EP0913897A1 - Bougie d'allumage pourdispositif d'allumage à jet de plasma - Google Patents
Bougie d'allumage pourdispositif d'allumage à jet de plasma Download PDFInfo
- Publication number
- EP0913897A1 EP0913897A1 EP98117582A EP98117582A EP0913897A1 EP 0913897 A1 EP0913897 A1 EP 0913897A1 EP 98117582 A EP98117582 A EP 98117582A EP 98117582 A EP98117582 A EP 98117582A EP 0913897 A1 EP0913897 A1 EP 0913897A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spark plug
- section
- combustion chamber
- plasma
- field lines
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 239000012212 insulator Substances 0.000 claims description 27
- 230000003628 erosive effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010891 electric arc Methods 0.000 claims description 2
- 239000005350 fused silica glass Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 5
- 210000002381 plasma Anatomy 0.000 description 41
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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
- H01T13/50—Sparking plugs having means for ionisation of gap
Definitions
- the present invention relates to a spark plug for a plasma jet ignition device according to the preamble of claim 1.
- increasing Requirements for internal combustion engines due to environmental protection, such as reduced Pollutant emissions and better use of the fuel, above all, can be achieve that the engine is operated in the so-called lean area, that is in the area of a Reduction of the proportion of fuel in the air-fuel mixture.
- the engine in stratified operation i.e. with an inhomogeneous mixture distribution.
- One way of improving ignition behavior is to use a plurality of Arrange ignition electrodes in the combustion chamber at the same time and with the ignition voltage act upon.
- Such ignition systems form several flame cores at the same time and reach an ignition zone of greater extension, which is a safe ignition also allow problematic mixture systems. This is particularly disadvantageous high design effort to provide suitable spark plugs as well as the required Installation space on the engine itself.
- Ignition methods for the ignition of fuel-air mixtures are also included Internal combustion engines are known in which with the help of plasma discharges thermal energy is introduced into the combustion chamber and the mixture is thereby ignited.
- plasma ignitions one protrudes into a combustion chamber Electrode ignited the mixture located in the combustion chamber in that the mixture through a high-frequency field of sufficient energy to a reactive temperature is brought in by the gas introduced into the combustion chamber by the electrode High-frequency field enters the electrically conductive plasma state.
- This is done at known devices such a plasma in the combustion chamber of a narrow Internal combustion engine generated and by varying the energy supplied or Frequency of the high-frequency field applied to the electrode the required Ignition temperature for the mixture in a determinable by the electrode geometry Room volume provided.
- All known plasma jet ignition devices are included common that the formation of the plasma is spatially limited near the electrode takes place and therefore the spread of the flame front is not fundamentally different than in conventional spark plugs and therefore not fast for all engine operating states enough is done.
- DE 40 28 869 A1 describes a spark plug for such a plasma jet ignition system proposed to achieve a sufficiently high energy density of the plasma the plasma discharge only in one in the electrode body of the spark plug ignition chamber arranged in the back is generated, thereby acting on larger ones Area of the mixture and thus an increase in ignition reliability only indirectly Ejection of ionized particles from the ignition chamber into the combustion chamber is possible.
- the design of the electrode shape can be varied, whereby the shape of the Ignition chamber should be optimized with regard to the ignition behavior.
- Can also be on the electrodes are provided with a heat-resistant electrical insulating layer which but is only used to protect against sparking.
- the spark plug according to the invention as claimed in claim 1 is used in particular a method for operating a plasma jet ignition device in Internal combustion engines, as in a parallel application by the same applicant is described, which is also fully the subject of this application becomes.
- This plasma jet ignition device has at least one area inside a Combustion chamber of an internal combustion engine arranged spark plug with at least an electrode.
- This electrode is electrical with a high frequency generator connected, being in a fuel-air mixture in the combustion chamber by one of a high-frequency field provided to the high-frequency generator is generated.
