EP0969204A2 - Procédé et dispositif pour la détermination de la tension de claquage de l'allumage d'un moteur à combustion interne - Google Patents

Procédé et dispositif pour la détermination de la tension de claquage de l'allumage d'un moteur à combustion interne Download PDF

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Publication number
EP0969204A2
EP0969204A2 EP99110438A EP99110438A EP0969204A2 EP 0969204 A2 EP0969204 A2 EP 0969204A2 EP 99110438 A EP99110438 A EP 99110438A EP 99110438 A EP99110438 A EP 99110438A EP 0969204 A2 EP0969204 A2 EP 0969204A2
Authority
EP
European Patent Office
Prior art keywords
voltage
breakdown
ignition
time
breakdown 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.)
Withdrawn
Application number
EP99110438A
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German (de)
English (en)
Other versions
EP0969204A3 (fr
Inventor
Heinz Baumberger
Ingo Gabriel
Peter Hohner
Hartung Wilstermann
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0969204A2 publication Critical patent/EP0969204A2/fr
Publication of EP0969204A3 publication Critical patent/EP0969204A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01T13/00—Sparking plugs
    • H01T13/58—Testing
    • H01T13/60—Testing of electrical properties
    • 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 according to the generic Features of claim 1 and a device according to the Generic features of claim 3.
  • DE 27 52 244 A1 describes a method and a device for checking electrical ignitions. For quick Checking the components in their operational position the time course of the voltage on the primary side and / or measured on the secondary side. Because of the time course the voltage is, for example, on the electrode gap or inferred about moisture in the distributor. One too fast Current drop shows that the electrodes are too far apart corresponding to an electrode erosion. A slow power drop on the other hand indicates an electrode gap that is too small. The The voltage profile in the secondary winding can also be caused by the Decay of the voltage in the primary winding can be measured.
  • DE 30 41 498 A1 and DE 40 37 071 A1 propose to detect the breakthrough time on ignition and depending on the condition of the ignition system.
  • DE 30 41 498 A1 becomes a negative one at the time of ignition Flank generated by a coupling capacitor and a Comparator resets a flip-flop. The comparator is used for Detection of this negative impulse. The decoupling of the ignition signal takes place on the primary side.
  • DE 40 37 071 A1 is the period of time between the rise in primary voltage the ignition coil and the drop in current in one Limiter circuit passes, inferred about the quality of the ignition system. To do this, the time of the rise of the primary voltage the ignition coil by turning off the switching transistor in the area of the ignition timing, and the Time of current decrease in the limiter circuit, that is caused by the sparkover at the time of ignition, determined.
  • DE 43 03 030 A1 discloses one method and one Device for monitoring the ignition behavior in capacitance-discharge ignition systems. This is used to ignite one Spark plug required ignition voltage from the duration of the current flow determined by the ignition coil primary winding. Since the coil coupling is low in AC ignitions, is a qualitative measurement of the current and / or voltage change not possible on the primary side of the ignition. With AC ignitions is therefore a direct measurement the breakdown voltage on the secondary side is a high voltage probe used. But a high voltage probe is expensive.
  • the object of the invention is therefore a cheap and simple Method for determining the breakdown voltage and thus for Provide engine diagnosis and to check the ignition system.
  • a major advantage of these designs is that that a voltage measurement is only carried out qualitatively.
