EP0502549B1 - Dispositif de surveillance de l'étincelle dans une installation d'allumage - Google Patents

Dispositif de surveillance de l'étincelle dans une installation d'allumage Download PDF

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Publication number
EP0502549B1
EP0502549B1 EP92103903A EP92103903A EP0502549B1 EP 0502549 B1 EP0502549 B1 EP 0502549B1 EP 92103903 A EP92103903 A EP 92103903A EP 92103903 A EP92103903 A EP 92103903A EP 0502549 B1 EP0502549 B1 EP 0502549B1
Authority
EP
European Patent Office
Prior art keywords
voltage
spark
storage choke
circuit
circuit arrangement
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
EP92103903A
Other languages
German (de)
English (en)
Other versions
EP0502549A2 (fr
EP0502549A3 (en
Inventor
Odd Karsten Peters
Dieter Teutsch
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.)
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
Original Assignee
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
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 BERU Ruprecht GmbH and Co KG, Beru Werk Albert Ruprecht GmbH and Co KG filed Critical BERU Ruprecht GmbH and Co KG
Publication of EP0502549A2 publication Critical patent/EP0502549A2/fr
Publication of EP0502549A3 publication Critical patent/EP0502549A3/de
Application granted granted Critical
Publication of EP0502549B1 publication Critical patent/EP0502549B1/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
    • 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
    • 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
    • F02P11/00—Safety means for electric spark ignition, not otherwise provided for
    • F02P11/06—Indicating unsafe conditions
    • 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
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current

Definitions

  • the invention relates to a method for ignition monitoring of an ignition system with a storage choke, on which the electrical energy required to generate an ignition spark is stored, and an ignition coil, to which this energy is transmitted to generate the ignition spark, and a device for ignition monitoring of an ignition system with a Storage choke on which the supply voltage is connected and an ignition coil connected in parallel.
  • EP-A-0 344 349 it is also known to determine the absence of the ignition spark, that is to say a misfire of an ignition system, in that the voltage induced in the primary winding of the ignition coil during the generation of the ignition spark is detected and with a reference voltage of a certain level and a certain duration is compared, which is representative of a faultless ignition process.
  • the object underlying the invention is therefore to develop a method and an apparatus, i.e. to create a circuit arrangement of the type mentioned at the beginning with which a clear detection is possible as to whether an ignition spark is present between the electrodes of the spark plugs supplied by the ignition system or whether a short circuit or shunt has occurred or the ignition coil is not loaded on the high voltage side, which is e.g. the case is when the ignition cable has fallen off.
  • This object is achieved in the method according to the invention in that the voltage difference between the excess voltage at the storage inductor and the supply voltage and the voltage difference across the storage inductor are detected and the absence of at least one of these voltage difference signals is evaluated as an indication of a fault in the ignition system.
  • the circuit arrangement according to the invention stands out by three voltage handles for the supply voltage and for the two voltages on the storage inductor, which supply corresponding voltage signals, and an evaluation circuit which, in the absence of at least one of these voltage signals, generates an error signal.
  • the design according to the invention furthermore offers the possibility of measuring the spark life, the circuit arrangement according to the invention being able to be produced at low cost and requiring little space.
  • the ignition system shown in Fig. 1 consists of a storage inductor L0, to which the supply voltage + UB is located and in which energy is stored via a transistor T0, which is switched through by a control when closing a switch S0 between the storage inductor L0 and an ignition coil ZSP0 connected in parallel to it, the ignition coil ZSP0 is transmitted.
  • the secondary winding of the ignition coil ZSP0 is connected in the usual way to the spark gap of a spark plug.
  • voltage signals are tapped at the storage choke L0. These voltage signals are the voltages U20 and U21 on both sides of the storage inductor L0, and additionally the supply voltage UB, which are shown in FIGS. 3b and 4c.
  • the voltages U20 and U21 are the voltage increase at the connection of the storage inductor L0, to which the supply voltage + UB is connected, and the voltage increase at the collector of the switching transistor T0.
  • a diode D0 which only allows a current in the direction of the storage inductor L0, and two capacitors C0, C1 are connected, the other connection of which is connected to ground.
  • the voltage taps for the voltage + U21, + U20 and the supply voltage + UB are direct or via resistors R1, R2 (+ U21, + UB) and a Zener diode ZD1 (+ UB ) connected to a circuit, preferably in the form of two series-connected optocouplers Opt0 and Opt1, with a logical AND function, which logically combines the voltage differences U20-UB and U21-U20.
  • a transistor T1 which serves as a switch, is at its base due to the voltage drop controlled at the resistor R3 and is connected with its collector-emitter path, for example via a resistor R6, between the output of the optocoupler Opt0 and ground.
  • a resistor R5, which is connected upstream of the base of the transistor T1, serves to limit the current.
  • a voltage UA which is representative of the state of the spark gap of the ignition system, is tapped at the collector of the transistor T1 via the resistor R6. If this voltage UA has a high potential, then there is an error.
  • the circuit arrangement according to the invention with the structure shown in detail in FIG. 2 operates in the following way:
  • the diode D0 is provided, which prevents the voltage surge + U20 from being short-circuited via the mains when the storage inductor L0 is discharged.
  • the capacitors C0 and C1 integrate the pulse occurring when the storage choke L0 is discharged.
  • the voltage rise + U20 at capacitor C1 provides a direct statement about the load on the ignition coil ZSP0 (shunt of the ignition electrodes).
  • the voltage rise + U21 at the collector of transistor T0 is also used for the evaluation.
  • the corresponding voltage difference U21-U20 is present over a period of time that corresponds to the spark life at the electrodes.
  • the two voltage difference signals U21-U20 and U20-UB are linked via the outputs of the optocoupling Opt0, Opt1 according to the logical AND function.
  • the two optocouplers Opt0, Opt1 therefore form an AND gate.
  • Resistor R3 no voltage drop. As a result, the voltage UA tapped off at the transistor T1 is at a high value. Since the voltage across the resistor R3 is only present as long as a spark is present between the ignition electrodes, this signal can be used to measure the burning duration, which also makes it possible to make a statement about the condition of the electrodes.
  • the integration element consisting of capacitor C2 and resistor R4 is provided. As long as periodic ignition takes place, the transistor T1 conducts, so that the output voltage UA is at a low value.
  • This output voltage UA of the transistor T1 can therefore be used to make a direct and unambiguous statement about the load on the ignition coil and whether the ignition coil is short-circuited or not.
  • the circuit arrangement according to the invention makes this possible with a simple, inexpensive construction of simple components with a simple connection (no high voltage), and in addition to the clear statement as to whether a spark is present between the electrodes, there is also the possibility of controlling the erosion of the electrodes, since a burn duration measurement is possible.

