EP0554853B1 - Electrodes à matériaux composites fibreux pour bougie - Google Patents
Electrodes à matériaux composites fibreux pour bougie Download PDFInfo
- Publication number
- EP0554853B1 EP0554853B1 EP93101659A EP93101659A EP0554853B1 EP 0554853 B1 EP0554853 B1 EP 0554853B1 EP 93101659 A EP93101659 A EP 93101659A EP 93101659 A EP93101659 A EP 93101659A EP 0554853 B1 EP0554853 B1 EP 0554853B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nickel
- platinum
- electrode
- composite material
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/39—Selection of materials for electrodes
Definitions
- the invention relates to a spark plug with an insulator, a center electrode arranged in the insulator, a body arranged on the outside of the insulator and a body electrode attached to the body.
- the center electrode and / or the body electrode are usually formed from silver or nickel alloys or from a nickel-copper two-material material.
- Spark plugs with platinum electrodes as the center electrode and / or body electrode are also known.
- the object on which the invention is based is to create a spark plug of the type mentioned at the outset which, despite a long service life, is associated with lower costs.
- At least the central electrode or the body electrode is thus formed from a platinum-nickel fiber composite material, which reduces the need for platinum or a platinum alloy and thus leads to considerable cost savings.
- the electrodes of the spark plug are formed by pieces or disks made of the platinum-nickel fiber composite material being inserted into the spark end of the electrodes
- the platinum is protected from carburization if it is stored or attached there, which may otherwise consist of a common electrode material such as nickel-copper two-substance.
- a peak response and field distortion between the nickel as a magnetic and the platinum as a non-magnetic material result in a lower response voltage. This means that the nickel is removed first and the platinum protrudes. Since platinum dissipates the heat even better than nickel, the nickel is additionally cooled, which leads to an overall longer service life.
- the nickel alloy can be a conventional spark plug nickel alloy, preferably with 1-4% silicon and 0.3% magnesium.
- Pipes made of nickel or a nickel alloy can also be provided, which are filled with the work function for the electrode-lowering substances such as metal oxides or semiconducting substances and are introduced into a platinum matrix and shaped until only thin nickel fibers are present.
- FIG. 4 shows a known spark plug with an insulator 5, a central electrode 1 made of a nickel jacket and a copper core with a platinum-nickel insert arranged in the insulator, a body 6 arranged on the outside of the insulator 5 and a body electrode 3 made of nickel attached to the body 6 or Inconell or a nickel jacket, copper core with platinum-nickel disc.
- the center electrode is attached in the insulator 5 via a glass melt 7, optionally with interference suppression or erosion resistance.
- the air spark gap 8 is located between the body electrode and the center electrode 3, 5.
- 5, 5a, 5b show body electrode arrangements which are currently common with platinum or gold-palladium materials made of solid material. According to the invention, these can advantageously consist of a platinum-nickel fiber composite material.
- the basic design of the first exemplary embodiment of the spark plug according to the invention shown in FIGS. 1 and 1 a corresponds to the design of the known spark plug shown in FIG. 4 with the exception of the design of the center electrode 1 and the body electrode 3.
- the center electrode 1 has an insert 2 made of a platinum-nickel fiber composite material, which consists of a platinum matrix in which nickel fibers or nickel alloy fibers are embedded.
- This insert 2 can be made of conventional material in an electrode Electrode base material such as nickel-copper two-component may be embedded.
- a similar insert 4 made of the platinum-nickel fiber composite material can be provided at the ignition-spark end of the body electrode 3.
- the inserts 2 and 4 can be attached as disks or plates to the electrode ends, for example welded on or embedded in them, for example tapped.
- the disks or plates can protrude in the direction of the spark path in front of the nickel body or center electrode 1, 3. If the fiber composite material is embedded in the electrode base material, there is the advantage that the platinum is embedded except at the ignition point and is protected against carburization with a rich mixture.
- one or more roof electrodes 3 with the corresponding inserts or shoulders 4 made of the platinum-nickel fiber composite material can be provided as body electrodes.
- the fiber composite insert 4 has a fiber course in the ignition direction. The fibers can also run across the ignition direction, provided that they are exposed on the surface.
- FIG 3 shows a further exemplary embodiment of the spark plug according to the invention, in which the central electrode 1 is provided with a fiber composite insert 2 and a disk 4 made of the fiber composite material is provided on the body electrode 3.
