EP1929490B1 - Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage - Google Patents
Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage Download PDFInfo
- Publication number
- EP1929490B1 EP1929490B1 EP06778426A EP06778426A EP1929490B1 EP 1929490 B1 EP1929490 B1 EP 1929490B1 EP 06778426 A EP06778426 A EP 06778426A EP 06778426 A EP06778426 A EP 06778426A EP 1929490 B1 EP1929490 B1 EP 1929490B1
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- Prior art keywords
- secondary winding
- winding
- transformer
- distance
- extremity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/12—Ignition, e.g. for IC engines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/12—Ignition, e.g. for IC engines
- H01F2038/122—Ignition, e.g. for IC engines with rod-shaped core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Definitions
- the invention relates to a Stabzünd transformer for supplying an ignition means with high voltage.
- the rod ignition transformer has a main core region about which a first inner winding and a second outer winding are arranged concentrically with the longitudinal axis of the rod ignition transformer.
- One of the windings is a primary winding and the other winding is a secondary winding.
- Stabzündtransformatoren are known in which the transformer core is connected to a ground potential of the motor vehicle, whereby the transformer core has this ground potential.
- the primary coil is arranged inside coaxially around the transformer core around and the secondary coil is arranged externally around the primary coil around coaxially, wherein the secondary coil is surrounded by a jacket of insulating material outside.
- bar ignition transformers are known in which the secondary coil is arranged on the inside around the transformer core.
- the primary coil is arranged externally around the secondary coil, whereby these bar-type ignition transformers are also referred to as external secondary coil-bar transformers.
- the transformer core is electrically connected to no potential, so that the potential of the transformer core due to a capacitive coupling to a center potential between the ground potential and the generated high voltage potential.
- the insulating material of the insulating jacket is at least locally heavily stressed by arranged in the vicinity of the insulating potential-carrying components.
- a rod ignition coil is known in which one of the windings is designed as a helical winding.
- the known Stabzündtransformatoren generally have the disadvantage that the insulating materials used are heavily loaded locally uneven. However, the insulation capacity of the insulating material and the thickness of the insulating material must be designed according to the maximum load occurring. In addition, in a skew winding of the primary winding and / or the secondary winding by design measures to prevent slippage of individual wires become. When skew winding only a portion of the cylindrical position of a coil winding is wound with a winding wire, which then on this Location produced further layer is not wrapped back to the beginning of the first layer. The subsequently wound on the second layer third layer has the same width as the first layer, so that it is arranged offset from the first layer.
- skew windings are also referred to as crawl windings and are particularly useful in manuals for winding machines, e.g. from winding machines of the company Marsilli described.
- the object of the invention is to provide a bar ignition transformer for supplying an ignition means, in particular a spark plug of an internal combustion engine, with a high voltage, in which the load of the insulating material for the isolation of the secondary coil is reduced.
- a Stabzündtransformator for supplying an ignition means, in particular a spark plug of an internal combustion engine with high voltage ensures that in the range of large potential differences, a thicker insulating material is available than in areas with lower potential differences.
- the insulating material for the isolation of the secondary coil is subjected to less stress than conventional Stabzündtransformatoren. Pointy heavy loads of the insulating material are avoided. These strong punctual loads are caused by large local potential differences, which are also referred to as hot spots. In areas of such hot spots, the insulating material is heavily stressed.
- the insulation of the entire Stabzündtransformators is designed for these hot spots, so that in areas with lower potential differences more insulating material is present as for the isolation of high-voltage components of the pencil ignition coil is necessary.
- the insulation material is heavily stressed, whereby the life of the insulating material especially at these hot spots is reduced by the stress.
- a second aspect of the invention relates to an arrangement with a combined Zündtransformator- and Zündffenech, preferably for an internal combustion engine that operates on the Otto principle.
- the arrangement has an ignition means which has an insulating body between a spark gap formed by means of electrodes and a high voltage terminal.
- the cross section of the insulating material decreases at least in the region of the secondary winding of the ignition transformer with increasing distance from the electrodes of the ignition means.
- the secondary winding and the primary winding of the ignition transformer are arranged concentrically to the longitudinal axis of the insulating material.
- the insulating body serves as a bobbin for the secondary coil of the ignition transformer.
- a conical design and arrangement of the secondary coil of the ignition transformer is achieved in a simple manner.
- Fig. 1 a section of a known Stabzünd transformer is shown.
- Such Stabzündtransformatoren are for example from the documents DE 199 12 376 C2 . DE 103 60 338 A1 . DE 109 211 A1 . DE 102 56 802 D3, DE 199 02 497 A1 . DE 199 27 820 C1 such as DE 136 528 A1 known.
- a rod ignition transformer 10 is shown, which is designed for connection to a spark plug, not shown, wherein the Stabzündtransformator 10 in the region 12 has an opening for receiving a terminal portion of a spark plug. At least the lower portion of the Stabzündtransformators 10 is inserted into a provided in a cylinder head of an internal combustion engine shaft.
- the rod-firing transformer 10 includes a substantially cylindrical rod core 14 formed of soft magnetic iron or a magnetic material and extending along the longitudinal axis 11 of the rod ignition transformer 10.
- a secondary winding 16 is arranged on a bobbin coaxially around the rod core 14. A winding end of the secondary winding 16 is connected to the mass of the motor vehicle serving as a reference potential.
- the other terminal of the secondary winding 16 is connected to a high voltage terminal 18 of a spark plug.
- Fig. 1 are the potentials and the connections the coils and the spark plug is shown only schematically outside the Stabzündtransformators 10.
- the spaces between the primary winding 22, the secondary winding 16 and the bobbin 18 are preferably with a Cast insulating material.
- On the insulating housing 24 may be present a return plate, which forms a magnetic circuit of the Stabzündtransformators 10 as a return element with the rod core 14. If the rod core 14 is also connected to the ground potential, the secondary winding 16 must be insulated from the rod core 14 accordingly.
- the bobbin 18 is made of a plastic, by which the secondary winding 16 is sufficiently insulated from the rod core 14.
- a potting compound may be filled between the bobbin 18 and the rod core 14.
- the secondary winding 16 is electrically insulated from the primary winding 22 by the casting compound filled between these windings 16, 22.
