EP1116308B1 - Bougie d'allumage d'un moteur a combustion interne - Google Patents

Bougie d'allumage d'un moteur a combustion interne Download PDF

Info

Publication number
EP1116308B1
EP1116308B1 EP00960308A EP00960308A EP1116308B1 EP 1116308 B1 EP1116308 B1 EP 1116308B1 EP 00960308 A EP00960308 A EP 00960308A EP 00960308 A EP00960308 A EP 00960308A EP 1116308 B1 EP1116308 B1 EP 1116308B1
Authority
EP
European Patent Office
Prior art keywords
contact pin
spark plug
plug according
combustion chamber
precious
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
EP00960308A
Other languages
German (de)
English (en)
Other versions
EP1116308A1 (fr
Inventor
Lars Menken
Bernd Reinsch
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
Priority claimed from DE19939319A external-priority patent/DE19939319B4/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1116308A1 publication Critical patent/EP1116308A1/fr
Application granted granted Critical
Publication of EP1116308B1 publication Critical patent/EP1116308B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/39—Selection of materials for electrodes

Definitions

  • the invention relates to a spark plug for a Internal combustion engine according to the genre of the independent Claims.
  • DE-OS 196 23 989 a spark plug described in the insulator on the combustion chamber side End in a cylindrical, central bore Center electrode is inserted. Behind it towards the End of the insulator remote from the combustion chamber is in the bore Metallic contact pin arranged with a layer is made of nickel or a nickel-silver alloy. This contact pin is in electrical contact with the center electrode.
  • the spark plug with the features of the main claim has in contrast the advantage that the corrosion resistance of the contact pin effectively and with simple means is improved. The operational safety of the spark plug will thus improved. Furthermore, a local and Dimensional stability of the center electrode ensures that a increased ignition voltage requirement is avoided.
  • the measures listed in the subclaims allow advantageous developments and improvements of the spark plug specified in the main claim.
  • it is therefore favorable to coat the entire surface of the contact pin.
  • It is also advantageous in terms of production technology to carry out the coating by thermal spraying or by deposition from the gas phase, in particular by alitizing, which allows the spark plug according to the invention to be produced in large numbers.
  • It has also proven to be advantageous to pre-oxidize the coated contact pin before installing the contact pin, since an Al 2 O 3 protective layer is formed in this way.
  • the shape of the contact pin in the form of a cylinder with a larger diameter at the end remote from the combustion chamber, in particular step-like or conical, since the contact pins can be transported in this way in an advantageous manner during production. It is also advantageous to manufacture the contact pin in a simple cylindrical or conical shape, since manufacturing steps can be saved. A tapered tip of the contact pin on the combustion chamber side is advantageous since a higher pressurization of the end of the contact pin on the combustion chamber side can be achieved during manufacture.
  • FIG. 1 shows a schematic longitudinal section through a Spark plug according to the invention 1.
  • a metallic, tubular housing 5 is a ceramic insulator 10 arranged, the combustion chamber end with reduced Outside diameter forms the so-called insulator base 12.
  • the Rotational symmetry axes of candle housing 5 and insulator 10 are congruent.
  • The is also congruent Axis of one in the cylindrical opening on end of the insulator 10 embedded in the combustion chamber Connection bolt 15.
  • Also in the cylindrical Opening of the insulator are behind the connecting bolt 15 in One or more towards the combustion chamber in this order Panat packages 17, a contact pin 20 and a noble metal electrode 25 arranged.
  • the noble metal electrode 25 is in usually referred to as the center electrode.
  • the Rotation symmetry axes of center electrode 25 and Contact pin 20 are congruent with the axis of the Insulator base 12.
  • the ground electrode 30 is on the candle housing attached, which is bent towards the center electrode.
  • the space between the center electrode and the ground electrode is referred to as spark gap 35.
  • the noble metal center electrode 25 is located above the Contact pin 20 and one or more panat packages 17 in electrical contact with the connecting bolt 15, a Panatvers 17 a crossed by thin layers of metal Glass material package that represents a particular includes electrical resistance and at the same time the Fixing the connecting bolt 15 and the contact pin 20 in the insulator opening.
  • the insulator 10 is made made of a ceramic material which is electrical has an insulating effect and the interior of environmental and Shields engine compartment influences.
  • the contact pin 20 is made of a metal, preferably made of an iron-based alloy, for example one Iron-nickel-cobalt (Fe-Ni-Co) alloy. The However, the corrosion resistance of this alloy is low.
  • the contact pin 20 has the task of spatial separation between center electrode 25 and Panatpers (s) 17 to ensure that the Panat Package or Panat Packages 17 due to their low temperature resistance (only up to approx. 600 ° C) not the high temperatures at the top of the Isolators may be exposed.
