EP1440497B1 - Connecting device for ignition systems of internal combustion engines - Google Patents
Connecting device for ignition systems of internal combustion engines Download PDFInfo
- Publication number
- EP1440497B1 EP1440497B1 EP02781138A EP02781138A EP1440497B1 EP 1440497 B1 EP1440497 B1 EP 1440497B1 EP 02781138 A EP02781138 A EP 02781138A EP 02781138 A EP02781138 A EP 02781138A EP 1440497 B1 EP1440497 B1 EP 1440497B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting means
- outer casing
- connecting device
- protective cap
- internal combustion
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 239000012777 electrically insulating material Substances 0.000 abstract 1
- 239000012858 resilient material Substances 0.000 abstract 1
- 230000000284 resting effect Effects 0.000 abstract 1
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 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
- H01T13/02—Details
- H01T13/04—Means providing electrical connection to sparking plugs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
-
- 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
- H01T13/40—Sparking plugs structurally combined with other devices
- H01T13/44—Sparking plugs structurally combined with other devices with transformers, e.g. for high-frequency ignition
Definitions
- the invention relates to a connection means for ignition systems of internal combustion engines according to the preamble of claim 1.
- connection means for connecting an ignition coil to a spark plug through the use of a spark plug, an ignition cable and a spark plug.
- This protective cap which is usually made of a special rubber compound, is particularly endangered in today's internal combustion engines. Contributing in particular as a burdening circumstances that in today's engines, a motor encapsulation takes place and as a result, the cap experiences a high temperature load.
- a connecting means known having a protective cap, which is constructed at least two layers and an inner sheath of electrical insulating material and on the inner sheath directly adjacent outer sheath of electrically conductive material which is electrically connected to ground potential.
- a connecting means with a flexible elastomeric inner shell known.
- US 5,890,473 A It is known to apply the outer shell on the inner shell as a sprayed layer.
- JP-60 122279 A is known to perform the outer sheath as a braid.
- the connecting means for ignition systems of internal combustion engines according to the invention with the characterizing features of claim 1 has the advantage that the aforementioned shortcomings are avoided.
- the connecting means according to the features of claim 1 is formed.
- the protective cap is at least two layers constructed with an inner sheath of electrical insulating material and with a directly on the inner sheath outer sheath of electrically conductive material, which is electrically connected to ground potential. By direct contact of the outer shell on the inner jacket air pockets are avoided. With the formation of the outer sheath of conductive material and the contact with the ground potential of the inner sheath is despite electrical spacing on the plug shaft to the cylinder head electrically set directly to ground potential.
- the outer jacket is flexibly applied to the inner shell, so that the connecting means in the region of the terminals for contacting is expandable, without changing its electrical properties.
- a connection means 11 for ignition systems of internal combustion engines 12 has, as in the FIG. 1 shown, the following main features: a first terminal 13 for an ignition coil 14, a second terminal 16 for a spark plug 17, an only hinted drawn, the two terminals 13, 16 connecting electrical conductors 18, and one, the terminals 13, 16 and the Head 18 at least partially sheathing protective cap 19th
- the connecting means 11 is positioned in a shaft 21, also referred to as a candle niche, in a cylinder head 22 of the internal combustion engine 12.
- the spark plug 14 is recessed in a known manner and mounted in a stationary manner.
- the protective cap 19 has, as in the FIG. 2 is executed, one, the terminals 13 and the conductor 18 facing inner shell 23 and an outer shell 24 which connects in the radial direction directly, without gaps, to the inner shell 23.
- the inner jacket 23 is made of an electrical insulating material, preferably of a silicone-based elastomer. Also possible would be an elastic plastic in the manner of a thermoplastic elastomer.
- the inner shell 23 is applied in one operation by injection molding to the provided as inserts in an injection molding tool, connected to the conductor 18 terminals 13, 16 with a layer thickness of about 3 mm.
- the inner jacket 23 projects beyond the connections 13, 16 at the front-side openings in the form of a sleeve. Thereby mating plug of the ignition coil 14 and the spark plug 17, which are connected to the terminals 13, 16, partially enclosed and sealed.
- the outer shell 24 is, like the inner shell 23, flexible, so that it is resiliently expandable during insertion of the connecting means 11 on the mating connector of the ignition coil 14 and the spark plug 17 and the composite with the inner shell 23 remains unchanged.
- the outer jacket 24 is electrically conductive. He has, in its longitudinal course adjacent to the first terminal 13, three axially spaced, mutually parallel sealing rings 27, the cross-sectional areas taper to the free ends as far as that the free ends are deflectable.