- the secondary winding 16, the primary winding 22, the rod core 14 and / or the housing 24 may be electrically insulated with a thermoplastic and / or a thermosetting material.
- the thermoplastic or thermoset material is preferably applied to the component to be insulated 16, 22, 14, 24 by a spraying method.
- a relatively uniform potential distribution from one end of the secondary winding 16 to the other end of the secondary winding 16 can be achieved, whereby only in one area large potential differences between the rod core 14 and the secondary winding 16 and between the secondary winding 16 and the primary winding 22 occur.
- the power output stage of the control unit 26 comprises a high-power transistor, which is operated as a switch.
- high-power transistors are in particular bipolar transistors, MOSFETs and insulated gate bipolar transistors (IGBT).
- IGBT insulated gate bipolar transistors
- This voltage is supplied to the high voltage terminal 20 of a first electrode of the spark plug.
- Another second electrode of the spark plug forming a spark gap with the first electrode is permanently connected to the ground potential.
- an arc is generated between the two electrodes, which causes ignition of the combustion chamber located in the fuel-air mixture.
- FIG. 2 an inventive Stabzündtransformator 30 is shown, their structure and operation similar to the Stabzündtransformator 10 after Fig. 1 is. Like elements have the same reference numerals.
- the rod core 14 in the present embodiment has a circular cross-section and extends along the longitudinal axis of the Stabzündtransformators 30.
- the secondary winding 32 is designed as a skew winding, wherein the winding process at the top of the in Fig. 2 shown secondary winding 32 has been started.
- the secondary winding 32 and the primary winding 22 are arranged radially about the longitudinal axis 11 of the pencil ignition coil 30.
- the radial cross section of the secondary winding 32 increases from the upper end of the secondary winding 32 to the lower end of the secondary winding 32 toward, so that the distance of the secondary winding 32 to the lateral surface of the rod core 14 from the upper end to the lower end of the secondary winding 32 increases continuously. As a result, the isolation distance between the The lateral surface of the rod core 14 and the secondary winding 32 increases continuously.
- the potential distribution of the secondary winding 32 from the lower end to the upper end takes place substantially uniformly over the length of the secondary winding 32, so that ground potential is present at the lower end and high-voltage potential at the upper end.
- the rod core 14 is electrically connected to the high voltage potential.
- the potential difference is equal to the high voltage potential of the rod core 14, since this end of the secondary winding 32 is at ground potential.
- the secondary winding 32 Due to the oblique arrangement of the secondary winding 32, however, a relatively large distance between the inside of the secondary winding 32 and the lateral surface of the rod core 14 at the lower end of the secondary winding 32 is present, which serves as an isolation distance. In this insulation distance, either air or another insulating material, in particular an insulating resin, may be present. The introduction of insulating gases in this space is possible.
- the flow behavior of a potting compound in a vacuum potting process relative to the rod-firing transformer 10 is provided by the funnel-shaped gap between the secondary winding 32 and the primary winding 22 the rod ignition transformer 30 after Fig. 2 improved, whereby existing residual gases can better ascend from the spaces in the Stabzündtransformator 30.
- oblique arrangement of the secondary winding 32 of the Stabzündtransformators 30 can be achieved with the same outer geometry functional advantages.
- a higher high voltage more energy for generating the arc or the spark generated and / or the primary current can be reduced.
- the life of the Stabzündtransformators 30 are extended by the oblique arrangement of the secondary winding 32 considerably in consequence of the lower stress of the insulating material.
- the secondary winding 32 is designed as a skew winding, wherein the skew winding in the region with the smallest inner cross section of the secondary winding 32 is started, so that the winding direction of the skew winding is directed against the conicity of the secondary winding 32.
- the Konizticianswinkel and the skew angle are added, whereby adjacent turns have a lower potential difference than, for example, in cylinder windings.
- the lacquer insulation of the winding wires is thereby not stressed so much, whereby a longer life of the enameled wire insulation is achieved and the probability of Windungs finallyn is reduced. Furthermore, thereby slipping of wires in the skew winding is prevented.
- FIG. 3 is a side view of a Stabzündtransformator spark plug combination 40 according to the invention shown.
- the squib transformer spark plug combination 40 has an insulative housing 48, at the top thereof a hexagonal engagement portion 50 for threading the squib transformer spark plug combination 40 into a threaded opening in a cylinder head of a motor vehicle and for torquing the spark plug spark plug combination 40 with a prescribed torque is provided.
- an opening for inserting a lead which electrically connects the rod transformer spark plug combination 40 to the control unit 26 for driving the rod transformer.
- On the underside of the insulating housing 48 is an external thread 42 for screwing into a spark plug opening in the cylinder head of the motor vehicle over.
- the outer thread 42 is preferably made of a metallic material, whereby the Stabzündtransformator spark plug combination 40 is preferably connected via this external thread 42 to the ground potential of the motor vehicle when the external thread 42 is screwed into the metallic cylinder head.
- the counter electrode 46 is electrically connected to the external thread 42 and thus to the ground potential of the motor vehicle.
- Fig. 4 is a sectional view of the Stabzündtransformator spark plug combination 40 along the section line AA after Fig. 3 shown.
- a primary winding 52 is arranged on the inner wall of the insulating housing 48.
- the high voltage electrode 44 is electrically connected to a transformer core 54, the transformer core 54 and the electrical connection between the transformer core 54 and the high voltage electrode 44 being surrounded by an insulating body 56, preferably made of ceramic or porcelain.
- the Isolierstoff Chemistry 56 serves as a bobbin for the secondary winding 58.
- the cross section of the Isolierstoff stresses 56 continuously decreases from the lower end of the secondary winding 58 to the upper end of the secondary winding 58 back, so that the distance between the lateral surface of the secondary winding 58th and the inside of the primary winding 52 increases continuously upward.
- the potential of the secondary winding 58 continuously increases from the lower end of the secondary winding 58 to the upper end of the secondary winding 58.
- the transformer core 54 is electrically connected to the high voltage potential of the secondary winding 58.
