EP0537231B1 - Sparking plug - Google Patents
Sparking plug Download PDFInfo
- Publication number
- EP0537231B1 EP0537231B1 EP91912246A EP91912246A EP0537231B1 EP 0537231 B1 EP0537231 B1 EP 0537231B1 EP 91912246 A EP91912246 A EP 91912246A EP 91912246 A EP91912246 A EP 91912246A EP 0537231 B1 EP0537231 B1 EP 0537231B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platinum
- electrode
- attachment portion
- carrier
- prism
- 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
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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
-
- 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
- H01T13/46—Sparking plugs having two or more spark gaps
- H01T13/467—Sparking plugs having two or more spark gaps in parallel connection
Definitions
- the invention relates to a spark plug with a central electrode insulated from the candle thread and with ground electrodes electrically connected to the candle thread, an attachment part consisting at least partially of platinum or a platinum alloy being attached to the combustion chamber end of the central electrode, between which and from the side the spark gaps that are brought up to him are the spark gaps, the attachment part essentially having the shape of a prism with the cover surface facing the combustion chamber and the mass electrodes running laterally next to the side surfaces of the essentially prism-shaped attachment part essentially parallel to the prism edges of the cover surface or the base surface, whereby Two mass electrodes are combined to form a component, the two electrode arms of which run at least approximately parallel to two side surfaces of the attachment part of the center electrode.
- spark plugs which have a very high level of stability, in particular a low erosion of the electrodes, and yet can be operated with relatively low ignition voltages. If necessary, there should be a convenient adjustment facility with a defined electrode spacing.
- the attachment part on the central electrode preferably made of platinum or a platinum alloy
- the attachment part on the central electrode preferably made of platinum or a platinum alloy
- the erosion is limited due to the relatively large effective total length of the prism edges.
- the spark gaps are located between the attachment part and the mass electrodes running laterally next to the attachment part, essentially parallel to the prism edges of the top surface or the base surface, and thus practically surround the entire prism-shaped attachment part. Due to the parallel guidance of the mass electrodes to the side faces of the prism-shaped attachment part made of platinum, the electrode erosion, which is only present to a small extent anyway, is also relatively uniform.
- the ground electrodes are L-shaped and can be provided with platinum.
- the invention provides that from the apex of the electrode arms of the component which is V-shaped or Y-shaped in plan view, a common web leads to the body of the spark plug.
- this design Due to this design, an improved stability of the ground electrodes is achieved compared to L-shaped ground electrodes. Furthermore, this design also has a favorable effect on the adjustability of the electrode spacing between the ground electrodes and the center electrode, two electrode arms being adjustable jointly and simultaneously.
- the V- or Y-shaped component of the mass electrodes can be made of any metal, but preferably made of semi-precious metal such as e.g. Nickel, or from precious metal such as e.g. Platinum. Corresponding metal alloys or metal combinations are of course also possible, for example in such a way that the V- or Y-shaped component consists of a semi-precious metal as a support for a thin electrode layer made of noble metal, in particular of platinum or a platinum alloy.
- the mass electrodes consist of at least one carrier made of base metal or semi-precious metal, preferably nickel, which is provided with platinum or a platinum alloy facing the top part of the center electrode, the platinum or the platinum alloy is arranged as a thin electrode layer on the carrier and this electrode layer is formed by thin rods of platinum or a platinum alloy that are welded or soldered onto the carrier and parallel to the ground electrodes.
- Another preferred embodiment has a thin platinum electrode layer for the same purpose, this electrode layer being made from thin, welded or soldered onto the carrier and to the ground electrodes parallel rods made of platinum or a platinum alloy.
- FIG. 1 shows a side view of a spark plug according to the invention.
- Fig. 2 shows an enlarged plan view of the head of the spark plug facing the combustion chamber.
- Fig. 3 is a side view of Fig. 2 in the direction of arrow III in Fig. 2.
- Fig. 4 shows the central electrode in section.
- the spark plug shown in FIG. 1 has an insulating body 1 for isolating the central center electrode 2 from the metal housing 3, which is in operation during operation and which is formed in one piece with a hexagon nut 4 and a threaded part 5.
- the center electrode 2 has a prism-shaped attachment part 7 which is square in plan view and which consists of a platinum-rhodium alloy.
- the prism-shaped attachment part is carried by a pin-shaped part of the center electrode which projects into a central opening of the attachment part 7 and is welded or soldered to it.
- This pin-shaped part consists e.g. of a core 2A made of copper and a sheath 2B made of nickel (FIG. 4).
