EP0248717A1 - Electromagnetic bobbin and ignition device for an internal-combustion engine comprising such a bobbin - Google Patents
Electromagnetic bobbin and ignition device for an internal-combustion engine comprising such a bobbin Download PDFInfo
- Publication number
- EP0248717A1 EP0248717A1 EP87401203A EP87401203A EP0248717A1 EP 0248717 A1 EP0248717 A1 EP 0248717A1 EP 87401203 A EP87401203 A EP 87401203A EP 87401203 A EP87401203 A EP 87401203A EP 0248717 A1 EP0248717 A1 EP 0248717A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- spark plug
- central electrode
- bobbin
- secondary winding
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 20
- 239000003989 dielectric material Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- 238000005470 impregnation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- 239000013043 chemical agent Substances 0.000 claims description 6
- 240000007817 Olea europaea Species 0.000 claims description 5
- 238000010292 electrical insulation Methods 0.000 claims description 3
- 239000000615 nonconductor Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
-
- 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
- H01T13/40—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 new embodiment of an electromagnetic coil and its particular use in an ignition device for an internal combustion engine.
- An ignition coil is an inductive accumulator that stores ignition energy for transmission to the ignition circuit in an internal combustion engine. Generally, it consists of a primary winding and a secondary winding wound on one another and comprising a common iron core which reinforces the magnetic flux. The high voltage of the ignition coil is conducted by the ignition cable and is distributed to each of the spark plugs, via the igniter.
- the present invention relates to this type of ignition device, for which the coil does not have a soft iron core, thus achieving a saving in weight and is produced in such a way that it withstands high temperatures and resists vibration. thanks to the materials that compose it.
- the invention therefore relates firstly to an electromagnetic coil characterized in that it comprises: - a hollow winding mandrel made of dielectric material having good resistance to high temperatures and to chemical agents, around which the primary and secondary windings are wound, the output wire of the secondary circuit leaving the coil through a cavity dug in the mandrel along its longitudinal axis; means of electrical insulation between the different layers of turns, produced from sheets of flexible dielectric synthetic material with a high coefficient of electrical rigidity and good resistance to heat and from a low viscosity impregnation resin and with good adhesion to said sheets of flexible material.
- the invention relates to an ignition device for an internal combustion engine comprising a coil associated with each spark plug, characterized in that it comprises: - a cylindrical housing of dielectric material having good resistance to heat and to chemical agents, in which is housed on the one hand a coil of the type mentioned above and on the other hand the part of the spark plug constituted by the surrounding electrical insulator the central electrode, - And coil-spark plug interface means ensuring electrical continuity between the secondary winding of the coil and the central electrode of the spark plug.
- the figure shows a view along a longitudinal couple of an ignition device according to the invention, comprising a spark plug 1 and a coil 2 associated in the same housing 3, placed on an engine of a motor vehicle, in the conduit of spark plug 4, the spark plug 1 being traditionally screwed into the cylinder head 5 of the engine.
- the electromagnetic coil 2 comprises a hollow winding mandrel 6, made of dielectric material, resistant well to high temperatures, close to 200 ° C. and to chemical agents.
- this coil can be associated with a spark plug for a motor vehicle it must be able to remain unalterable whatever the climatic environment of the vehicle, that is to say resist thermal shocks, humidity, salt or oil sprayed into the engine.
- this mandrel 6 having a cavity 7 hollowed out along its longitudinal axis ⁇ is wound first the secondary winding then the primary winding, each layer of turns being separated from the next by a layer of flexible dielectric synthetic material, Kapton for example, with a high coefficient of electrical rigidity and good heat resistance.
- a layer of flexible dielectric synthetic material Kapton for example
- the electrical insulation between the layers of turns is provided by an impregnation resin with low viscosity and good adhesion to the sheets of said flexible material.
- This resin is advantageously a silicone resin, which has the following qualities: unalterable over time and whatever the ambient temperature, excellent dielectric and hydrophobic.
- the output wire 8 of the secondary winding which is intended to conduct the high voltage created by the coil 2 to the spark plug 1 which is associated with it.
- This coil 2 of small dimensions (about 5 cm high by 3 cm in diameter) is associated with a candle 1, both housed in a housing 3 made of dielectric material, resistant both to high temperatures and to chemical attack - it can be the same material as the spool mandrel -. To obtain maximum energy from the spark plug, the coil must have a low secondary impedance.
- the coil according to the invention allows to realize thanks to its small dimensions. Indeed the section of the wire primary winding is chosen relatively large while its length is relatively short, so as to reduce the number of turns of the primary winding.
