EP1850433A1 - Ignition plug - Google Patents
Ignition plug Download PDFInfo
- Publication number
- EP1850433A1 EP1850433A1 EP07004484A EP07004484A EP1850433A1 EP 1850433 A1 EP1850433 A1 EP 1850433A1 EP 07004484 A EP07004484 A EP 07004484A EP 07004484 A EP07004484 A EP 07004484A EP 1850433 A1 EP1850433 A1 EP 1850433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- spark plug
- wire
- cross
- metal wire
- 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.)
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Classifications
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- 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
- H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
-
- 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
Definitions
- the invention relates to a spark plug having a body, an insulator arranged in the body, a center electrode arranged in the insulator and a body electrode attached to the body and formed from a metal wire.
- Spark plugs of this type are known and available on the market.
- metal wires are used to form the body electrodes, which typically consist of a solid flat wire, which is drawn from a round wire.
- Such a flat wire and thus the body electrode formed therefrom provided with natural edges, ie rounding at their four outer edges.
- the body end face is still so small that, with a usually substantially rectangular cross section of the metal wire for the body electrode, this protrudes with its corners either over the end face or must have a correspondingly smaller cross section. That is, metal wires in a substantially rectangular shape for the formation of the body electrode can only be used with dimensions that fit the annular sealing surface on the body face.
- the object underlying the invention is therefore to provide a spark plug of the type mentioned, which has a higher combustion volume.
- a body electrode which is formed from a metal wire whose cross-sectional shape or profile makes it possible to contrast the largest possible burning volume of the center electrode, ie the center electrode to oppose a large wide area without rounding, taking into account that a metal wire with this profile can be applied to a predetermined annular welding surface of the front side of the body.
- the spark plug according to the invention has the further advantage that due to the profile, i. the cross-sectional shape of the metal wire for the body electrode remains as cold as possible during engine operation.
- This design results in particular a longer service life of the spark plug.
- FIG. 1 the electrode-side part of an embodiment of the spark plug according to the invention with a body 1, a body arranged in the insulator 2, a arranged in the insulator center electrode 3 and a body 1 on the end face 5 arranged body electrode 4 is shown in the In Fig. 1 illustrated embodiment is designed as a roof electrode.
- the end face 5 of the body 1 has an outer diameter D1 and an inner diameter D2, the inner diameter D2 defining a respiratory space 6.
- the insulator 2 may be a ceramic insulator and the body electrode 4 is welded to the annular end surface 5 of the body 1.
- the outer diameter D1 of this annular surface is limited by the core diameter of the bolt thread of the spark plug thread.
- the inner diameter D2 is influenced by the requirements for the respiratory space 6. In this case, a large diameter of the respiratory space 6 is desirable. The reason for this is, on the one hand, that in a large gap between the insulator foot and the respiratory space 6, a good charge exchange takes place and thus the foot of the insulator 2 is cooled and, second, that a large gap is required between the insulator 2 and the respiratory space 6 so that contamination of the spark plug by the construction of carbonaceous coatings clogging of the gap is avoided and no lateral spark.
- the body electrode 4 is formed of a metal wire, for which a flat wire is usually used, with its wide side facing the center electrode 3 and forming a discharge gap therebetween.
- the cross-sectional shape of this flat wire of a rectangular profile with natural edges, i. Rounding at the four edges is shown in Fig. 2 on the left side.
- Such a flat wire is drawn from a round wire, resulting in the illustrated rectangular profile with a defined width L and height H.
- the geometry of the edges of the profile results from the drawing process and consists of strong rounding at the edges.
- a corresponding adjustment of a rectangular profile would then mean that the ratio between the width to the height would have to be changed, wherein a reduction in the height H with the same width L of the flat wire deterioration of the ratio of the heat receiving wire surface to the heat dissipating wire cross-sectional area to the detriment of thermal behavior would result. This would result in a higher body electrode temperature during engine operation with potentially higher wear.
- the wire profile i. the cross-sectional shape of the metal wire 7 is shown, from which the body electrode 4 is formed in one embodiment of the spark plug according to the invention.
- the cross-sectional shape of the metal wire 7 consists of a straight line on the side facing the center electrode and a waveform with the straight following the rounding on the side facing away from the center electrode.
- This cross-sectional shape is preferably approximately semicircular, circular sector-shaped, semi-elliptical or Ellipsensektorförmig.