- the ground electrodes 8, 9 of the spark plug each consist of a carrier 8A, 8B, 9A, 9B made of base metal or semi-precious metal, for example nickel, connected to the ground ring 5A of the threaded part 5 on its arms 8B, 9B, facing the prism-shaped attachment part 7 of the center electrode 2, a thin layer 8C, 9C made of platinum or a platinum alloy, for example a platinum-rhodium alloy, is arranged, for example welded or soldered on.
- the carrier 8A, 8B or 9A, 9B has a Y-shape, the thin electrode layer 8C, 9C being arranged on the mutually facing inner sides of the two Y-electrode arms 8B, 9B and Two electrode arms 8B-8B and 9B-9B are connected to the ground ring 5A via a common web 8A and 9A.
Abstract
Description
Die Erfindung bezieht sich auf eine Zündkerze mit einer gegenüber dem Kerzengewinde isolierten Mittelelektrode und mit elektrisch mit dem Kerzengewinde verbundenen Massenelektroden, wobei am brennraumseitigen Ende der Mittelelektrode ein zumindest teilweise aus Platin oder einer Platinlegierung bestehender Aufsatzteil angebracht ist, zwischen dem und den von der Seite an ihn herangeführten Massenelektroden die Funkenstrecken liegen, wobei der Aufsatzteil im wesentlichen die Form eines mit der Deckfläche zum Brennraum weisenden Prismas aufweist und die Massenelektroden seitlich neben den Seitenflächen des im wesentlichen prismenförmigen Aufsatzteiles im wesentlichen parallel zu den Prismenkanten der Deckfläche bzw. der Grundfläche verlaufen, wobei je zwei Massenelektroden zu einem Bauteil zusammengefaßt sind, dessen beide Elektrodenarme wenigstens annähernd parallel zu je zwei Seitenflächen des Aufsatzteiles der Mittelelektrode verlaufen.The invention relates to a spark plug with a central electrode insulated from the candle thread and with ground electrodes electrically connected to the candle thread, an attachment part consisting at least partially of platinum or a platinum alloy being attached to the combustion chamber end of the central electrode, between which and from the side the spark gaps that are brought up to him are the spark gaps, the attachment part essentially having the shape of a prism with the cover surface facing the combustion chamber and the mass electrodes running laterally next to the side surfaces of the essentially prism-shaped attachment part essentially parallel to the prism edges of the cover surface or the base surface, whereby Two mass electrodes are combined to form a component, the two electrode arms of which run at least approximately parallel to two side surfaces of the attachment part of the center electrode.
Man ist an Zündkerzen interessiert, die eine sehr hohe Standfestigkeit, insbesondere einen geringen Abbrand der Elektroden aufweisen und dennoch mit relativ geringen Zündspannungen betreibbar sind. Im Bedarfsfall soll eine bequeme Nachstellmöglichkeit mit definiertem Elektrodenabstand gegeben sein.One is interested in spark plugs which have a very high level of stability, in particular a low erosion of the electrodes, and yet can be operated with relatively low ignition voltages. If necessary, there should be a convenient adjustment facility with a defined electrode spacing.
Bei Zündkerzen möchte man hohe lokale Feldstärken zwischen der Mittelelektrode und den Massenelektroden erzielen, um eine möglichst geringe Zündspannung zu benötigen. Solche hohen Feldstärken können durch spitze Elektrodenausbildungen erreicht werden. Allerdings hat man dann den Nachteil, daß diese Elektroden relativ schnell abbrennen. Eine Verbesserungsmöglichkeit besteht in der Verwendung von geeigneten Materialien. Bei den bisherigen Elektrodengeometrien hat man aber auch damit keine zufriedenstellenden Ergebnisse erzielt.With spark plugs, one would like to achieve high local field strengths between the center electrode and the ground electrodes in order to require the lowest possible ignition voltage. Such high field strengths can be achieved by using pointed electrodes. However, there is the disadvantage that these electrodes burn off relatively quickly. There is room for improvement in the use of suitable materials. However, no satisfactory results have been achieved with the previous electrode geometries.
