EP0967391B1 - Procédé et dispositif pour surveiller la combustion dans le cylindre d'un moteur à combustion interne - Google Patents

Procédé et dispositif pour surveiller la combustion dans le cylindre d'un moteur à combustion interne Download PDF

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Publication number
EP0967391B1
EP0967391B1 EP99111230A EP99111230A EP0967391B1 EP 0967391 B1 EP0967391 B1 EP 0967391B1 EP 99111230 A EP99111230 A EP 99111230A EP 99111230 A EP99111230 A EP 99111230A EP 0967391 B1 EP0967391 B1 EP 0967391B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
high frequency
combustion
glow plug
heater rod
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
EP99111230A
Other languages
German (de)
English (en)
Other versions
EP0967391A2 (fr
EP0967391A3 (fr
Inventor
Bruno Dr. Lindl
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.)
BorgWarner Ludwigsburg GmbH
Original Assignee
Beru 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 Beru AG filed Critical Beru AG
Publication of EP0967391A2 publication Critical patent/EP0967391A2/fr
Publication of EP0967391A3 publication Critical patent/EP0967391A3/fr
Application granted granted Critical
Publication of EP0967391B1 publication Critical patent/EP0967391B1/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
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F02P19/028—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs the glow plug being combined with or used as a sensor
    • 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
    • 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
    • F02P23/00—Other ignition
    • F02P23/04—Other physical ignition means, e.g. using laser rays
    • F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/021—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using an ionic current sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • F02D35/024—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure using an estimation
    • 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
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
    • 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
    • F02P2017/125—Measuring ionisation of combustion gas, e.g. by using ignition circuits

Definitions

  • the invention relates to a method and a device to monitor the combustion processes in the combustion chamber an internal combustion engine, in particular a diesel engine, at least one glow plug in the cylinder head is arranged with heating element.
  • EP-A-0 834 652 already describes a method and a device for monitoring the combustion processes in the Combustion chamber of an internal combustion engine known, in the Cylinder head at least one glow plug with heating element is arranged, in which the heating element of the glow plug against the cylinder head with an alternating voltage is applied and the ion current, which then between the heating rod area projecting into the combustion chamber and of the cylinder head wall on the combustion chamber and is evaluated.
  • Electrodes an ion current sensor namely the electrodes a spark plug with a high-frequency AC voltage act upon the accuracy when capturing the To improve ion current.
  • the invention is intended to provide a method and a Device of the type mentioned are created with which the combustion processes in the combustion chamber one Internal combustion engine can be monitored in a simple manner without significant structural changes to the Machine must be made.
  • the device according to the invention measures the ion current and evaluated, which is between the heating rod surface the heating element of the glow plug and the combustion chamber surface trains and is a measure of the combustion processes.
  • the im Cylinder head already used glow plug and the ion current modulation occurring at the glow plug is Signal to monitor the combustion processes, especially to determine the combustion chamber pressure, evaluated.
  • the cylinder head is 1 a glow plug with heating element 2 is arranged in a diesel engine.
  • the one arranged in the heating element 2 Filament supplied by a battery 6 with a direct current.
  • a High-frequency generator 4 is provided, which is a high-frequency AC voltage generated on the heating element 2 of the glow plug lies.
  • a switch 5 is preferably provided, the two Has switch positions in which he either the battery 6 with the heating element 2 of the glow plug for glow operation or the high-frequency generator 4 with the heating element 2 the glow plug for combustion monitoring operation, in particular for measuring the combustion chamber pressure.
  • a demodulator, comparator and evaluation circuit 3 is used to that coming from heating element 2 in monitoring mode Evaluate signal. For this purpose, this circuit is 3rd both with the heating element 2 and the high-frequency generator 4 connected. At its output 7 it delivers a signal that for the parameters of the combustion processes in the combustion chamber of the Machine representative, especially proportional to combustion chamber pressure, is.
  • the arrangement shown in Fig. 1 works in the following way:
  • the modulating supply frequency can be chosen in this way be that as a microstructure on the compression / Decompression wave appears, with the frequency value of the corresponds to the required resolution of the pressure wave.
  • the temporal Change in amplitude and phase of the ion current function is proportional to the pressure change in the combustion chamber over time. Because of the differentiation according to time, all are the signal current influencing parasitic impedances, such as contact resistances at electrical connection points or Shunts due to soot or coal formation between the heating element 2 and cylinder head 1 suppressed. The pressure change over time is therefore proportional to the temporal current signal.
  • a switch 5 is provided, via which between the Supply of heating element 2 with current from battery 6 or with a high-frequency AC voltage from the high-frequency generator 4 can be switched, it is also possible the high frequency AC voltage of the glow voltage of overlay the battery 6. To do this, however, appropriate Interference suppression measures are taken in order to to avoid disruptive influences in the rest of the electrical system.
  • FIG. 2 A particularly preferred form of training is shown in FIG. 2 shown in the drawing.
  • the heating element 2 is electrically insulated via insulation 9 installed the glow plug body 10 and lies the glow voltage from the battery 6 on the glow tube 8 of the heating element 2.
  • the im Glow tube 8 is arranged heating coil with its combustion chamber side End connected to the glow tube 8 and lies with their other end in mass.
  • the heating element 2 is particularly mounted and is galvanically isolated in the glow plug body 10 the glow plug body 10 with its external thread in the cylinder head 1 screwed. It is therefore at ground potential.
  • the glow tube 8 is defined with an alternating voltage Amplitude and frequency applied by the high-frequency generator 4, this in turn forms between the ground potential located cylinder head wall on the combustion chamber side and the one with high-frequency AC voltage Glow tube 8 an ion current 11, the current function as Parameters include the combustion chamber pressure.
  • the embodiment shown in Fig. 2 has the special advantage that in the circuit shown there the glow resistance of the filament of the heating element 2 as Termination resistance of the resonant circuit acts.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)
  • Measuring Fluid Pressure (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (7)

