EP1875571A1 - Bougie a génération de plasma - Google Patents
Bougie a génération de plasmaInfo
- Publication number
- EP1875571A1 EP1875571A1 EP06709445A EP06709445A EP1875571A1 EP 1875571 A1 EP1875571 A1 EP 1875571A1 EP 06709445 A EP06709445 A EP 06709445A EP 06709445 A EP06709445 A EP 06709445A EP 1875571 A1 EP1875571 A1 EP 1875571A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulator
- electrode
- candle
- gap
- spark plug
- 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
- 239000012212 insulator Substances 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 230000005284 excitation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- 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
- H01T13/36—Sparking plugs characterised by features of the electrodes or insulation characterised by the joint between insulation and body, e.g. using cement
-
- 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
Definitions
- the invention relates to a plasma generating plug of the type used for spark ignition engines.
- FIG. 3 shows such a candle 1 comprising a base 2 of tubular shape, containing a dielectric insulator 3.
- the base 2 forms an electrode, generally connected to the ground.
- the isolator 3 comprises a central bore 30 in which is housed a central electrode 4.
- the isolator 3 separates the electrodes 2, 4 in the zone where the distance between them is the lowest; The sparks formed between the electrodes are thus guided on the surface of the insulator.
- the parts of the candle are assembled by interlocking. There is then a gap between them. In particular, there is a gap Jl between the base 2 and the insulator 3, and a gap J2 between the insulator 3 and the central electrode 4. It is found that sparks propagate in these interstices when the central electrode of the candle is powered with a high voltage radio frequency. This leads to an expenditure of energy which is not used to the useful function of the spark which is to ignite the gaseous mixture near the candle.
- the insulator to be at a relatively high temperature, for example 400 ° C.
- the carbon deposits disturb the proper functioning of the candle, creating current leakage lines. At this temperature, the carbonaceous deposits are destroyed by pyrolysis. By filling in gaps Jl and J2, the thermal resistances between the parts are reduced. The parts are therefore at more homogeneous temperatures, generally lower than that desired for the insulator.
- the candle is usually screwed by one of the electrodes in the cylinder head of the engine, itself cooled by the circulation of a coolant.
- the object of the invention is a radiofrequency plasma generation candle having at least two elements, one of the elements being a first metal electrode and the other being an insulator, one of the elements having a housing in which the other is mounted with a gap.
- the surface of the insulator facing the first electrode is metallized.
- the insulator and the electrode are housed one inside the other, contact inevitably occurs between the metal coating of the insulator and the electrode.
- the surfaces facing each other and separated by the gap are therefore at the same potential, which has the effect of preventing the spread of sparks in this area.
- the sparks thus occur entirely outside the insulator and serve entirely for igniting the surrounding gases.
- the partial metallization of the insulator makes it possible to reduce the point accumulation of electric charges, and thus to improve the resistance of the insulator. the insulator to breakdown phenomena. The insulator thus supports higher voltages.
- the candle according to the invention also retains the gap between the insulator and the electrode.
- the differential expansions do not induce mechanical stresses and the choice of materials for the electrode and the insulator is not constrained by the desire to avoid differential expansions.
- the interstice creates a thermal resistance between the insulator and the electrode, which avoids homogenizing their temperature. Even if the electrode is cooled by the fact that it is fixed to a solid element of the motor, the insulator is not cooled so intensely and can have a higher temperature, suitable for the pyrolysis of any carbonaceous deposits.
- the first electrode is cylindrical and housed in a bore of the insulator.
- the metallized portion is then the bore of the insulator.
- the spark plug has a second electrode surrounding the insulator, the surface of the insulator facing the second electrode being metallized.
- the insulator is, for example, ceramic.
- FIG. 1 is a sectional view of a plasma generation candle according to one invention
- FIG. 2 is a view of detail II of FIG.
- Figure 3 is a view similar to Figure 1 of a candle according to the prior art, and described above.
- a radiofrequency plasma generation candle 10 according to the invention is shown in FIGS. 1 and 2. It comprises, like the candle according to the prior art, a base 12 of tubular shape, containing a dielectric insulator 13.
- the base 12 forms an electrode, generally connected to the ground.
- the isolator 13 comprises a central bore 130 in which is housed a central electrode 14.
- the insulator is ceramic, for example silicon nitride, but it can be in vitro ceramic, or amorphous material such as quartz.
- the insulator 13 has surfaces coated with a metallization.
- a first zone A extends on a cylindrical part of the insulator facing the base 12.
- a second zone B extends into the bore 130 of the insulator 13. facing the central electrode 14.
- a gap 15 is provided between the base 12 and 13.
- a gap 16 is provided between the central electrode 14 and the insulator 13.
- the interstices have a width of the order of a few hundredths to a few tenths of a millimeter.
- the insulator 13 has a first metal layer 132 which extends over the entire first zone A.
