EP1056936B1 - Procede d'autonettoyage de bougies d'allumage en mode de charge stratifiee - Google Patents

Procede d'autonettoyage de bougies d'allumage en mode de charge stratifiee Download PDF

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Publication number
EP1056936B1
EP1056936B1 EP99964393A EP99964393A EP1056936B1 EP 1056936 B1 EP1056936 B1 EP 1056936B1 EP 99964393 A EP99964393 A EP 99964393A EP 99964393 A EP99964393 A EP 99964393A EP 1056936 B1 EP1056936 B1 EP 1056936B1
Authority
EP
European Patent Office
Prior art keywords
spark
internal combustion
combustion engine
burning
additional
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
EP99964393A
Other languages
German (de)
English (en)
Other versions
EP1056936A1 (fr
Inventor
Dietrich Trachte
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 EP1056936A1 publication Critical patent/EP1056936A1/fr
Application granted granted Critical
Publication of EP1056936B1 publication Critical patent/EP1056936B1/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
    • F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
    • 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
    • F02P9/007—Control of spark intensity, intensifying, lengthening, suppression by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition

Definitions

  • the present invention relates to a method for free burning of spark plugs for an internal combustion engine in which an injection is carried out in a shift operation becomes.
  • the problem underlying the present invention generally consists in that due to soot formation on the spark plugs during operation inevitably form shunts that worsen sparking.
  • a spark plug and an ignition coil is described, which by a electronic system can be controlled.
  • the ignition coil contains a primary winding and a secondary winding. In the primary winding is through the electronic system creates a magnetic field. The time during which the magnetic field is built up is called Ignition coil dwell time.
  • impurities such as carbon deposits on the To remove the spark plug by temporarily removing the spark plug with a charging time is operated that is longer than the charging time used in normal operation. Through the extended charging time increases the spark energy and spark duration, resulting in the Contamination of the spark plug is burned and removed. higher However, charging times can affect the life of the spark plug and the electronic one Reduce systems.
  • the inventive method for burning spark plugs with the features of claim 1 has the advantage over the known approaches that the phase of the gas exchange and possibly also the phase of the commencement of compression, in the combustion chamber with a non-ignitable gas content, e. G. Air, is filled, for Burning soot bridges and / or soot deposits on the spark plug are used can be.
  • a non-ignitable gas content e. G. Air
  • the idea on which the present invention is based exists in that during the phase to which the combustion chamber is filled with a non-ignitable gas content, e.g. the Intake phase, one or more additional sparks to burn free a relevant spark plug are ignited.
  • a non-ignitable gas content e.g. the Intake phase
  • the additional spark in the suction phase and preferably at the end of the suction phase, ignited.
  • This has the advantage that towards the end of the suction the pressure in the combustion chamber is low and sufficient Air filling is given, which causes little candle wear caused by the additional spark.
  • the Internal combustion engine uses an AC ignition system. This has the advantage that the energy supply time and the duration of the energy supply can be easily controlled since there is no charging time is required for the coil.
  • none Additional sparks ignited when the shunt resistance is above of a predetermined value. This increases the lifespan the candle, because the free burning also causes some candle wear.
  • the Internal combustion engine uses a gasoline direct injection.
  • the Internal combustion engine uses a diesel direct injection.
  • the internal combustion engine a gasoline direct injection, in which an injection is carried out in a shift operation, and an alternating current ignition system is used.
  • Fig. 1 shows a flow chart for explaining the embodiment of the method according to the present invention. This flowchart shows in a very simplified form a subroutine that e.g. in the control unit of the internal combustion engine is performed.
  • the shunt resistance R N of all spark plugs is measured continuously during operation. Based on the measurement result, the point in time, the number and the duration of energy supply of the additional spark or spark are controlled according to a scheme which is predetermined and stored in the control unit. In addition to the shunt resistance, such a scheme may include other parameters such as speed, load, age of the spark plugs, etc.
  • step S20 determines whether the shunt resistance of a spark plug in question is above a predetermined value R NS .
  • the additional spark to burn the spark plug in question is ignited at the end of the intake phase, if and as long this criterion is not met.
  • the ignition sparks cause combustion the soot deposits or soot bridges between the Electrodes or between the high voltage electrode and the Insulator reached.
  • step S30 or S40 the subroutine is ended.
  • any ignition system can be used. You could be even imagine an additional ignition system for the additional sparks to use, which however increase the effort would.
  • the additional spark at the end of the Intake phase was ignited, it can in principle become one any other point in time be ignited when the gas content the combustion chamber is not ignitable and the ignition system allows ignition, e.g. at the beginning of the compression phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Claims (8)