- the body electrode is formed of a metal wire having a profile and cross-section which faces the ignition side with an optimum width of the center electrode and can be easily welded onto the annular end face 5 of the spark plug body 1.
- the geometry of this wire profile is such that the ratio of the heat-receiving wire surface to the heat-emitting cross-sectional area is small.
- the cross-section of the metal wire 7 from which the body electrode 4 is formed should have a basic shape in which the firing side, i. on the side facing the center electrode, the largest Abbrand Chemistry is provided and on the side facing away from the center electrode is to find a geometry with rounded portions.
- a minimum radius of 0.5 to 0.7 mm should preferably be used for the rounding.
- a particularly preferred embodiment of the spark plug according to the invention thus has a body electrode formed of a metal wire whose cross-section has a width L of 2.0 to 3.0 mm, a height or depth H of 1.0 to 2.0 mm and rounded Has edges with radii 0.4 to 1.0 mm.
- the body electrode 4 was formed in the form of a roof electrode facing the center electrode with a large central area.
- the body electrode as a side electrode, since in this embodiment, the advantages achieved according to the invention are given.
- the burn-up potential around the noble metal chip of the reinforcement can be used, thereby achieving an advantage in terms of service life.
- the ground and / or the center electrode of the spark plug according to the invention can / can thus be provided with noble metal reinforcements in the region of the ignition gap.
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- Spark Plugs (AREA)
Abstract
Description
Die Erfindung betrifft eine Zündkerze mit einem Körper, einem im Körper angeordneten Isolator, einer im Isolator angeordneten Mittelelektrode und einer am Körper angebrachten und aus einem Metalldraht gebildeten Körperelektrode.The invention relates to a spark plug having a body, an insulator arranged in the body, a center electrode arranged in the insulator and a body electrode attached to the body and formed from a metal wire.
Zündkerzen dieser Art sind bekannt und auf dem Markt erhältlich. Bei den bekannten Zündkerzen werden zur Bildung der Körperelektroden Metalldrähte verwandt, die im typischen Fall aus einem massiven Flachdraht bestehen, der aus einem Runddraht gezogen wird. Ein derartiger Flachdraht und damit die daraus gebildete Körperelektrode sind mit Naturkanten, d.h. Abrundungen an ihren vier Außenkanten versehen.Spark plugs of this type are known and available on the market. In the known spark plugs metal wires are used to form the body electrodes, which typically consist of a solid flat wire, which is drawn from a round wire. Such a flat wire and thus the body electrode formed therefrom provided with natural edges, ie rounding at their four outer edges.
Bei Körperelektroden dieser Ausbildung ist es als nachteilig anzusehen, dass aufgrund der Abrundungen an den Außenkanten das Abbrandvolumen nicht optimal ist, da die Abrundungen an der Abbrandfläche das Abbrandvolumen verringern.In the case of body electrodes of this design, it is to be regarded as disadvantageous that due to the rounding off at the outer edges, the burning volume is not optimal, since the roundings on the burning surface reduce the burnup volume.
Insbesondere bei Zündkerzen mit kleinem Gewindedurchmesser ist die Körperstirnfläche weiterhin so klein, dass bei einem üblicherweise im Wesentlichen rechteckigen Querschnitt des Metalldrahtes für die Körperelektrode diese mit ihren Ecken entweder über die Stirnfläche übersteht oder einen entsprechend geringeren Querschnitt haben muss. D.h., dass Metalldrähte in im Wesentlichen Rechteckform für die Bildung der Körperelektrode nur mit Abmessungen verwandt werden können, die auf die kreisringsförmige Schweißfläche auf der Körperstirnfläche passen.In particular, in the case of spark plugs with a small thread diameter, the body end face is still so small that, with a usually substantially rectangular cross section of the metal wire for the body electrode, this protrudes with its corners either over the end face or must have a correspondingly smaller cross section. That is, metal wires in a substantially rectangular shape for the formation of the body electrode can only be used with dimensions that fit the annular sealing surface on the body face.
Bei einer optimalen Anpassung der Abbrandfläche ist aber auch die thermische Eignung eines Flachdrahtes zur Bildung der Körperelektrode zu beachten. Um das Ziel von niedrigen Körperelektrodentemperaturen zu erreichen, ist insbesondere auf ein passendes Verhältnis der Wärme aufnehmenden Oberfläche zur Wärme abgebenden Querschnittsfläche des Drahtprofils zu achten.With an optimal adaptation of the Abbrandfläche but also the thermal suitability of a flat wire to form the body electrode is observed. In order to achieve the goal of low body electrode temperatures, particular attention must be paid to a suitable ratio of the heat-absorbing surface to the heat-emitting cross-sectional area of the wire profile.