- the primary winding 52 has Gleichstromograph considered ground potential or supply voltage potential of the motor vehicle, so that in the upper part of the secondary winding 58, a large potential difference between the primary winding 52 and secondary winding 58 and the lower portion of the secondary winding 58, a small potential difference between the secondary winding 58 and the primary winding 52 occurs.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
Description
Die Erfindung betrifft einen Stabzündtransformator zur Versorgung eines Zündmittels mit Hochspannung. Der Stabzündtransformator hat einen Hauptkernbereich, um den konzentrisch zur Längsachse des Stabzündtransformators eine erste innere Wicklung und eine zweite äußere Wicklung angeordnet sind. Eine der Wicklungen ist eine Primärwicklung und die andere Wicklung ist eine Sekundärwicklung.The invention relates to a Stabzünd transformer for supplying an ignition means with high voltage. The rod ignition transformer has a main core region about which a first inner winding and a second outer winding are arranged concentrically with the longitudinal axis of the rod ignition transformer. One of the windings is a primary winding and the other winding is a secondary winding.
Aufgrund einer angestrebten geringen Baugröße von Stabzündtransformatoren sowie der thermischen und mechanischen Beanspruchung solcher Stabzündtransformatoren im Motorraum eines Kraftfahrzeugs sind insbesondere die Isolierstoffe zur Isolation der hochspannungsführenden Elemente stark belastet. Bei einer grenzwertigen Belastung der Isolierstoffe altern diese schneller und die Lebensdauer eines solchen Stabzündtransformators ist erheblich reduziert. Ferner müssen derzeit sehr hochwertige Isolierstoffe eingesetzt werden, um die erforderliche Isolationswirkung überhaupt auf dem zur Verfügung stehenden Raum zu erreichen. Auch kann die von derzeit eingesetzten Stabzündtransformatoren erzeugte Hochspannung nicht weiter erhöht werden, wodurch die Gestaltungsfreiheit bei der Konzeption eines Zündsystems für eine Brennkraftmaschine eingeschränkt ist.Due to a desired small size of Stabzündtransformatoren and the thermal and mechanical stress of such Stabzündtransformatoren in the engine compartment of a motor vehicle in particular the insulating materials for the isolation of high-voltage-carrying elements are heavily loaded. With a borderline load of the insulating materials, these age faster and the life of such a Stabzünd transformer is significantly reduced. Furthermore, currently very high quality insulating materials must be used to achieve the required isolation effect at all on the available space. Also, the high voltage generated by currently used Stabzündtransformatoren can not be further increased, whereby the design freedom is limited in the design of an ignition system for an internal combustion engine.
Es sind Stabzündtransformatoren bekannt, bei denen der Transformatorkern mit einem Massepotential des Kraftfahrzeugs verbunden ist, wodurch der Transformatorkern dieses Massepotential hat. Bei diesen bekannten Stabzündtransformatoren ist die Primärspule innenliegend koaxial um den Transformatorkern herum angeordnet und die Sekundärspule ist außen um die Primärspule herum koaxial angeordnet, wobei die Sekundärspule außen durch einen Mantel aus Isolierstoff umgeben ist.Stabzündtransformatoren are known in which the transformer core is connected to a ground potential of the motor vehicle, whereby the transformer core has this ground potential. In these known Stabzündtransformatoren the primary coil is arranged inside coaxially around the transformer core around and the secondary coil is arranged externally around the primary coil around coaxially, wherein the secondary coil is surrounded by a jacket of insulating material outside.
Ferner sind Stabzündtransformatoren bekannt, bei denen die Sekundärspule innenliegend um den Transformatorkern herum angeordnet ist. Die Primärspule ist bei diesen Anordnungen außen um die Sekundärspule herum angeordnet, wodurch diese Stabzündtransformatoren auch als Stabzündtransformatoren mit außen liegender Sekundärspule bezeichnet werden. Der Transformatorkern ist mit keinem Potential elektrisch leitend verbunden, so dass sich das Potential des Transformatorkerns aufgrund einer kapazitiven Kopplung auf ein Mittenpotential zwischen dem Massepotential und dem erzeugten Hochspannungspotential einstellt. Bei Stabzündtransformatoren mit außen liegender Sekundärspule, die mit einem Isoliermantel umgeben ist, ist der Isolierstoff des Isoliermantels durch in der Nähe des Isoliermantels angeordneten Potential führenden Bauteilen zumindest örtlich stark beansprucht. Insbesondere beim Einbau des Stabzündtransformators in einen Zylinderkopf eines Kraftfahrzeugs, der gewöhnlich mit dem Massepotential des Kraftfahrzeugs verbunden ist, ist der Isolierstoff des Isoliermantels zumindest örtlich stark beansprucht. Solche Stabzündtransformatoren sind zum Einbau in der Nähe Potential führender Bauteile nur bedingt geeignet.Furthermore, bar ignition transformers are known in which the secondary coil is arranged on the inside around the transformer core. In these arrangements, the primary coil is arranged externally around the secondary coil, whereby these bar-type ignition transformers are also referred to as external secondary coil-bar transformers. The transformer core is electrically connected to no potential, so that the potential of the transformer core due to a capacitive coupling to a center potential between the ground potential and the generated high voltage potential. In Stabzünd transformers with external secondary coil, which is surrounded by an insulating jacket, the insulating material of the insulating jacket is at least locally heavily stressed by arranged in the vicinity of the insulating potential-carrying components. In particular, when installing the Stabzünd transformer in a cylinder head of a motor vehicle, which is usually connected to the ground potential of the motor vehicle, the insulating material of the insulating jacket is at least locally heavily stressed. Such Stabzündtransformatoren are only partially suitable for installation in the vicinity potential leading components.
Aus dem Dokument
Die bekannten Stabzündtransformatoren haben allgemein den Nachteil, dass die verwendeten Isolierstoffe lokal stark ungleichmäßig belastet werden. Das Isolationsvermögen des Isolierstoffs und die Stärke des Isolierstoffs müssen jedoch entsprechend der maximal auftretenden Belastung ausgelegt werden. Darüber hinaus muss bei einer Schräglagenwicklung der Primärwicklung und/oder der Sekundärwicklung durch konstruktive Maßnahmen das Abrutschen einzelner Drähte verhindert werden. Beim Schräglagenwickeln wird nur ein Teil der Zylinderlage einer Spulenwicklung mit einem Wickeldraht gewickelt, wobei die anschließend auf diese Lage erzeugte weitere Lage nicht bis zum Anfang der ersten Lage zurück gewickelt wird. Die nachfolgend auf die zweite Lage gewickelte dritte Lage hat die gleiche Breite wie die erste Lage, so dass diese versetzt zur ersten Lage angeordnet ist.The known Stabzündtransformatoren generally have the disadvantage that the insulating materials used are heavily loaded locally uneven. However, the insulation capacity of the insulating material and the thickness of the insulating material must be designed according to the maximum load occurring. In addition, in a skew winding of the primary winding and / or the secondary winding by design measures to prevent slippage of individual wires become. When skew winding only a portion of the cylindrical position of a coil winding is wound with a winding wire, which then on this Location produced further layer is not wrapped back to the beginning of the first layer. The subsequently wound on the second layer third layer has the same width as the first layer, so that it is arranged offset from the first layer.