  • the spark plug is used to ignite the electrical energy Fuel-air mixture in the combustion chamber, not shown to provide the internal combustion engine. This will be a High voltage via the connecting bolt 15, the Panat 17, the Contact pin 20 passed to the center electrode 25, which then a sparkover between the center electrode 25 and the ground electrode 30 causes. Through the spark contained energy becomes that contained in the combustion chamber Fuel-air mixture ignited, causing various Reactions of highly reactive gases arise.
  • Corrosion is a problem for the operation of the spark plugs of the contact pin 20 by the along a small Penetrating gap between insulator and center electrode highly reactive gases is caused.
  • the gap between Center electrode and insulator are created because the Insulator material and the electrode material different have thermal expansion coefficients and strong Are exposed to temperature fluctuations.
  • According to the invention to reduce corrosion a layer of one or several metal aluminides on the surface of the Contact pin 20 applied.
  • the metal aluminide layer preferably has a thickness of up to 100 ⁇ m, However, a greater thickness of the metal-aluminide layer can also be advantageous his. It can be caused by corrosion increased ignition voltage requirement caused effectively prevented become. The energy requirement is reduced and the Ignition safety is improved.
  • a contact pin according to the invention is shown separately in a longitudinal section.
  • the contact pin 20 has a cylindrical shape, the diameter of the end of the contact pin 20 remote from the combustion chamber being larger and being conically offset from the region with the smaller diameter.
  • the combustion chamber end of the contact pin 20 has a conically tapering tip which is flattened in a circle, whereby the top surface 37 on the combustion chamber side is formed.
  • a layer of one or more metal aluminides is formed on the surface of the contact pin 20, which layer was illustrated by a broad line in FIG.
  • Metal aluminides are intermetallic compounds that consist of a metal and aluminum.
  • a contact pin 20 made of an Fe-Ni-Co alloy is preferably used, one or more Fe-Ni-Co aluminides are formed accordingly. Layer thicknesses between 20 and 70 ⁇ m are preferred.
  • the metal aluminide layer 40 is formed at least on the top surface 37 of the contact pin 20 on the combustion chamber side and measured over a length of 1 mm from the top surface of the contact pin on the combustion chamber side.
  • the metal aluminide layer significantly increases the corrosion resistance of the contact pin 20.
  • the protective effect of the metal aluminide layer 40 formed by the diffusion of the elemental aluminum into the contact pin is based on a closed, firmly adhering, very thin Al 2 O 3 layer formed on the outer surface, which due to its very slow growth achieves both that underlying aluminide as well as the base material protects against a corrosive attack. If local destruction of the Al 2 O 3 layer occurs, for example due to chipping, a new Al 2 O 3 layer forms due to the aluminum present in the aluminide. A self-healing passivation of the coated surface of the contact pin 20 is thus ensured.
  • the contact pin 20 is off Figure 2 again in a schematic longitudinal section shown together with the center electrode 25. Since the Contact pin on the combustion chamber side cover surface 37 with the Metal aluminide layer 40 is coated, forms under Operating conditions, i.e. at temperatures up to 1000 ° C when in contact with the noble metal center electrode 25 on this top surface 37 facing the center electrode 25 the contact pin 20 one or more precious metal-aluminum connections, that are brittle. Preferably there is Center electrode 25 made of platinum or a platinum alloy, consequently, this contact pin cover surface 37 is formed one or more brittle platinum-aluminum compounds.
  • the formation of brittle connections on the top surface of the Contact pin 37 is advantageous because too strong Length changes due to different Coefficient of thermal expansion of central electrode 25 and Contact pin 20, which occur during thermal cycling, in the transition area between center electrode 25 and Contact pin 20 gap formation is made possible.
  • On such a gap is shown in FIG. 3 with the reference symbol 42 Mistake.
  • a frictional connection between the center electrode 25 and Contact pin 20 is prevented by the gap 42. It can such a spatial and dimensional stability of the center electrode be guaranteed, thereby increasing Ignition voltage requirement is avoided. Is particularly pronounced the gap formation when the thickness of the metal aluminide layer, from which the precious metal-aluminum connection is based forms, has a thickness of more than 100 microns.
  • An electrical contact between the center electrode 25 and the contact pin 20 is in the intended Spark plug voltages always present.
  • FIG 4. Another embodiment is shown in Figure 4. It is analogous to Figure 2, the schematic longitudinal section of a Contact pin 20 shown with an analog shape, now the entire surface of the contact pin 20 with the metal-aluminide layer 40 is coated. Analogous to Figure 2 the broad line identifies the metal-aluminide layer 40. The reference number 37 in turn is the combustion chamber side Designated top surface of the contact pin.
