EP2628220B1 - Kurzschlussschutz bei einer hf-zündkerze - Google Patents

Kurzschlussschutz bei einer hf-zündkerze Download PDF

Info

Publication number
EP2628220B1
EP2628220B1 EP11779805.8A EP11779805A EP2628220B1 EP 2628220 B1 EP2628220 B1 EP 2628220B1 EP 11779805 A EP11779805 A EP 11779805A EP 2628220 B1 EP2628220 B1 EP 2628220B1
Authority
EP
European Patent Office
Prior art keywords
shell
spark plug
component
insulating
central electrode
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.)
Not-in-force
Application number
EP11779805.8A
Other languages
English (en)
French (fr)
Other versions
EP2628220A1 (de
Inventor
Maxime Makarov
Marc Pariente
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP2628220A1 publication Critical patent/EP2628220A1/de
Application granted granted Critical
Publication of EP2628220B1 publication Critical patent/EP2628220B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
    • 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
    • H01T13/50—Sparking plugs having means for ionisation of gap
    • 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
    • H01T13/52—Sparking plugs characterised by a discharge along a surface
    • 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
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs

Definitions

  • the invention relates to radiofrequency plasma candles.
  • the invention more particularly relates to candles called radiofrequency plasma for equipping combustion chambers of internal combustion engines and which comprise a central electrode of cylindrical form made of a conductive type material, which comprises an upper end and an end. lower part arranged in the combustion chamber, a substantially tubular shaped part, made of an electrically insulating material, which comprises an upper part and a lower part, and which surrounds the central electrode over a portion of its length so as to the lower end of the central electrode protrudes from the lower part of the insulating material part, a substantially tubular steel base which comprises an upper part and a lower part, and which surrounds the piece of insulating material on a portion of its length so that the lower part re of the piece of insulating material protrudes from the bottom of the base.
  • the upper and lower terms are used to designate opposite sides of the candle.
  • lower end is meant the side of the candle to be arranged in the combustion chamber.
  • Other terms may substitute such as left / right or candle head to designate said side of the candle.
  • Radiofrequency plasma spark plugs are part of these new spark plugs by constituting high-frequency multi-spark ignition systems capable of ensuring the ignition of spark ignition engines powered with poor gas mixtures.
  • the base has a threaded portion at the lower end of the electrode side, which allows the screwing of the candle in the threaded hole of the cylinder head.
  • Such candles also called multi-spark plasma branched candles allow the propagation of a plasma in a volume remote from the surface of the insulation.
  • the creation of sparks then tends to be generated between a central electrode and the combustion chamber, in contact with the second electrode which is the base of the candle.
  • the combustion chamber is then considered from the functional point of view, as the second electrode of the ignition system.
  • the two electrodes are separated by an insulator represented by a tubular piece of insulating material, preferably ceramic, which surrounds the central electrode on a portion of its outer surface.
  • the publication FR2878086 presents this type of candle, where the insulating part between the electrodes has an annular shoulder obscuring the entire toric surface at the end of the base while leaving free the end of the central electrode.
  • This configuration is intended to reduce the risk of creating electrical discharges from the base and propagate along the insulating part along the axis of the central electrode.
  • This mode of obtaining discharges is indeed not desired because it decreases the efficiency of the candle.
  • Alternative embodiments make it possible to reduce the reinforcements of the electric field by eliminating, in particular, the right angles on said shoulder at the origin of electric arcs between the insulating part and the base, which are detrimental to the efficiency of the spark plug.
  • This architecture leads to manufacturing constraints and mounting constraints, it is necessary for example to mount the piece of insulating material in the base in the opposite direction due to the shoulder at the end of the insulating part.
  • the object of the invention is to remedy these drawbacks.
  • the invention has a multi-spark plug where the end of the base side of the candle head is mechanically connected with the insulating part.