Aus der Druckschrift DE-U-89 02 032 ist eine Elektrodengeometrie bekannt, bei der der Aufsatzteil auf der Mittelelektrode aus vorzugsweise Platin oder einer Platinlegierung im wesentlichen die Außenform eines Prismas aufweist, ist durch die scharfen Prismenkanten eine hohe örtliche Feldstärke und damit eine Absenkung der Zündspannung gegeben. Gleichzeitig hält sich der Abbrand durch die relativ große wirksame Gesamtlänge der Prismenkanten in Grenzen. Die Funkenstrecken liegen dabei zwischen dem Aufsatzteil und den seitlich neben dem Aufsatzteil im wesentlichen parallel zu den Prismenkanten der Deckfläche bzw. der Grundfläche verlaufenden Massenelektroden, umgeben also praktisch den gesamten prismenförmigen Aufsatzteil. Durch die parallele Führung der Massenelektroden zu den Seitenflächen des prismenförmigen Aufsatzteiles aus Platin ist der ohnehin nur im geringen Ausmaß vorhandene Elektrodenabbrand auch relativ gleichmäßig. Die Massenelektroden sind L-förmig ausgebildet und können mit Platin versehen sein.From the document DE-U-89 02 032 an electrode geometry is known, in which the attachment part on the central electrode, preferably made of platinum or a platinum alloy, essentially has the outer shape of a prism, due to the sharp prism edges, a high local field strength and thus a lowering of the Given ignition voltage. At the same time, the erosion is limited due to the relatively large effective total length of the prism edges. The spark gaps are located between the attachment part and the mass electrodes running laterally next to the attachment part, essentially parallel to the prism edges of the top surface or the base surface, and thus practically surround the entire prism-shaped attachment part. Due to the parallel guidance of the mass electrodes to the side faces of the prism-shaped attachment part made of platinum, the electrode erosion, which is only present to a small extent anyway, is also relatively uniform. The ground electrodes are L-shaped and can be provided with platinum.
Um die mechanische Stabilität der Massenelektroden zu erhöhen, die Wärmeableitung aus den Massenelektroden zu verbessern und gleichzeitig eine gute Einstellbarkeit des Elektrodenabstandes zu erlauben, ist erfindungsgemäß vorgesehen, daß vom Scheitel der Elektrodenarme des in der Draufsicht V- oder Y-förmig ausgebildeten Bauteiles ein gemeinsamer Steg zum Massekörper der Zündkerze führt.In order to increase the mechanical stability of the mass electrodes, to improve the heat dissipation from the mass electrodes and, at the same time, to allow good adjustment of the electrode spacing, the invention provides that from the apex of the electrode arms of the component which is V-shaped or Y-shaped in plan view, a common web leads to the body of the spark plug.
Durch diese Bauweise wird gegenüber L-förmigen Massenelektroden eine verbesserte Stabilität der Massenelektroden erzielt. Ferner wirkt sich diese Bauweise auch auf die Einstellbarkeit des Elektrodenabstandes zwischen den Massenelektroden und der Mittelelektrode günstig aus, wobei jeweils zwei Elektrodenarme gemeinsam und gleichzeitig einstellbar sind.Due to this design, an improved stability of the ground electrodes is achieved compared to L-shaped ground electrodes. Furthermore, this design also has a favorable effect on the adjustability of the electrode spacing between the ground electrodes and the center electrode, two electrode arms being adjustable jointly and simultaneously.
Der V- oder Y-förmige Bauteil der Massenelektroden kann aus beliebigem Metall, vorzugsweise jedoch aus Halbedelmetall wie z.B. Nickel, oder aus Edelmetall wie z.B. Platin, bestehen. Natürlich kommen auch entsprechende Metallegierungen in Betracht oder Metallkombinationen, etwa derart, daß der V- oder Y-förmige Bauteil aus einem Halbedelmetall als Träger für eine dünne Elektrodenschicht aus Edelmetall, insbesondere aus Platin oder einer Platinlegierung, besteht.The V- or Y-shaped component of the mass electrodes can be made of any metal, but preferably made of semi-precious metal such as e.g. Nickel, or from precious metal such as e.g. Platinum. Corresponding metal alloys or metal combinations are of course also possible, for example in such a way that the V- or Y-shaped component consists of a semi-precious metal as a support for a thin electrode layer made of noble metal, in particular of platinum or a platinum alloy.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist zur Einsparung von teurem Edelmetall vorgesehen, daß die Massenelektroden aus mindestens einem Träger aus unedlem Metall oder Halbedelmetall, vorzugsweise aus Nickel bestehen, der dem Aufsatzteil der Mittelelektrode zugewandt mit Platin oder einer Platinlegierung versehen ist, wobei das Platin oder die Platinlegierung als dünne Elektrodenschicht auf dem Träger angeordnet und diese Elektrodenschicht von dünnen, auf den Träger aufgeschweißten oder aufgelöteten und zu den Massenelektroden parallelen Stäbchen aus Platin oder einer Platinlegierung gebildet ist.According to a preferred embodiment of the invention, in order to save expensive precious metal, it is provided that the mass electrodes consist of at least one carrier made of base metal or semi-precious metal, preferably nickel, which is provided with platinum or a platinum alloy facing the top part of the center electrode, the platinum or the platinum alloy is arranged as a thin electrode layer on the carrier and this electrode layer is formed by thin rods of platinum or a platinum alloy that are welded or soldered onto the carrier and parallel to the ground electrodes.
