EP2628220A1 - Short-circuit prevention in an rf spark plug - Google Patents
Short-circuit prevention in an rf spark plugInfo
- Publication number
- EP2628220A1 EP2628220A1 EP11779805.8A EP11779805A EP2628220A1 EP 2628220 A1 EP2628220 A1 EP 2628220A1 EP 11779805 A EP11779805 A EP 11779805A EP 2628220 A1 EP2628220 A1 EP 2628220A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- spark plug
- insulating
- piece
- 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.)
- Granted
Links
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 metallization of the insulator reduces the risk of electrical breakdown between the surfaces facing the insulator and the electrodes. Indeed, because of the contact between the electrodes and the metallized surface of the insulator, the two facing surfaces are at the same potential, which prevents the creation of sparks in this area. Problems appear, however, on the border the metallization zone on the insulator facing the base. Since it is difficult to control the stopping of the metallization just at the lower end of the pellet, two configurations appear which generate both risks of electrical breakdown causing surface sparks between the electrode. Central and the base:
- the metallization stopping exceeds the lower end of the pellet.
- This sharp stop has a "tip” of strengthening the electric field and increases the risk of producing breakdowns on the surface of the insulator between the central electrode and the base connected to the ground.
- the metallization stop is made before the lower end of the base. This configuration can cause discharges between the insulator and the base due to significant differences in potential and the risk of generation of breakdown on the surface of the insulator between the central electrode and the base.
- the object of the invention is to remedy these drawbacks.
- the invention has a multi-incandescent candle 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 edge 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 monaural ⁇ body and comprises two central bores of different diameters, the first for positioning an inductor, and the second for the positioning of the center 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.
- FIG. 1 schematically represents a sectional view of an insulating part and a central electrode of a candle according to the present invention.
- FIGS. 2 and 3 schematically represent a sectional view of the placement of the insulating part in a candle cap.
- FIG. 4 schematically represents a sectional view of the step of deformation of the end of the base.
- FIG. 5 schematically shows a sectional view of the candle when connecting an induction coil.
- FIG. 6 schematically shows a sectional view of the assembled candle.
- Figures 7 and 8 schematically show a sectional view of the multi-spark plasma candle according to the invention during the connection step in the cylinder head.
- an electrode 10 of substantially cylindrical shape made of conductive material, and comprising an upper end 18 and a lower end 17 designed to be in contact with the gaseous mixture is maintained by any means ( brazing, bonding, sintering, etc.) ensuring tight contact in a bore of an insulating member 11 so that the lower end 17 of the electrode protrudes from the workpiece 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 may be covered with a layer of metallic material.
- the insulating part 11 is nested 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. 2 The mounting of the insulator 11 and the electrode 10 in the base 12 is illustrated in FIG. 2.
- a sub-assembly formed of the insulating part 11 and the electrode 10 is introduced through the free end of the section 36. 12 and pushed into a bore 20 towards the inner end of the section 36, the bottom of this bore resumes the beveled shape of the connection section 34 of the insulating part 11.
- An adhesive layer 25 is preferably arranged on the bottom 24 of this bore to ensure the fixing of the insulating part 11 with the base 12.
- the glue deposit on the bottom of the first bore 20 of the base guarantees a tight and homogeneous bonding.
- annular groove 19 is pre-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 lower 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 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, about 1 to 2 °, and which is shaped to ensure contact without clearance 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.
- FIGS. 7 and 8 illustrate the positioning of said spark plug 1 in a cylinder head 13.
- a seal 31, preferably metallic, is put in place in the groove 30 of the cap 12 for 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1058282A FR2965984B1 (en) | 2010-10-12 | 2010-10-12 | PREVENTION AGAINST A SHORT CIRCUIT OF THE RF CANDLE |
PCT/FR2011/052330 WO2012049403A1 (en) | 2010-10-12 | 2011-10-06 | Short-circuit prevention in an rf spark plug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2628220A1 true EP2628220A1 (en) | 2013-08-21 |
EP2628220B1 EP2628220B1 (en) | 2015-03-25 |
Family
ID=43977961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11779805.8A Not-in-force EP2628220B1 (en) | 2010-10-12 | 2011-10-06 | Short-circuit prevention in an rf spark plug |
Country Status (6)
Country | Link |
---|---|
US (1) | US9065256B2 (en) |
EP (1) | EP2628220B1 (en) |
JP (1) | JP5902182B2 (en) |
CN (1) | CN103250311B (en) |
FR (1) | FR2965984B1 (en) |