  • the invention thus relates to a spark plug intended to equip an internal combustion engine combustion chamber and which comprises a central electrode of cylindrical shape made of a material of conductive type, which comprises an upper end and a lower end, intended to be arranged in the combustion chamber, a substantially tubular shaped part, made of an electrically insulating material which comprises an upper part and a lower part, and which surrounds the central electrode over a portion of its length so that the lower end of the central electrode protrudes from the lower part of the piece of insulating material, a substantially conductive material-type material base which comprises an upper part and a lower part having an end section, and which surrounds the piece of material insulation on a portion of its length so that the lower part of the piece of insulating material protrudes from the bottom of the base.
  • the invention is characterized in that the piece of insulating material comprises an annular groove on its outer periphery, at the lower end of the base, and in that said part is metallized on its entire outer surface from its upper end to at the edge of the groove and in that the lower end portion of the base is disposed in the groove.
  • end section of the cap means a portion of said base located on the border and extending over a few millimeters.
  • the outer surface of the insulating part facing the base is metallized to ensure electrical continuity between the insulating part and the base.
  • the goal is to prevent the creation of electric shocks between the two opposite surfaces.
  • the end portion is disposed in the groove to be thus inserted in part of the insulating part, and is thus obscured with respect to the lower end of the central electrode. Problems related to metallization stoppage of the insulating part at the lower end of the base are reduced or even eliminated.
  • the width and the depth of the annular groove of the insulating part are adapted so that the free section of the lower end portion of the cap is completely contained in the groove.
  • the dimensions of the groove are defined so that the bottom end section of the cap is buried in the groove.
  • the burial of said section makes it possible to guarantee good mechanical resistance of the spark plug to the pressure level in the combustion chamber, especially since it is produced by mechanical deformation.
  • the annular groove of the piece of insulating material contains electrically insulating cement.
  • the cement promotes the contacts between the end of the base once deformed and the insulating part.
  • the purpose is to ensure good heat dissipation of the insulating part to the base and to the cylinder head, and also to seal the candle, while concealing the end of the cap relative to the electrode Central.
  • the lower end section of the base is of reduced thickness.
  • the lower section of the end section is intended to be embedded in the annular groove filled with cement.
  • the reduced thickness of the section facilitates the insertion, in particular by deformation, of the section and the flooding of the end section in the annular groove.
  • the inner diameter of the lower portion of the base is substantially equal to the outer diameter of the lower part of the piece of insulating material.
  • the inner surface of the insulating part surrounding the central electrode is metallized.
  • the inner surface of the metallized insulating piece and the central electrode are in contact and are therefore at the same potential.
  • the insulating part is of single-body type and comprises two central bores of different diameters, the first for the positioning of an inductance coil, and the second for the positioning of the central electrode.
  • the number of parts constituting the candle is reduced and their assembly is facilitated.
  • the base comprises a first bore in the upper part and a second bore in the lower part, coaxial and of different diameters, and the assembly formed by the piece.
  • of insulating material and the central electrode is fitted into the base by the upper portion of the base, and fixed in the base by gluing, with a preferably ceramic glue deposit, in the bottom of the first bore of the upper portion of the base.
  • the base comprises two bores of substantially different diameters, a first bore in the upper portion of diameter greater than that of the second bore in the lower part.
  • This configuration allows easy mounting by interlocking the insulating part in the / base by the upper part of the base.
  • Gluing is preferably performed by a glue deposit in the bottom of the first bore in the upper portion of the base to ensure a tight and homogeneous bonding.
  • the method of manufacture of the candle according to the invention comprises a step of filling the annular groove with preferably ceramic cement, followed by a step of mechanical deformation of the lower end section of the base towards the bottom of the throat.
  • the annular groove is filled with cement, then the end portion is deformed towards the bottom of the groove, which ensures good contact between the cement and the end portion of the base.
  • the manufacturing method of the invention comprises a step of grinding the cement surface of the annular groove of the insulating part, after drying the cement, to avoid any overflow of material.