- the housing 3 is cylindrical, with two sections for example; the part in which the coil 2 is completely housed has a diameter slightly greater than the part in which the spark plug 1 is partially housed. Only the part of the spark plug 1 comprising the electrical insulator - generally made of ceramic - surrounding the central electrode is housed in the housing 3. To provide electrical continuity between the coil 2 and the spark plug 1, there are interface means 10 intended moreover to thermally protect the coil of the spark plug, the temperature of which during operation can reach 180 ° C.
- interface means 10 are constituted, for example, by an olive cover 11 made of conductive material, metal for example, screwed on the threaded cap, or olive 9, which covers the upper end of the connection rod which is itself connected to the central electrode of the spark plug 1 and comprising a conductive spring 12 intended to come into contact with the wire secondary output from coil 2.
- a conductive rubber pad 13 can be placed inside the olive cover at the top of the spark plug connection rod 1.
- the top of the dielectric casing 3 for protecting the coil-spark plug assembly is closed by a dielectric plug 14 allowing the supply wire 15 to pass from the primary winding of the coil 2, connected to the ignition control circuit.
- the coil-spark plug assembly thus being formed in the housing, the spark plug 1 is screwed conventionally by its base 16 into the cylinder head 5 of the engine.
- the invention makes it possible to obtain a saving in weight and space compared to the prior devices, since the ignition device is compact, without iron core for the coil, and good resistance to temperature, vibration and good resistance to chemical agents thanks to the insulating materials used.
- the energy delivered by the ignition coil is directly used by the spark plug, without losses in wiring.
- the frequency of the coil produced according to the invention is greater than that of a coil with an inductive core (soft iron), the time for the voltage to rise across the terminals of l the secondary winding is shorter so that the spark between the two electrodes of the spark plug bursts in a rotating fashion around the central electrode, without carbon deposition along a particular path; the candle self-cleans.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
Description
L'invention concerne un nouveau mode de réalisation d'une bobine électromagnétique et son utilisation particulière dans un dispositif d'allumage pour moteur à combustion interne.The invention relates to a new embodiment of an electromagnetic coil and its particular use in an ignition device for an internal combustion engine.
Une bobine d'allumage est un accumulateur inductif qui emmagasine l'énergie d'allumage pour la transmettre au circuit d'allumage dans un moteur à combustion interne. Généralement, elle est constituée d'un enroulement primaire et d'un enroulement secondaire bobinés l'un sur l'autre et comportant un noyau de fer commun qui renforce le flux magnétique. La haute tension de la bobine d'allumage est conduite par le câble d'allumage et est distribuée à chacune des bougies, par l'intermédiaire de l'allumeur.An ignition coil is an inductive accumulator that stores ignition energy for transmission to the ignition circuit in an internal combustion engine. Generally, it consists of a primary winding and a secondary winding wound on one another and comprising a common iron core which reinforces the magnetic flux. The high voltage of the ignition coil is conducted by the ignition cable and is distributed to each of the spark plugs, via the igniter.
Pour supprimer le parasitage par rayonnement électromagnétique dans le câble, et pour diminuer la complexité du montage de l'ensemble du circuit d'allumage, il existe des dispositifs d'allumage comportant une bobine par bougie d'allumage. La présente invention se rapporte à ce type de dispositif d'allumage, pour lequel la bobine ne possède pas de noyau en fer doux, réalisant ainsi un gain de poids et est réalisée de telle sorte qu'elle supporte des températures élevées et résiste aux vibrations grâce aux matériaux qui la composent.To suppress interference by electromagnetic radiation in the cable, and to reduce the complexity of mounting the entire ignition circuit, there are ignition devices comprising one coil per spark plug. The present invention relates to this type of ignition device, for which the coil does not have a soft iron core, thus achieving a saving in weight and is produced in such a way that it withstands high temperatures and resists vibration. thanks to the materials that compose it.
L'invention concerne donc en premier lieu une bobine électromagnétique caractérisée par le fait qu'elle comprend:
- un mandrin creux de bobinage en matériau diélectrique ayant une bonne résistance aux températures élevées et aux agents chimiques, autour duquel sont bobinés les enroulements primaire et secondaire, le fil de sortie du circuit secondaire sortant de la bobine à travers une cavité creusée dans le mandrin suivant son axe longitudinal;
- des moyens d'isolation électrique entre les différentes couches de spires, réalisés à partir des feuilles de matériau synthétique diélectrique souple à fort coefficient de rigidité électrique et à bonne résistance à la chaleur et à partir d'une résine d'imprégnation à faible viscosité et à bonne adhérence sur lesdites feuilles de matériau souple.The invention therefore relates firstly to an electromagnetic coil characterized in that it comprises:
- a hollow winding mandrel made of dielectric material having good resistance to high temperatures and to chemical agents, around which the primary and secondary windings are wound, the output wire of the secondary circuit leaving the coil through a cavity dug in the mandrel along its longitudinal axis;
means of electrical insulation between the different layers of turns, produced from sheets of flexible dielectric synthetic material with a high coefficient of electrical rigidity and good resistance to heat and from a low viscosity impregnation resin and with good adhesion to said sheets of flexible material.