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  • 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 (8)

  1. Procédé de surveillance de l'allumage pour une installation d'allumage comprenant une bobine d'accumulation sur laquelle s'accumule l'énergie électrique nécessaire pour la production d'une étincelle d'allumage, et une bobine d'allumage, à laquelle cette énergie est transmise pour la production de l'étincelle d'allumage, caractérisé en ce que la différence de tension entre la surélévation de tension au niveau de la bobine d'accumulation et la tension d'alimentation, ainsi que la différence de tension aux bornes de la bobine d'accumulation sont captées et l'absence d'au moins un de ces signaux de différence de tension est interprétée comme une indication d'un défaut de l'installation d'allumage.
  2. Procédé selon la revendication 1, caractérisé en ce que les deux signaux de tension sont combinés en une fonction ET logique.
  3. Circuit pour la surveillance de l'allumage d'une installation d'allumage comprenant une bobine d'accumulation (L0) à laquelle est appliquée la tension d'alimentation (UB), et une bobine d'allumage (ZSP0) connectée en parallèle à la première, caractérisé par trois prises de tension pour la tension d'alimentation (UB) ainsi que pour les deux tensions (U20, U21) sur la bobine d'accumulation (L0), qui fournissent les signaux de tensions correspondants, et un circuit d'exploitation qui produit un signal de défaut en cas d'absence d'au moins un de ces signaux de tension.
  4. Circuit selon la revendication 3, caractérisé en ce qu'entre la connexion d'alimentation de l'installation d'allumage et la bobine d'accumulation (L0), est connectée une diode (D0) qui ne laisse passer le courant qu'en direction de la bobine d'accumulation (L0).
  5. Circuit selon la revendication 4, caractérisé en ce que deux condensateurs (C0, C1) sont interposés entre la masse et un point situé entre la diode (D0) et la bobine d'accumulation (L0).
  6. Circuit selon une des revendications 3 à 5, caractérisé en ce que le circuit d'exploitation est constitué par un dispositif de commande à fonction ET logique, auquel sont appliqués les signaux de tension des prises de tension et par un circuit de surveillance qui répond au signal de sortie du dispositif de commande à fonction ET logique et produit éventuellement le signal de défaut.
  7. Circuit selon la revendication 6, caractérisé en ce que le circuit à fonction ET logique est constitué par deux optocoupleurs (Opt0, Opt1) connectés en série.
  8. Circuit selon la revendication 7, caractérisé en ce que le circuit de surveillance est constitué par une résistance (R3) qui est reliée à la sortie d'un optocoupleur (Opt1) auquel est appliquée la différence de tension entre la surélévation de tension sur la bobine d'accumulation (L0) et la tension d'alimentation, par un condensateur (C2) auquel est appliquée, à travers une diode (D1) la chute de tension sur la résistance (R3), et par un transistor (T1) à la base duquel est appliquée la tension du condensateur (C2) qui est relié par son collecteur à la sortie de l'autre optocoupleur (Opt0) auquel la différence de tension est appliquée par l'intermédiaire de la bobine d'accumulation (L0) et qui est connecté à la masse par son collecteur, la tension entre le collecteur du transistor (T1) et la masse étant prise en qualité de tension de surveillance qui fournit éventuellement le signal d'erreur.
EP92103903A 1991-03-07 1992-03-06 Dispositif de surveillance de l'étincelle dans une installation d'allumage Expired - Lifetime EP0502549B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4107335A DE4107335A1 (de) 1991-03-07 1991-03-07 Verfahren und vorrichtung zur zuendueberwachung einer zuendanlage
DE4107335 1991-03-07