  • the Breakdown voltage value is not measured directly, but due to the voltage measurement, only the breakthrough time certainly.
  • the Breakdown voltage determined more easily and precisely. This simplifies it any kind of checking the ignition system or the engine diagnosis, where the breakdown voltage is used as an indicator becomes. Because of their accuracy is qualitative Measurement of voltage or current is an advantage. Therefore the breakthrough time to breakthrough is determined. Because at the time of ignition the voltage at the electrodes of the spark plug breaks down and a large current flows, it comes at the time of ignition to a sharp drop in the voltage across the spark plug.
  • determining the breakdown voltage is both spark plug diagnosis in the cold test and in operation of the engine possible.
  • the engine tightness in the Cold test to be checked.
  • the combustion chamber pressure during cold test and engine operation The determination of the electrode distances and the testing of the spark plugs on insulator break with the determination of the breakdown voltage also possible.
  • the voltage is stepped up on the secondary side 2 by means of the transformer 4 to the breakdown voltage U z of the spark plug 3.
  • the spark plug 3 breaks through and the ignition current I z flows (see also FIG. 3).
  • the time t 0 from the zero crossing of the voltage until the breakdown time t 1 is reached .
  • a current or voltage measuring device 5 on the low voltage side on the secondary side 2 of the ignition.
  • Another possibility is, for example, a current or voltage measurement at measuring point MPC on the primary side 1. At the time of the breakdown, there is an abrupt change in voltage. This change in voltage and thus the time t 1 can be clearly detected.
  • the voltage measurement does not provide the exact breakdown voltage U z .
  • the voltage drop across resistor R 1 can be measured at measuring point MPA.
  • Another way of detecting the breakthrough time t 1 is the measurement during the breakthrough at the measuring point MPB.
  • a large current flows during the breakdown, which can be measured at the measuring point MPB.
  • the Zener diode Z 1 and Z 2 breaks down and a current flows through the resistor R 2 .
  • the voltage drop across resistor R 2 is measured. Since the exemplary embodiment is an AC voltage ignition, the voltage drop across the resistor R 2 is limited by two Zener diodes Z 1 for the positive and Z 2 for the negative half-wave of the AC voltage. In the case of DC voltage ignitions, a Zener diode is sufficient to limit the voltage across a resistor and thus to detect the breakdown time t 1 during the ignition.
  • Fig. 3 shows the characteristics of the spark plug 3 with and without a breakthrough, only the positive half-wave is shown for simplicity. With AC ignitions, a breakdown is also possible in the negative half-wave.
  • the upper diagram shows the time-dependent voltage characteristic.
  • the lower diagram shows the time-dependent current characteristic.
  • the dashed diagram above shows the characteristic curve without breakthrough.
  • the characteristic without breakthrough is obtained empirically by measurement or theoretically by calculation without a spark plug. This characteristic curve is used to determine the function value of the ignition voltage U z .
  • the zero crossing of the voltage U is defined as the function value U 0 / t 0
  • the breakdown is defined as the function value U z / t 1 .
  • the dark dashed line shows the voltage curve in the upper diagram and the current curve on the spark plug with breakdown in the lower diagram.
  • the voltage rises steadily from t 0 until the spark plug 3 breaks through at the breakdown instant t 1 .
  • the ignition current I z flows .
  • the breakdown voltage U z can be determined by comparison with the time-dependent voltage characteristic without breakdown.