Diese Schräglagenwicklungen werden auch als Pilgerschrittwicklung bezeichnet und sind insbesondere aus Handbüchern zu Wickelmaschinen, z.B. von Wickelmaschinen der Firma Marsilli, beschrieben.These skew windings are also referred to as pilgrim step windings and are particularly useful in manuals for winding machines, e.g. from winding machines of the company Marsilli described.
Aufgabe der Erfindung ist es, einen Stabzündtransformator zur Versorgung eines Zündmittels, insbesondere einer Zündkerze einer Brennkraftmaschine, mit einer Hochspannung anzugeben, bei dem die Belastung des Isoliermaterials zur Isolation der Sekundärspule verringert ist.The object of the invention is to provide a bar ignition transformer for supplying an ignition means, in particular a spark plug of an internal combustion engine, with a high voltage, in which the load of the insulating material for the isolation of the secondary coil is reduced.
Diese Aufgabe wird durch einen Stabzündtransformator mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.This object is achieved by a Stabzündtransformator with the features of claim 1. Advantageous developments of the invention are specified in the dependent claims.
Durch einen Stabzündtransformator zur Versorgung eines Zündmittels, insbesondere einer Zündkerze einer Brennkraftmaschine, mit Hochspannung mit den Merkmalen des Patentanspruchs 1 wird erreicht, dass im Bereich großer Potentialunterschiede eine dickere Isolierstoffschicht zur Verfügung steht als in Bereichen mit geringeren Potentialunterschieden. Dadurch wird der Isolierstoff zur Isolation der Sekundärspule geringer beansprucht als bei herkömmlichen Stabzündtransformatoren. Punktuell starke Belastungen des Isolierstoffs werden vermieden. Diese starken punktuellen Belastungen werden durch große örtliche Potentialunterschiede hervorgerufen, die auch als Hot Spots bezeichnet werden. In Bereichen solcher Hot Spots wird das Isoliermaterial stark beansprucht. Üblicherweise wird die Isolation des gesamten Stabzündtransformators auf diese Hot Spots ausgelegt, so dass in Bereichen mit geringeren Potentialunterschieden mehr Isoliermaterial vorhanden ist als zur Isolation der hochspannungsführenden Bauteile der Stabzündspule notwendig ist. Andererseits wird in den Bereichen der Hot Spots das Isolationsmaterial stark beansprucht, wodurch die Lebensdauer des Isolationsmaterials insbesondere an diesen Hot Spots durch die Beanspruchung reduziert ist.By a Stabzündtransformator for supplying an ignition means, in particular a spark plug of an internal combustion engine, with high voltage with the features of claim 1 ensures that in the range of large potential differences, a thicker insulating material is available than in areas with lower potential differences. As a result, the insulating material for the isolation of the secondary coil is subjected to less stress than conventional Stabzündtransformatoren. Pointy heavy loads of the insulating material are avoided. These strong punctual loads are caused by large local potential differences, which are also referred to as hot spots. In areas of such hot spots, the insulating material is heavily stressed. Typically, the insulation of the entire Stabzündtransformators is designed for these hot spots, so that in areas with lower potential differences more insulating material is present as for the isolation of high-voltage components of the pencil ignition coil is necessary. On the other hand, in the areas of hot spots, the insulation material is heavily stressed, whereby the life of the insulating material especially at these hot spots is reduced by the stress.
Ein zweiter Aspekt der Erfindung betrifft eine Anordnung mit einer kombinierten Zündtransformator- und Zündmitteleinheit, vorzugsweise für eine Brennkraftmaschine, die nach dem Otto-Prinzip arbeitet. Die Anordnung hat ein Zündmittel, das zwischen einer mit Hilfe von Elektroden gebildeten Funkenstrecke und einem Hochspannungsanschluss einen Isolierstoffkörper hat. Der Querschnitt des Isolierstoffkörpers nimmt zumindest im Bereich der Sekundärwicklung des Zündtransformators mit zunehmender Entfernung von den Elektroden des Zündmittels ab. Um den Isolierstoffkörper sind konzentrisch zu dessen Längsachse die Sekundärwicklung und die Primärwicklung des Zündtransformators angeordnet.A second aspect of the invention relates to an arrangement with a combined Zündtransformator- and Zündmitteleinheit, preferably for an internal combustion engine that operates on the Otto principle. The arrangement has an ignition means which has an insulating body between a spark gap formed by means of electrodes and a high voltage terminal. The cross section of the insulating material decreases at least in the region of the secondary winding of the ignition transformer with increasing distance from the electrodes of the ignition means. The secondary winding and the primary winding of the ignition transformer are arranged concentrically to the longitudinal axis of the insulating material.
Durch eine solche Anordnung ist eine kompakte Bauweise des Zündtransformators und der Zündmitteleinheit möglich, wobei der Isolierstoffkörper als Spulenkörper für die Sekundärspule des Zündtransformators dient. Dadurch wird auf einfache Art und Weise eine konische Ausbildung und Anordnung der Sekundärspule des Zündtransformators erreicht. Durch eine geeignete Wahl der mit der Sekundärwicklung, dem Transformatorkern und mit weiteren Elementen der Anordnung verbundenen Potentialen kann durch diese konische Ausbildung der Sekundärspule der Isolationsabstand zwischen Elementen mit großen Potentialunterschieden vergrößert werden.By such an arrangement, a compact construction of the ignition transformer and the Zündmitteleinheit is possible, wherein the insulating body serves as a bobbin for the secondary coil of the ignition transformer. As a result, a conical design and arrangement of the secondary coil of the ignition transformer is achieved in a simple manner. By a suitable choice of the potentials associated with the secondary winding, the transformer core and with other elements of the arrangement, the insulation distance between elements with large potential differences can be increased by this conical design of the secondary coil.