En second lieu l'invention concerne un dispositif d'allumage pour moteur à combustion interne comportant une bobine associée à chaque bougie, caractérisé en ce qu'il comporte:
- un boîtier cylindrique en matériau diélectrique ayant une bonne résistance à la chaleur et aux agents chimiques, dans lequel est logée d'une part une bobine du type mentionné précédemment et d'autre part la partie de la bougie constituée par l'isolateur électrique entourant l'électrode central,
- et des moyens d'interface bobine-bougie assurant la continuité électrique entre l'enroulement secondaire de la bobine et l'électrode centrale de la bougie.Secondly, the invention relates to an ignition device for an internal combustion engine comprising a coil associated with each spark plug, characterized in that it comprises:
- a cylindrical housing of dielectric material having good resistance to heat and to chemical agents, in which is housed on the one hand a coil of the type mentioned above and on the other hand the part of the spark plug constituted by the surrounding electrical insulator the central electrode,
- And coil-spark plug interface means ensuring electrical continuity between the secondary winding of the coil and the central electrode of the spark plug.
D'autres caractéristiques et avantages de l'invention apparaîtront dans la description qui suit de l'exemple de réalisation non limitatif, illustrée par la figure unique.Other characteristics and advantages of the invention will appear in the following description of the nonlimiting exemplary embodiment, illustrated by the single figure.
La figure représente une vue selon une couple longitudinale d'un dispositif d'allumage selon l'invention, comportant une bougie 1 et une bobine 2 associée dans un même boîtier 3, placé sur un moteur d'un véhicule automobile, dans le conduit de bougie 4, la bougie 1 étant vissée traditionnellement dans la culasse 5 du moteur.The figure shows a view along a longitudinal couple of an ignition device according to the invention, comprising a spark plug 1 and a
Concernant tout d'abord la bobine électromagnétique 2 réalisée selon l'invention, elle comprend un mandrin 6 creux de bobinage, réalisé en matériau diélectrique, résistant bien à des températures élevées, voisines de 200° C et aux agents chimiques. En effet, cette bobine pouvant être associée à une bougie d'allumage pour véhicule automobile elle doit pouvoir rester inaltérable quelque soit l'environnement climatique du véhicule, c'est-à-dire résister aux chocs thermiques, à l'humidité, au sel ou à l'huile projetée dans le moteur.First of all concerning the
Autour de ce mandrin 6 présentant une cavité 7 creusée suivant son axe longitudinal Δ est bobiné tout d'abord l'enroulement secondaire puis l'enroulement primaire, chaque couche de spires étant séparée de la suivante par une couche de matériau synthétique souple diélectrique, du Kapton par exemple, présentant un fort coefficient de rigidité électrique et une bonne résistance à la chaleur. En plus de ce matériau souple, l'isolation électrique entre les couches de spires est assurée par une résine d'imprégnation à faible viscosité et à bonne adhérence sur les feuilles dudit matériau souple. Cette résine est avantageusement une résine silicone, qui présente les qualités suivantes: inaltérabilité dans le temps et quelque soit la température ambiante, excellent diélectrique et hydrophobe.Around this mandrel 6 having a cavity 7 hollowed out along its longitudinal axis Δ is wound first the secondary winding then the primary winding, each layer of turns being separated from the next by a layer of flexible dielectric synthetic material, Kapton for example, with a high coefficient of electrical rigidity and good heat resistance. In addition to this flexible material, the electrical insulation between the layers of turns is provided by an impregnation resin with low viscosity and good adhesion to the sheets of said flexible material. This resin is advantageously a silicone resin, which has the following qualities: unalterable over time and whatever the ambient temperature, excellent dielectric and hydrophobic.