Die der Erfindung zugrunde liegende Aufgabe besteht daher darin, eine Zündkerze der eingangs genannten Art zu schaffen, die ein höheren Abbrandvolumen hat.The object underlying the invention is therefore to provide a spark plug of the type mentioned, which has a higher combustion volume.
Diese Aufgabe wird gemäß der Erfindung durch die Ausbildung gelöst, die im Patentanspruch 1 angegeben ist.This object is achieved according to the invention by the formation which is specified in
Bei der erfindungsgemäßen Zündkerze ist somit eine Körperelektrode vorgesehen, die aus einem Metalldraht gebildet ist, dessen Querschnittsform oder Profil es ermöglicht, ein möglichst großes Abbrandvolumen der Mittelelektrode gegenüberzustellen, d.h. der Mittelelektrode eine große breite Fläche ohne Abrundungen entgegenzustellen, wobei berücksichtigt werden kann, dass ein Metalldraht mit diesem Profil auf eine vorgegebene kreisringförmige Schweißfläche der Stirnseite des Körpers aufgebracht werden kann.In the case of the spark plug according to the invention, therefore, a body electrode is provided, which is formed from a metal wire whose cross-sectional shape or profile makes it possible to contrast the largest possible burning volume of the center electrode, ie the center electrode to oppose a large wide area without rounding, taking into account that a metal wire with this profile can be applied to a predetermined annular welding surface of the front side of the body.
Die erfindungsgemäße Zündkerze hat den weiteren Vorteil, dass aufgrund des Profils, d.h. der Querschnittsform des Metalldrahtes für die Körperelektrode diese im Motorbetrieb möglichst kalt bleibt.The spark plug according to the invention has the further advantage that due to the profile, i. the cross-sectional shape of the metal wire for the body electrode remains as cold as possible during engine operation.
Durch diese Ausbildung ergibt sich insbesondere eine höhere Lebensdauer der Zündkerze.This design results in particular a longer service life of the spark plug.
Besonders bevorzugte Weiterbildungen und Ausgestaltungen der erfindungsgemäßen Zündkerze sind Gegenstand der Patentansprüche 2 bis 8.Particularly preferred developments and refinements of the spark plug according to the invention are the subject matter of
Im folgenden werden anhand der zugehörigen Zeichnungen besonders bevorzugte Ausführungsbeispiele der Erfindung näher beschrieben.In the following, particularly preferred embodiments of the invention will be described with reference to the accompanying drawings.
Es zeigen
- Fig. 1 eine perspektivische Ansicht auf den elektrodenseitigen Teil eines Ausführungsbeispiels der erfindungsgemäßen Zündkerze und
- Fig. 2 eine schematische Draufsicht auf die Körperstirnseite mit der Darstellung der Querschnittsform des Metalldrahtes für die Körperelektrode nach dem Stand der Technik und gemäß der Erfindung.
- Fig. 1 is a perspective view of the electrode-side part of an embodiment of the spark plug according to the invention and
- Fig. 2 is a schematic plan view of the body front side showing the cross-sectional shape of the metal wire for the body electrode according to the prior art and according to the invention.
