EP3068001A1 - Bougie d'allumage - Google Patents

Bougie d'allumage Download PDF

Info

Publication number
EP3068001A1
EP3068001A1 EP16450005.0A EP16450005A EP3068001A1 EP 3068001 A1 EP3068001 A1 EP 3068001A1 EP 16450005 A EP16450005 A EP 16450005A EP 3068001 A1 EP3068001 A1 EP 3068001A1
Authority
EP
European Patent Office
Prior art keywords
spark plug
plug according
electrode
holder plate
space
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Withdrawn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
EP16450005.0A
Other languages
German (de)
English (en)
Inventor
Josef Schnöll
Elias Russegger
Rüdiger HERDIN
Andreas Herdin
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.)
Er-System Mechatronik GmbH
Original Assignee
Er-System Mechatronik 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 Er-System Mechatronik GmbH filed Critical Er-System Mechatronik GmbH
Publication of EP3068001A1 publication Critical patent/EP3068001A1/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Withdrawn legal-status Critical Current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
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
    • 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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
    • 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
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H01T13/467—Sparking plugs having two or more spark gaps in parallel connection

Definitions

  • the invention relates to a spark plug for internal combustion engines according to the preamble of claim 1.
  • Spark plugs for internal combustion engines are exposed to high thermal loads and are intended to ignite a combustion gas mixture in the engine over a long service life at the desired time. Due to steadily decreasing emission limits by the legislator, spark plugs have to guarantee an ignition in the combustion chamber with increasingly lean combustion gas mixtures. However, lean combustion gas mixtures are not particularly willing to ignite and present developers of combustion gas engines and spark plug producers with particular challenges.
  • Spark plugs for use with lean combustion gas mixtures are, for example, from AT 511 609 B1 known.
  • electrodes made of special materials such as conductive ceramics or precious metals are used. These materials should keep the resistance values between the electrodes at high thermal loads as low as possible and guarantee an optimal ignition spark.
  • Object of the present invention is to provide a spark plug, which ensures optimal ignition especially for lean combustion gas mixtures.
  • a planar, preferably flat, separating element is arranged in the region of the electrodes, which has connecting openings.
  • connection openings allow a gas exchange between the storage space behind the separating element and the pre-chamber space in front of the separating element.
  • existing exhaust gas which is still in the prechamber space, is forced out of the prechamber space through the connection openings into the storage space during the compression stroke.
  • the separating element is designed in a preferred embodiment of the invention as an electrode holder plate and has a centrally disposed opening for the center electrode. Between the electrode holder plate and the central electrode arranged in the central opening there is a spark gap. In this case, the electrode holder plate forms the negative pole and the center electrode forms the positive pole.
  • the ignition gap can also be open to the storage space according to the invention.
  • a separating element separate from the electrodes may be provided.
  • the separating element is preferably arranged behind the electrodes on the side of the storage space of the spark plug.
  • the total area of the openings connecting the storage space and the antechamber space amounts to a maximum of 50% of the total area of the separating element. This limitation of the total area prevents the compressed exhaust gas from flowing back into the pre-chamber space and impairing the ignitability of the fresh combustion gas mixture.
  • the ratio of the volume of the pre-chamber space to the volume of the storage space in the compression ratio of the internal combustion engine in particular in the ratio 1: 8 until 1:14 lies.
  • the ratio may also be smaller or larger than the compression ratio, depending on the prevailing or desired conditions, and deviations of up to or more than 10% or 20% are possible.
  • the electrode holder plate can be designed in several parts, in particular in two parts.
  • FIGS. 1 to 6 the front part of a spark plug 1 according to the invention is shown in two preferred embodiments.
  • a non-current-conducting insulator 2 preferably made of ceramic, separates a spark plug housing 15 and a rod electrode 3 extending along a central axis 17 structurally and electrically from one another.
  • the portion of the spark plug 1 in which the stick electrode 3 is located is referred to as the front portion of the spark plug 1.
  • a spark plug thread 4 located in the front area on the spark plug housing 15, located in the front area on the spark plug housing 15, a spark plug thread 4. In a stepped,
  • Recessed portion 16 of the spark plug housing 15 is a separating element, which is designed in the illustrated embodiments as an electrode holder plate 8 with at least one connection opening 9. In the embodiments, four connection openings 9 are provided.
  • the connecting openings 9 connect a storage space 11 in the spark plug housing 15 with a pre-chamber space 14 on the opposite side of the electrode holder plate 8.