  • the bottom end section of the pellet is poured into the groove filled with ceramic cement. After drying the cement, the cement surface at the throat is ground to remove any sharp angles and obstacles and to reduce the risk of arcing on the lower end surface of the insulating part.
  • a conical induction coil comprising an upper part and a lower part with a spring bushing at its lower end is inserted into the central bore in the upper part of the insulating part.
  • the conical bore in the upper part of the insulating part is adapted to accommodate the induction coil, which makes mounting simple, while reducing the size of the device.
  • the conical induction coil is fixed to the insulating part by bonding on its peripheral outer surface.
  • the conical induction coil being introduced into the conical bore in the upper part of the insulating part, the adhesive on the peripheral surface of the coil makes it possible to ensure a contact without vacuum between the coil and the insulating part thanks to the conicity of the the assembly, while ensuring the fixing of said coil vis-à-vis the insulating part.
  • the spring bushing is engaged on the upper end of the central electrode, at the end of sliding of the coil in the central bore of the insulating part.
  • the socket is adapted to be connected to the upper end of the central electrode, which simplifies assembly of the assembly.
  • an electrode 10 of substantially cylindrical form of conductive material and comprising an upper end 18 and a lower end 17 intended to be in contact with the gaseous mixture, is maintained by any means (brazing, bonding, sintering, etc.) ensuring a contact, in a bore of an insulating part 11 so that the lower end 17 of the electrode protrudes from the part 11.
  • the insulating part 11 is of single-body type and comprises two end sections 33 and 35 of substantially tubular shape and of different outside diameters and a third section 34 making the connection between the two sections 33 and 35.
  • the first section 35 surrounds the central electrode 10 on a portion of its outer surface, and has an annular groove 19 near the lower end 17 of the central electrode 10.
  • the second section 33 of substantially larger outside diameter comprises an inner bore 22 slightly conical. The average diameter of this bore is substantially larger than the outer diameter of the central electrode.
  • the inner bore is made such that the upper end 18 of the central electrode 10 opens into this bore.
  • the entire outer surface of the sections 33 and 34 of the insulating part 11 is covered with a layer of metallic material.
  • the outer surface of the section 35 being metallized from its junction with the section 34 to the edge of the annular groove 19, a metallization of a portion of the groove is tolerated because it has no effect on the operation of the spark plug.
  • the inner surface 32 of the insulating part 11 surrounding the central electrode, as represented in FIG. Figures 2 and 3 may be covered with a layer of metallic material.
  • the insulating part 11 is engaged in an envelope of metallic material such as steel which has two bores of different diameters to surround the sections 33 to 35 of the insulating part.
  • This steel casing is the base 12 of the plug and has two sections 36 and 37 of substantially different outer diameters, separated by a groove 30.
  • the section 36 has an outside diameter greater than that of the section 37.
  • the outer surface 29 of the section 37, except the end section 14, is threaded. The latter comprises a lower end section 14 of smaller thickness, as will be explained later.
  • FIG. figure 2 The mounting of the insulator 11 and the electrode 10 in the base 12 is illustrated in FIG. figure 2 .
  • a subset formed of the insulating part 11 and the electrode 10 is introduced through the free end of the section 36 of the base 12 and pushed into a bore 20 towards the inner end of the section 36, the bottom of this bore resumes.
  • a layer 25 of adhesive is preferably disposed on the bottom 24 of this bore to ensure the attachment of the insulating part 11 with the base 12.
  • the deposit glue on the bottom of the first bore 20 of the base guarantees a tight and homogeneous bonding.
  • the candle 1 has the structure illustrated in figure 3 where the lower end section 14 of the base 12 is disposed at the annular groove 26.
  • annular groove 19 is previously filled with uncured ceramic cement 26.
  • the width and the depth of the annular groove 19 of the insulating part are adapted to receive the end section of the section 14 of the base 12 in its entirety.
  • the bottom end section 14 of the base 12, having a reduced section, is then mechanically deformed towards the bottom of the groove 19, preferably by hot or cold crimping, which ensures a good mechanical strength of the subset formed of the base 12 and the insulating part 11.
