EP0968368B1 - Montage de circuit pour etage final d'allumage - Google Patents

Montage de circuit pour etage final d'allumage Download PDF

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Publication number
EP0968368B1
EP0968368B1 EP98912264A EP98912264A EP0968368B1 EP 0968368 B1 EP0968368 B1 EP 0968368B1 EP 98912264 A EP98912264 A EP 98912264A EP 98912264 A EP98912264 A EP 98912264A EP 0968368 B1 EP0968368 B1 EP 0968368B1
Authority
EP
European Patent Office
Prior art keywords
switch
transistor
switching means
circuit arrangement
switching
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
EP98912264A
Other languages
German (de)
English (en)
Other versions
EP0968368A1 (fr
Inventor
Helmut Schmied
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0968368A1 publication Critical patent/EP0968368A1/fr
Application granted granted Critical
Publication of EP0968368B1 publication Critical patent/EP0968368B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
    • F02P3/0435—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices

Definitions

  • the invention relates to a circuit arrangement of a Ignition, especially for an ignition circuit of a Motor vehicle, with in the preamble of the claim 1 mentioned features.
  • EP 0 244 633 B1 discloses an ignition system for internal combustion engines, in which the primary winding is driven by means of a drive circuit which has an increase influenced by the current of the primary winding. This is the emergence of a Einschaltzündfunkens counteracted. In the known circuit is disadvantageous that this is relatively expensive.
  • the circuit arrangement according to the invention with the features mentioned in claim 1 offers the advantage of using simple means that easily fit into an existing drive circuit to be integrated, a suppression of Einschaltzündfunkens done can. Because the high-impedance parallel circuit a two-stage switching on the Ignition coil causes, it is possible in a simple manner, at the switch-on the primary current to limit and thus the transmission of a primary voltage jump on to prevent the secondary coil.
  • the two-stage switching via a timer so that the switching time from the first in the second switching state defined can be specified.
  • the switchover is more preferred Way at a time when the secondary voltage of the secondary coil after switching on with the inrush of the first switching stage decaying is.
  • FIG. 1 shows a circuit arrangement 10 of an ignition output stage an internal combustion engine.
  • FIG. 1 is only one ignition output stage shown, depending on Number of cylinders of the internal combustion engine a corresponding one Number of ignition stages are provided.
  • the transistor T3 is designed as a multiple Darlington transistor stage.
  • the transistor T3 is connected with its collector to the primary winding 14 of an ignition coil 16, whose other terminal is connected to a supply voltage, for example, the voltage U Bat of a motor vehicle battery.
  • the ignition coil 16 has, in a known manner, a secondary coil 18, whose one terminal is also connected to the supply voltage and the other terminal is in communication with an indicated spark plug 20.
  • the emitter C of the transistor T3 is connected to ground.
  • the input terminal 12 is further connected via a resistor R2 is connected to the base of a transistor T2.
  • the collector of the transistor T2 is via a Resistor R3 to the collector C of the transistor T3 connected.
  • the emitter of the transistor T2 is with connected to the emitter E of the transistor T3.
  • the input terminal 12 is connected to a Input of a timer 22 connected to the output connected to the base of a transistor T1 is.
  • the collector of the transistor T1 is connected to the Base of the transistor T3 and the emitter of the Transistor T1 to the emitter E of the transistor T3 connected.
  • the transistors T2 and T1 With an input signal at the input terminal 12, the transistors T2 and T1 are turned on, so that they are immediately conductive (t 0 ).
  • the open transistor T1 blocks in this case by the connection of the collector of the transistor T1 to the base of the transistor T3, the transistor T3.
  • the connection of the primary coil 14 to ground via the collector terminal C is effected by the open transistor T2 and the resistor R3 connected in series therewith.
  • the resistor R3 is selected to be high-impedance, that is, this has a resistance which is substantially greater than the resistance of the primary winding 14. Via the transistor T2 and the resistor R3, the transistor T3 is practically bypassed.
  • the transistor T1 After a preset time (t 1 ) at the timer 22, the transistor T1 is turned off, so that thereby the transistor T3 is turned on.
  • the connection between the voltage source and the primary winding 14 of the ignition coil 16 is now via the transistor T3, wherein the connection via the resistor R3 and the transistor T2 due to the high resistance of the resistor R3 is negligible.
  • the transistor T2 can be simultaneously blocked even when the transistor T3 is turned on.
  • the transistors T2 and T3 are turned off. Any necessary bracketing is taken over by the transistor T3 in a manner not shown.
  • the frequency of this oscillation of the voltage curve U CE T3 is independent of the supply voltage, ie the voltage of the motor vehicle battery.
  • the course of the voltages shown in FIG. 2 would result if the transistor T3 were permanently blocked.
  • Due to the delayed switching on of the transistor T3 via the timer 22 -As with reference to FIG 1 concernedt- at a time t 1 is obtained the verdeutlichten in Figure 3 voltage or current waveform.
  • the time t 1 lies in the phase of the decaying primary voltage at a time of approximately 30 ⁇ s after the time t 0 . Since the transistor T3 is turned on here, subsequently the voltage U CE T2 drops almost to 0, since due to the high-resistance resistor R3 practically no current flows through the transistor T2 and the resistor R3.