- the high-frequency field is regulated to a high voltage so that the Electrode in the fuel-air mixture simultaneously a plurality of high-resistance Form plasma threads of short duration.
- Plasma discharges are a number of short-term and intense plasma threads formed, which lead to short-term, intense discharges of the plasma and many Flame cores in the fuel-air mixture cause, which makes a special good ignition behavior of the fuel-air mixture can be achieved. It will High-frequency field operated such that the fuel-air mixture in the Combustion chamber-formed plasma is not thermally in equilibrium. It is due the high frequency achieved that short-term, local high-resistance plasma discharges in Form the form of plasma threads, the intense flame cores for igniting the fuel-air mixture cause.
- plasma threads only work for a short time, but they do due to their number in the area adjacent to the electrode at high Potential differences are particularly intense.
- a generic spark plug according to claim 1, preferably for use with a Such plasma jet ignition device is characterized in that the inner electrode its combustion chamber end an electrically conductive, the field lines of Has high-frequency field bundling section, which is opposite to the combustion chamber an insulator layer is covered.
- the design of the electrode end by a the electrically conductive section that bundles the field lines of the high-frequency field calls the high-resistance plasma discharges, which reliably ignite fuel-air mixtures even further away from the electrode end within the combustion chamber favored.
- this is subject to the field lines of the high-frequency field Section and in particular its fuel-air mixture tapered end normally a high load due to the high impedance Plasma discharges and combustion.
- the field lines of the high-frequency field bundling section of the inner electrode the shape of at least one to the Bennraum tapered tip area.
- this top area are formed by the connected field line density from high local field strengths, which the electrical discharge enable and initiate the formation of flame nuclei.
- leads advantageous taper not to disturb the field lines or the high-frequency field due to arcing, for example, due to interference radiation negatively on electronic Devices in the vicinity of the internal combustion engine could act.
- the one that bundles the field lines of the high-frequency field Section of the inner electrode several, tapering to the combustion chamber, diverging have tip regions arranged to each other. This is due to the Radio frequency field is not just a single starting point for the emergence of a provided high-resistance plasma, but according to the number of such peaks can form a larger volume area with high-resistance plasma, which leads to a large-volume and thus improved ignition and combustion of the fuel-air mixture contributes.
- At least the insulator layer in the area of the Field lines of the high-frequency field bundling section of the inner electrode from one material resistant to erosion and electrical erosion. This will make the Covering the section very resistant to stresses arising from operation the internal combustion engine and the formation of the plasma and the combustion in the combustion chamber.
- Typical insulator materials can be used as the insulator material Find use that is used in spark plug construction or in electrical insulation construction become.
- the covering insulator layer consists of a thin layer exists, which is easily enforceable by the field lines. This will create the Plasmas not hindered by the field lines of the radio frequency field, so that by the Covering this section does not affect the ignition properties of the Spark plug is caused.
- the isolator and the covering can Insulator layer made of an aluminum oxide, in another embodiment made of quartz glass (fused silica) exist.
- the spark plug can be designed as a lifetime Internal combustion engine functional spark plug to be designed, whereby especially cost-intensive change and maintenance processes during the service life the internal combustion engine can be avoided.
- spark plug according to claim 1 in lean-burn engines Stratified charge engines or diesel engines are used, as this causes the mixture to ignite these ignition-problematic engines can be significantly improved.
- FIG Drawing A particularly advantageous embodiment of the spark plug according to the invention is shown in FIG Drawing.
- FIG. 1 is a schematic representation of an inventive Spark plug shown in a partial view in section.
- the spark plug is only shown with its section facing the combustion chamber 7 since it otherwise the known spark plugs can correspond essentially and only that Design of the combustion chamber side section is important in the context of this invention.
- the spark plug consists of one arranged here along the screw axis Inner conductor 1, which consists of an electrically conductive material and on the connection side the spark plug with a connection to an ignition cable or the like. in electrical connection stands.