  • the dimensions of the groove are adapted so that the end section of the portion 14 of the base is completely cast in the cement of the groove after deformation, so that no part of the end section of the section 14 remains in position.
  • end section is meant the axial end surface of the section.
  • the excess ceramic cement 26 which results from this operation is removed.
  • the surface of the groove 19 filled with the ceramic cement is ground after the setting of the cement.
  • the ceramic cement 26 thus ensures a very good contact between the insulating part 11 and the base 12 and also the evacuation of the heat from the insulating part 11 towards the base 12.
  • the ceramic cement 26 also seals the spark plug 1 thus constituted.
  • the spark plug according to the invention comprises a lower end where the central electrode protrudes from the insulating part 11, the latter having close contacts with the central electrode and the base, which also ensures the attachment of the spark plug in the cylinder head.
  • the lower end section of the base is embedded in the groove defined in the insulating part.
  • a cement, preferably ceramic, covers the groove and provides excellent contact between the insulating part and the lower section of the base.
  • This configuration greatly reduces the risks, due to the metallization stopping of the outer surface of the insulating part facing the base, breakdowns between the insulating part and the base and the production of discharges on the surface of the insulator. between the center electrode and the base.
  • This configuration also ensures good mechanical strength of the lower end of the candle, or candle head, intended to be disposed in the combustion chamber, facing high pressures, which may be greater than 100 bar.
  • This configuration also ensures a good heat transfer from the electrode to the insulating part, then to the base and the cylinder head.
  • a coil 15 is wound on a conical mandrel having substantially the same angle as the bore 22 of the second section 33 of the insulating part, approximately 1 to 2 °, and which is shaped to ensure a play free contact with the insulating part 11
  • This coil 15 is thus introduced into the bore 22.
  • It advantageously comprises a spring bushing 16 arranged at the front of the coil in the insertion direction of said coil, the inner diameter of the sleeve being adapted to the diameter of the upper end 18 of the central electrode, and the sleeve being electrically connected to the coil.
  • the wall 28 of the bore 22 in the second section 33 of the insulating part is covered with adhesive, preferably an impregnating resin, for fixing the inductive coil 15 to the workpiece insulating 11, without clearance between the coil 15 and the insulating part 11.
  • adhesive preferably an impregnating resin
  • the sleeve is connected mechanically to the upper end 18 of the central electrode 10, ensuring and the electrical connection between the electrode 10 and the coil 15.
  • the adhesive may be disposed on the coil, or on the two parts to be bonded.
  • the assembled candle is illustrated by the figure 6 .
  • the Figures 7 and 8 illustrate the positioning of said spark plug 1 in a cylinder head 13.
  • a seal 31, preferably metal, is placed in the groove 30 of the base 12 to seal the assembly.
  • the yoke 13 has a bore 42 in the upper part and a bore 43 in the lower part, opening into the combustion chamber, with different diameters.
  • the bore in the lower part is threaded and intended to accommodate the bottom portion 37 threaded base.
  • the spark plug 1 is screwed into the bore 43 of the cylinder head 13, until the O-ring 31 bears against the bottom of the upper bore 42.
  • the spark plug is thus fixed in the cylinder head 13 with the lower end. 17 of the electrode 10 in the combustion chamber, in contact with the gas mixtures.
  • the outer diameter of the lower section 35 of the insulating part 11 is smaller than the inside diameter of the base 12, which allows a mounting of a single-body type insulating part. This assembly is simple by interlocking and fixing by gluing.
  • the invention can be adapted to candles whose insulating part is not of single-body type.
  • the insulating material of the insulating part is preferably a ceramic having a breakdown voltage greater than 20 KV / mm.
  • the metallization of the external and internal surfaces of the insulating part is done by any metallization process, for example by application of metal layers, based on silver or metal alloys, by brush or spray and drying, and then through the workpiece. insulation in a reducing atmosphere furnace.
  • the metallization of the external surfaces of the insulating part may be applied only to the sections 34 and 35, surrounding the central electrode 10.
  • the outer surface of the second section 33 of the insulating part may be surrounded by an envelope of conductive material preferably base of copper or silver or aluminum or gold.
  • the ceramic cement may be a product based on alumina powder.
  • the lower end of the central electrode disposed in the combustion chamber may be of different shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)