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)

Claims (9)

  1. Dispositif de circuit d'un étage final d'allumage, en particulier pour un circuit d'allumage d'un véhicule automobile, comprenant un moyen de commutation (T3) qui branche et coupe le courant à travers l'enroulement primaire (14) d'une bobine d'allumage (16), et un circuit d'excitation (10) pour le moyen de commutation (T3), le circuit d'excitation (10) déterminant un branchement en deux étapes du courant à travers l'enroulement primaire (14) de la bobine d'allumage (16),
    caractérisé en ce qu'
    une dérivation parallèle à grande valeur ohmique (R3, T2) pouvant être commutée, shunte le moyen de commutation (T3) et conduit un courant limité, le circuit d'excitation (10) bloque le moyen de commutation (T3) pour le courant à travers l'enroulement primaire, à l'instant de branchement (t0) prédéterminé de l'extérieur du circuit d'excitation (10) et, en même temps, la dérivation parallèle (R3, T2) est enclenchée et, à un instant de commutation défini (t1) après l'instant de branchement (t0), le blocage du moyen de commutation (T3) est de nouveau neutralisé.
  2. Dispositif de circuit selon la revendication 1,
    caractérisé en ce que
    le blocage du moyen de commutation (T3) est déterminé par un transistor auxiliaire (T2) comprenant un temporisateur de commande (22), le temporisateur (22) étant activé simultanément à l'instant d'établissement (t0) et tombant à l'instant de comutation défini (t1).
  3. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce qu'
    à l'instant de branchement (t0), le moyen de commutation (T3) est shunté par une résistance (R3) à haute valeur ohmique.
  4. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce que
    le moyen de commutation est un transistor de commutation de Darlington.
  5. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce que
    le transistor auxiliaire (T1) destiné au blocage du moyen de commutation (T3) shunte le circuit base-émetteur du transistor de commutation de Darlington.
  6. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce que
    l'instant de commutation (t1) se trouve à l'intérieur de la phase de décroissance de la tension primaire induite dans la bobine d'allumage (16) lors de la mise en circuit de la dérivation parallèle à haute valeur ohmique (R3, T2).
  7. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce que
    l'instant de commutation (t1) se trouve à peu près 30 µs après l'instant de branchement (t0).
  8. Dispositif de circuit selon une des revendications précédentes,
    caractérisé en ce que
    la dérivation à haute valeur ohmique (R3, T2) parallèle au moyen de commutation (T3) est formée par un transistor (T2) qu'on fait travailler en dehors de la saturation.
  9. Dispositif de circuit selon la revendication 4 ou selon une des revendications 5 à 8, dans la mesure où elles se rattachent à la revendication 4,
    caractérisé en ce que
    le branchement du courant à travers l'enroulement primaire (14) de la bobine d'allumage (16) du moyen de commutation (T3) en forme de transistor de commutation de Darlington s'effectue par détection de la décroissance de la tension au collecteur (C) du transistor de commutation de Darlington.
EP98912264A 1997-03-18 1998-02-18 Montage de circuit pour etage final d'allumage Expired - Lifetime EP0968368B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19711204A DE19711204C2 (de) 1997-03-18 1997-03-18 Schaltungsanordnung einer Zündendstufe
DE19711204 1997-03-18
PCT/DE1998/000474 WO1998041756A1 (fr) 1997-03-18 1998-02-18 Montage pour etage final d'allumage