- the inner conductor 1 is surrounded by an insulator 2 made of a preferably ceramic material in the form of a thick-walled, essentially tubular component, in the Inner bore of the inner conductor 1 is used.
- a ground-leading housing electrode 4 which is on its outside carries a thread 11 with which the spark plug in a manner not known in principle illustrated threaded hole z. B. an internal combustion engine and can be set.
- the ground-leading housing electrode 4 and the inner electrode 1 form a pair of electrodes, as is also known in conventional spark plugs.
- the thick-walled insulator 2 the two electrodes 1, 4 are separated from each other, so that maintain the electrical potential difference between the two electrodes 1, 4 remains.
- the insulator 2 also has a profile 5 as protection against Leakage currents, which is also provided on conventional spark plugs.
- the design of the spark plug according to the invention can be seen in the section here furthest into the combustion chamber 7 of the internal combustion engine.
- the inner electrode 1 here forms an arrangement of z. B. three diverging and pointing in different directions of the combustion chamber 7 tips 3 that each from the node at which they are connected to the inner electrode 1 stand, taper towards the combustion chamber 7.
- the inner electrode 1 three at the same electrical potential 3 peaks, at which this is in the Can generate fuel-air mixture plasma 6.
- Spark plug according to the invention is that the electrode tips 3 of a thin layer 10 are coated from an insulator material, which the electrode tips 3 of the in Combustion chamber 7 located plasma 6 and the fuel-air mixture separates.
- the layer thickness of the the electrode tips 3 covering insulator 10 are chosen so that the formation of the Plasma 6 is not due to the high-frequency field that passes through the insulator layer 10 is hindered.
- the inner electrode 1 will also operate after a long period of operation unchanged covered with the insulator 10 and thus protected against wear. Also is through the covering insulator layer 10 on which the field lines of the radio frequency field bundling section 9 prevents arcing in the thermally not in Form equilibrium plasma 6.
- the insulator layer 10 covering the electrode tips 3 can, for example, consist of one Alumina or quartz glass exist.
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19747700A DE19747700C2 (de) | 1997-10-29 | 1997-10-29 | Zündeinrichtung mit einer Zündelektrode |
| DE19747700 | 1997-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0913897A1 true EP0913897A1 (fr) | 1999-05-06 |
| EP0913897B1 EP0913897B1 (fr) | 2002-06-26 |
Family
ID=7846950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98117582A Expired - Lifetime EP0913897B1 (fr) | 1997-10-29 | 1998-09-16 | Bougie d'allumage pourdispositif d'allumage à jet de plasma |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0913897B1 (fr) |
| DE (2) | DE19747700C2 (fr) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215392A3 (fr) * | 2000-12-12 | 2003-03-19 | Volkswagen AG | Elément et dispositif pour coupler de l'énergie à un espace rempli avec un milieu déterminé |
| FR2858024A1 (fr) * | 2003-07-25 | 2005-01-28 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage d'un melange air/carburant |