WO (1) | WO2012049403A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964803B1 (en) * | 2010-09-10 | 2012-08-31 | Renault Sa | IGNITION CANDLE FOR INTERNAL COMBUSTION ENGINE |
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 |
US10056738B2 (en) | 2012-03-23 | 2018-08-21 | Federal-Mogul Llc | Corona ignition device with improved electrical performance |
EP2992578B1 (en) * | 2013-05-03 | 2017-10-25 | Federal-Mogul Ignition Company | Corona ignition with hermetic combustion seal |
DE102013226667B4 (en) | 2013-12-19 | 2018-03-01 | Robert Bosch Gmbh | Spark plug with seal made of a non-conductive material |
EP3338332B1 (en) * | 2015-08-20 | 2021-02-24 | Tenneco Inc. | Corona ignition device and assembly method |
US10211605B2 (en) | 2016-01-22 | 2019-02-19 | Tenneco Inc. | Corona igniter with hermetic combustion seal on insulator inner diameter |
JP7005595B2 (en) * | 2016-08-18 | 2022-01-21 | テネコ・インコーポレイテッド | Corona igniter and assembly method |
US10578073B2 (en) | 2017-04-11 | 2020-03-03 | Tenneco Inc. | Igniter assembly, insulator therefor and methods of construction thereof |
JP6666371B2 (en) * | 2017-10-11 | 2020-03-13 | 日本特殊陶業株式会社 | Spark plug |
US10879677B2 (en) | 2018-01-04 | 2020-12-29 | Tenneco Inc. | Shaped collet for electrical stress grading in corona ignition systems |
JP6678199B2 (en) * | 2018-05-23 | 2020-04-08 | 日本特殊陶業株式会社 | Spark plug |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2989660A (en) * | 1953-09-29 | 1961-06-20 | Bendix Corp | Electrical apparatus |
FR2796767B1 (en) * | 1999-07-21 | 2001-08-31 | Renault | SURFACE CANDLE |
FR2816119B1 (en) * | 2000-10-27 | 2003-02-21 | Renault | RADIAL SPARKLE SURFACE CANDLE |
FR2878086B1 (en) * | 2004-11-16 | 2007-03-09 | Renault Sas | PLASMA RADIOFREQUENCY CANDLE |
FR2881281B1 (en) * | 2005-01-26 | 2011-04-22 | Renault Sas | PLASMA GENERATION CANDLE |
FR2892240B1 (en) * | 2005-10-18 | 2010-10-22 | Renault Sas | IGNITION CANDLES FOR THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE |
FR2893455B1 (en) * | 2005-11-14 | 2007-12-14 | Renault Sas | IGNITION CANDLE FOR INTERNAL COMBUSTION ENGINE |
-
2010
- 2010-10-12 FR FR1058282A patent/FR2965984B1/en not_active Expired - Fee Related
-
2011
- 2011-10-06 EP EP11779805.8A patent/EP2628220B1/en not_active Not-in-force
- 2011-10-06 US US13/879,212 patent/US9065256B2/en not_active Expired - Fee Related
- 2011-10-06 JP JP2013533257A patent/JP5902182B2/en not_active Expired - Fee Related
- 2011-10-06 CN CN201180058972.0A patent/CN103250311B/en not_active Expired - Fee Related
- 2011-10-06 WO PCT/FR2011/052330 patent/WO2012049403A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012049403A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2013539903A (en) | 2013-10-28 |
JP5902182B2 (en) | 2016-04-13 |
US20130234581A1 (en) | 2013-09-12 |
FR2965984B1 (en) | 2012-10-12 |
EP2628220B1 (en) | 2015-03-25 |
WO2012049403A1 (en) | 2012-04-19 |
US9065256B2 (en) | 2015-06-23 |
FR2965984A1 (en) | 2012-04-13 |
CN103250311A (en) | 2013-08-14 |
CN103250311B (en) | 2015-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2628220B1 (en) | Short-circuit prevention in an rf spark plug | |
EP1815570B1 (en) | Radiofrequency plasma spark plug | |
FR2893455A1 (en) | IGNITION CANDLE FOR INTERNAL COMBUSTION ENGINE | |
EP1920510B1 (en) | Plasma spark plug for an internal combustion engine | |
FR2831243A1 (en) | Preheating plug for Diesel internal combustion engine has liner with heating element at one end and connector cap at other | |
EP2210079B1 (en) | Spark ignition device with in-built combustion sensor | |
EP1594201B1 (en) | Multiple spark surface discharge spark plug | |
FR2862445A1 (en) | IGNITION CANDLE HAVING A PLURALITY OF CENTRAL ELECTRODES | |
EP1625601B1 (en) | Method of producing an individual ignition coil and coil thus obtained | |
EP2526595B1 (en) | Spark plug, ignition system, engine and ignition method for the engine | |
EP2559119B1 (en) | Spark plug provided with a means for preventing short circuits | |
FR2886776A1 (en) | ELECTRODE IN PARTICULAR FROM AN INTERNAL COMBUSTION ENGINE IGNITION CANDLE | |
FR2982711A1 (en) | Spark plug for use on combustion chamber of internal combustion engine of vehicle, has insulator extending longitudinally from stopper to vicinity of free end of electrode, and coil fixed on external part of internal hollow wall | |
FR2762442A1 (en) | Coil feed for thermal motor spark plug | |
EP3143333A1 (en) | Preheater electrode and method for the production thereof | |
FR2805093A1 (en) | SPARK PLUG AND MANUFACTURING METHOD THEREOF | |
FR2976133A1 (en) | Spark plug for use in combustion chamber of internal combustion engine of car, has insulating part including parts formed of dielectric permittivity material that is similar to material of organic fluid insulator | |
BE426046A (en) | ||
FR2861509A1 (en) | SURFACE SPARKING IGNITION CANDLE WITH DIRECTED SPARK. | |
FR2899393A1 (en) | High voltage central electrode for radiofrequency plasma generation spark plug, has stem connected to plug`s coil, where electrode is made of nickel and coil has one end turn connected to inner end of electrode by connection system | |
FR2995460A1 (en) | Multi-filament radio frequency sparking type spark plug for positive ignition thermal engine, has starter arranged in determined zone such that rupture of body under pressure does not present risks for operator during tightening process |
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 |