  • a contact pin according to the invention can in Sliding spark plugs, in air spark plugs and in air sliding spark plugs be used.
  • a can contact pin according to the invention also a different one than in Figures 2 and 4 have the shape shown.
  • the two diameters of the contact pin in Figure 2 and 4 can be chosen arbitrarily. Even the length of the two Areas and the length of the tapered transition between neither area is specified. Also the length of the tapered tip of the combustion chamber Contact pins can be chosen freely. The same is true Any diameter of the top surface 37 on the combustion chamber side selectable.
  • the contact pin can therefore be optimal Dimensioning of the spark plug and the conditions of the Adjust manufacturing.
  • FIG. 5 Another exemplary embodiment is shown in FIG. 5 shown.
  • the one shown in a longitudinal section Contact pin 20 has compared to the embodiment of FIG Figure 2 no tapered tip and one Cover surface 37, which has no reduced diameter compared to the cylindrical area on the combustion chamber side has.
  • the top surface 37 on the combustion chamber side has the same diameter as the cylindrical one area on the combustion chamber.
  • Figure 6 is the transition between the combustion chamber side cylindrical area and the combustion chamber distant cylindrical area with the larger diameter stepped.
  • Another Embodiment occurs, as shown in Figure 7 Change in diameter along the contact pin does not occur.
  • FIGS. 6 to 8 A frustoconical design of the Contact pin may be possible, which is shown in Figure 8.
  • the Embodiments in FIGS. 6 to 8 can also be a Have design of the tip on the combustion chamber as they described in Figure 2 and again separately in Figure 9 in was shown a longitudinal section. According to the figure 9 can the combustion chamber side tip of the contact pin 20th taper conically and a top surface on the combustion chamber side have a smaller diameter than the adjoining area.
  • the separation of the aluminum-containing Surface coating, the metal aluminide, the Contact pins 20 necessary aluminum can by means thermal spray process, a physical (Physical Vapor Deposition, PVD) or a chemical (Chemical Vapor Deposition, CVD) separation from the gas phase.
  • the aluminum is preferably deposited using a CVD process, especially through an alitation.
  • Alitation is a process in which the surface layer of a workpiece is enriched with aluminum through a thermochemical treatment.
  • the workpiece is embedded in a powder bed, for example, which is composed of a high proportion of Al 2 O 3 , an aluminum-containing donor alloy and a halogen-containing activator.
  • Elemental aluminum is deposited by a chemical reaction consisting of several steps in a hydrogen-containing atmosphere at a pressure between 0.01 and 10 MPa and temperatures of 900 ° C to 1100 ° C over a period of up to 10 hours.
  • a large number of contact pins can be embedded in the powder bed, so the alitation can be designed inexpensively.
  • the alitation can also be carried out without a powder bed by producing a transportable, gaseous aluminum compound, an aluminum halide, at a different location in relation to the location at which the contact pins are coated and by means of a flow containing hydrogen gas is transported to the coating site.
  • the transportable aluminum compound is formed from an aluminum-containing donor alloy and a halogen-containing activator.
  • an additional oxidation step of the coated contact pin can be carried out. This pre-oxidation leads to the formation of the passivating Al 2 O 3 layer described above even before the contact pin is installed.
  • the oxidation takes place at temperatures between 500 ° C and 1200 ° C over a period of up to 100 hours in an oxygen-containing atmosphere.
  • FIG. 10 shows the effect of the metal aluminide layer 40 described above using a diagram.
  • the diagram shows the diameter increase of a contact pin when the contact pin is exposed to a temperature of 900 ° C in air.
  • the diameter increase of the examined contact pins is plotted in ⁇ m over the aging period in hours.
  • the round symbols mean the measured values for an uncoated Fe-Ni-Co contact pin, the squares the measured values for an Fe-Ni-Co contact pin provided with a 20-30 ⁇ m thick nickel layer and the rhombuses for one with a through Alitation generated and 25-60 ⁇ m thick Fe-Ni-Co aluminide layer provided Fe-Ni-Co contact pin.
  • the coating is applied to the entire surface of the contact pin.
  • a considerable increase in diameter can be clearly seen for the uncoated and the nickel-plated contact layer, while the increase in diameter of the aluminum contact pin is small. Furthermore, no further increase in diameter can be observed after about 300 hours in the case of the alitated contact pin. The increase in diameter is caused by corrosion of the contact pin. In the case of the alitated contact pin, the slight increase in diameter occurs due to the formation of the Al 2 O 3 layer.
  • spark plugs with a contact pin according to the invention could reduce corrosion and local and Dimensional stability of the center electrode can be observed.