In Fig. 1 ist der elektrodenseitige Teil eines Ausführungsbeispiels der erfindungsgemäßen Zündkerze mit einem Körper 1, einem im Körper angeordneten Isolator 2, einer im Isolator angeordneten Mittelelektrode 3 und einer am Körper 1 und zwar auf dessen Stirnseite 5 angeordneten Körperelektrode 4 dargestellt, die bei dem in Fig. 1 dargestellten Ausführungsbeispiel als Dachelektrode ausgebildet ist.In Fig. 1, the electrode-side part of an embodiment of the spark plug according to the invention with a
Die Stirnfläche 5 des Körpers 1 hat einen Außendurchmesser D1 und einen Innendurchmesser D2, wobei der Innendurchmesser D2 einen Atmungsraum 6 begrenzt.The
Der Isolator 2 kann ein keramischer Isolator sein und die Körperelektrode 4 ist auf die ringförmige Stirnfläche 5 des Körpers 1 geschweißt.The
Der Außendurchmesser D1 dieser Ringfläche wird durch den Kerndurchmesser des Bolzengewindes des Zündkerzengewindes begrenzt. Der Innendurchmesser D2 wird durch die Anforderungen an den Atmungsraum 6 beeinflusst. Dabei ist ein großer Durchmesser des Atmungsraumes 6 anzustreben. Der Grund dafür besteht zum einen darin, dass in einem großen Spalt zwischen dem Isolatorfuß und dem Atmungsraum 6 ein guter Ladungswechsel stattfindet und somit der Fuß des Isolators 2 gekühlt wird und dass zum anderen ein großer Spalt zwischen dem Isolator 2 und dem Atmungsraum 6 anzustreben ist, damit bei Verschmutzungen der Zündkerze durch den Aufbau von kohlehaltigen Belägen ein Zusetzen des Spaltes vermieden wird und kein seitlicher Funken entsteht.The outer diameter D1 of this annular surface is limited by the core diameter of the bolt thread of the spark plug thread. The inner diameter D2 is influenced by the requirements for the
Wie es in Fig. 2 dargestellt ist, ist die Körperelektrode 4 aus einem Metalldraht gebildet, für den üblicherweise ein Flachdraht verwendet wird, der mit seiner breiten Seite der Mittelelektrode 3 gegenüberliegt und dazwischen einen Entladungsspalt bildet. Die Querschnittsform dieses Flachdrahtes aus einem Rechteckprofil mit Naturkanten, d.h. Abrundungen an den vier Kanten ist in Fig. 2 auf der linken Seite dargestellt.As shown in Fig. 2, the
Ein derartiger Flachdraht wird aus einem Runddraht gezogen, woraus sich das dargestellte rechteckige Profil mit definierter Breite L und Höhe H ergibt. Die Geometrie der Kanten des Profils ergibt sich durch den Ziehprozess und besteht aus starken Abrundungen an den Kanten.Such a flat wire is drawn from a round wire, resulting in the illustrated rectangular profile with a defined width L and height H. The geometry of the edges of the profile results from the drawing process and consists of strong rounding at the edges.
Die dadurch entstandenen Naturkanten K auf der breiten Seite des Profils haben den Nachteil, dass die abgerundeten Kanten des Flachdrahtes nicht mehr als Abbrandpotential zur Verfügung stehen und sich dadurch eine verkleinerte Abbrandfläche mit der Breite B ergibt.The resulting natural edges K on the broad side of the profile have the disadvantage that the rounded edges of the Flat wire is no longer available as burn-up potential and thereby results in a reduced Abbrandfläche with the width B.
Bei der Verwendung von Flachdrähten ohne derartige Naturkanten, d.h. mit einem rechteckigen Profil ergibt sich jedoch der Nachteil, dass diese Drähte bei optimaler Breite nicht mehr auf die Kreisringfläche der Stirnfläche 5 des Körpers geschweißt werden können, da sie über diese Kreisringfläche überstehen.When using flat wires without such natural edges, i. with a rectangular profile, however, there is the disadvantage that these wires can no longer be welded to the annular surface of the
Eine entsprechende Anpassung eines rechteckigen Profils würde dann bedeuten, dass das Verhältnis zwischen der Breite zur Höhe verändert werden müsste, wobei eine Verringerung der Höhe H bei gleich bleibender Breite L des Flachdrahtes eine Verschlechterung des Verhältnisses der Wärme aufnehmenden Drahtoberfläche zur Wärme abführenden Drahtquerschnittsfläche zu Ungunsten des thermischen Verhaltens zur Folge hätte. Daraus ergäbe sich eine höhere Körperelektrodentemperatur im Motorbetrieb mit potentiell höherem Verschleiß.A corresponding adjustment of a rectangular profile would then mean that the ratio between the width to the height would have to be changed, wherein a reduction in the height H with the same width L of the flat wire deterioration of the ratio of the heat receiving wire surface to the heat dissipating wire cross-sectional area to the detriment of thermal behavior would result. This would result in a higher body electrode temperature during engine operation with potentially higher wear.