Zum besseren Verständnis der vorliegenden Erfindung wird im Folgenden auf die in den Zeichnungen dargestellten bevorzugten Ausführungsbeispiele Bezug genommen, die an Hand spezifischer Terminologie beschrieben sind. Es wird jedoch darauf hingewiesen, dass der Schutzumfang der Erfindung dadurch nicht eingeschränkt werden soll, da derartige Veränderungen und weitere Modifizierungen an den gezeigten Vorrichtungen sowie derartige weitere Anwendungen der Erfindung, wie sie darin aufgezeigt sind, als übliches derzeitiges oder künftiges Fachwissen eines zuständigen Fachmanns angesehen werden. Die Figuren zeigen Ausführungsbeispiele der Erfindung, nämlich:
- Fig. 1
- einen Ausschnitt eines Längsschnitts eines bekannten Stabzünd- transformators;
- Fig. 2
- einen Ausschnitt eines Längsschnitts eines erfindungsgemäßen Stabzündtransformators;
- Fig. 3
- eine Seitenansicht einer Zündtransformator-/Zündkerzen-Einheit gemäß der vorliegenden Erfindung; und
- Fig. 4
- eine Schnittdarstellung der Zündtransformator-Zündkerzen-Einheit entlang der Schnittlinie A-A nach
Fig. 3 .
- Fig. 1
- a section of a longitudinal section of a known Stabzünd- transformer;
- Fig. 2
- a detail of a longitudinal section of a Stabzündtransformators invention;
- Fig. 3
- a side view of a Zündtransformator- / spark plug unit according to the present invention; and
- Fig. 4
- a sectional view of the Zündtransformator spark plug unit along the section line AA after
Fig. 3 ,
In
In
Der zweite nicht mit dem Massepotential verbundene Anschluss der Primärwicklung 22 ist mit einer elektronischen Steuereinheit 26 verbunden, die eine Leistungsendstufe zum Verbinden und Trennen des mit der Steuereinheit 26 verbundenen Anschlusses der Primärwicklung 22 mit der Versorgungsspannung des Kraftfahrzeugs von beispielsweise 12 Volt Gleichspannung enthält. Am Isolierstoffgehäuse 24 kann ein Rückschlussblech anliegen, das als Rückschlusselement mit dem Stabkern 14 einen Magnetkreis des Stabzündtransformators 10 bildet. Ist der Stabkern 14 ebenfalls mit dem Massepotential verbunden, muss die Sekundärwicklung 16 entsprechend gegenüber dem Stabkern 14 isoliert werden. Vorzugsweise ist der Spulenkörper 18 aus einem Kunststoff hergestellt, durch den die Sekundärwicklung 16 gegenüber dem Stabkern 14 ausreichend isoliert ist. Zusätzlich kann zwischen dem Spulenkörper 18 und dem Stabkern 14 eine Vergussmasse eingefüllt sein. Ferner ist die Sekundärwicklung 16 gegenüber der Primärwicklung 22 durch die zwischen diese Wicklungen 16, 22 gefüllte Vergussmasse elektrisch isoliert. Alternativ oder zusätzlich können die Sekundärwicklung 16, die Primärwicklung 22, der Stabkern 14 und/oder das Gehäuse 24 mit einem thermoplastischen und/oder einem duroplastischen Werkstoff elektrisch isoliert sein. Der thermoplastische oder duroplastische Werkstoff wird vorzugsweise durch ein Spritzverfahren auf das zu isolierende Bauteil 16, 22, 14, 24 aufgebracht. Insbesondere durch eine Schräglagenwicklung und/oder eine Scheibenwicklung kann eine relativ gleichmäßige Potentialverteilung von einem Ende der Sekundärwicklung 16 zum anderen Ende der Sekundärwicklung 16 erreicht werden, wodurch nur in einem Bereich große Potentialunterschiede zwischen dem Stabkern 14 und der Sekundärwicklung 16 und zwischen der Sekundärwicklung 16 und der Primärwicklung 22 auftreten.The second terminal of the primary winding 22, which is not connected to the ground potential, is connected to an
Die Leistungsendstufe der Steuereinheit 26 umfasst einen Hochleistungstransistor, der als Schalter betrieben wird. Solche Hochleistungstransistoren sind insbesondere Bipolartransistoren, MOSFETs und Isolated Gate Bipolar-Transistoren (IGBT). Durch das Einschalten der Zündendstufe, d.h. durch das Verbinden der Primärwicklung mit der Versorgungsspannung des Kraftfahrzeugs, wird durch den dadurch fließenden Primärstrom ein Magnetfluss im Stabkern 14 erzeugt. Durch Ausschalten der Zündendstufe, d.h. durch Trennen der Primärwicklung 22 von der Versorgungsspannung wird der Primärstrom unterbrochen, wodurch eine starke Änderung des durch den Primärstrom erzeugten Magnetfeldes erzeugt wird. Durch diese Änderung des Magnetfeldes wird der magnetische Fluss geändert, wodurch in der Sekundärwicklung 16 eine hohe Spannung induziert wird. Diese Spannung wird dem Hochspannungsanschluss 20 einer ersten Elektrode der Zündkerze zugeführt. Eine weitere mit der ersten Elektrode eine Funkenstrecke bildende zweite Elektrode der Zündkerze ist dauerhaft mit dem Massepotential verbunden. Beim Erreichen einer Durchbruchsspannung wird ein Lichtbogen zwischen den beiden Elektroden erzeugt, der eine Zündung des im Brennraum befindlichen Kraftstoff-Luft-Gemisches bewirkt.The power output stage of the
In
Die Potentialverteilung der Sekundärwicklung 32 vom unteren Ende zum oberen Ende erfolgt im Wesentlichen gleichmäßig über die Länge der Sekundärwicklung 32, so dass am unteren Ende Massepotential anliegt und am oberen Ende Hochspannungspotential. Der Stabkern 14 ist elektrisch leitend mit dem Hochspannungspotential verbunden. Dadurch ist kein Potentialunterschied zwischen dem oberen Ende der Sekundärwicklung 32, an dem die Hochspannung anliegt, und dem mit dem Hochspannungspotential verbundenen Stabkern 14 vorhanden. Am unteren Ende der Sekundärwicklung 32 ist der Potentialunterschied gleich dem Hochspannungspotential des Stabkerns 14, da dieses Ende der Sekundärwicklung 32 auf Massepotential liegt. Durch die schräge Anordnung der Sekundärwicklung 32 ist jedoch ein relativ großer Abstand zwischen der Innenseite der Sekundärwicklung 32 und der Mantelfläche des Stabkerns 14 am unteren Ende der Sekundärwicklung 32 