EP1508947B1 - Bougie d'allumage pour moteur à combustion interne - Google Patents

Bougie d'allumage pour moteur à combustion interne Download PDF

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Publication number
EP1508947B1
EP1508947B1 EP04017767A EP04017767A EP1508947B1 EP 1508947 B1 EP1508947 B1 EP 1508947B1 EP 04017767 A EP04017767 A EP 04017767A EP 04017767 A EP04017767 A EP 04017767A EP 1508947 B1 EP1508947 B1 EP 1508947B1
Authority
EP
European Patent Office
Prior art keywords
spark plug
sealing
compensating element
plug according
cylinder head
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.)
Revoked
Application number
EP04017767A
Other languages
German (de)
English (en)
Other versions
EP1508947A1 (fr
Inventor
Werner Niessner
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
Family has litigation
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Application filed by Beru AG filed Critical Beru AG
Publication of EP1508947A1 publication Critical patent/EP1508947A1/fr
Application granted granted Critical
Publication of EP1508947B1 publication Critical patent/EP1508947B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01T13/02—Details
    • H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber

Definitions

  • the invention relates to a spark plug for an internal combustion engine with a spark plug body having a screw thread for screwing the spark plug into the cylinder head of the internal combustion engine, a center electrode and a ground electrode, which is isolated from the center electrode.
  • Such a spark plug is used to generate the spark for the combustion process and is screwed with its screw thread into the cylinder head of the internal combustion engine.
  • the screwing takes place by means of a wrench which engages a hexagon, which is provided on the spark plug body. It should be noted that the spark plug is tightened to a specified tightening torque.
  • a spark plug according to the preamble of claim 1 is made EP-A-1 039 601 known.
  • the object underlying the invention is therefore to provide a spark plug of the type mentioned, which can be screwed into the cylinder head, that a certain desired position of the ground electrode is ensured.
  • this is achieved while maintaining the current standard design of spark plugs, maintaining the usual assembly of spark plugs by means of a screw thread, with spark plugs that are suitable for the existing cylinder head geometries, using conventional mounting techniques and unaltered high voltage interface in the case of high voltage spark plugs.
  • the spark plug according to the invention is thus a series spark plug with a screw thread in standard geometry, which can be screwed into the cylinder head in such a way that the ground electrode is in a precisely positioned position can be arranged in the combustion chamber. In this case, no changes to the cylinder head, to the connector of the high voltage terminal and during assembly necessary because the spark plug has substantially the same geometry as a standard known series spark plug.
  • FIG. 1 is a conventional spark plug for an internal combustion engine of a metallic spark plug body with hexagon 1, 6 and screw thread 7, a center electrode 3 and a ground electrode 4, and a ceramic insulator 2, the ground electrode 4 and the central electrode 3 against each other electrically insulated.
  • spark plug is formed, that is provided in the manner shown with a sealing and compensating element 5, that they can be rotated when screwing into the cylinder head after reaching the prescribed tightening torque in particular by at least one thread further.
  • the sealing and compensating element 5 is manufactured with such a geometry and / or from such a material and arranged so that when tightening the spark plug to the prescribed tightening torque of, for example 30 Nm, the yield strength of the sealing and compensating element 5 is not exceeded and this thus burdened up to a limit of elasticity.
  • the sealing and compensating element 5 can then be greatly expanded with a small increase in the expenditure of force, so that it is possible to cover a large distance, for example a thread turn, with a small increase in force, that is to say with a small increase in the torque at the spark plug.
  • the sealing and compensating element 5 is in the in Fig. 1 illustrated manner arranged so that it is clamped when tightening the spark plug with the prescribed torque between the abutment collar 6 on the spark plug body and the cylinder head. It is thus located between the abutment collar 6 and the thread 7.
  • the sealing and compensation element 5 is annular with a thickness H formed so that its upper outer surface bears against the abutment collar 6 and its lower outer surface is in contact with the cylinder head.
  • the sealing and compensating element 5 is the in Fig. 1a illustrated manner formed centrally with a groove 8, whose cross-sectional area is chosen so that the load after applying a defined force corresponding to a tightening torque of 30 Nm, for example, exceeds the yield strength and the sealing and compensating element 5 by flowing its material to a small thickness, for example, to a thickness (H-1.25) mm deformed.
  • Fig. 1b shows a preferred embodiment of a device for determining the position of the ground electrode.
  • This device consists for example of a Bihex training 9 on an outer surface of the hexagon 1, the position of the ground electrode 4 can be assigned as it is in Fig. 1b is shown.
  • the hexagon 1 of the spark plug is formed so that the spark plug wrench fits only in a well-defined position on the hexagon 1, whereby a determination of the relative position between the ground electrode 4 and the spark plug key is ensured.
  • the position of the ground electrode 4 can be read by a corresponding mark on the spark plug key.
  • Fig. 2 shows in a side view a second preferred embodiment of the spark plug according to the invention, wherein on the left side of Fig. 2 that is in Fig. 2A the condition is shown that the spark plug after screwing with the prescribed tightening torque, while on the left side, that is in Fig. 2B the state is shown, which the spark plug assumes after further rotation and reaching the desired position of the ground electrode 4.
  • the sealing and compensating element 5 is formed in the form of a ring with a diameter D1 and an inner cone 10 at an angle ⁇ and the abutment collar 6 of the spark plug body is in turn also provided with a corresponding cone with the angle ⁇ .
  • the angle ⁇ is preferably between 5 ° and 45 °.
  • the sealing and balancing element 5 is pressed onto the cone of the spark plug body before the assembly of the candle.
  • the prescribed tightening torque of, for example, 30 Nm is applied to the spark plug, without the sealing and compensating element 5 deforming, as shown in FIG Fig. 2A is shown.
  • the sealing and compensating element 5 is formed with such a geometry and of a material having such a strength that its elastic limit is exceeded after the application of a defined force which corresponds to the prescribed tightening torque and the sealing and compensating element 5 after exceeding its yield strength flows like it does in Fig. 2B is shown.
  • Attaching a standard spark plug outer sealing ring is possible and may contribute to improving the tightness between cylinder head threads and spark plug bodies.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (8)