- an electrode formed using a platinum-nickel fiber composite material ie the central electrode or the body electrode in combination with a conventional counter electrode made of a nickel electrode material, ie a conventional nickel alloy with preferably 1-4% Si and 0.3% Mg to use a nickel-copper two-substance electrode as a central or body electrode, a silver-copper two-substance electrode or a silver-nickel fiber composite electrode.
- Interference suppression or erosion resistors 7 can also be used wire-wound base or glass melting may be provided.
- a spark area with a combination of air and sliding spark gaps leads to a reduction in the response voltage. If a shot chamber 10 is provided, there is an improved insulator cleaning.
- spark plug according to the invention it is possible to achieve a high electrode spacing and an acceptable response voltage despite a high compression. This results in further physical effects such as a peak effect and field distortion due to the combination of the non-magnetic and magnetic materials platinum and nickel.
- the fiber composite material made of nickel and platinum fulfills the demand for a lower electrode erosion rate, since it is an erosion-resistant and chemically resistant material, which enables a long service life of the corresponding spark plug.
- Both the platinum and nickel alloys are sufficiently resistant to erosion. Platinum only appears in a honeycomb shape on the erosion surface after several 100 hours of running time, namely over the entire fiber composite surfaces in the burning area of the sparks. Together with the field distortion at the separation points between the magnetic nickel and the non-magnetic platinum, this leads to increased peak effects, which applies to both the body electrodes and the center electrodes of the spark plugs applies.
- the response voltage can be further reduced by using additives that lower the work function, such as metal oxides and semiconductors that can withstand the combustion chamber conditions.
- additives that lower the work function such as metal oxides and semiconductors that can withstand the combustion chamber conditions.
- thin nickel tubes filled with such materials are used as inserts in the platinum matrix and worked over until the nickel is present as a thin fiber.
- the platinum-nickel fiber composite material can be in the form of a disk e.g. be tapped into a center electrode made of solid material, welded over the entire diameter, provided with the direction of the fibers in the axis and transverse to the axis, welded to the body electrode, i.e. welded on the face, or used as a rivet in a body electrode bore.
- platinum rods into a nickel matrix and to shape them until there are enough fine fibers of platinum. In the event of burn-up, platinum peaks occur over a longer period of time over the more abrasive nickel matrix.
Landscapes
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Claims (5)
- Bougie d'allumage, avec un isolateur (5), une électrode centrale (1), disposée dans l'isolateur (5), un corps (6), se trouvant à l'extérieur de l'isolateur et une électrode de corps (3), montée sur le corps, caractérisée en ce que l'électrode centrale et/ou l'électrode de corps est, respectivement sont, constituée(s) en utilisant un matériau composite à base de fibres-nickel-platine, composé d'une matrice métallique en platine, dans laquelle sont noyées de fibres de nickel, ou d'une matrice de nickel, dans laquelle sont noyées des fibres de platine.
- Bougie d'allumage selon la revendication 1, caractérisée en ce que des appendices (2, 4) constitués dans le matériau composite à base de fibres-nickel-platine sont montées à l'extrémité côté étincelle d'allumage de l'électrode centrale (1) et/ou de l'électrode de corps (3), dans la zone de l'étincelle.
- Bougie d'allumage selon la revendication 2, caractérisée en ce que les appendices (2, 4) constitués dans le matériau composite à base de fibres-nickel-platine sont noyées dans l'extrémité côté étincelle d'allumage de l'électrode centrale (1) et/ou de l'électrode de corps (3), dans la zone de l'étincelle.
- Bougie d'allumage selon la revendication 1, caractérisée en ce qu'un disque ou une plaque (2, 4) de matériau composite à base de fibres-nickel-platine est soudé à l'extrémité côté étincelle d'allumage de l'électrode de corps (3) et/ou de l'électrode centrale (1).