vorhanden, der als Isolationsabstand dient. In diesem lsolationsabstand kann entweder Luft oder ein anderer Isolierstoff, insbesondere ein Isolierstoffharz, vorhanden sein. Auch das Einbringen von Isoliergasen in diesen Zwischenraum ist möglich. Zwischen der der Sekundärwicklung 32 zugewandten Innenseite der Primärwicklung 22 und der der Primärwicklung 22 zugewandten Außenseite der Sekundärwicklung 32 ist im oberen Bereich der Sekundärwicklung 32 ein relativ großer Abstand durch die konische Anordnung der Sekundärwicklung 32 vorhanden, der als Isolationsabstand zwischen der in diesem Bereich Hochspannungspotential führenden Sekundärwicklung 32 und dem Massepotential oder das Versorgungsspannungspotential des Kraftfahrzeugs aufweisenden Potentials der Primärwicklung 22 dient. Durch die schräge Anordnung der Sekundärwicklung 32 wird ein trichterförmiger Spalt zwischen der Sekundärwicklung 32 und der Primärwicklung 22 gebildet. In diesen trichterförmigen Spalt kann auf einfache Art und Weise von der Oberseite des Isolierstoffgehäuses 24 her ein Isolierstoff zwischen die Sekundärwicklung 32 und die Primärwicklung 22 eingefüllt werden. Insbesondere ist das Fließverhalten eines Vergussstoffs bei einem Vakuum-Vergussprozess gegenüber dem Stabzündtransformator 10 durch den trichterförmigen Spalt zwischen der Sekundärwicklung 32 und der Primärwicklung 22 bei dem Stabzündtransformator 30 nach
Durch die in
Die Sekundärwicklung 32 wird als Schräglagenwicklung ausgeführt, wobei mit der Schräglagenwicklung im Bereich mit dem geringsten Innenquerschnitt der Sekundärwicklung 32 begonnen wird, so dass die Wickelrichtung der Schräglagenwicklung entgegen der Konizität der Sekundärwicklung 32 gerichtet ist. Dadurch werden der Konizitätswinkel und der Schräglagenwinkel addiert, wodurch benachbarte Windungen eine geringere Potentialdifferenz zueinander haben als beispielsweise bei Zylinderwicklungen. Die Lackisolation der Wicklungsdrähte ist dadurch nicht so stark beansprucht, wodurch eine längere Lebensdauer der Lackdrahtisolation erreicht wird und die Wahrscheinlichkeit von Windungsschlüssen verringert ist. Ferner wird dadurch ein Abrutschen von Drähten bei der Schräglagenwicklung verhindert.The secondary winding 32 is designed as a skew winding, wherein the skew winding in the region with the smallest inner cross section of the secondary winding 32 is started, so that the winding direction of the skew winding is directed against the conicity of the secondary winding 32. As a result, the Konizitätswinkel and the skew angle are added, whereby adjacent turns have a lower potential difference than, for example, in cylinder windings. The lacquer insulation of the winding wires is thereby not stressed so much, whereby a longer life of the enameled wire insulation is achieved and the probability of Windungsschlüssen is reduced. Furthermore, thereby slipping of wires in the skew winding is prevented.
In
In
Durch ein geeignetes Wickelverfahren, insbesondere durch eine Ringwicklung oder eine Schräglagenwicklung, nimmt das Potential der Sekundärwicklung 58 kontinuierlich von dem unteren Ende der Sekundärwicklung 58 zum oberen Ende der Sekundärwicklung 58 hin zu. Der Transformatorkern 54 ist mit dem Hochspannungspotential der Sekundärwicklung 58 elektrisch verbunden. Dadurch ist im unteren Bereich des Transformatorkerns 54 bzw. der Sekundärwicklung 58 durch die Form des lsolierstoffkörpers 56 ein relativ großer Isolierabstand vorhanden und im oberen Bereich der Sekundärwicklung 58 ein relativ geringer Isolierabstand. Dadurch ist im Bereich großer Potentialdifferenzen zwischen Transformatorkern 54 und Sekundärwicklung 58 ein großer Isolierabstand und im Bereich geringer oder keiner Potentialunterschiede zwischen dem Transformatorkern 54 und der Sekundärwicklung 58 ein geringer Isolationsabstand vorhanden. Die Primärwicklung 52 hat gleichstrommäßig betrachtet Massepotential bzw. Versorgungsspannungspotential des Kraftfahrzeugs, so dass im oberen Bereich der Sekundärwicklung 58 eine große Potentialdifferenz zwischen Primärwicklung 52 und Sekundärwicklung 58 und im unteren Bereich der Sekundärwicklung 58 eine geringe Potentialdifferenz zwischen der Sekundärwicklung 58 und der Primärwicklung 52 auftritt. Im oberen Bereich der Sekundärwicklung 58, wie bereits erwähnt, ist ein relativ großer Isolationsabstand zwischen der Sekundärwicklung 58 und der Primärwicklung 52, und im unteren Bereich der Sekundärwicklung 58 ist ein relativ geringer Isolationsabstand zwischen der Sekundärwicklung 58 und der Primärwicklung 52 vorhanden. Durch diese unterschiedlichen Isolationsabstände wird ein keilförmiger Zwischenraum 60 zwischen der Primärwicklung 52 und der Sekundärwicklung 58 erzeugt, indem, wie bereits im Zusammenhang mit
Obgleich in den Zeichnungen und in der vorhergehenden Beschreibung bevorzugte Ausführungsbeispiele aufgezeigt und detailliert beschrieben worden sind, sollte sie lediglich als rein beispielhaft und die Erfindung nicht einschränkend angesehen werden. Es wird darauf hingewiesen, dass nur die bevorzugten Ausführungsbeispiele dargestellt und beschrieben sind und sämtliche Veränderungen und Modifizierungen, die derzeit und künftig im Schutzumfang der Erfindung liegen, geschützt werden sollen.Although in the drawings and in the foregoing description preferred embodiments have been shown and described in detail, it should be considered as illustrative only and not restrictive of the invention. It should be understood that only the preferred embodiments are shown and described and all changes and modifications that are presently and in the future within the scope of the invention should be protected.