- the sealing rings 27 are dimensioned in their radial extent so that they come into contact with the insertion of the connecting means 11 in the shaft 21 on an inner side 28 of the shaft 21 with slight excess and on the one hand a shaft seal 29 and on the other hand electrical contact points 31 to the lying at ground potential Cylinder head 22 of the internal combustion engine 12 form.
- the outer jacket 24 is preferably made of an electrically conductive, sprayed directly on the outside 26 of the inner shell 23 elastomer based on silicone, so that a gap, cohesive connection between the shells 23, 24 is formed.
- the outer sheath 24 could also be formed by an on the outside 26 close-fitting, up and spring-back braided shielding made of electrically conductive metal.
- outer jacket 24 from a shrink tube, a thin-walled plastic tube or the like.
- the outer jacket 24 it is important for the function of the outer jacket 24 that this is made of an electrically conductive material and in its mechanical properties such as the inner jacket 23 up and resiliency. Thus, the conditions are created that the intimate distance-free dressing between the sheath 23, 24 is maintained even during insertion operations of the connecting means 11.
- the outer side 26 of the inner jacket 23 is electrically connected directly to the ground potential of the cylinder head 22 of the internal combustion engine 12 as the outer terminating layer of the electrical insulator of the connecting means 11, so that no intermediate insulating layers such as air gaps occur on this electrical path.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
Description
Die Erfindung geht aus von einem Verbindungsmittel für Zündanlagen von Brennkraftmaschinen nach der Gattung des Anspruchs 1.The invention relates to a connection means for ignition systems of internal combustion engines according to the preamble of claim 1.
Es ist durch die
Diese zumeist aus einer speziellen Gummimischung gefertigte Schutzkappe ist bei den heutigen Brennkraftmaschinen in besonderem Maße gefährdet. Dazu tragen insbesondere als belastende Umstände bei, daß bei heutigen Motoren eine Motorkapselung erfolgt und in Folge dessen die Schutzkappe eine hohe Temperaturbelastung erfährt.This protective cap, which is usually made of a special rubber compound, is particularly endangered in today's internal combustion engines. Contributing in particular as a burdening circumstances that in today's engines, a motor encapsulation takes place and as a result, the cap experiences a high temperature load.
Des weiteren werden bei Vierventilmotoren tiefe Kerzennischen verwirklicht, die mit einer Nischenabdichtung verschlossen werden. Damit kann sich in der Kerzennische aufgrund des fehlenden Luftaustausches eine aggressive Atmosphäre anreichern, die die Schutzkappe angreift.Furthermore, in four-valve engines deep candle niches are realized, which are closed with a niche seal. This can be in the candle niche due to the lack of air exchange enrich an aggressive atmosphere that attacks the cap.
Schließlich werden heutzutage lange Zündkerzenstandzeiten vorgeschrieben. Um trotzdem auch am Ende der Standzeit noch die volle Funktionsfähigkeit der Zündanlage garantieren zu können, gibt es eine Tendenz zu höheren Zündspannungen, die die elektrisch Isolierfähigkeit der Schutzkappe durch Spannungsüberschläge gefährden. Diese Spannungsüberschläge oder Teilentladungen erfolgen von der Schutzkappenoberfläche zu dem auf Massepotential liegenden Zylinderkopf der Brennkraftmaschine, wenn zwischen der Schutzkappenoberfläche und der Oberfläche mit dem Massepotential elektrisch isolierende Lufteinschlüsse oder Luftspalte vorhanden sind.Finally, long spark plug life is required nowadays. In order to still be able to guarantee the full functionality of the ignition system at the end of the service life, there is a tendency for higher ignition voltages, which jeopardize the electrically insulating capability of the protective cap due to flashovers. These voltage flashovers or partial discharges take place from the protective cap surface to the cylinder head of the internal combustion engine at ground potential, if electrically insulating air pockets or air gaps are present between the protective cap surface and the surface with the ground potential.
Die vorgenannten Umstände können einzeln oder in Kombination zu einer Versprödung der Schutzkappe und damit zu einem Ausfall des Verbindungsmittels führen. Den größten Einfluß auf die Versprödung der Schutzkappe haben dabei die Teilentladungen, so daß insbesondere diese Schädigungsart zu vermeiden ist.The aforementioned circumstances, individually or in combination, lead to embrittlement of the protective cap and thus to failure of the connecting means. The greatest influence on the embrittlement of the cap have the partial discharges, so that in particular this type of damage is to be avoided.