  1. Bougie d'allumage pour un moteur à combustion interne avec un corps de bougie d'allumage, qui présente un filet de vissage pour le vissage dans la culasse du moteur à combustion interne, une électrode centrale et une électrode de masse, qui est électriquement isolée par rapport à l'électrode centrale, un élément déformable d'étanchéité et de compensation (5), qui est disposé de telle manière qu'il soit chargé d'un couple de rotation lors du vissage du corps de bougie d'allumage, dans laquelle l'élément d'étanchéité et de compensation (5) est formé avec une géométrie telle et en une matière telle que, lors de l'application d'un couple de rotation prédéterminé, il soit chargé jusqu'à sa limite d'élasticité et que, pour un serrage ultérieur de la bougie d'allumage, sa matière arrive à l'écoulement au-dessus de la limite d'écoulement, caractérisée en ce qu'une portée hexagonale (1) est formée sur le corps de bougie d'allumage, en ce que l'électrode de masse (4) occupe une position précise déterminée et reconnaissable par rapport à l'outil de montage lors de l'application de l'outil de montage pour la bougie d'allumage sur la portée hexagonale (1).
  2. Bougie d'allumage selon la revendication 1, caractérisée en ce qu'elle est configurée de telle manière qu'elle puisse être serrée ultérieurement d'au moins un pas de filet.
  3. Bougie d'allumage selon la revendication 1 ou 2, caractérisée en ce que l'élément d'étanchéité et de compensation (5) vient s'appliquer entre un rebord d'appui (6) sur le corps de bougie d'allumage et la culasse lors du vissage de la bougie d'allumage.
  4. Bougie d'allumage selon l'une quelconque des revendications précédentes, caractérisée par un joint torique extérieur sur le corps de bougie d'allumage.
  5. Bougie d'allumage selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'étanchéité et de compensation (5) est réalisé sous forme annulaire.
  6. Bougie d'allumage selon la revendication 5, caractérisée en ce qu'une gorge (8) est réalisée au milieu dans la surface extérieure de l'élément d'étanchéité et de compensation annulaire (5).
  7. Bougie d'allumage selon la revendication 5, caractérisée en ce que l'élément d'étanchéité et de compensation annulaire (5) présente sur sa surface intérieure un cône (10), avec lequel il est pressé sur une surface extérieure conique correspondante formée sur le corps de bougie d'allumage.
  8. Bougie d'allumage selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la portée hexagonale (1) présente une configuration bihexagonale (9) sur une face de l'hexagone.
EP04017767A 2003-08-22 2004-07-27 Bougie d'allumage pour moteur à combustion interne Revoked EP1508947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10338743 2003-08-22
DE10338743A DE10338743B4 (de) 2003-08-22 2003-08-22 Zündkerze für eine Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1508947A1 EP1508947A1 (fr) 2005-02-23
EP1508947B1 true EP1508947B1 (fr) 2011-09-14