Claims (14)

  1. Zündkerze, die dazu bestimmt ist, eine Verbrennungsmotorbrennkammer auszustatten und Folgendes aufweist:
    - eine zentrale Elektrode (10) mit zylindrischer Form, die aus einem leitenden Werkstoff besteht, die ein oberes Ende (18) und ein unteres Ende (17) aufweist, die dazu vorgesehen ist, in der Brennkammer angeordnet zu sein,
    - ein Teil (11) mit im Wesentlichen Röhrenform, aus einem elektrisch isolierenden Material, das einen oberen Teil (33) und einen unteren Teil (35) aufweist, und das die zentrale Elektrode (10) auf einem Abschnitt ihrer Länge derart umgibt, dass das untere Ende (17) der zentralen Elektrode aus dem unteren Teil des Teils aus isolierendem Material vorsteht,
    - einen Sockel (12) aus leitendem Werkstoff mit im Wesentlichen Röhrenform, der einen oberen Teil (36) und einen unteren Teil (37) aufweist, der einen Endabschnitt (14) aufweist und das Teil aus isolierendem Material auf einem Abschnitt seiner Länge derart umgibt, dass der untere Teil des Teils aus isolierendem Material (11) aus dem unteren Teil des Sockels vorsteht,
    dadurch gekennzeichnet, dass das Teil aus isolierendem Material (11) eine ringförmige Hohlkehle (19) auf seinem äußeren Umfang im Bereich des unteren Endes des Sockels aufweist, dass das Teil aus isolierendem Material (11) mit einer Schicht aus metallisiertem Material auf seiner gesamten äußeren Oberfläche von seinem oberen Ende bis zum Rand der Hohlkehle (19) überzogen ist, und dass der untere Endabschnitt (14) des Sockels (12) in der Hohlkehle (19) angeordnet ist.
  2. Zündkerze nach Anspruch 1, dadurch gekennzeichnet, dass der untere Endabschnitt (14) des Sockels (12) in der Hohlkehle (19) durch mechanische Verformung angeordnet ist.
  3. Zündkerze nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Breite und die Tiefe der ringförmigen Hohlkehle (19) des isolierenden Teils (11) derart angepasst sind, dass der freie Abschnitt des unteren Endabschnitts (14) des Sockels (12) vollständig in der Hohlkehle (19) enthalten ist.
  4. Zündkerze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ringförmige Hohlkehle (19) des Teils aus isolierendem Material elektrisch isolierenden Zement (26) enthält.
  5. Zündkerze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der untere Endabschnitt (14) des Sockels (12) verringerte Stärke aufweist.
  6. Zündkerze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innendurchmesser des unteren Teils (37) des Sockels im Wesentlichen gleich dem Außendurchmesser des unteren Teils (35) des Teils aus isolierendem Material (11) ist.
  7. Zündkerze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die innere Oberfläche des isolierenden Teils gegenüber der zentralen Elektrode metallisiert ist.
  8. Zündkerze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das isolierende Teil (11) des Typs aus einem Körper ist und zwei zentrale Bohrungen mit unterschiedlichen Durchmessern aufweist, der erste zum Positionieren einer Induktanzrolle, und der zweite zum Positionieren der zentralen Elektrode.
  9. Herstellungsverfahren einer Zündkerze, die Folgendes aufweist:
    - eine zentrale Elektrode (10), die aus einem leitenden Werkstoff besteht, mit zylindrischer Form, gebildet aus einem leitenden Werkstoff, die ein oberes Ende (18) und ein unteres Ende (17) aufweist,
    - ein Teil (11) mit im Wesentlichen Röhrenform, aus einem elektrisch isolierenden Material, das einen oberen Teil (33) und einen unteren Teil (35) aufweist, das die zentrale Elektrode (10) auf einem Abschnitt ihrer Länge derart umgibt, dass das untere Ende (17) der zentralen Elektrode aus dem unteren Teil des Teils aus isolierendem Material vorsteht, und das eine ringförmige Hohlkehle (19) auf dem äußeren Umfang seines unteren Teils aufweist,
    - einen Sockel (12) aus leitendem Werkstoff mit im Wesentlichen Röhrenform, der einen oberen Teil (36) und einen unteren Teil (37) aufweist, der einen Endabschnitt (14) aufweist und das Teil aus isolierendem Material auf einem Abschnitt seiner Länge derart umgibt, dass der untere Teil des Teils aus isolierendem Material (11) aus dem unteren Teil des Sockels vorsteht,
    dadurch gekennzeichnet, dass:
    - der Sockel eine erste Bohrung im oberen Teil (36) und eine zweite Bohrung im unteren Teil (37) koaxial und mit unterschiedlichen Durchmessern aufweist,
    - die äußere Oberfläche des isolierenden Teils mit einer Metallschicht ab seinem oberen Teil (33) bis zum Rand der ringförmigen Hohlkehle (19) überzogen ist,
    - die Einheit, die aus dem isolierenden Teil (11) und der zentralen Elektrode (10) gebildet ist, in den Sockel (12) vom oberen Ende des Sockels her eingerastet und in dem Sockel (12) durch Kleben mit einer Ablagerung vorzugsweise keramischen Klebstoffs im Grund der ersten Bohrung des oberen Teils (36) des Sockels (12) befestigt ist,
    - der untere Endabschnitt (14) des Sockels (12) in der Hohlkehle (19) mechanisch verformt ist.
  10. Herstellungsverfahren einer Zündkerze nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es einen Schritt des Füllens der ringförmigen Hohlkehle mit Zement vorzugsweise keramischen Typs aufweist.
  11. Herstellungsverfahren einer Zündkerze nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es einen Schritt des Schleifens der Zementoberfläche der ringförmigen Hohlkehle (19) des isolierenden Teils nach dem Trocknen des Zements aufweist, um jedes Überstehen von Material zu vermeiden.
  12. Herstellungsverfahren einer Zündkerze nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass eine kegelförmige Induktanzrolle (15), die einen oberen Teil und einen unteren Teil mit einer Federhülse (16) an ihrem unteren Ende aufweist, in die zentrale kegelförmige Bohrung (22) im oberen Teil des isolierenden Teils (11) eingefügt ist.
  13. Herstellungsverfahren einer Zündkerze nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die kegelförmige Induktanzrolle (15) an dem isolierenden Teil durch ein Kleben auf ihrer äußeren umfänglichen Oberfläche befestigt ist.
  14. Herstellungsverfahren einer Zündkerze nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Federhülse (16) auf dem oberen Ende der zentralen Elektrode (10) am Ende des Gleitens der Rolle in der zentralen Bohrung (22) des isolierenden Teils (11) eingerastet ist.
EP11779805.8A 2010-10-12 2011-10-06 Kurzschlussschutz bei einer hf-zündkerze Not-in-force EP2628220B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1058282A FR2965984B1 (fr) 2010-10-12 2010-10-12 Prevention contre un court-circuit de la bougie rf
PCT/FR2011/052330 WO2012049403A1 (fr) 2010-10-12 2011-10-06 Prevention contre un court-circuit de la bougie rf