  1. , Procédé de surveillance des processus de combustion dans la chambre de combustion d'un moteur à combustion interne dans la tête de cylindre de laquelle se trouve au moins une bougie de préchauffage avec un thermoplongeur, caractérisé en ce que le thermoplongeur de la bougie de préchauffage est alimenté, par rapport à la tête de cylindre, avec une tension à haute fréquence, et le courant ionique qui apparaít ainsi entre la partie du thermoplongeur dépassant dans la chambre de combustion et la paroi de la tête de cylindre située du côté de la chambre de combustion est mesuré et donc analysé, et en ce qu'on compare la tension à haute fréquence appliquée au thermoplongeur de la bougie de préchauffage avec le signal modulé par le courant ionique provenant du thermoplongeur, en ce qui concerne l'amplitude et la phase.
  2. Procédé selon la revendication 1, caractérisé en ce que, comme paramètre des processus de combustion, la pression dans la chambre de combustion est surveillée et le courant ionique mesuré est utilisé comme un signal proportionnel à al pression de la chambre de combustion.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on peut commuter entre le fonctionnement normal de la bougie de préchauffage et le fonctionnement de surveillance avec une tension à haute fréquence.
  4. Dispositif de surveillance des processus de combustion dans la chambre de combustion d'un moteur à combustion interne pour la réalisation du procédé selon la revendication 1, caractérisé par un générateur de haute fréquence (4) dont la tension de sortie est appliquée au thermoplongeur (2) de la bougie de préchauffage, et un circuit d'analyse (3) branché entre le thermoplongeur (2) de la bougie de préchauffage et le générateur de haute fréquence (4).
  5. Dispositif selon la revendication 4, caractérisé par un interrupteur (5) à deux positions, qui, selon la position, applique la tension d'une batterie (6) ou la tension à haute fréquence du générateur à haute fréquence (4) au thermoplongeur (2).
  6. Dispositif selon la revendication 4, caractérisé en ce que la tension de sortie du générateur à haute fréquence est superposé à la tension de la batterie appliquée au thermoplongeur.
  7. Dispositif selon la revendication 4, 5 ou 6, caractérisé en ce que le thermoplongeur (2) de la bougie de préchauffage est isolé électriquement dans la tête du cylindre (1), la tension à haute fréquence est appliquée au tube incandescent (8) de la bougie de préchauffage et le filament de la bougie de préchauffage est reliée d'un côté au tube incandescent (8) et de l'autre côté à la masse.
EP99111230A 1998-06-26 1999-06-09 Procédé et dispositif pour surveiller la combustion dans le cylindre d'un moteur à combustion interne Expired - Lifetime EP0967391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828595 1998-06-26
DE19828595A DE19828595C2 (de) 1998-06-26 1998-06-26 Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge im Brennraum einer Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0967391A2 EP0967391A2 (fr) 1999-12-29
EP0967391A3 EP0967391A3 (fr) 2002-01-23
EP0967391B1 true EP0967391B1 (fr) 2004-09-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111230A Expired - Lifetime EP0967391B1 (fr) 1998-06-26 1999-06-09 Procédé et dispositif pour surveiller la combustion dans le cylindre d'un moteur à combustion interne