Family

ID=34042250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04017767A Revoked EP1508947B1 (fr) 2003-08-22 2004-07-27 Bougie d'allumage pour moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP1508947B1 (fr)
AT (1) ATE524860T1 (fr)
DE (1) DE10338743B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219380B3 (de) * 2012-10-24 2014-04-03 Ford Global Technologies, Llc Verfahren zum Herstellen und Überprüfen eines Innengewindes
US11962130B2 (en) 2020-12-22 2024-04-16 Caterpillar Energy Solutions Gmbh Contact surface of the spark plug jacket

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4272682B2 (ja) * 2006-10-30 2009-06-03 日本特殊陶業株式会社 内燃機関用スパークプラグ及びその製造方法
DE102011015183B4 (de) * 2011-03-26 2014-12-11 Federal-Mogul Ignition Gmbh Zündkerze und Verfahren zur Montage einer Zündkerze
DE102012009506A1 (de) 2011-05-27 2012-11-29 Volkswagen Aktiengesellschaft Zylinder eines Verbrennungsmotors für ein Fahrzeug sowie entsprechendes Herstellungsverfahren, Mittel zur Herstellung des Zylinders, Zündkerze, Verbrennungsmotor und Fahrzeug
DE102014105694A1 (de) 2014-04-23 2015-10-29 Federal-Mogul Ignition Gmbh Dichtring für eine Zündkerze eines Verbrennungsmotors, Zündkerze und Verbrennungsmotor
DE102017109844B4 (de) 2017-05-08 2019-08-14 Federal-Mogul Ignition Gmbh Verfahren zum Herstellen einer Zündkerzenanordnung und Zündkerzenanordnung
DE102022121764B4 (de) 2022-08-29 2024-06-27 Volkswagen Aktiengesellschaft Verfahren zur Montage von Zündkerzen an einen Zylinderkopf eines Verbrennungsmotors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049586A (ja) * 1983-08-29 1985-03-18 株式会社デンソー 内燃機関用点火プラグ
JP2001187966A (ja) * 1999-12-28 2001-07-10 Ngk Spark Plug Co Ltd ガスケットを有するねじ付部材

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361810C (de) * 1922-03-14 1922-10-19 Maurice Pognon Zuendkerze mit Metalldichtung
US2921109A (en) * 1955-12-02 1960-01-12 Jet Igniton Co Inc Spark plugs
US3529837A (en) * 1968-12-02 1970-09-22 Champion Spark Plug Co Gasket
US4454445A (en) * 1979-11-07 1984-06-12 Fisher Bernard C Spark plug attachment
DE29720529U1 (de) * 1997-11-19 1998-01-08 Jenbacher Energiesysteme AG, Jenbach Zündkerze und Zündkerzen-Anordnung in einem Verbrennungsmotor
JP4104211B2 (ja) * 1998-06-10 2008-06-18 日本特殊陶業株式会社 ガスケット及びガスケットを有するねじ付部材
JP2000266186A (ja) * 1999-03-19 2000-09-26 Ngk Spark Plug Co Ltd ガスケット及びガスケット付きスパークプラグ
FR2794575B1 (fr) * 1999-06-07 2001-08-24 Peugeot Citroen Automobiles Sa Bougie d'allumage pour moteur a combustion interne
JP2002327674A (ja) * 2001-04-27 2002-11-15 Ngk Spark Plug Co Ltd 内燃機関用点火装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049586A (ja) * 1983-08-29 1985-03-18 株式会社デンソー 内燃機関用点火プラグ
JP2001187966A (ja) * 1999-12-28 2001-07-10 Ngk Spark Plug Co Ltd ガスケットを有するねじ付部材

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219380B3 (de) * 2012-10-24 2014-04-03 Ford Global Technologies, Llc Verfahren zum Herstellen und Überprüfen eines Innengewindes
US11962130B2 (en) 2020-12-22 2024-04-16 Caterpillar Energy Solutions Gmbh Contact surface of the spark plug jacket

Also Published As

Publication number Publication date
DE10338743A1 (de) 2005-03-17
DE10338743B4 (de) 2005-07-21
ATE524860T1 (de) 2011-09-15
EP1508947A1 (fr) 2005-02-23

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