Publications (2)

Publication Number Publication Date
EP2628220A1 EP2628220A1 (de) 2013-08-21
EP2628220B1 true EP2628220B1 (de) 2015-03-25

Family

ID=43977961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11779805.8A Not-in-force EP2628220B1 (de) 2010-10-12 2011-10-06 Kurzschlussschutz bei einer hf-zündkerze

Country Status (6)

Country Link
US (1) US9065256B2 (de)
EP (1) EP2628220B1 (de)
JP (1) JP5902182B2 (de)
CN (1) CN103250311B (de)
FR (1) FR2965984B1 (de)
WO (1) WO2012049403A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964803B1 (fr) * 2010-09-10 2012-08-31 Renault Sa Bougie d'allumage pour moteur a combustion interne
US10056738B2 (en) 2012-03-23 2018-08-21 Federal-Mogul Llc Corona ignition device with improved electrical performance
US10056737B2 (en) 2012-03-23 2018-08-21 Federal-Mogul Llc Corona ignition device and assembly method
US9088136B2 (en) 2012-03-23 2015-07-21 Federal-Mogul Ignition Company Corona ignition device with improved electrical performance
WO2014179649A1 (en) * 2013-05-03 2014-11-06 Federal-Mogul Ignition Company Corona ignition with hermetic combustion seal
DE102013226667B4 (de) 2013-12-19 2018-03-01 Robert Bosch Gmbh Zündkerze mit Dichtung aus einem nichtleitenden Material
KR20180042345A (ko) * 2015-08-20 2018-04-25 페더럴-모걸 엘엘씨 코로나 점화 장치 및 조립 방법
US10211605B2 (en) 2016-01-22 2019-02-19 Tenneco Inc. Corona igniter with hermetic combustion seal on insulator inner diameter
EP3501072A1 (de) * 2016-08-18 2019-06-26 Tenneco Inc. Koronazündungsvorrichtung und montageverfahren
US10578073B2 (en) 2017-04-11 2020-03-03 Tenneco Inc. Igniter assembly, insulator therefor and methods of construction thereof
JP6666371B2 (ja) * 2017-10-11 2020-03-13 日本特殊陶業株式会社 スパークプラグ
US10879677B2 (en) 2018-01-04 2020-12-29 Tenneco Inc. Shaped collet for electrical stress grading in corona ignition systems
JP6678199B2 (ja) * 2018-05-23 2020-04-08 日本特殊陶業株式会社 スパークプラグ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989660A (en) * 1953-09-29 1961-06-20 Bendix Corp Electrical apparatus
FR2796767B1 (fr) * 1999-07-21 2001-08-31 Renault Bougie a effet de surface
FR2816119B1 (fr) * 2000-10-27 2003-02-21 Renault Bougie a effet de surface a etincelle radiale
FR2878086B1 (fr) 2004-11-16 2007-03-09 Renault Sas Bougie a plasma radiofrequence
FR2881281B1 (fr) * 2005-01-26 2011-04-22 Renault Sas Bougie a generation de plasma
FR2892240B1 (fr) * 2005-10-18 2010-10-22 Renault Sas Bougies d'allumage pour le moteur a combustion interne d'un vehicule automobile
FR2893455B1 (fr) * 2005-11-14 2007-12-14 Renault Sas Bougie d'allumage pour moteur a combustion interne

