導作用による交流逆起電力を強くする同調電子回路
YU164582A (en) * 1982-07-28 1985-04-30 Esref Halilovic Self-inductive ionization energy commutator of high voltage impulses of an ignition system of carburettor motors
JPS60187769A (ja) * 1984-03-08 1985-09-25 Nissan Motor Co Ltd 内燃機関用点火装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411247A (en) * 1980-04-24 1983-10-25 Sanke Electric Co., Ltd. Distributorless ignition system for multicylinder internal-combustion engines

Also Published As

Publication number Publication date
FR2606833A1 (fr) 1988-05-20
EP0268528A1 (fr) 1988-05-25
FR2606833B1 (fr) 1989-02-24
DE3776759D1 (OSRAM) 1992-03-26

Similar Documents

Publication Publication Date Title
EP0362014B1 (fr) Générateur d'allumage haute énergie notamment pour turbine à gaz
FR2864172A1 (fr) Circuit de detection d'ionisation a double etage
EP0008835A1 (fr) Circuit électrique pour l'allumage d'un détonateur
EP0268528B1 (fr) Dispositif d'allumage pour moteur à combustion
FR2458755A1 (fr) Dispositif d'allumage de securite destine a une valve pour bruleur
EP3051101B1 (fr) Générateur d'allumage à haute énergie notamment pour turbine à gaz
US2963624A (en) Ignition systems
US4679540A (en) Ignition system
FR2603339A1 (fr) Dispositif de detection d'anomalie de combustion dans un cylindre de moteur a combustion interne a allumage commande
EP0118646B1 (fr) Dispositif d'allumage de secours pour moteurs thermiques à allumage commandé
EP0093804A1 (fr) Circuit électronique perfectionné pour l'allumage d'un détonateur
ES2184051T3 (es) Sistema de ignicion con comando de distribucion de la tension del generador.
FR2675206A1 (fr) Procede et dispositif de detection d'un rate d'allumage dans un moteur a combustion interne et leurs applications.
US4346690A (en) CD Ignition with isolation circuit to provide immediate recharging of the charge capacitor
EP0163332A1 (fr) Relais statique pour courant continu
FR2755321A1 (fr) Dispositif de commande pour une generatrice de vehicule
EP0926338B1 (fr) Dispositif de mesure du courant d'ionisation dans une chambre de combustion
US4509496A (en) Ignition circuit for internal combustion engine having alternately operable high and low speed control devices
EP0154567B1 (fr) Dispositif de protection pour système d'allumage de véhicule automobile
EP0280616B1 (fr) Appareil d'alimentation en énergie électrique d'un câble et son application
FR2769956A1 (fr) Dispositif d'allumage pour moteur a combustion interne
EP0002646A1 (fr) Dispositif d'allumage par décharge inductive
FR2534635A1 (fr) Dispositif d'allumage a bobine pour moteur a combustion interne
JPS597781A (ja) 内燃機関の点火装置
FR2779183A1 (fr) Procede de controle moteur selon l'encrassement des bougies d'allumage et dispositif de mise en oeuvre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880316

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17Q First examination report despatched

Effective date: 19891116

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3776759

Country of ref document: DE

Date of ref document: 19920326

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19951103

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19951123

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19961109

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19961109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051109