  1. Procédé d'auto-nettoyage de bougies d'allumage d'un moteur à combustion interne selon lequel on effectue une injection en mode stratifié,
    caractérisé en ce que
    pendant une phase en mode moteur pendant laquelle la chambre de combustion est remplie d'une charge de gaz non inflammable, on allume au moins une étincelle supplémentaire pour auto-nettoyer la bougie d'allumage concernée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    l'étincelle supplémentaire est déclenchée dans la phase d'admission et de préférence à la fin de cette phase d'admission et/ou au début de la phase de compression.
  3. Procédé selon les revendications 1 ou 2,
    caractérisé en ce qu'
    on utilise une installation d'allumage à courant alternatif pour le moteur à combustion interne.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on effectue une mesure d'au moins un paramètre du moteur et en fonction du résultat de la mesure on commande l'instant et/ou le nombre et/ou la durée de l'alimentation en énergie pour la ou les étincelle(s) supplémentaire(s).
  5. Procédé selon la revendication 4,
    caractérisé en ce qu'
    on effectue la mesure de la résistance de court-circuit de la bougie d'allumage.
  6. Procédé selon la revendication 5.
    caractérisé en ce qu'
    on ne déclenche aucune étincelle supplémentaire si la résistance de court-circuit est supérieure à une valeur prédéterminée.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on utilise une injection directe d'essence pour le moteur à combustion interne.
  8. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    on utilise une injection directe diesel pour le moteur à combustion interne.
EP99964393A 1998-12-22 1999-12-03 Procede d'autonettoyage de bougies d'allumage en mode de charge stratifiee Expired - Lifetime EP1056936B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19859311A DE19859311A1 (de) 1998-12-22 1998-12-22 Verfahren zum Freibrennen von Zündkerzen im Schichtbetrieb
DE19859311 1998-12-22
PCT/DE1999/003874 WO2000037782A1 (fr) 1998-12-22 1999-12-03 Procede d'autonettoyage de bougies d'allumage en mode de charge stratifiee

Publications (2)

Publication Number Publication Date
EP1056936A1 EP1056936A1 (fr) 2000-12-06
EP1056936B1 true EP1056936B1 (fr) 2003-03-26

Family

ID=7892152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99964393A Expired - Lifetime EP1056936B1 (fr) 1998-12-22 1999-12-03 Procede d'autonettoyage de bougies d'allumage en mode de charge stratifiee

Country Status (5)

Country Link
EP (1) EP1056936B1 (fr)
JP (1) JP2002533604A (fr)
KR (1) KR20010041047A (fr)
DE (2) DE19859311A1 (fr)
WO (1) WO2000037782A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4733670B2 (ja) * 2007-05-24 2011-07-27 日本特殊陶業株式会社 内燃機関用点火装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312920Y2 (fr) * 1974-10-08 1978-04-07
SE458141B (sv) * 1987-08-28 1989-02-27 Saab Scania Ab Foerfarande och arrangemang foer att foerbaettra startfoermaagan, foeretraedesvis efter ett misslyckat startfoersoek foer en foerbraenningsmotor
GB2255372A (en) * 1991-05-01 1992-11-04 Ford Motor Co I.c.engine spark ignition system
US5913302A (en) * 1997-09-19 1999-06-22 Brunswick Corporation Ignition coil dwell time control system

Also Published As

Publication number Publication date
DE59904729D1 (de) 2003-04-30
DE19859311A1 (de) 2000-06-29
JP2002533604A (ja) 2002-10-08
EP1056936A1 (fr) 2000-12-06
KR20010041047A (ko) 2001-05-15
WO2000037782A1 (fr) 2000-06-29

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