| FR2859831A1 (fr) * | 2003-09-12 | 2005-03-18 | Renault Sa | Bougie de generation de plasma. |
| US6953032B2 (en) | 2001-11-29 | 2005-10-11 | Simon Lucas Goede | Combustion engine and ignition circuit for a combustion engine |
| WO2007090380A1 (fr) * | 2006-02-07 | 2007-08-16 | Fachhochschule Aachen | Système d'allumage à haute fréquence pour véhicules automobiles |
| US20100282197A1 (en) * | 2009-05-04 | 2010-11-11 | Federal-Mogul Corporation | Corona tip insulator |
| CN103262370A (zh) * | 2010-12-14 | 2013-08-21 | 费德罗-莫格尔点火公司 | 具有特定形状的绝缘体的电晕点火器 |
| US8729782B2 (en) | 2010-10-28 | 2014-05-20 | Federal-Mogul Ignition | Non-thermal plasma ignition arc suppression |
| CN105981243A (zh) * | 2014-02-26 | 2016-09-28 | 通用汽车环球科技运作有限责任公司 | 等离子体点火装置 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004039406A1 (de) | 2004-08-13 | 2006-02-23 | Siemens Ag | Plasma-Zünd-Verfahren und -Vorrichtung zur Zündung von Kraftstoff/Luft-Gemischen in Verbrennungskraftmaschinen |
| US20090025669A1 (en) | 2007-07-25 | 2009-01-29 | Gerald Filipek | Heat source supplied glow plug/plasma torch and optional spark plasma torch for accomplishing more efficient piston combustion |
| DE102010045171B4 (de) | 2010-06-04 | 2019-05-23 | Borgwarner Ludwigsburg Gmbh | Zünder zum Zünden eines Brennstoff-Luft-Gemisches in einer Verbrennungskammer, insbesondere in einem Verbrennungsmotor, durch Erzeugen einer Korona-Entladung |
| DE102010045175B4 (de) * | 2010-09-04 | 2014-03-27 | Borgwarner Beru Systems Gmbh | Zünder zum Zünden eines Brennstoff-Luft-Gemisches mittels einer HF-Korona-Entladung und Motor mit solchen Zündern |
| DE102010045170B3 (de) * | 2010-09-04 | 2012-01-26 | Borgwarner Beru Systems Gmbh | Korona-Zündeinrichtung und Verfahren zu ihrer Herstellung |
| DE102011102016A1 (de) | 2011-05-19 | 2012-11-22 | Borgwarner Beru Systems Gmbh | Korona-Zündeinrichtung und Verfahren zu ihrer Herstellung |
| US8217560B2 (en) | 2010-09-04 | 2012-07-10 | Borgwarner Beru Systems Gmbh | Corona ignition device and method for its manufacture |
| DE102014112674A1 (de) | 2013-10-24 | 2015-05-13 | Borgwarner Ludwigsburg Gmbh | Korona-Zündeinrichtung |
| DE102014222925B4 (de) * | 2014-11-11 | 2023-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Dielektrisch behinderte Vorkammerzündung |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2431208A1 (fr) * | 1978-07-13 | 1980-02-08 | Tokai Trw & Co | Procede d'attraction des particules de carburant d'un melange air-carburant pauvre |
| JPS57186066A (en) * | 1981-05-13 | 1982-11-16 | Hirose Seisakusho:Kk | Discharge ignition method and discharge spark plug of internal combustion engine |
| DE4028869A1 (de) * | 1990-09-12 | 1992-03-19 | Fev Motorentech Gmbh & Co Kg | Plasmastrahl-zuendsystem |
| US5469013A (en) * | 1993-03-31 | 1995-11-21 | The United States Of America As Represented By The United States Department Of Energy | Large discharge-volume, silent discharge spark plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3527041A1 (de) * | 1985-07-27 | 1987-02-05 | Bernd Holz | Verfahren zur einbringung thermischer energie in einen mit einem medium gefuellten raum und einrichtung hierzu |
| US5423306A (en) * | 1993-10-22 | 1995-06-13 | Trigger, Deceased; Vernon A. | Internal plasma-combustion engine system |
-
1997
- 1997-10-29 DE DE19747700A patent/DE19747700C2/de not_active Expired - Fee Related
-
1998