- Bougie d'allumage selon l'une des revendications précédentes, caractérisée en ce que la direction des fibres du matériau composite à base de fibres est la direction de l'étincelle d'allumage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4203251A DE4203251A1 (de) | 1992-02-05 | 1992-02-05 | Zuendkerze |
DE4203251 | 1992-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0554853A1 EP0554853A1 (fr) | 1993-08-11 |
EP0554853B1 true EP0554853B1 (fr) | 1995-06-07 |
Family
ID=6450991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93101659A Expired - Lifetime EP0554853B1 (fr) | 1992-02-05 | 1993-02-03 | Electrodes à matériaux composites fibreux pour bougie |
Country Status (5)
Country | Link |
---|---|
US (1) | US5510667A (fr) |
EP (1) | EP0554853B1 (fr) |
JP (1) | JP3436556B2 (fr) |
DE (2) | DE4203251A1 (fr) |
ES (1) | ES2073310T3 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6533629B1 (en) * | 1999-07-13 | 2003-03-18 | Alliedsignal Inc. | Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same |
DE60135979D1 (de) | 2000-02-16 | 2008-11-13 | Ngk Spark Plug Co | Zündkerze |
JP2002033176A (ja) * | 2000-05-12 | 2002-01-31 | Denso Corp | スパークプラグおよびその製造方法 |
JP4433634B2 (ja) * | 2000-06-29 | 2010-03-17 | 株式会社デンソー | コージェネレーション用スパークプラグ |
US6614145B2 (en) | 2001-08-21 | 2003-09-02 | Federal-Mogul World Wide, Inc. | Two-piece swaged center electrode assembly |
DE10331267A1 (de) * | 2003-07-10 | 2005-02-03 | Robert Bosch Gmbh | Brennstoffeinspritzsystem |
US7011560B2 (en) * | 2003-11-05 | 2006-03-14 | Federal-Mogul World Wide, Inc. | Spark plug with ground electrode having mechanically locked precious metal feature |
US7049733B2 (en) * | 2003-11-05 | 2006-05-23 | Federal-Mogul Worldwide, Inc. | Spark plug center electrode assembly |
WO2007149862A2 (fr) | 2006-06-19 | 2007-12-27 | Federal-Mogul Corporation | Bougie d'allumage avec électrode de masse à fil mince |
US8334642B2 (en) | 2010-05-11 | 2012-12-18 | Caterpillar Inc. | Spark plug |
DE102012107771B4 (de) * | 2012-08-23 | 2019-05-09 | Federal-Mogul Ignition Gmbh | Zündkerze mit rondenförmigem Edelmetallbauteil |
DE102015121862B4 (de) | 2015-12-15 | 2017-12-28 | Federal-Mogul Ignition Gmbh | Zündkerze |
US20230299566A1 (en) * | 2020-08-07 | 2023-09-21 | EcoPower Spark, LLC | Spark plug with integrated center electrode |
US11621544B1 (en) | 2022-01-14 | 2023-04-04 | Federal-Mogul Ignition Gmbh | Spark plug electrode and method of manufacturing the same |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2508490C3 (de) * | 1975-02-27 | 1984-07-26 | G. Rau GmbH & Co, 7530 Pforzheim | Metallischer Verbundwerkstoff und Verfahren zu dessen Herstellung |
DE2549931A1 (de) * | 1975-11-07 | 1977-05-18 | Bosch Gmbh Robert | Zuendkerzen-elektrode |
JPS5936390B2 (ja) * | 1981-03-31 | 1984-09-03 | 株式会社デンソー | 内燃機関用スパ−クプラグ |
JPS5947436B2 (ja) * | 1982-01-14 | 1984-11-19 | 株式会社デンソー | 内燃機関用スパ−クプラグ |
US4540910A (en) * | 1982-11-22 | 1985-09-10 | Nippondenso Co., Ltd. | Spark plug for internal-combustion engine |
JPS59160988A (ja) * | 1983-03-02 | 1984-09-11 | 日本特殊陶業株式会社 | スパ−クプラグ |
US4904216A (en) * | 1983-09-13 | 1990-02-27 | Ngk Spark Plug Co., Ltd. | Process for producing the center electrode of spark plug |
JPS60125339A (ja) * | 1983-12-07 | 1985-07-04 | Hitachi Ltd | 銅−炭素繊維複合材料の製造法 |
DE3563498D1 (en) * | 1984-08-07 | 1988-07-28 | Ngk Spark Plug Co | Spark plug |
DE3605300A1 (de) * | 1986-02-19 | 1987-08-20 | Beru Werk Ruprecht Gmbh Co A | Zuendkerze |
JPS62226592A (ja) * | 1986-03-28 | 1987-10-05 | 日本特殊陶業株式会社 | 点火プラグ |
US5210457A (en) * | 1990-09-07 | 1993-05-11 | Ngk Spark Plug Co., Ltd. | Outer electrode for spark plug and a method of manufacturing thereof |
-
1992
- 1992-02-05 DE DE4203251A patent/DE4203251A1/de not_active Withdrawn
-
1993
- 1993-02-03 ES ES93101659T patent/ES2073310T3/es not_active Expired - Lifetime
- 1993-02-03 DE DE59300237T patent/DE59300237D1/de not_active Expired - Fee Related
- 1993-02-03 EP EP93101659A patent/EP0554853B1/fr not_active Expired - Lifetime