Publications (2)

Publication Number Publication Date
EP0968368A1 EP0968368A1 (fr) 2000-01-05
EP0968368B1 true EP0968368B1 (fr) 2005-08-10

Family

ID=7823748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98912264A Expired - Lifetime EP0968368B1 (fr) 1997-03-18 1998-02-18 Montage de circuit pour etage final d'allumage

Country Status (7)

Country Link
US (1) US6107748A (fr)
EP (1) EP0968368B1 (fr)
JP (1) JP4124276B2 (fr)
KR (1) KR20000076322A (fr)
BR (1) BR9808338A (fr)
DE (2) DE19711204C2 (fr)
WO (1) WO1998041756A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20111669A1 (it) 2011-09-16 2013-03-17 St Microelectronics Srl Accensione graduale in un sistema di accensione di un motore a combustione
DE102014210746A1 (de) * 2014-06-05 2015-12-17 Robert Bosch Gmbh Zündsystem und Verfahren zum Verhindern einer Funkenentladung während des Einschaltvorgangs
JP6517088B2 (ja) * 2015-06-11 2019-05-22 日立オートモティブシステムズ阪神株式会社 内燃機関用点火装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046124A (en) * 1975-09-10 1977-09-06 Long Leslie T High performance ignition circuit
US4051827A (en) * 1976-01-12 1977-10-04 Motorola, Inc. Selective threshold ignition circuit
DE3120695A1 (de) * 1981-05-23 1982-12-09 Robert Bosch Gmbh, 7000 Stuttgart "schaltungsanordnung mit einem endtransistor zum ein- und ausschalten eines verbrauchers, insbesondere der primaerwicklung einer zu der zuendanlage einer brennkraftmaschine gehoerenden zuendspule"
DE3334833A1 (de) * 1983-09-27 1985-04-04 Telefunken electronic GmbH, 7100 Heilbronn Ansteuerschaltung fuer einen leistungstransistor
DE3615548A1 (de) * 1986-05-09 1987-11-12 Bosch Gmbh Robert Zuendanlage fuer brennkraftmaschinen
DD250156A1 (de) * 1986-06-25 1987-09-30 Hermsdorf Keramik Veb Schaltungsanordnung fuer verbrennungsmotoren
DE3839039A1 (de) * 1988-11-18 1990-05-23 Bosch Gmbh Robert Zuendendstufe einer transistor-zuendanlage
DE4009451C2 (de) * 1989-03-27 1995-02-16 Mitsubishi Electric Corp Zündvorrichtung für eine Brennkraftmaschine
IT1240136B (it) * 1990-03-19 1993-11-27 Marelli Autronica Sistema di accensione per un motore a combustione interna
JPH08270534A (ja) * 1995-03-31 1996-10-15 Mitsubishi Electric Corp 内燃機関用点火装置
DE19533637A1 (de) * 1995-09-12 1997-03-13 Bosch Gmbh Robert Zündendstufe
US5936830A (en) * 1996-01-29 1999-08-10 Lucas Industries Public Limited Co. Ignition exciter for a gas turbine engine and method of igniting a gas turbine engine
US5723916A (en) * 1996-05-17 1998-03-03 Delco Electronics Corporation Electrical load driving device including load current limiting circuitry
US5992401A (en) * 1997-09-10 1999-11-30 Outboard Marine Corporation Capacitive discharge ignition for an internal combustion engine

Also Published As

Publication number Publication date
KR20000076322A (ko) 2000-12-26
DE59812996D1 (de) 2005-09-15
WO1998041756A1 (fr) 1998-09-24
DE19711204C2 (de) 1999-01-14
DE19711204A1 (de) 1998-09-24
JP2001514720A (ja) 2001-09-11
US6107748A (en) 2000-08-22
EP0968368A1 (fr) 2000-01-05
BR9808338A (pt) 2000-05-16
JP4124276B2 (ja) 2008-07-23

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