  • a ground electrode 7 located on the electrode holder plate 8, a ground electrode 7. In order to prevent a pressure loss in the cylinder in the installed state of the spark plug is located between the spark plug housing 15 and the insulator 2 a seal. 5
  • a differently shaped holder for the ground electrode 7 may be provided or the ground electrodes 7, as is customary in the prior art, be attached to the spark plug housing 15.
  • a separate, e.g. plate-shaped, separating element provided, which is preferably arranged behind the electrodes on the side of the storage space.
  • a first preferred embodiment of the spark plug 1 according to the invention is shown.
  • the insulator 2 ends before the recessed area 16, in which the rod electrode 3 from the electrode holder plate is surrounded.
  • the region 16 is arranged so that the supernatant 18 between the spark plug thread 4 and the electrode holder plate 8 as narrow and close to the thread 4 is designed to best ensure a heat conduction from the electrode holder plate 8 via the spark plug thread 4 to a cylinder head in the installed state.
  • the storage space 11 behind the electrode holder plate 8 is limited by the spark plug housing 15, the insulator 2 and by the seal 5.
  • Fig. 2 shows the electrode holder plate 8 with the connection openings 9 in the installed state.
  • the center electrode 6 forms the positive pole and has the shape of a circular disk, but may also have the shape of a polygon or a star-shaped plate with rod-shaped projections.
  • the center electrode 6 is spaced from the surrounding ground electrode 7 by a spark gap 10.
  • the ground electrode 7 can be designed so that the separating element itself forms the ground electrode 7. However, particularly preferred is when the ground electrode 7 is a ring which is fixed to the electrode holder plate 8, as in Fig. 2 you can see.
  • the ground electrode 7 and the center electrode 6 are made of materials such as precious metal or are coated with a noble metal that withstands the thermal stresses and has a low resistance at high temperatures.
  • the connecting openings 9 between the storage space 11 and the pre-chamber space 14 are preferably circular arc-shaped and arranged at equal angular intervals to one another in the separating element or in the electrode holder plate 8.
  • the pre-chamber space 14 is by a in the Fig. 6 illustrated pre-chamber housing 20 is formed, with which the spark plug 1 is screwed so that the front end of the spark plug forms part of the boundary of the pre-chamber space.
  • the Fig. 3 to 5 show a second preferred embodiment of the spark plug according to the invention 1.
  • the pre-chamber space 14 is not formed by screwing the spark plug with a pre-chamber housing 20, but that the pre-chamber space 14 is formed by an inextricably attached to the spark plug 1 Vorhuntkuppe 12.
  • the Vorhuntkuppe 12 is attached to the spark plug housing 15, for example by welding.
  • the Vorschkuppe 12 is arranged on the front side of the spark plug 1 that the screwing of the spark plug 1 is not hindered in the thread on the cylinder head.
  • an end-side, coaxially arranged opening 13 and four radially outwardly leading openings 13 are present. Through these openings 13, the fresh combustion gas mixture can flow into the pre-chamber space 14 or escape combustion gases again. Furthermore, the ignition flames pass through these openings 13 into the combustion chamber of the engine.
  • Fig. 5 is a detailed drawing of the inserted and fixed by the Vorhuntkuppe 12 electrode holder plate 8 and the connecting openings 9, the rod electrode 3, the center electrode 6, the ignition gap 10 and the ground electrode 7 is shown enlarged.
  • the insulator 2 and the electrode holder plate 8 are arranged to one another such that the ignition gap 10 is open to the storage space 11 so that gas can flow from the storage space 11 into the pre-chamber space 14 and vice versa.
  • the stepped portion 16 is formed so that after insertion of the electrode holder plate 8 still protrudes a projection 18. In the stepped portion 16 with the projection 18 engages a gradation 19 at the periphery of the Vorschkuppe 12 for centering.
  • a particular advantage of an antechamber is that less pre-chamber 14 turbulence than in the cylinder and thus reduces the risk that the spark is blown out, is reduced. Also, the fuel concentration in the pre-chamber 14 can be increased by additionally supplied fuel, which further facilitates the ignition.
  • Fig. 6 is the spark plug 1 according to the invention in one Vorhuntgeophuse 20 shown in section along the central axis 17.
  • the pre-chamber housing 20 takes over their function.
  • the pre-chamber housing 20 is preferably made of two interconnected parts. In the upper, good heat conducting part, the spark plug 1 is screwed, wherein the upper part is designed so that the threaded connection between the thread 4 of the spark plug 1 and the thread of the prechamber housing 20 at least up to the height of the electrode holder plate 8 is sufficient to good cooling to ensure this.
  • the lower part of the prechamber housing protrudes into the combustion chamber of the engine cylinder.
  • the volume ratio of the prechamber 14 to the storage chamber 11 again corresponds approximately to the engine compression ratio as in the embodiment with a Vorschkuppe 12. About the radially outwardly leading openings 13 takes place as in the Vorschkuppe 12, the gas exchange and the ignition of the fresh combustion gas mixture.
  • the variant with a pre-chamber housing 20 according to Fig. 6 is mainly used for large engines.