- 1993-02-05 US US08/015,024 patent/US5510667A/en not_active Expired - Fee Related
- 1993-02-05 JP JP04069493A patent/JP3436556B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0554853A1 (fr) | 1993-08-11 |
JPH0613157A (ja) | 1994-01-21 |
DE4203251A1 (de) | 1993-08-12 |
JP3436556B2 (ja) | 2003-08-11 |
US5510667A (en) | 1996-04-23 |
DE59300237D1 (de) | 1995-07-13 |
ES2073310T3 (es) | 1995-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0554853B1 (fr) | Electrodes à matériaux composites fibreux pour bougie | |
DE19650728B4 (de) | Zündkerze | |
DE19701752C2 (de) | Plasmazündvorrichtung und Zündkerze mit einer Magnetfeldeinrichtung zur Erzeugung eines Lichtbogens veränderlicher Länge | |
DE2857574C2 (de) | Zündkerze | |
EP0238520B1 (fr) | Bougie d'allumage a etincelle glissante | |
DE10252736B4 (de) | Zündkerze | |
DE69400185T2 (de) | Zündkerzenelektrode zur Anwendung in einem Verbrennungsmotor | |
EP0049372B1 (fr) | Bougie pour moteurs à combustion interne | |
DE19623989C2 (de) | Zündkerze für eine Brennkraftmaschine | |
DE2446929A1 (de) | Zuendkerze | |
EP0952647A1 (fr) | Bougie d'allumage pour moteur à combustion resp. détecteur pour procédé d'inflammation et de combustion | |
DE4431143B4 (de) | Zündkerze für eine Brennkraftmaschine | |
EP0913897A1 (fr) | Bougie d'allumage pourdispositif d'allumage à jet de plasma | |
DE3446128A1 (de) | Zuendkerze fuer brennkraftmaschinen | |
DE102015113175A1 (de) | Zündkerze | |
EP0554792B1 (fr) | Matériau composite argent-nickel pour des contacts électriques et électrodes | |
DE4429272B4 (de) | Zündkerze für einen Verbrennungsmotor | |
WO1998026481A1 (fr) | Bougie | |
DE3132814A1 (de) | "zuendkerze fuer brennkraftmaschinen" | |
DE10015642A1 (de) | Zündkerze für eine Brennkraftmaschine | |
EP1881573B1 (fr) | Dispositif d'allumage, en particulier bougie d'allumage pour moteur à combustion et procédé de positionnement d'au moins une électrode de masse dans le dispositif d'allumage | |
DE4128392C2 (de) | Zündkerze | |
DE3612135A1 (de) | Elektrode zum zuenden brennbarer gemische von gasen und daempfen | |
DE19854861A1 (de) | Zündkerze | |
DE102004046862B4 (de) | Zündkerze |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT NL SE |
|
17P | Request for examination filed |
Effective date: 19931014 |
|
K1C1 | Correction of patent application (title page) published |
Effective date: 19930811 |
|
17Q | First examination report despatched |
Effective date: 19940729 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT NL SE |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO TORTA SOCIETA' SEMPLICE |
|
REF | Corresponds to: |
Ref document number: 59300237 Country of ref document: DE Date of ref document: 19950713 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2073310 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950731 |
|
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 | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020116 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20020213 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20020214 Year of fee payment: 10 Ref country code: FR Payment date: 20020214 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20020227 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020307 Year of fee payment: 10 |
|
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: 20030203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030204 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030204 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20030901 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030902 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
EUG | Se: european patent has lapsed | ||
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: 20031031 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20030901 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20030204 |
|
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 NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050203 |