- the insulator 13 comprises a second metal layer 133 which extends over the entire second zone B.
- the metal layers 132, 133 are obtained by any conventional method of ceramic metallization.
- metal salts are deposited on the zones A, B of the insulator 13, in the form of liquid solutions.
- the application is made for example by brush, roller or projection.
- the insulator 13 is passed through a reducing atmosphere furnace, for example with an atmosphere containing hydrogen. In this way, the metal salts are reduced and a thin layer of metal is formed on the zones A, B.
- metal layers 132, 133 are typically of the order of 5 to 50 ⁇ m.
Landscapes
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Discharge Heating (AREA)
- Coating By Spraying Or Casting (AREA)
- Chemical Vapour Deposition (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Plasma Technology (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0500777A FR2881281B1 (fr) | 2005-01-26 | 2005-01-26 | Bougie a generation de plasma |
| PCT/FR2006/050061 WO2006079753A1 (fr) | 2005-01-26 | 2006-01-26 | Bougie a génération de plasma |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1875571A1 true EP1875571A1 (fr) | 2008-01-09 |
| EP1875571B1 EP1875571B1 (fr) | 2010-08-18 |
Family
ID=34955414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06709445A Expired - Lifetime EP1875571B1 (fr) | 2005-01-26 | 2006-01-26 | Bougie a génération de plasma |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7843117B2 (fr) |
| EP (1) | EP1875571B1 (fr) |
| JP (1) | JP4859846B2 (fr) |
| KR (1) | KR101211257B1 (fr) |
| CN (1) | CN101366154B (fr) |
| AT (1) | ATE478456T1 (fr) |
| DE (1) | DE602006016261D1 (fr) |
| ES (1) | ES2347816T3 (fr) |
| FR (1) | FR2881281B1 (fr) |
| WO (1) | WO2006079753A1 (fr) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006033480A1 (de) * | 2006-07-19 | 2008-01-24 | Robert Bosch Gmbh | Zündkerze, insbesondere für hohe Brennraumdrücke |
| FR2959071B1 (fr) * | 2010-04-16 | 2012-07-27 | Renault Sa | Bougie d'allumage equipee de moyens de prevention des courts-circuits |
| DE102010044784A1 (de) * | 2010-06-04 | 2011-12-08 | Borgwarner Beru Systems Gmbh | Zünder zum Zünden eines Brennstoff-Luft-Gemisches in einem Verbrennungsmotor mittels einer Koronaentladung |
| FR2965984B1 (fr) * | 2010-10-12 | 2012-10-12 | Renault Sa | Prevention contre un court-circuit de la bougie rf |
| EP2633593A2 (fr) * | 2010-10-28 | 2013-09-04 | Federal-Mogul Ignition Company | Suppression de la décharge en arc à l'allumage de plasma non thermique |
| EP2645497B1 (fr) * | 2010-11-25 | 2019-11-20 | Ngk Spark Plug Co., Ltd. | Bougie d'allumage plasma haute fréquence |
| WO2012091920A1 (fr) * | 2010-12-14 | 2012-07-05 | Federal-Mogul Ignition Company | Igniteur à effet couronne ayant un isolateur conformé |
| WO2012082868A1 (fr) * | 2010-12-14 | 2012-06-21 | Federal-Mogul Ignition Company | Igniteur à effet couronne avec commande améliorée de l'effet couronne |
| JP5887358B2 (ja) * | 2010-12-29 | 2016-03-16 | フェデラル−モーグル・イグニション・カンパニーFederal−Mogul Ignition Company | 改善された隙間制御を有するコロナ点火装置 |
| CN102155344B (zh) * | 2011-01-21 | 2012-07-04 | 电子科技大学 | 一种微波等离子体汽车发动机点火器 |
| JP5422007B2 (ja) * | 2011-02-16 | 2014-02-19 | 日本特殊陶業株式会社 | プラズマジェット点火プラグ及び点火システム |
| FR2976133A1 (fr) * | 2011-05-31 | 2012-12-07 | Renault Sa | Bougie d'allumage comprenant une piece isolante formee de deux materiaux de permittivite dielectrique differente. |
| US8749126B2 (en) | 2011-06-27 | 2014-06-10 | Federal-Mogul Ignition Company | Corona igniter assembly including corona enhancing insulator geometry |
| JP5385427B2 (ja) | 2011-08-04 | 2014-01-08 | 日本特殊陶業株式会社 | 点火プラグ、及び、点火装置 |
| EP2581998B1 (fr) | 2011-10-14 | 2019-12-18 | Delphi Automotive Systems Luxembourg SA | Bougie d'allumage pour système d'allumage haute fréquence |