Landscapes

  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)
EP16450005.0A 2015-03-13 2016-03-10 Bougie d'allumage Withdrawn EP3068001A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA141/2015A AT516835B1 (de) 2015-03-13 2015-03-13 Zündkerze

Publications (1)

Publication Number Publication Date
EP3068001A1 true EP3068001A1 (fr) 2016-09-14

Family

ID=55542621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16450005.0A Withdrawn EP3068001A1 (fr) 2015-03-13 2016-03-10 Bougie d'allumage

Country Status (2)

Country Link
EP (1) EP3068001A1 (fr)
AT (1) AT516835B1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019141728A1 (fr) * 2018-01-18 2019-07-25 Elias Russegger Dispositif d'allumage pour moteur à gaz
US10598130B2 (en) 2017-12-06 2020-03-24 Federal-Mogul Ignition Gmbh Spark plug with supply passage for fuel, and a system with same
WO2020124103A1 (fr) 2018-12-21 2020-06-25 Innio Jenbacher Gmbh & Co Og Bougie d'allumage et procédé de fabrication d'une bougie d'allumage
WO2021253061A1 (fr) 2020-06-18 2021-12-23 Innio Jenbacher Gmbh & Co Og Procédé de fabrication d'un ensemble pour une bougie d'allumage et bougie d'allumage
EP3934033A1 (fr) * 2020-07-03 2022-01-05 Sparkx GmbH Bougie d'allumage de chambre de précombustion, procédé de fabrication d'une telle bougie d'allumage de chambre de précombustion, ainsi que moteur à combustion interne comprenant une telle bougie d'allumage de chambre de précombustion
WO2022242861A1 (fr) * 2021-05-20 2022-11-24 Robert Bosch Gmbh Bougie d'allumage de pré-chambre
JP2022551824A (ja) * 2019-10-15 2022-12-14 インニオ ジェンバッハー ゲーエムベーハー アンド コー オーゲー スパークプラグ及びスパークプラグの作製方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3923427B1 (fr) 2020-06-09 2024-04-03 Elias Russegger Bougie d'allumage du moteur à gaz