- 1998-09-16 DE DE59804568T patent/DE59804568D1/de not_active Expired - Lifetime
- 1998-09-16 EP EP98117582A patent/EP0913897B1/fr not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2431208A1 (fr) * | 1978-07-13 | 1980-02-08 | Tokai Trw & Co | Procede d'attraction des particules de carburant d'un melange air-carburant pauvre |
| JPS57186066A (en) * | 1981-05-13 | 1982-11-16 | Hirose Seisakusho:Kk | Discharge ignition method and discharge spark plug of internal combustion engine |
| DE4028869A1 (de) * | 1990-09-12 | 1992-03-19 | Fev Motorentech Gmbh & Co Kg | Plasmastrahl-zuendsystem |
| US5469013A (en) * | 1993-03-31 | 1995-11-21 | The United States Of America As Represented By The United States Department Of Energy | Large discharge-volume, silent discharge spark plug |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 007, no. 031 (M - 192) 8 February 1983 (1983-02-08) * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1215392A3 (fr) * | 2000-12-12 | 2003-03-19 | Volkswagen AG | Elément et dispositif pour coupler de l'énergie à un espace rempli avec un milieu déterminé |
| US6953032B2 (en) | 2001-11-29 | 2005-10-11 | Simon Lucas Goede | Combustion engine and ignition circuit for a combustion engine |
| FR2858024A1 (fr) * | 2003-07-25 | 2005-01-28 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage d'un melange air/carburant |
| FR2859831A1 (fr) * | 2003-09-12 | 2005-03-18 | Renault Sa | Bougie de generation de plasma. |
| US7900613B2 (en) | 2006-02-07 | 2011-03-08 | Fachhochschule Aachen | High-frequency ignition system for motor vehicles |
| WO2007090380A1 (fr) * | 2006-02-07 | 2007-08-16 | Fachhochschule Aachen | Système d'allumage à haute fréquence pour véhicules automobiles |
| EP2427938A4 (fr) * | 2009-05-04 | 2013-07-24 | Federal Mogul Ignition Co | Isolant à pointe corona |
| WO2010129535A2 (fr) | 2009-05-04 | 2010-11-11 | Federal-Mogul Ingition Company | Isolant à pointe corona |
| EP2427938A2 (fr) * | 2009-05-04 | 2012-03-14 | Federal-Mogul Ignition Company | Isolant à pointe corona |
| US8464679B2 (en) * | 2009-05-04 | 2013-06-18 | Federal-Mogul Corporation | Corona tip insulator |
| US20100282197A1 (en) * | 2009-05-04 | 2010-11-11 | Federal-Mogul Corporation | Corona tip insulator |
| JP2015122319A (ja) * | 2009-05-04 | 2015-07-02 | フェデラル−モーグル・イグニション・カンパニーＦｅｄｅｒａｌ−Ｍｏｇｕｌ Ｉｇｎｉｔｉｏｎ Ｃｏｍｐａｎｙ | コロナ先端絶縁体 |
| US8729782B2 (en) | 2010-10-28 | 2014-05-20 | Federal-Mogul Ignition | Non-thermal plasma ignition arc suppression |
| KR20130139893A (ko) * | 2010-12-14 | 2013-12-23 | 페더럴-모굴 이그니션 컴퍼니 | 성형된 절연체를 가진 코로나 점화기 |
| US9041273B2 (en) | 2010-12-14 | 2015-05-26 | Federal-Mogul Ignition Company | Corona igniter having shaped insulator |
| CN103262370A (zh) * | 2010-12-14 | 2013-08-21 | 费德罗-莫格尔点火公司 | 具有特定形状的绝缘体的电晕点火器 |
| CN103262370B (zh) * | 2010-12-14 | 2016-03-23 | 费德罗-莫格尔点火公司 | 具有特定形状的绝缘体的电晕点火器 |
| KR101868424B1 (ko) * | 2010-12-14 | 2018-06-18 | 페더럴-모굴 이그니션 컴퍼니 | 성형된 절연체를 가진 코로나 점화기 |
| CN105981243A (zh) * | 2014-02-26 | 2016-09-28 | 通用汽车环球科技运作有限责任公司 | 等离子体点火装置 |
| US9951743B2 (en) | 2014-02-26 | 2018-04-24 | GM Global Technology Operations LLC | Plasma ignition device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59804568D1 (de) | 2002-08-01 |
| EP0913897B1 (fr) | 2002-06-26 |
| DE19747700A1 (de) | 1999-05-12 |
| DE19747700C2 (de) | 2000-06-29 |
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