Aus der
Das erfindungsgemäße Verbindungsmittel für Zündanlagen von Brennkraftmaschinen mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß die zuvor erwähnten Unzulänglichkeiten vermieden werden. Dazu ist das Verbindungsmittel gemäß den Merkmalen des Anspruchs 1 ausgebildet. Die Schutzkappe ist wenigstens zweischichtig aufgebaut mit einem Innenmantel aus elektrischem Isolierstoff und mit einem auf dem Innenmantel direktaufliegenden Außenmantel aus elektrisch leitfähigen Material, der elektrisch mit Massepotential in Verbindung steht. Durch die Direktauflage des Außenmantels auf dem Innenmantel werden Lufteinschlüsse vermieden. Mit der Ausbildung des Außenmantels aus leitfähigem Material und der Kontaktierung mit dem Massepotential wird der Innenmantel trotz räumlicher Beabstandung über den Kerzenschacht zum Zylinderkopf elektrisch unmittelbar auf Massepotential gelegt.The connecting means for ignition systems of internal combustion engines according to the invention with the characterizing features of claim 1 has the advantage that the aforementioned shortcomings are avoided. For this purpose, the connecting means according to the features of claim 1 is formed. The protective cap is at least two layers constructed with an inner sheath of electrical insulating material and with a directly on the inner sheath outer sheath of electrically conductive material, which is electrically connected to ground potential. By direct contact of the outer shell on the inner jacket air pockets are avoided. With the formation of the outer sheath of conductive material and the contact with the ground potential of the inner sheath is despite electrical spacing on the plug shaft to the cylinder head electrically set directly to ground potential.
Mit diesen Maßnahmen werden Spannungsüberschläge an der Schutzkappe wirksam verhindert , so daß auf diese Weise keine Versprödung der Schutzkappe mehr stattfindet und die Schutzkappe auch unter ungünstigen Betriebsbedingungen funktionsstabil bleibt.With these measures voltage flashovers on the cap are effectively prevented, so that in this way no embrittlement of the cap takes place more and the cap remains functionally stable even under unfavorable operating conditions.
In den Unteransprüchen sind vorteilhafte Maßnahmen für die Realisierung der Erfindung angegeben.In the dependent claims advantageous measures for the realization of the invention are given.
Nach Anspruch 2 ist der Außenmantel flexibel auf dem Innenmantel aufgebracht, so daß das Verbindungsmittel im Bereich der Anschlüsse zur Kontaktierung aufweitungsfähig ist, ohne dabei seine elektrischen Eigenschaften zu verändern.According to claim 2, the outer jacket is flexibly applied to the inner shell, so that the connecting means in the region of the terminals for contacting is expandable, without changing its electrical properties.
Nach Anspruch 3 ist eine Möglichkeit aufgezeigt, bei der durch das Aufbringen des Außenmantels keine nennenswerte Volumensvergrößerung des Verbindungsmittels auftritt.According to claim 3, a possibility is shown in which no appreciable increase in volume of the connecting means occurs by the application of the outer shell.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der Figurenbeschreibung näher erläutert. Jeweils in einer Schnittdarstellung ist das Verbindungsmittel in der
Ein Verbindungsmittel 11 für Zündanlagen von Brennkraftmaschinen 12 weist, wie in der
Das Verbindungsmittel 11 ist positioniert in einem auch als Kerzennische bezeichneten Schacht 21 in einem Zylinderkopf 22 der Brennkraftmaschine 12. In dem Schacht 21 ist in bekannter Weise die Zündkerze 14 vertieft und ortsfest gelagert.The
Die Schutzkappe 19 weist, wie in der
Der Innenmantel 23 besteht aus einem elektrischen Isolierstoff, vorzugsweise aus einem Elastomer auf Silikonbasis. Möglich wäre auch ein elastischer Kunststoff in der Art eines thermoplastischen Elastomers. Der Innenmantel 23 wird in einem Arbeitsgang im Spritzgießverfahren an den als Einlegeteile in einem Spritzwerkzeug bereitgestellten, mit dem Leiter 18 verbundenen Anschlüsse 13, 16 mit einer Schichtdicke von etwa 3 mm aufgebracht. Der Innenmantel 23 überragt die Anschlüsse 13, 16 an deren stirnseitigen Öffnungen hülsenförmig. Dadurch werden Gegenstecker der Zündspule 14 und der Zündkerze 17, die mit den Anschlüssen 13, 16 verbunden werden, partiell umschlossen und abgedichtet.The