Country Status (4)

Country Link
EP (1) EP0967391B1 (fr)
AT (1) ATE275697T1 (fr)
DE (2) DE19828595C2 (fr)
ES (1) ES2224496T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838223C2 (de) * 1998-08-22 2003-02-06 Daimler Chrysler Ag Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine
DE10011614A1 (de) * 2000-03-10 2001-09-13 Delphi Tech Inc Verfahren zum Bestimmen des Beginns einer Verbrennung im Zylinder eines Verbrennungsmotors
DE10015277B4 (de) * 2000-03-28 2009-01-08 Infineon Technologies Ag Vorrichtung zur Erzeugung eines Ionenstroms im Verbrennungsraum eines Dieselmotors sowie eine Glühkerze
JP3894442B2 (ja) * 2003-05-14 2007-03-22 三菱電機株式会社 内燃機関制御装置
DE102004005537B3 (de) * 2004-02-04 2005-09-01 Beru Ag Verfahren zum Analysieren des Zustandes der Verbrennung im Brennraum einer Brennkraftmaschine
DE102005005280B4 (de) * 2005-02-04 2009-09-24 Continental Automotive Gmbh Vorrichtung zum Erfassen des Drucks in einem Brennraum einer Brennkraftmaschine
FR2878314A1 (fr) * 2005-05-19 2006-05-26 Siemens Vdo Automotive Sas Equipement, notamment bougie pour moteur a combustion interne a capteur integre et cablage unique, et vehicule utilisant cet equipement
DE102010011044B4 (de) * 2010-03-11 2012-12-27 Borgwarner Beru Systems Gmbh Verfahren zum Regeln einer Glühkerze

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734022B1 (fr) * 1995-05-10 1998-06-26 Nippon Soken Appareil de surveillance de la combustion dans un moteur a combustion interne
EP0834652B1 (fr) * 1996-04-10 2004-10-13 Denso Corporation Bougie de prechauffage, son procede de fabrication, et detecteur de courant ionique
DE19614288C1 (de) * 1996-04-11 1997-08-07 Telefunken Microelectron Schaltungsanordnung zur Ionenstrommessung im Verbrennungsraum einer Brennkraftmaschine und zur Wechselstromzündung der Brennkraftmaschine

Also Published As

Publication number Publication date
DE19828595C2 (de) 2002-09-26
DE19828595A1 (de) 1999-12-30
EP0967391A2 (fr) 1999-12-29
EP0967391A3 (fr) 2002-01-23
DE59910432D1 (de) 2004-10-14
ES2224496T3 (es) 2005-03-01
ATE275697T1 (de) 2004-09-15

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