Eine andere bevorzugte Ausführungsform weist zum selben Zweck eine dünne Platinelektrodenschicht auf, wobei diese Elektrodenschicht von dünnen, auf den Träger aufgeschweißten oder aufgelöteten und zu den Massenelektroden parallelen Stäbchen aus Platin oder einer Platinlegierung gebildet ist.Another preferred embodiment has a thin platinum electrode layer for the same purpose, this electrode layer being made from thin, welded or soldered onto the carrier and to the ground electrodes parallel rods made of platinum or a platinum alloy.
Die Erfindung wird nachstehend anhand der Zeichnungen durch ein Ausführungsbeispiel näher erläutert.The invention is explained below with reference to the drawings by an embodiment.
Die Fig. 1 zeigt eine Seitenansicht einer erfindungsgemäßen Zündkerze. Fig. 2 zeigt eine vergrößerte Draufsicht auf den dem Brennraum zugewandten Kopf der Zündkerze. Fig. 3 ist eine Seitenansicht der Fig. 2 in Richtung des Pfeiles III in Fig. 2. Fig. 4 zeigt die Mittelelektrode im Schnitt.1 shows a side view of a spark plug according to the invention. Fig. 2 shows an enlarged plan view of the head of the spark plug facing the combustion chamber. Fig. 3 is a side view of Fig. 2 in the direction of arrow III in Fig. 2. Fig. 4 shows the central electrode in section.
Die in Fig. 1 dargestellte Zündkerze weist einen Isolierkörper 1 zur Isolation der zentralen Mittelelektrode 2 gegenüber dem in Betrieb auf Masse liegenden Gehäuse 3 aus Metall auf, das einstückig mit einer Sechskantmutter 4 und einem Gewindeteil 5 ausgebildet ist.The spark plug shown in FIG. 1 has an insulating body 1 for isolating the
Die Mittelelektrode 2 weist, wie aus Fig. 2 - 4 hervorgeht, einen prismenförmigen, in Draufsicht quadratischen Aufsatzteil 7 auf, der aus einer Platin-Rhodium-Legierung besteht. Der prismenförmige Aufsatzteil wird von einem stiftförmigen Teil der Mittelelektrode getragen, der in eine zentrale Öffnung des Aufsatzteiles 7 ragt und mit diesem verschweißt oder verlötet wird. Dieser stiftförmige Teil besteht z.B. aus einem Kern 2A aus Kupfer und einer Hülle 2B aus Nickel (Fig. 4).As can be seen from FIGS. 2-4, the
Die Massenelektroden 8,9 der Zündkerze bestehen jeweils aus einem mit dem Massering 5A des Gewindeteiles 5 verbundenen Träger 8A,8B,9A,9B aus unedlem Metall oder Halbedelmetall, beispielsweise Nickel, auf dessen Armen 8B,9B, dem prismenförmigen Aufsatzteil 7 der Mittelelektrode 2 zugewandt, je eine dünne Schicht 8C,9C aus Platin oder einer Platinlegierung, beispielsweise einer Platin-Rhodium-Legierung angeordnet, beispielsweise angeschweißt oder angelötet ist.The
In Draufsicht auf den dem Brennraum zugewandten Kopf der Zündkerze weist der Träger 8A,8B bzw. 9A,9B eine Y-Form auf, wobei an den einander zugewandten Innenseiten der beiden Y-Elektrodenarme 8B,9B die dünne Elektrodenschicht 8C,9C angeordnet ist und je zwei Elektrodenarme 8B-8B bzw. 9B-9B über einen gemeinsamen Steg 8A bzw. 9A mit dem Massering 5A in Verbindung stehen.In plan view of the head of the spark plug facing the combustion chamber, the
Claims (4)
- A sparking plug comprising a central electrode (2) which is insulated relative to the plug screwthread (5) and earth electrodes (8, 9) electrically connected to the plug screwthread (5), wherein mounted to the end of the central electrode (2) which is towards the combustion chamber is an attachment portion (7) at least partially comprising platinum or a platinum alloy, the spark paths being between the attachment portion (7) and the earth electrodes (8, 9) which are taken to same from the side, wherein the attachment portion (7) is substantially in the form of a prism which faces with the top surface towards the combustion chamber and the earth electrodes (8, 9) extend laterally beside the side surfaces of the substantially prism-shaped attachment portion (7) substantially parallel to the prism edges of the top surface or the bottom surface, wherein each two earth electrodes (8, 9) are combined to form a component whose two electrode arms (8B, 9B) extend at least approximately parallel to a respective pair of side surfaces of the attachment portion (7) of the central electrode (2), characterised in that a common limb (8A, 9A) leads to the earth body (5A) of the sparking plug from the apex of the electrode arms (8B, 9B) of the component which is of V-shape or Y-shape in plan view.