Auf einer Außenseite 26 des Innenmantels 23 ist der Außenmantel 24 ohne Zwischenräume aufgebracht. Der Außenmantel 24 ist, wie der Innenmantel 23, flexibel, so daß er beim Steckvorgang des Verbindungsmittels 11 auf die Gegenstecker der Zündspule 14 und der Zündkerze 17 rückfedernd aufweitungsfähig ist und der Verbund mit dem Innenmantel 23 dabei unverändert bleibt.On an
Im Gegensatz zum Innenmantel 23 ist der Außenmantel 24 jedoch elektrisch leitend. Er weist, in seinem Längsverlauf dem ersten Anschluß 13 benachbart, drei axial beabstandete, parallel zueinander angeordnete Dichtringe 27 auf, deren Querschnittsflächen zu den freien Enden hin sich soweit verjüngen, daß die freien Enden abbiegungsfähig sind.In contrast to the
Die Dichtringe 27 sind in ihrer radialen Erstreckung so bemessen, daß sie beim Einführen des Verbindungsmittels 11 in den Schacht 21 an einer Innenseite 28 des Schachtes 21 mit geringem Übermaß zur Anlage kommen und einerseits eine Schachtabdichtung 29 sowie andererseits elektrische Kontaktstellen 31 zu dem auf Massepotential liegenden Zylinderkopf 22 der Brennkraftmaschine 12 bilden.The
Der Außenmantel 24 besteht vorzugsweise aus einem elektrisch leitfähigen, direkt auf die Außenseite 26 des Innenmantels 23 aufgespritzen Elastomer auf Silikonbasis, so daß eine lückenlose, stoffschlüssige Verbindung zwischen den Mänteln 23, 24 gebildet ist.The
Alternativ könnte der Außenmantel 24 auch durch ein auf der Außenseite 26 enganliegendes, auf- und rückfederungsfähiges Schirmgeflecht aus elektrisch leitfähigem Metall gebildet sein.Alternatively, the
Möglich ist es auch, den Außenmantel 24 aus einem Schrumpfschlauch, einem dünnwandigen Kunststoffrohr oder ähnlichem zu bilden.It is also possible to form the
In jedem Fall ist es für die Funktion des Außenmantels 24 wichtig, daß dieser aus einem elektrisch leitfähigem Material besteht und in seinen mechanischen Eigenschaften wie der Innenmantel 23 auf- und rückfederungsfähig ist. Damit sind die Voraussetzungen geschaffen, daß der innige abstandsfreie Verband zwischen den Mäntels 23, 24 auch bei Steckvorgängen des Verbindungsmittels 11 erhalten bleibt.In any case, it is important for the function of the
Durch den elektrisch leitfähigen Außenmantel 24 ist die Außenseite 26 des Innenmantels 23 als außenliegende Abschlußschicht des elektrischen Isolators des Verbindungsmittels 11 elektrisch unmittelbar mit dem Massepotential des Zylinderkopfes 22 der Brennkraftmaschine 12 verbunden, so daß auf diesem elektrischen Pfad keine zwischenliegenden Isolierschichten wie Luftspalte auftreten.As a result of the electrically conductive
Damit können sich an dem Verbindungsmittel 11 beim Betrieb der Zündanlage keine elektrischen Teilentladungen mehr ausbilden, so daß die Schutzkappe 19 vor Versprödung aufgrund elektrischer Einflüsse geschützt ist und das Verbindungsmittel 11 in dieser Hinsicht auch unter ungünstigen Betriebsbedingungen funktionsstabil bleibt.Thus, no electrical partial discharges can form more on the
Claims (6)
- Connecting means for ignition systems of internal combustion engines, with a first connection (13) for an ignition coil (14) and a second connection (16) for a spark plug (17), with a conductor (18) electrically connecting the connections (13, 16), and with a protective cap (19) at least partially encasing these parts, wherein the protective cap (19) is built up of at least two layers and comprises an inner casing (23) of electrical insulating material which faces the parts and an outer casing (24) of electrically conductive material which bears directly on the inner casing (23) and which is electrically connected to earth potential, characterized in that the electrical connection of the outer casing (24) to earth potential takes place via a shaft seal (29) embodied at the outer casing (24).
- Connecting means according to Claim 1, characterized in that the outer casing (24) is applied flexibly to the inner casing (23), which consists of an elastomer.
- Connecting means according to Claim 2, characterized in that the outer casing (24) is applied to the inner casing (23) as a sprayed layer.
- Connecting means according to Claim 3, characterized in that the outer casing (24) is an elastomer.
- Connecting means according to Claim 2, characterized in that the outer casing (24) is a shielding braid made of metal.