Landscapes

  • Spark Plugs (AREA)

Claims (15)

  1. Bougie d'allumage comportant un isolateur (10) avec une ouverture de forme cylindrique recevant une électrode en métal noble (25) et une broche de contact métallique (20),
    l'électrode en métal noble (25) pénétrant dans la chambre de combustion d'un moteur à combustion interne pour un fonctionnement correspondant à des éléments déterminés,
    la broche de contact (20) étant prévue à l'extrémité de l'électrode en métal noble, éloignée de la chambre de combustion et cette broche étant réalisée comme contact électrique,
    caractérisée en ce que
    la surface de la broche de contact (20) comporte une couche d'un ou plusieurs aluminures métalliques (40).
  2. Bougie d'allumage selon la revendication 1,
    caractérisée en ce que
    par un cyclage thermique il se forme un intervalle (42) entre la broche de contact (20) et l'électrode de métal noble (25).
  3. Bougie d'allumage selon l'une quelconque des revendications 1 ou 2,
    caractérisée en ce que
    la broche de contact (20) présente la couche d'aluminure métallique (40) sur toute sa surface.
  4. Bougie d'allumage selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    la broche de contact (20) est formée d'un alliage Fe-Ni-Co et la couche d'aluminure métallique est formée d'un ou plusieurs aluminures métalliques (Fe, Ni, Co).
  5. Bougie d'allumage selon l'une quelconque des revendications 1 à 3,
    caractérisée par
    une ou plusieurs liaisons aluminium-métal noble dans la zone transitoire entre la broche de contact (20) et l'électrode de métal noble (25).
  6. Bougie d'allumage selon la revendication 5,
    caractérisée en ce qu'
    une ou plusieurs liaisons aluminium-platine se forment dans la zone transitoire entre la broche de contact (20) et l'électrode de métal noble (25).
  7. Bougie d'allumage selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    le revêtement avec l'aluminium sur la broche de contact (20) se fait par projection thermique et/ou dépôt physique ou chimique à partir de la phase gazeuse.
  8. Bougie d'allumage selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce que
    le revêtement d'aluminium correspond à un enrichissement en aluminium de la couche limite de la broche de contact (20) par traitement thermochimique (aluminier).
  9. Bougie d'allumage selon la revendication 8,
    caractérisée en ce qu'
    on aluminie dans un lit de poudre.
  10. Bougie d'allumage selon l'une quelconque des revendications 7 à 9,
    caractérisée en ce que
    la broche de contact (20) revêtue est soumise à une étape d'oxydation avant son montage dans la bougie d'allumage.
  11. Bougie d'allumage selon l'une quelconque des revendications 1 à 10.
    caractérisée en ce que
    la broche de contact (20) a une forme cylindrique.
  12. Bougie d'allumage selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce que
    la broche de contact (20) a une forme cylindrique ayant deux zones qui se rejoignent suivant une forme conique et ont un diamètre différent, la zone de petit diamètre formant l'extrémité de la broche de contact située du côté de la chambre de combustion.
  13. Bougie d'allumage selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce que
    la broche de contact (20) a une forme cylindrique ayant deux zones de diamètres différents décalées l'une de l'autre par une forme de gradin et la zone de petit diamètre constitue l'extrémité de la broche de contact située du côté de la chambre de combustion.
  14. Bougie d'allumage selon l'une quelconque des revendications 11 à 13,
    caractérisée en ce que
    la broche de contact (20) a une pointe conique et l'extrémité située du côté de la chambre de combustion présente une surface supérieure circulaire de plus petit diamètre que la zone cylindrique située du côté de la chambre de combustion.
  15. Bougie d'allumage selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce que
    la broche de contact (20) a une forme tronconique.
EP00960308A 1999-07-29 2000-07-22 Bougie d'allumage d'un moteur a combustion interne Expired - Lifetime EP1116308B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19935676 1999-07-29
DE19935676 1999-07-29
DE19939319 1999-08-19
DE19939319A DE19939319B4 (de) 1999-07-29 1999-08-19 Zündkerze für eine Brennkraftmaschine
PCT/DE2000/002409 WO2001009998A1 (fr) 1999-07-29 2000-07-22 Bougie d'allumage d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1116308A1 EP1116308A1 (fr) 2001-07-18
EP1116308B1 true EP1116308B1 (fr) 2002-12-18