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)
EP99110438A 1998-07-02 1999-05-29 Procédé et dispositif pour la détermination de la tension de claquage de l'allumage d'un moteur à combustion interne Withdrawn EP0969204A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19829583A DE19829583C1 (de) 1998-07-02 1998-07-02 Verfahren und Vorrichtung zur Bestimmung der Durchbruchspannung bei der Zündung einer Brennkraftmaschine
DE19829583 1998-07-02

Publications (2)

Publication Number Publication Date
EP0969204A2 true EP0969204A2 (fr) 2000-01-05
EP0969204A3 EP0969204A3 (fr) 2002-06-12

Family

ID=7872761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110438A Withdrawn EP0969204A3 (fr) 1998-07-02 1999-05-29 Procédé et dispositif pour la détermination de la tension de claquage de l'allumage d'un moteur à combustion interne

Country Status (3)

Country Link
US (1) US6357428B1 (fr)
EP (1) EP0969204A3 (fr)
DE (1) DE19829583C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892408A1 (fr) 2006-08-21 2008-02-27 Siemens Aktiengesellschaft Injecteur, gobelet pour l'alimentation en carburant et support

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10356448A1 (de) * 2003-12-03 2005-07-07 Volkswagen Ag Zündspulentester
DE102004056844A1 (de) * 2004-11-25 2006-06-01 Daimlerchrysler Ag Schnelle Vielfachfunkenzündung
US10233891B1 (en) * 2017-10-23 2019-03-19 Caterpillar Inc. Controller for spark plug of engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752244A1 (de) 1977-11-23 1979-06-07 Baum Elektrophysik Gmbh Verfahren und vorrichtung zum pruefen elektrischer zuendanlagen von otto-motoren
DE3041498A1 (de) 1980-11-04 1982-06-09 Robert Bosch Gmbh, 7000 Stuttgart Mess- und regeleinrichtung fuer den zuendverzug bei zuendanlagen von brennkraftmaschinen
DE4037071A1 (de) 1989-11-23 1991-05-29 Telefunken Electronic Gmbh Verfahren und vorrichtung zur bestimmung der guete einer zuendanlage fuer verbrennungskraftmaschinen
DE4303030A1 (fr) 1992-02-28 1993-09-02 Coltec Ind Inc

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1208855B (it) * 1987-03-02 1989-07-10 Marelli Autronica Sistema di accensione ad energia di scintilla variabile per motori acombustione interna particolarmente per autoveicoli
US4846129A (en) * 1988-02-09 1989-07-11 Chrysler Motors Corporation Ignition system improvements for internal combustion engines
US4933861A (en) * 1988-10-03 1990-06-12 Ford Motor Company Ignition system with feedback controlled dwell
US5370099A (en) * 1990-08-24 1994-12-06 Robert Bosch Gmbh Ignition system for internal combustion engines
FR2676506B1 (fr) 1991-05-15 1993-09-03 Siemens Automotive Sa Procede et dispositif de detection de rates d'allumage dans un cylindre de moteur a combustion interne et leur application.
US5513620A (en) * 1995-01-26 1996-05-07 Chrysler Corporation Ignition energy and breakdown voltage circuit and method
US5492007A (en) * 1995-01-30 1996-02-20 Chrysler Corporation Misfire detection in a spark ignition engine
US5606118A (en) 1995-09-05 1997-02-25 Ford Motor Company System and method for detecting misfire in an internal combustion engine
DE19605803A1 (de) * 1996-02-16 1997-08-21 Daug Deutsche Automobilgesells Schaltungsanordnung zur Ionenstrommessung
DE19652896B4 (de) 1996-12-19 2004-01-29 Vogt Electronic Aktiengesellschaft Vorrichtung und Verfahren zur Zylindererkennung in einer Brennkraftmaschine
JP3330838B2 (ja) * 1997-02-18 2002-09-30 三菱電機株式会社 内燃機関の燃焼状態検出装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752244A1 (de) 1977-11-23 1979-06-07 Baum Elektrophysik Gmbh Verfahren und vorrichtung zum pruefen elektrischer zuendanlagen von otto-motoren
DE3041498A1 (de) 1980-11-04 1982-06-09 Robert Bosch Gmbh, 7000 Stuttgart Mess- und regeleinrichtung fuer den zuendverzug bei zuendanlagen von brennkraftmaschinen
DE4037071A1 (de) 1989-11-23 1991-05-29 Telefunken Electronic Gmbh Verfahren und vorrichtung zur bestimmung der guete einer zuendanlage fuer verbrennungskraftmaschinen
DE4303030A1 (fr) 1992-02-28 1993-09-02 Coltec Ind Inc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892408A1 (fr) 2006-08-21 2008-02-27 Siemens Aktiengesellschaft Injecteur, gobelet pour l'alimentation en carburant et support

Also Published As

Publication number Publication date
DE19829583C1 (de) 1999-10-07
US6357428B1 (en) 2002-03-19
EP0969204A3 (fr) 2002-06-12

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