- Connecting means according to Claim 2, characterized in that the outer casing (24) is a shrink-fit tube.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10152085 | 2001-10-23 | ||
| DE10152085A DE10152085A1 (en) | 2001-10-23 | 2001-10-23 | Lanyards for ignition systems of internal combustion engines |
| PCT/DE2002/003961 WO2003038958A1 (en) | 2001-10-23 | 2002-10-21 | Connecting device for ignition systems of internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1440497A1 EP1440497A1 (en) | 2004-07-28 |
| EP1440497B1 true EP1440497B1 (en) | 2011-06-29 |
Family
ID=7703305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02781138A Expired - Lifetime EP1440497B1 (en) | 2001-10-23 | 2002-10-21 | Connecting device for ignition systems of internal combustion engines |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6932627B2 (en) |
| EP (1) | EP1440497B1 (en) |
| JP (1) | JP4348184B2 (en) |
| DE (1) | DE10152085A1 (en) |
| WO (1) | WO2003038958A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7594489B1 (en) * | 2007-01-19 | 2009-09-29 | Marshall Electric Corp. | High voltage extender |
| DE102010063508A1 (en) * | 2010-12-20 | 2012-06-21 | Robert Bosch Gmbh | Ignition coil with connection device |
| US10008830B2 (en) * | 2016-05-18 | 2018-06-26 | Marshall Electric Corp. | High-voltage extender for connecting a spark plug to a high-voltage source |
| US9923300B2 (en) * | 2016-05-18 | 2018-03-20 | Marshall Electric Corp. | Semi-rigid high-voltage extender |
| CN107332109A (en) * | 2017-04-26 | 2017-11-07 | 周向进 | The spark plug and its internal combustion engine and automobile of a kind of flame |
| DE102018108292B4 (en) * | 2017-11-17 | 2023-05-11 | Borgwarner Ludwigsburg Gmbh | Connector for connecting an ignition coil to a spark plug and protective tube for a connector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2987587A (en) * | 1959-07-16 | 1961-06-06 | Hallett Mfg Company | Electrically shielded cap for a unit of the ignition system of internal-combustion engines |
| JPS60122279A (en) * | 1983-12-05 | 1985-06-29 | Ngk Spark Plug Co Ltd | Noise prevention device of igniter |
| US5890473A (en) * | 1996-02-06 | 1999-04-06 | Robert Bosch Gmbh | Ignition device for a multi-cylinder internal combustion engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423624A (en) * | 1982-02-24 | 1984-01-03 | Creative Tool Company | Diesel timing light |
| DE3544870A1 (en) | 1985-12-18 | 1987-06-19 | Beru Werk Ruprecht Gmbh Co A | SPARK PLUG |
| JPH08144918A (en) | 1994-11-17 | 1996-06-04 | Sumitomo Wiring Syst Ltd | Igniter for internal combustion engine |
| DE19509793C2 (en) | 1995-03-17 | 1997-04-30 | Audi Ag | Spark plug connector |
| DE69723337T2 (en) | 1996-03-21 | 2004-04-15 | Hitachi, Ltd. | Igniter for an internal combustion engine |
| DE19612508C2 (en) | 1996-03-29 | 2000-05-04 | Bremi Auto Elektrik Ernst Brem | Connector |
-
2001
- 2001-10-23 DE DE10152085A patent/DE10152085A1/en not_active Ceased
-
2002
- 2002-10-21 JP JP2003541106A patent/JP4348184B2/en not_active Expired - Fee Related
- 2002-10-21 EP EP02781138A patent/EP1440497B1/en not_active Expired - Lifetime
- 2002-10-21 US US10/433,079 patent/US6932627B2/en not_active Expired - Fee Related
- 2002-10-21 WO PCT/DE2002/003961 patent/WO2003038958A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2987587A (en) * | 1959-07-16 | 1961-06-06 | Hallett Mfg Company | Electrically shielded cap for a unit of the ignition system of internal-combustion engines |
| JPS60122279A (en) * | 1983-12-05 | 1985-06-29 | Ngk Spark Plug Co Ltd | Noise prevention device of igniter |
| US5890473A (en) * | 1996-02-06 | 1999-04-06 | Robert Bosch Gmbh | Ignition device for a multi-cylinder internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10152085A1 (en) | 2003-04-30 |
| JP2005507057A (en) | 2005-03-10 |
| EP1440497A1 (en) | 2004-07-28 |
| US20040065286A1 (en) | 2004-04-08 |
| JP4348184B2 (en) | 2009-10-21 |
| US6932627B2 (en) | 2005-08-23 |
| WO2003038958A1 (en) | 2003-05-08 |
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