Family

ID=26054392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960308A Expired - Lifetime EP1116308B1 (fr) 1999-07-29 2000-07-22 Bougie d'allumage d'un moteur a combustion interne

Country Status (5)

Country Link
US (1) US6628051B1 (fr)
EP (1) EP1116308B1 (fr)
JP (1) JP4532802B2 (fr)
BR (1) BR0006701A (fr)
WO (1) WO2001009998A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103229372A (zh) 2010-07-29 2013-07-31 美国辉门（菲德尔莫古）点火系统有限公司 用于与火花塞一起使用的电极材料
US8471451B2 (en) 2011-01-05 2013-06-25 Federal-Mogul Ignition Company Ruthenium-based electrode material for a spark plug
US8575830B2 (en) 2011-01-27 2013-11-05 Federal-Mogul Ignition Company Electrode material for a spark plug
WO2012116062A2 (fr) 2011-02-22 2012-08-30 Federal-Mogul Ignition Company Matériau d'électrode pour bougie d'allumage
WO2013003325A2 (fr) 2011-06-28 2013-01-03 Federal-Mogul Ignition Company Matériau d'électrode pour une bougie d'allumage
US10044172B2 (en) 2012-04-27 2018-08-07 Federal-Mogul Ignition Company Electrode for spark plug comprising ruthenium-based material
WO2013177031A1 (fr) 2012-05-22 2013-11-28 Federal-Mogul Ignition Company Procédé de fabrication de matériau à base de ruthénium pour une électrode de bougie d'allumage
US8979606B2 (en) 2012-06-26 2015-03-17 Federal-Mogul Ignition Company Method of manufacturing a ruthenium-based spark plug electrode material into a desired form and a ruthenium-based material for use in a spark plug
US9231380B2 (en) 2012-07-16 2016-01-05 Federal-Mogul Ignition Company Electrode material for a spark plug
JP6035177B2 (ja) 2012-08-20 2016-11-30 株式会社デンソー 内燃機関用のスパークプラグ
DE102015115746B4 (de) 2015-09-17 2017-04-27 Federal-Mogul Ignition Gmbh Verfahren zum Herstellen einer Zündelektrode für Zündkerzen und damit hergestellte Zündkerze

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192429A (en) * 1960-11-08 1965-06-29 Gen Motors Corp Center electrode for spark plug
US3171052A (en) * 1961-10-10 1965-02-23 Gen Motors Corp Ceramic-to-metal bond for spark plugs and the like
JPS4312186Y1 (fr) * 1967-11-07 1968-05-25
US3922396A (en) * 1974-04-23 1975-11-25 Chromalloy American Corp Corrosion resistant coating system for ferrous metal articles having brazed joints
JPS54158539A (en) * 1978-06-03 1979-12-14 Mazda Motor Corp Method of making ignition plug electrode having corrosion-proof property at hight temperature
JPS6035992B2 (ja) * 1980-05-02 1985-08-17 株式会社日立製作所 Ｎｉ合金のＡｌコ−テイング方法
DE3038720A1 (de) * 1980-10-14 1982-06-03 Robert Bosch Gmbh, 7000 Stuttgart Zuendkerze fuer brennkraftmaschine
DE3144253A1 (de) * 1981-11-07 1983-05-19 Robert Bosch Gmbh, 7000 Stuttgart Zuendkerze fuer brennkraftmaschinen
DE3230362A1 (de) * 1982-08-14 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Hochspannungszuendkerze
US4659960A (en) * 1984-05-09 1987-04-21 Ngk Spark Plug Co., Ltd. Electrode structure for a spark plug
JPS61277184A (ja) * 1985-05-31 1986-12-08 日本特殊陶業株式会社 点火プラグ
JPS6258586A (ja) * 1985-09-07 1987-03-14 日本特殊陶業株式会社 点火プラグ
JPS62208583A (ja) * 1986-03-07 1987-09-12 日本特殊陶業株式会社 点火プラグ
DE4431143B4 (de) 1994-09-01 2004-09-23 Robert Bosch Gmbh Zündkerze für eine Brennkraftmaschine
US5503874A (en) * 1994-09-30 1996-04-02 General Electric Company Method for low temperature chemical vapor deposition of aluminides containing easily oxidized metals
DE19623989C2 (de) 1996-06-15 1998-07-30 Bosch Gmbh Robert Zündkerze für eine Brennkraftmaschine
US5807428A (en) * 1997-05-22 1998-09-15 United Technologies Corporation Slurry coating system