In Fig. 2 ist auf der rechten Seite das Drahtprofil, d.h. die Querschnittsform des Metalldrahtes 7 dargestellt, aus dem die Körperelektrode 4 bei einem Ausführungsbeispiel der erfindungsgemäßen Zündkerze gebildet ist.In Fig. 2, on the right side, the wire profile, i. the cross-sectional shape of the
Wie es in Fig. 2 auf der rechten Seite dargestellt ist, besteht die Querschnittsform des Metalldrahtes 7 aus einer Geraden auf der der Mittelelektrode zugewandten Seite und einer Kurvenform mit sich an die Gerade anschließenden Abrundungen auf der der Mittelelektrode abgewandten Seite. Diese Querschnittsform ist vorzugsweise etwa halbkreisförmig, kreissektorförmig, halbelliptisch oder ellipsensektorförmig.As shown in Fig. 2 on the right side, the cross-sectional shape of the
Bei der Verwendung eines Metalldrahtes mit Naturkante, wie es nach dem Stand der Technik der Fall ist, steht wie bereits erwähnt durch die Abrundungen K an den Kanten weniger Abbrandvolumen zur Verfügung. Die potentielle Abbrandfläche wird daher im Wesentlichen durch die verringerte Breite B bestimmt, die bei einer Gesamtdrahtbreite von 2,5 mm bei etwa 1,9 mm liegt. Aus Fig. 2 ist gleichfalls erkennbar, dass beim Stand der Technik die Gestaltung des Drahtes in reiner Rechteckform mit gleicher Abmessung von z.B. 2,5 x 1,3 mm nicht möglich ist, da das Profil eines solchen Drahtes nicht auf die kreisringförmige Stirnfläche 5 des Körpers passen würde.When using a metal wire with natural edge, as is the case in the prior art, as already mentioned by the rounding K at the edges less burning volume available. The potential erosion surface is therefore determined essentially by the reduced width B, which in the case of a total wire width of 2.5 mm at about 1.9 mm. From Fig. 2 it is also recognizable that in the prior art, the design of the wire in a pure rectangular shape with the same size of eg 2.5 x 1.3 mm is not possible because the profile of such a wire not on the
Eine Modifikation eines derartigen rechteckigen Drahtes durch Verkleinerung der Drahttiefe oder Höhe wäre in thermischer Hinsicht nachteilig, da sich das Verhältnis der Drahtoberfläche zum Drahtquerschnitt verändern würde und somit höhere Temperaturen an der Körperelektrode im Motorbetrieb entstehen würden.A modification of such a rectangular wire by reducing the wire depth or height would be thermally disadvantageous, since the ratio of the wire surface would change to the wire cross section and thus higher temperatures would occur at the body electrode during engine operation.
Demgegenüber ist gemäß der Erfindung die Körperelektrode aus einem Metalldraht mit einem Profil und Querschnitt gebildet, der zündseitig mit einer optimalen Breite der Mittelelektrode gegenübersteht und der auf die kreisringförmige Stirnseite 5 des Zündkerzenkörpers 1 problemlos aufgeschweißt werden kann.In contrast, according to the invention, the body electrode is formed of a metal wire having a profile and cross-section which faces the ignition side with an optimum width of the center electrode and can be easily welded onto the
Die Geometrie dieses Drahtprofils ist derart, dass dabei das Verhältnis der Wärme aufnehmenden Drahtoberfläche zur Wärme abgebenden Querschnittsfläche klein ist.The geometry of this wire profile is such that the ratio of the heat-receiving wire surface to the heat-emitting cross-sectional area is small.
Es sind Untersuchungen mit verschiedenen Drahtprofilen angestellt worden, die zu dem folgenden Ergebnis geführt haben:
Aus der obigen Tabelle ergibt sich, dass der Querschnitt des Metalldrahtes 7, aus dem die Körperelektrode 4 gebildet ist, eine Grundform haben sollte, bei der zündseitig, d.h. auf der der Mittelelektrode zugewandten Seite die größte Abbrandfläche vorgesehen ist und auf der der Mittelelektrode abgewandten Seite eine Geometrie mit Abrundungen zu finden ist. Bei einem Drahtquerschnitt von 2,5 x 1,3 mm ist vorzugsweise ein Mindestradius von 0,5 bis 0,7 mm für die Abrundungen zu verwenden.It can be seen from the above table that the cross-section of the
Ein besonders bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Zündkerze hat somit eine Körperelektrode, die aus einem Metalldraht gebildet ist, dessen Querschnitt eine Breite L von 2,0 bis 3,0 mm, eine Höhe oder Tiefe H von 1,0 bis 2,0 mm und abgerundete Kanten mit Radien 0,4 bis 1,0 mm hat. Bei einer Zündkerze mit einem M12 Gewinde hat die Drahtgeometrie vorzugsweise folgende Abmessungen: L = 2,4 bis 2,6mm, H = 1,2 bis 1,4 mm und R = 0,5 bis 0,7 mm.A particularly preferred embodiment of the spark plug according to the invention thus has a body electrode formed of a metal wire whose cross-section has a width L of 2.0 to 3.0 mm, a height or depth H of 1.0 to 2.0 mm and rounded Has edges with radii 0.4 to 1.0 mm. For a spark plug with an M12 thread, the wire geometry preferably has the following dimensions: L = 2.4 to 2.6 mm, H = 1.2 to 1.4 mm and R = 0.5 to 0.7 mm.