- A sparking plug according to claim 1 characterised in that the earth electrodes (8, 9) comprise at least one carrier (8A, 8B; 9A, 9B) of base metal or semi-precious metal, preferably nickel, which is provided towards the attachment portion (7) of the central electrode (2) with platinum or a platinum alloy, wherein the platinum or the platinum alloy is arranged as a thin electrode layer (8C, 9C) on the carrier and said electrode layer is formed by thin bar portions of platinum or a platinum alloy which are welded or soldered on to the carrier (8A, 8B; 9A, 9B) and which are parallel to the earth electrodes.
- A sparking plug according to claim 1 characterised in that the earth electrodes (8, 9) comprise at least one carrier (8A, 8B; 9A, 9B) of base metal or semi-precious metal, preferably nickel, which is provided towards the attachment portion (7) of the central electrode (2) with platinum or a platinum alloy, wherein the platinum or the platinum alloy is vapour-deposited in the form of a thin electrode layer (8C, 9C) on the carrier (8A, 8B; 9A, 9B).
- A sparking plug according to claim 2 or claim 3 characterised in that the thin electrode layer (8C, 9C) is of a layer thickness of less than 1 mm, preferably of the order of magnitude of from about 0.1 mm to about 0.5 mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1402/90 | 1990-07-02 | ||
| AT140290A AT395788B (en) | 1989-02-21 | 1990-07-02 | Spark plug |
| PCT/AT1991/000075 WO1992000620A1 (en) | 1990-07-02 | 1991-06-28 | Sparking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0537231A1 EP0537231A1 (en) | 1993-04-21 |
| EP0537231B1 true EP0537231B1 (en) | 1995-09-06 |
Family
ID=3513118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91912246A Expired - Lifetime EP0537231B1 (en) | 1990-07-02 | 1991-06-28 | Sparking plug |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5369328A (en) |
| EP (1) | EP0537231B1 (en) |
| AT (1) | ATE127630T1 (en) |
| AU (1) | AU8059191A (en) |
| DE (1) | DE59106432D1 (en) |
| WO (1) | WO1992000620A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007121757A1 (en) * | 2006-04-20 | 2007-11-01 | Hosny Ibrahim Sabry | Spark plug |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675209A (en) * | 1995-06-19 | 1997-10-07 | Hoskins Manufacturing Company | Electrode material for a spark plug |
| US5623179A (en) * | 1995-12-04 | 1997-04-22 | Buhl; Richard | Multi fire spark plug |
| US6060822A (en) * | 1997-07-21 | 2000-05-09 | Century Development International Ltd. | Spark plug |
| US5936332A (en) * | 1997-07-21 | 1999-08-10 | Century Development International Ltd. | Spark plug |
| US6495948B1 (en) | 1998-03-02 | 2002-12-17 | Pyrotek Enterprises, Inc. | Spark plug |
| JP4433634B2 (en) * | 2000-06-29 | 2010-03-17 | 株式会社デンソー | Spark plug for cogeneration |
| US6628049B2 (en) | 2001-02-02 | 2003-09-30 | Pyrostars, Llc | Spark plug with simultaneously multi-firing cap |
| US6608430B1 (en) * | 2001-12-07 | 2003-08-19 | Robert J. Schaus | Spark plug with multi-point firing cap |
| FI115009B (en) * | 2003-03-18 | 2005-02-15 | Waertsilae Finland Oy | Method of manufacturing internal combustion engine spark plugs |
| JP2006228522A (en) * | 2005-02-16 | 2006-08-31 | Denso Corp | Spark plug for internal combustion engine |