Publications (3)

Publication Number Publication Date
EP0502549A2 EP0502549A2 (fr) 1992-09-09
EP0502549A3 EP0502549A3 (en) 1993-12-01
EP0502549B1 true EP0502549B1 (fr) 1995-11-02

Family

ID=6426704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103903A Expired - Lifetime EP0502549B1 (fr) 1991-03-07 1992-03-06 Dispositif de surveillance de l'étincelle dans une installation d'allumage

Country Status (3)

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EP (1) EP0502549B1 (fr)
DE (2) DE4107335A1 (fr)
ES (1) ES2079088T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324863C2 (de) * 1993-07-23 1997-04-10 Beru Werk Ruprecht Gmbh Co A Schaltungsanordnung zur Flammerkennung
DE69533391D1 (de) * 1995-04-28 2004-09-23 St Microelectronics Srl Schaltung zur Erkennung einer Überspannung an einem elektrischen Verbraucher
GB9523432D0 (en) * 1995-11-15 1996-01-17 British Gas Plc Internal combustion engine
GB2325988A (en) * 1997-06-02 1998-12-09 Ford Motor Co Ignition coil monitoring arrangement
DE102015210636A1 (de) * 2015-06-10 2016-12-15 Rolls-Royce Deutschland Ltd & Co Kg Messvorrichtung für eine Strömungsmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445723A (en) * 1966-12-01 1969-05-20 Ford Motor Co Ignition system applying induced voltage to the coil primary
FR2331032A1 (fr) * 1975-11-05 1977-06-03 Peugeot Detecteur photoelectrique de fluctuations de courant dans un conducteur electrique
US4117807A (en) * 1977-02-02 1978-10-03 The Bendix Corporation Fuel injection cut off means for over temperature protection of exhaust treatment device
FR2451586A1 (fr) * 1979-03-15 1980-10-10 Renault Boitier de detection de pannes dans un circuit d'allumage electronique
US4490799A (en) * 1981-12-04 1984-12-25 Bear Automotive Service Equipment Company Ignition coil test apparatus
DE3907616A1 (de) * 1989-03-09 1990-09-20 Bosch Gmbh Robert Schaltungsanordnung zur messung der primaerspannung einer zuendspule
DE3909906A1 (de) * 1989-03-25 1990-09-27 Bosch Gmbh Robert Schaltungsanordnung zur ueberwachung einer hochspannungszuendanlage

Also Published As

Publication number Publication date
EP0502549A2 (fr) 1992-09-09
ES2079088T3 (es) 1996-01-01
DE4107335A1 (de) 1992-09-10
DE59204164D1 (de) 1995-12-07
EP0502549A3 (en) 1993-12-01

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