Also Published As

Publication number Publication date
FR2965984B1 (fr) 2012-10-12
JP2013539903A (ja) 2013-10-28
EP2628220A1 (de) 2013-08-21
US20130234581A1 (en) 2013-09-12
WO2012049403A1 (fr) 2012-04-19
FR2965984A1 (fr) 2012-04-13
JP5902182B2 (ja) 2016-04-13
CN103250311A (zh) 2013-08-14
CN103250311B (zh) 2015-02-18
US9065256B2 (en) 2015-06-23

Similar Documents

Publication Publication Date Title
EP2628220B1 (de) Kurzschlussschutz bei einer hf-zündkerze
EP1815570B1 (de) Funkfrequenz-plasmazündkerze
FR2831243A1 (fr) Bougie de prechauffage pour un moteur diesel et procede de fabrication associe
EP1920510B1 (de) Plasmazündkerze für einen verbrennungsmotor
EP2210079B1 (de) Vergaservorrichtung mit eingebautem verbrennungssensor
FR2865264A1 (fr) Bougie de prechauffage et procede de fabrication d'une telle bougie
EP1594201B1 (de) Gleitfunkenzündkerze mit mehreren Funken
EP1202411B1 (de) Gleitentladungszündkerze mit radialem Funken
FR2862445A1 (fr) Bougie d'allumage possedant une pluralite d'electrodes centrales
WO2006136742A1 (fr) Bougie d'allumage pour moteur a combustion interne
EP1625601B1 (de) Verfahren zur herstellung einer einzelzündspule und so erhaltene spule
EP2559119B1 (de) Zündkerze mit vorrichtung zur vermeidung von kurzschlüssen
FR2886776A1 (fr) Electrode notamment d'une bougie d'allumage de moteur a combustion interne
FR2949538A1 (fr) Bougie de prechauffage et procede de fabrication d'une telle bougie
FR2982711A1 (fr) Bougie d'allumage
FR2762442A1 (fr) Bobine d'allumage pour l'alimentation d'une bougie de moteur thermique
FR2995460A1 (fr) "bougie d'allumage de type a etincelle radiofrequence a amorce de rupture integree"
FR2861509A1 (fr) Bougie d'allumage a effet de surface a etincelle dirigee.
BE426046A (de)
FR2976133A1 (fr) Bougie d'allumage comprenant une piece isolante formee de deux materiaux de permittivite dielectrique differente.
FR2805093A1 (fr) Bougie d'allumage et son procede de fabrication
CH549884A (fr) Bougie d'allumage.
FR2899393A1 (fr) Bougie de generation de plasma radiofrequence pour un moteur a combustion interne

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

17P Request for examination filed

Effective date: 20130408

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20141020

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011015089

Country of ref document: DE

Effective date: 20150507

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 718375

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150515

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

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 718375

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150325

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150626

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

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

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150727

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150725

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011015089

Country of ref document: DE

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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: 20160105

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151006

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: CH

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

Effective date: 20151031

Ref country code: LI

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

Effective date: 20151031

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

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

Ref country code: IE

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

Effective date: 20151006

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

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150625

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111006

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: BE

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

Effective date: 20151031

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

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150325

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

Ref country code: GB

Payment date: 20211022

Year of fee payment: 11

Ref country code: DE

Payment date: 20211020

Year of fee payment: 11

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

Ref country code: FR

Payment date: 20211022

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011015089

Country of ref document: DE

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

Effective date: 20221006

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

Ref country code: FR

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

Effective date: 20221031

Ref country code: DE

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

Effective date: 20230503

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: 20221006