| CN103260330B (zh) * | 2012-02-21 | 2015-11-11 | 成都真火科技有限公司 | 一种多阴极中轴阳极电弧等离子体发生器 |
| DE102014112674A1 (de) | 2013-10-24 | 2015-05-13 | Borgwarner Ludwigsburg Gmbh | Korona-Zündeinrichtung |
| US10211605B2 (en) | 2016-01-22 | 2019-02-19 | Tenneco Inc. | Corona igniter with hermetic combustion seal on insulator inner diameter |
| JP6503397B2 (ja) * | 2017-03-28 | 2019-04-17 | 日本特殊陶業株式会社 | 点火プラグ |
| US10879677B2 (en) * | 2018-01-04 | 2020-12-29 | Tenneco Inc. | Shaped collet for electrical stress grading in corona ignition systems |
| JP6741717B2 (ja) * | 2018-04-10 | 2020-08-19 | 日本特殊陶業株式会社 | スパークプラグ |
| CN109538357B (zh) * | 2018-11-19 | 2021-01-01 | 陕西航空电气有限责任公司 | 一种小型半导体电嘴结构及加工方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE290304C (fr) | 1900-01-01 | |||
| US2902747A (en) * | 1959-09-08 | Reiter | ||
| US2605755A (en) * | 1948-11-30 | 1952-08-05 | Harley W Secrist | Spark plug |
| US3345532A (en) * | 1965-04-06 | 1967-10-03 | Gen Motors Corp | Spark plug with the insulator tip coated with a lead oxyhalide |
| US3883762A (en) * | 1974-06-17 | 1975-05-13 | Bendix Corp | Electrical discharge device comprising an insulator body having an electrically semi-conducting coating formed thereon |
| CH624509A5 (fr) * | 1980-05-30 | 1981-07-31 | Espada Anstalt | |
| JPS573386A (en) * | 1980-06-06 | 1982-01-08 | Ngk Spark Plug Co | Plama jet ignition plug |
| JPS60225389A (ja) * | 1984-04-21 | 1985-11-09 | 日本特殊陶業株式会社 | 点火プラグ |
| DE3616640A1 (de) * | 1986-05-16 | 1987-11-19 | Bosch Gmbh Robert | Zuendkerze mit gleitfunkenstrecke |
| DD290304A5 (de) * | 1986-11-04 | 1991-05-23 | Veb Elektrokeramische Werke Sonneberg,De | Zuendkerze fuer verbrennungsmotore |
| US4841925A (en) * | 1986-12-22 | 1989-06-27 | Combustion Electromagnetics, Inc. | Enhanced flame ignition for hydrocarbon fuels |
| JP2729263B2 (ja) * | 1987-11-06 | 1998-03-18 | 株式会社デンソー | 内燃機関用スパークプラグ |
| JPH01286282A (ja) * | 1988-05-12 | 1989-11-17 | Ngk Spark Plug Co Ltd | 引込みギャップ型イグナイタプラグ |
| DE4331269C2 (de) * | 1993-09-15 | 1995-07-13 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Zündkerze mit Gleitfunkenstrecke und nach den Verfahren hergestellte Zündkerzen |
-
2005
- 2005-01-26 FR FR0500777A patent/FR2881281B1/fr not_active Expired - Fee Related
-
2006
- 2006-01-26 ES ES06709445T patent/ES2347816T3/es not_active Expired - Lifetime
- 2006-01-26 DE DE602006016261T patent/DE602006016261D1/de not_active Expired - Lifetime
- 2006-01-26 AT AT06709445T patent/ATE478456T1/de not_active IP Right Cessation
- 2006-01-26 CN CN2006800065372A patent/CN101366154B/zh not_active Expired - Fee Related
- 2006-01-26 JP JP2007552699A patent/JP4859846B2/ja not_active Expired - Fee Related
- 2006-01-26 KR KR1020077019304A patent/KR101211257B1/ko not_active Expired - Fee Related
- 2006-01-26 EP EP06709445A patent/EP1875571B1/fr not_active Expired - Lifetime
- 2006-01-26 WO PCT/FR2006/050061 patent/WO2006079753A1/fr not_active Ceased
- 2006-01-26 US US11/814,855 patent/US7843117B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006079753A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101211257B1 (ko) | 2012-12-11 |
| WO2006079753A1 (fr) | 2006-08-03 |
| EP1875571B1 (fr) | 2010-08-18 |
| CN101366154A (zh) | 2009-02-11 |
| FR2881281A1 (fr) | 2006-07-28 |
| ES2347816T3 (es) | 2010-11-04 |
| US7843117B2 (en) | 2010-11-30 |
| US20090033194A1 (en) | 2009-02-05 |
| FR2881281B1 (fr) | 2011-04-22 |
| JP4859846B2 (ja) | 2012-01-25 |
| JP2008529229A (ja) | 2008-07-31 |
| DE602006016261D1 (de) | 2010-09-30 |
| KR20070097588A (ko) | 2007-10-04 |
| CN101366154B (zh) | 2013-05-22 |
| ATE478456T1 (de) | 2010-09-15 |
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