- 10,3010.30
- Stabzündtransformatorrod ignition
- 1111
- Längsachselongitudinal axis
- 1212
- Öffnungopening
- 1414
- Stabkernrod core
- 1616
- Sekundärwicklungsecondary winding
- 1818
- Spulenkörperbobbins
- 2020
- HochspannungsanschlussHigh voltage connection
- 2222
- Primärwicklungprimary
- 2424
- IsolierstoffgehäuseInsulated
- 2626
- Steuereinheitcontrol unit
- 3232
- Sekundärwicklungsecondary winding
- 4040
- Stabtransformator-Zündkerzen-KombinationStaff transformer spark plug combination
- 4242
- Außengewindeexternal thread
- 4444
- HochspannungselektrodeHigh-voltage electrode
- 4646
- Gegenelektrodecounter electrode
- 4848
- IsolierstoffgehäuseInsulated
- 5050
- sechskantförmiger Eingriffsbereichhexagonal engagement area
- 5252
- Primärwicklungprimary
- 5454
- Transformatorkerntransformer core
- 5656
- Isolierstoffkörperinsulating
- 5858
- Sekundärwicklungsecondary winding
Claims (14)
- Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage, wherein a first inner winding (32) and a second outer winding (22) are arranged around a main core zone (14) of a transformer core, concentrically with the longitudinal axis (11) of the rod ignition transformer (30), wherein one of the windings is a primary winding (22), and the other winding is a secondary winding (32),
wherein the distance between the lateral surface of the main core zone (14) and the secondary winding (32) at a first extremity of the secondary winding (32) is smaller than the distance between the lateral surface of the main core zone (14) and the secondary winding (32) at the second extremity of the secondary winding (32) and/or that the distance between the lateral surface of the main core zone (14) and the secondary winding (32) at a first extremity of the transformer core is smaller than the distance between the lateral surface of the main core zone (14) and the secondary winding (32) at the second extremity of the main core zone (14), and
wherein at least the secondary winding (32) is realized as oblique-layer winding,
characterized in that
the oblique layers of the secondary winding (32) are wound in a direction opposite to the inclination of a frustoconical inner surface of the secondary winding (32), the oblique winding starting in the zone with the smallest internal cross section of the secondary winding (32). - Rod ignition transformer according to claim 1, characterized in that at least the secondary winding (32) is wound such that the potential in the secondary winding (32) increases substantially constantly from one axial extremity of the secondary winding (32) toward the other axial extremity of the secondary winding (32).
- Rod ignition transformer according to claim 1 or 2, characterized in that a reference potential is applied at the first extremity of the secondary winding (32) and a high-voltage potential, required for generating an ignition voltage, is at least temporarily applied at the second extremity of the secondary winding (32), wherein the main zone (14) of the transformer core is electrically connected to the high voltage potential.
- Rod ignition transformer according to any one of the preceding claims, characterized in that the main core zone (14) of the transformer core has a cylindrical lateral surface, and that the windings (22, 22) are arranged around the longitudinal axis (11) of the main core zone (14) on concentric circles, the transformer core preferably being an iron core.
- Rod ignition transformer according to any one of the preceding claims, characterized in that the first winding is the secondary winding (32) and that the second winding is the primary winding (22), wherein the distance between the secondary winding (32) and the primary winding (22) at the second extremity of the secondary winding (32) is smaller than the distance between the secondary winding (32) and the primary winding (22) at the first extremity of the secondary winding (32), and/or wherein the distance between the secondary winding (32) and the primary winding (22) at a second extremity of the primary winding (22) is smaller than the distance between the secondary winding (32) and the primary winding (22) at the first extremity of the primary winding (22).
- Rod ignition transformer according to any one of the preceding claims, characterized in that the rod ignition transformer (30) has a casing (24) which is at least within the zone of the primary winding (22) and the secondary winding (32) substantially concentrically arranged around them, wherein the distance between the secondary winding (32) and the lateral surface of the casing (24) at the second extremity of the secondary winding (32) is smaller than the distance between the secondary winding (32) and the lateral surface of the casing (24) at the first extremity of the secondary winding (32).
- Rod ignition transformer according to any one of the preceding claims, characterized in that an insulating body (56) of a spark plug is arranged inside the secondary winding (32), and that the insulating body (56) has a substantially frusto-conical lateral surface at least within the zone of the secondary winding (32), the insulating body (56) preferably being a ceramic body or a porcelain body.
- Rod ignition transformer according to claim 7, characterized in that the insulating body (56) constitutes a coil body for the secondary winding (32).
- Assembly with a combined unit of ignition transformer and ignition means, preferably for an internal combustion engine,
comprising an ignition means which has an insulating body between a sparking distance formed by means of electrodes (44, 46) and a high-voltage terminal,
wherein the cross section of the insulating body (56) is reduced, at least within the zone of a secondary winding (58) of the ignition transformer, toward the high-voltage terminal with increasing distance from the electrodes (44, 46) of the ignition means,
wherein the secondary winding (58) and the primary winding (52) of the ignition transformer are arranged around the insulating body, concentrically with the longitudinal axis thereof, and
wherein at least the secondary winding (58) is realized as an oblique-layer winding,
characterized in that the oblique layers of the secondary winding (58) are wound in a direction opposite to the inclination of a frusto-conical inner surface of the secondary winding (58), the oblique winding starting in the zone having the smallest internal cross section of the secondary winding (32). - Assembly according to claim 9, characterized in that the insulating body (56) constitutes a coil body for the secondary winding (58).
- Assembly according to claim 9 or 10, characterized in that a soft-magnetic transformer core (14) is provided inside the insulating body (56), the insulating body (56) preferably being a ceramic body or a porcelain body.
- Assembly according to any one of claims 9 to 11, characterized in that at least within one zone a magnetic jacket (body jacket) is arranged around the primary winding and the secondary winding, that is preferably integrated into a casing of the assembly.