Also Published As

Publication number Publication date
BR0006701A (pt) 2001-04-17
US6628051B1 (en) 2003-09-30
JP4532802B2 (ja) 2010-08-25
EP1116308A1 (fr) 2001-07-18
WO2001009998A1 (fr) 2001-02-08
JP2003506835A (ja) 2003-02-18

Similar Documents

Publication Publication Date Title
DE19650728B4 (de) Zündkerze
DE2900984C2 (de) Glühkerze für Dieselmotoren
EP1116308B1 (fr) Bougie d'allumage d'un moteur a combustion interne
EP2953217B1 (fr) Procédé de fabrication d'une bougie d'allumage pour un moteur à combustion interne et bougie d'allumage pour un moteur à combustion interne
WO2007051677A1 (fr) Electrode de bougie d'allumage et procede de fabrication d'une electrode de bougie d'allumage
EP2089944B1 (fr) Bougie d'allumage, notamment pour des pressions élevées de la chambre de combustion
EP0860043B1 (fr) Procede de depot et production d'electrode pour bougies de moteurs a combustion interne
DE19939319B4 (de) Zündkerze für eine Brennkraftmaschine
DE102019209639A1 (de) Bauteil für einen Injektor für die Kraftstoff- und/oder Wassereinspritzung von Ottomotoren, Verfahren zu dessen Herstellung sowie Injektor für die Kraftstoff- und/oder Wassereinspritzung von Ottomotoren
EP1305858A1 (fr) Bougie d'allumage d'un moteur a combustion interne et procede de production d'une bougie d'allumage
WO2006111444A1 (fr) Electrode destinee a une bougie d'allumage
DE102014103053B4 (de) Verfahren zum Herstellen eines Zündkerzen-Elektrodenmaterials, Verfahren zum Herstellen einer Zündkerze, und Elektrodensegment zur Verwendung in einer Zündkerze
DE102013226667B4 (de) Zündkerze mit Dichtung aus einem nichtleitenden Material
DE10348778B3 (de) Elektrode für eine Zündkerze und Verfahren zum Herstellen einer Elektrode
EP2138768A2 (fr) Procédé de fabrication d'un composite en couche en céramique
DE2840995A1 (de) Elektrode zur erzeugung von zuendfunken und zuender mit einer solchen elektrode
DE2530368B2 (de) Zündkerze
DE102017205520A1 (de) Zündkerzenelektrode, Zündkerze und Verfahren zur Herstellung einer Zündkerzenelektrode
DE10222262A1 (de) Legierung
DE102013210447B4 (de) Zündkerzenelektrode mit Nickel-Rhodium-Beschichtung, sowie Verfahren zur Herstellunq und Zündkerze mit einer solchen Zündkerzenelektrode
EP2952730B1 (fr) Procédé de fabrication d'une soupape d'injection pour un moteur à combustion interne et soupape d'injection pour un moteur à combustion interne
EP2697404B1 (fr) Alliage pour electrode de bougie d'allumage, bougie d'allumage et procede pour la fabrication
WO2005088793A1 (fr) Bougie d'allumage
WO2014195034A1 (fr) Matière d'électrode de bougie d'allumage, électrode de bougie d'allumage et bougie d'allumage
DE102005047174A1 (de) Zündkerze mit einer Mittelelektrode

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010808

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020304

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50000960

Country of ref document: DE

Date of ref document: 20030130

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030315

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20021218

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 1116308E

Country of ref document: IE

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030919

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090724

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100924

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100722

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110729

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130201

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120731

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50000960

Country of ref document: DE

Effective date: 20130201