Bei dem oben beschriebenen Ausführungsbeispiel war die Körperelektrode 4 in Form einer Dachelektrode ausgebildet, die mit großer Mittelfläche der Mittelelektrode gegenüber steht.In the embodiment described above, the
Es ist aber auch möglich, die Körperelektrode als Seitenelektrode auszugestalten, da auch bei dieser Ausbildung die erfindungsgemäß erzielten Vorteile gegeben sind.But it is also possible to design the body electrode as a side electrode, since in this embodiment, the advantages achieved according to the invention are given.
Auch bei einer Edelmetallarmierung der Elektrode oder Elektroden kann das Abbrandpotential rund um das Edelmetallplättchen der Armierung genutzt werden und dadurch ein Vorteil bezüglich der Lebensdauer erreicht werden. Die Masse- und/oder die Mittelelektrode der erfindungsgemäßen Zündkerze kann/können somit mit Edelmetallarmierungen im Bereich des Zündspaltes versehen sein.Even with a noble metal reinforcement of the electrode or electrodes, the burn-up potential around the noble metal chip of the reinforcement can be used, thereby achieving an advantage in terms of service life. The ground and / or the center electrode of the spark plug according to the invention can / can thus be provided with noble metal reinforcements in the region of the ignition gap.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006019949A DE102006019949A1 (en) | 2006-04-28 | 2006-04-28 | spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1850433A1 true EP1850433A1 (en) | 2007-10-31 |
| EP1850433B1 EP1850433B1 (en) | 2011-08-31 |
Family
ID=38283288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07004484A Revoked EP1850433B1 (en) | 2006-04-28 | 2007-03-05 | Ignition plug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1850433B1 (en) |
| AT (1) | ATE522962T1 (en) |
| DE (1) | DE102006019949A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10826279B1 (en) | 2019-08-28 | 2020-11-03 | Federal-Mogul Ignition Llc | Spark plug ground electrode configuration |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0725463A1 (en) * | 1995-02-01 | 1996-08-07 | Ngk Spark Plug Co., Ltd | A spark plug for an internal combustion engine |
| US5828161A (en) * | 1996-10-09 | 1998-10-27 | Tlr Innovations, Inc. | External negative electrode having a cambered shape |
| EP1775808A1 (en) * | 2005-10-11 | 2007-04-18 | Ngk Spark Plug Co., Ltd | Spark plug and method for producing spark plug |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210103B (en) * | 1987-09-17 | 1992-02-05 | Champion Spark Plug Europ | Spark plug for internal combustion engine |
-
2006
- 2006-04-28 DE DE102006019949A patent/DE102006019949A1/en not_active Withdrawn
-
2007
- 2007-03-05 AT AT07004484T patent/ATE522962T1/en active
- 2007-03-05 EP EP07004484A patent/EP1850433B1/en not_active Revoked
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0725463A1 (en) * | 1995-02-01 | 1996-08-07 | Ngk Spark Plug Co., Ltd | A spark plug for an internal combustion engine |
| US5828161A (en) * | 1996-10-09 | 1998-10-27 | Tlr Innovations, Inc. | External negative electrode having a cambered shape |
| EP1775808A1 (en) * | 2005-10-11 | 2007-04-18 | Ngk Spark Plug Co., Ltd | Spark plug and method for producing spark plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10826279B1 (en) | 2019-08-28 | 2020-11-03 | Federal-Mogul Ignition Llc | Spark plug ground electrode configuration |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006019949A1 (en) | 2007-11-08 |
| ATE522962T1 (en) | 2011-09-15 |
| EP1850433B1 (en) | 2011-08-31 |
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