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675272A1 (fr) * 1994-03-29 1995-10-04 Dieter Dr. Kuhnert Dispositif d'allumage à préchambre
US20070069617A1 (en) * 2004-06-24 2007-03-29 Tozzi Luigi P Pre-chamber spark plug
US20110062850A1 (en) * 2009-09-11 2011-03-17 Woodward Governor Company Pre-Chamber Spark Plug and Electrodes Therefor
DE102011053530A1 (de) * 2010-11-23 2012-05-24 Woodward, Inc. Vorkammerzündkerze mit rohrförmiger elektrode und verfahrenzur herstellung derselben
AT511609B1 (de) 2011-07-19 2013-01-15 Ge Jenbacher Gmbh & Co Ohg Zündkerze für eine brennkraftmaschine
US8839762B1 (en) * 2013-06-10 2014-09-23 Woodward, Inc. Multi-chamber igniter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3175871D1 (en) * 1981-06-16 1987-02-26 Kirkhouse Jet Plug Pty Spark plug
EP1701419A1 (fr) * 2005-03-08 2006-09-13 Veenstra- Glazenborg B.V. Bougie d'allumage munie d'une préchambre et moteur à combustion interne comportant une bougie d'allumage munie d'une préchambre

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675272A1 (fr) * 1994-03-29 1995-10-04 Dieter Dr. Kuhnert Dispositif d'allumage à préchambre
US20070069617A1 (en) * 2004-06-24 2007-03-29 Tozzi Luigi P Pre-chamber spark plug
US20110062850A1 (en) * 2009-09-11 2011-03-17 Woodward Governor Company Pre-Chamber Spark Plug and Electrodes Therefor
DE102011053530A1 (de) * 2010-11-23 2012-05-24 Woodward, Inc. Vorkammerzündkerze mit rohrförmiger elektrode und verfahrenzur herstellung derselben
AT511609B1 (de) 2011-07-19 2013-01-15 Ge Jenbacher Gmbh & Co Ohg Zündkerze für eine brennkraftmaschine
US8839762B1 (en) * 2013-06-10 2014-09-23 Woodward, Inc. Multi-chamber igniter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10598130B2 (en) 2017-12-06 2020-03-24 Federal-Mogul Ignition Gmbh Spark plug with supply passage for fuel, and a system with same
WO2019141728A1 (fr) * 2018-01-18 2019-07-25 Elias Russegger Dispositif d'allumage pour moteur à gaz
WO2020124103A1 (fr) 2018-12-21 2020-06-25 Innio Jenbacher Gmbh & Co Og Bougie d'allumage et procédé de fabrication d'une bougie d'allumage
JP2022551824A (ja) * 2019-10-15 2022-12-14 インニオ ジェンバッハー ゲーエムベーハー アンド コー オーゲー スパークプラグ及びスパークプラグの作製方法
JP7228749B2 (ja) 2019-10-15 2023-02-24 インニオ ジェンバッハー ゲーエムベーハー アンド コー オーゲー スパークプラグ及びスパークプラグの作製方法
US11855417B2 (en) 2019-10-15 2023-12-26 Innio Jenbacher Gmbh & Co Og Spark plug and method for producing a spark plug
US12027825B1 (en) 2019-10-15 2024-07-02 Innio Jenbacher Gmbh & Co Og Spark plug and method for producing a spark plug
WO2021253061A1 (fr) 2020-06-18 2021-12-23 Innio Jenbacher Gmbh & Co Og Procédé de fabrication d'un ensemble pour une bougie d'allumage et bougie d'allumage
US12027828B2 (en) 2020-06-18 2024-07-02 Innio Jenbacher Gmbh & Co Og Method for manufacturing an assembly for a spark plug and spark plug
EP3934033A1 (fr) * 2020-07-03 2022-01-05 Sparkx GmbH Bougie d'allumage de chambre de précombustion, procédé de fabrication d'une telle bougie d'allumage de chambre de précombustion, ainsi que moteur à combustion interne comprenant une telle bougie d'allumage de chambre de précombustion
WO2022002536A1 (fr) * 2020-07-03 2022-01-06 SparkX GmbH Bougies d'allumage de préchambre, procédé de fabrication de ce type de bougies d'allumage de préchambre et moteur à combustion interne comprenant ce type de bougie d'allumage de préchambre
WO2022242861A1 (fr) * 2021-05-20 2022-11-24 Robert Bosch Gmbh Bougie d'allumage de pré-chambre

Also Published As

Publication number Publication date
AT516835A4 (de) 2016-09-15
AT516835B1 (de) 2016-09-15

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