| US7521849B2 (en) * | 2005-09-29 | 2009-04-21 | Federal-Mogul World Wide, Inc. | Spark plug with welded sleeve on electrode |
| US8657641B2 (en) * | 2009-09-11 | 2014-02-25 | Woodward Inc. | Method for forming an electrode for a spark plug |
| US9476347B2 (en) | 2010-11-23 | 2016-10-25 | Woodward, Inc. | Controlled spark ignited flame kernel flow in fuel-fed prechambers |
| US8584648B2 (en) | 2010-11-23 | 2013-11-19 | Woodward, Inc. | Controlled spark ignited flame kernel flow |
| US9172217B2 (en) | 2010-11-23 | 2015-10-27 | Woodward, Inc. | Pre-chamber spark plug with tubular electrode and method of manufacturing same |
| DE102012202335A1 (en) * | 2012-02-16 | 2013-08-22 | Robert Bosch Gmbh | Spark plug, in particular vortex chamber spark plug |
| US9856848B2 (en) | 2013-01-08 | 2018-01-02 | Woodward, Inc. | Quiescent chamber hot gas igniter |
| US9765682B2 (en) | 2013-06-10 | 2017-09-19 | Woodward, Inc. | Multi-chamber igniter |
| US8839762B1 (en) | 2013-06-10 | 2014-09-23 | Woodward, Inc. | Multi-chamber igniter |
| JP6580701B2 (en) | 2015-03-20 | 2019-09-25 | ウッドワード, インコーポレーテッドWoodward, Inc. | Parallel pre-combustion chamber ignition system |
| US9653886B2 (en) | 2015-03-20 | 2017-05-16 | Woodward, Inc. | Cap shielded ignition system |
| US9890689B2 (en) | 2015-10-29 | 2018-02-13 | Woodward, Inc. | Gaseous fuel combustion |
| DE112019003643T5 (en) * | 2018-09-26 | 2021-04-08 | Cummins Inc. | SPARK PLUG CONFIGURATIONS FOR A PRE-COMBUSTION CHAMBER OF A COMBUSTION ENGINE |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548239A (en) * | 1968-09-03 | 1970-12-15 | Champion Spark Plug Co | Spark plug electrode construction |
| DE3132814C2 (en) * | 1980-08-21 | 1984-10-25 | Nippondenso Co., Ltd., Kariya, Aichi | Spark plug for internal combustion engines |
| US4699600A (en) * | 1981-04-30 | 1987-10-13 | Nippondenso Co., Ltd. | Spark plug and method of manufacturing the same |
| JPS5859581A (en) * | 1981-10-01 | 1983-04-08 | 株式会社デンソー | Ignition plug |
| DE3730627A1 (en) * | 1986-09-12 | 1988-03-24 | Ngk Spark Plug Co | MIDDLE ELECTRODE ARRANGEMENT FOR A SPARK PLUG |
| US4826462A (en) * | 1988-08-19 | 1989-05-02 | Champion Spark Plug Company | Method for manufacturing a spark plug electrode |
| DE8902032U1 (en) * | 1989-02-21 | 1989-05-18 | Jenbacher Werke Ag, Jenbach, Tirol, At | |
| JP3010234B2 (en) * | 1990-08-08 | 2000-02-21 | 日本特殊陶業株式会社 | Spark plug with multiple outer electrodes |
-
1991
- 1991-06-28 AT AT91912246T patent/ATE127630T1/en not_active IP Right Cessation
- 1991-06-28 US US07/962,578 patent/US5369328A/en not_active Expired - Lifetime
- 1991-06-28 AU AU80591/91A patent/AU8059191A/en not_active Abandoned
- 1991-06-28 DE DE59106432T patent/DE59106432D1/en not_active Expired - Fee Related
- 1991-06-28 EP EP91912246A patent/EP0537231B1/en not_active Expired - Lifetime
- 1991-06-28 WO PCT/AT1991/000075 patent/WO1992000620A1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007121757A1 (en) * | 2006-04-20 | 2007-11-01 | Hosny Ibrahim Sabry | Spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992000620A1 (en) | 1992-01-09 |
| US5369328A (en) | 1994-11-29 |
| ATE127630T1 (en) | 1995-09-15 |
| EP0537231A1 (en) | 1993-04-21 |
| DE59106432D1 (en) | 1995-10-12 |
| AU8059191A (en) | 1992-01-23 |
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