- Assembly according to claim 12, characterized in that at least part of the force required for screwing the assembly into an opening provided in the cylinder head of an internal combustion engine is transmitted through the jacket.
- Assembly according to claim 12 or 13, characterized in that the magnetic jacket forms a magnetic circle together with a transformer core of the ignition transformer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005043336A DE102005043336A1 (en) | 2005-09-12 | 2005-09-12 | Bar ignition transformer for supplying an ignition means, in particular a spark plug of an internal combustion engine, with a high voltage |
PCT/EP2006/066281 WO2007031518A1 (en) | 2005-09-12 | 2006-09-12 | Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1929490A1 EP1929490A1 (en) | 2008-06-11 |
EP1929490B1 true EP1929490B1 (en) | 2010-01-20 |
Family
ID=37401128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06778426A Not-in-force EP1929490B1 (en) | 2005-09-12 | 2006-09-12 | Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1929490B1 (en) |
JP (1) | JP2009508345A (en) |
CN (1) | CN101305431B (en) |
AT (1) | ATE456141T1 (en) |
DE (2) | DE102005043336A1 (en) |
HK (1) | HK1124955A1 (en) |
WO (1) | WO2007031518A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HRP20070002A9 (en) * | 2007-01-02 | 2008-02-29 | Anđelić Ilija | Eco fuel saver for vehicle |
CN101943099B (en) * | 2010-08-11 | 2013-03-13 | 联合汽车电子有限公司 | Engine ignition coil and primary winding thereof |
DE102012025082B3 (en) * | 2012-08-31 | 2014-01-16 | NorthCo Ventures GmbH & Co. KG | Device for treatment of biological tissue with low pressure plasma, has transformer for generating high-frequency electromagnetic field and probe electrically coupled with transformer |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS55108730A (en) * | 1979-02-13 | 1980-08-21 | Fujitsu Ltd | Method of manufacturing wireewound type condenser element |
JPH0684021B2 (en) * | 1987-11-04 | 1994-10-26 | 株式会社アイジー技術研究所 | Composite board manufacturing equipment |
US4903674A (en) * | 1989-03-13 | 1990-02-27 | General Motors Corporation | Spark developing apparatus for internal combustion engines |
FR2719941B1 (en) * | 1994-05-10 | 1996-07-05 | Sagem Allumage | Ignition coil intended to be mounted on a spark plug for the individual electrical supply of this spark plug. |
EP0762445B1 (en) * | 1995-08-25 | 2000-07-26 | Denso Corporation | Slant winding electromagnetic coil and ignition coil for internal combustion engine using same |
JPH09289123A (en) * | 1996-04-19 | 1997-11-04 | Matsushita Electric Ind Co Ltd | Ignition coil device for internal combustion engine |
JP3752744B2 (en) * | 1996-08-31 | 2006-03-08 | 東洋電装株式会社 | Engine ignition coil device |
JPH10112414A (en) * | 1996-10-04 | 1998-04-28 | Diamond Electric Mfg Co Ltd | Ignition coil |
US5706792A (en) * | 1996-12-10 | 1998-01-13 | General Motors Corporation | Integrated ignition coil and spark plug |
FR2762442B1 (en) * | 1997-04-17 | 1999-07-09 | Electricfil | IGNITION COIL FOR THE SUPPLY OF A THERMAL ENGINE SPARK PLUG |
DE29801363U1 (en) * | 1998-01-28 | 1998-03-12 | Vogt Electronic Ag | ignition coil |
DE29901089U1 (en) * | 1998-07-21 | 1999-06-24 | Bremicker Auto Elektrik | Electric pencil ignition coil |
DE19912376C2 (en) * | 1999-03-19 | 2003-10-23 | Bremi Auto Elek K Ernst Bremic | Ionenstrommeßgerät |
JP3627594B2 (en) * | 1999-10-20 | 2005-03-09 | 株式会社日立製作所 | Ignition coil |
DE20012401U1 (en) * | 2000-07-18 | 2001-11-29 | Bosch Gmbh Robert | Rod coil for ignition systems |
DE10152177A1 (en) * | 2001-10-23 | 2003-04-30 | Bosch Gmbh Robert | Rod coil for ignition systems |
JP2003297655A (en) * | 2002-04-01 | 2003-10-17 | Denso Corp | Internal combustion engine igniter |
JP4019766B2 (en) * | 2002-04-01 | 2007-12-12 | 株式会社デンソー | Ignition device for internal combustion engine and method of assembling the same |
DE10256802B3 (en) * | 2002-12-05 | 2004-04-15 | Robert Bosch Gmbh | Rod ignition coil for automobile IC engine has first coil body, its coil winding and associated resin mass acting as second coil body for second coil winding |
DE10360338A1 (en) * | 2003-12-20 | 2005-07-14 | Robert Bosch Gmbh | Ignition coil for a gasoline engine and method for its production |
DE102004003216B3 (en) * | 2004-01-22 | 2005-08-25 | Era Ag | Ignition coil for an internal combustion engine |
-
2005
- 2005-09-12 DE DE102005043336A patent/DE102005043336A1/en not_active Withdrawn
-
2006
- 2006-09-12 AT AT06778426T patent/ATE456141T1/en active
- 2006-09-12 WO PCT/EP2006/066281 patent/WO2007031518A1/en active Application Filing
- 2006-09-12 EP EP06778426A patent/EP1929490B1/en not_active Not-in-force
- 2006-09-12 CN CN2006800414848A patent/CN101305431B/en not_active Expired - Fee Related
- 2006-09-12 DE DE502006005995T patent/DE502006005995D1/en active Active
- 2006-09-12 JP JP2008530505A patent/JP2009508345A/en active Pending
-
2009
- 2009-03-30 HK HK09102976.5A patent/HK1124955A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE502006005995D1 (en) | 2010-03-11 |
CN101305431A (en) | 2008-11-12 |
ATE456141T1 (en) | 2010-02-15 |
HK1124955A1 (en) | 2009-07-24 |
DE102005043336A1 (en) | 2007-03-15 |
CN101305431B (en) | 2010-10-27 |
WO2007031518A1 (en) | 2007-03-22 |
EP1929490A1 (en) | 2008-06-11 |
JP2009508345A (en) | 2009-02-26 |
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