Dans la cavité 7 creusée dans le matériau 6 est enfilé le fil de sortie 8 de l'enroulement secondaire qui est destiné à conduire la haute tension créée par la bobine 2 vers la bougie 1 d'allumage qui lui est associée.In the cavity 7 dug in the material 6 is threaded the output wire 8 of the secondary winding which is intended to conduct the high voltage created by the
Afin de ne pas échauffer inutilement la bobine, on évite une grande dissipation par effet Joule en réduisant notablement la résistance du bobinage secondaire.In order not to heat the coil unnecessarily, a large dissipation by the Joule effect is avoided by notably reducing the resistance of the secondary winding.
Cette bobine 2, de faibles dimensions (environ 5 cm de hauteur sur 3 cm de diamètre) est associée à une bougie 1, logée toutes les deux dans un boîtier 3 réalisé en matériau diélectrique, résistant à la fois aux températures élevées et aux agressions chimiques - ce peut être le même matériau que le mandrin de la bobine -. Pour obtenir un maximum d'énergie dans l'étincelle de la bougie, il faut que la bobine présente une impédance secondaire faible. La bobine selon l'invention permet de réaliser grâce à ses faibles dimensions. En effet la section du fil de d'enroulement primaire est choisie relativement grande tandis que sa longueur est relativement faible, de façon à réduire le nombre de spires de l'enroulement primaire.This
Le boîtier 3 est cylindrique, à deux sections par exemple; la partie dans laquelle est logée totalement la bobine 2 a un diamètre légèrement supérieur à la partie dans laquelle est logée partiellement la bougie 1 d'allumage. Seule la partie de la bougie 1 comportant l'isolateur électrique - en céramique généralement - entourant l'électrode centrale est logée dans le boîtier 3. Pour assurer la continuité électrique entre la bobine 2 et la bougie 1, on dispose des moyens d'interface 10 destinés de plus à protéger thermiquement la bobine de la bougie dont la température en cours de fonctionnement peut atteindre 180° C. Ces moyens d'interface 10 sont constitués par exemple par un couvre-olive 11 en matériau conducteur, du métal par exemple, vissé sur le capuchon fileté, ou olive 9, qui recouvre l'extrémité supérieure de la tige de connexion qui est elle-même reliée à l'électrode centrale de la bougie 1 et comportant un ressort conducteur 12 destiné à entrer en contact avec le fil de sortie du secondaire de la bobine 2.The housing 3 is cylindrical, with two sections for example; the part in which the
Pour améliorer encore la continuité électrique entre bobine et bougie, on peut placer une pastille de caoutchouc conducteur 13 à l'intérieur du couvre-olive au sommet de la tige de connexion de la bougie 1.To further improve the electrical continuity between coil and spark plug, a
Le sommet du boîtier diélectrique 3 de protection de l'ensemble bobine-bougie est fermé par un bouchon 14 diélectrique laissant passer le fil d'alimentation 15 de l'enroulement primaire de la bobine 2, connecté au circuit de commande de l'allumage. L'ensemble bobine-bougie étant ainsi constitué dans le boîtier, la bougie 1 est vissée tradionnellement par son culot 16 dans la culasse 5 du moteur.The top of the dielectric casing 3 for protecting the coil-spark plug assembly is closed by a dielectric plug 14 allowing the supply wire 15 to pass from the primary winding of the
Ainsi l'invention permet d'obtenir un gain de poids et de place par rapport aux dispositifs antérieurs, puisque le dispositif d'allumage est compact, sans noyau de fer pour la bobine, et une bonne tenue en température, en vibrations et une bonne résistance aux agents chimiques grâce aux matériaux isolants utilisés. De plus l'énergie délivrée par la bobine d'allumage est directement utilisée par la bougie, sans pertes dans un câblage. Enfin, il existe un autre avantage très important: étant donné que la fréquence de la bobine réalisée selon l'invention est supérieure à celle d'une bobine à noyau inductif (fer doux), le temps de montée de la tension aux bornes de l'enroulement secondaire est plus court de sorte que l'étincelle entre les deux électrodes de la bougie d'allumage éclate de façon tournante autour de l'électrode centrale, sans dépôt de carbone le long d'un chemin particulier; la bougie s'auto-nettoie.Thus the invention makes it possible to obtain a saving in weight and space compared to the prior devices, since the ignition device is compact, without iron core for the coil, and good resistance to temperature, vibration and good resistance to chemical agents thanks to the insulating materials used. In addition, the energy delivered by the ignition coil is directly used by the spark plug, without losses in wiring. Finally, there is another very important advantage: given that the frequency of the coil produced according to the invention is greater than that of a coil with an inductive core (soft iron), the time for the voltage to rise across the terminals of l the secondary winding is shorter so that the spark between the two electrodes of the spark plug bursts in a rotating fashion around the central electrode, without carbon deposition along a particular path; the candle self-cleans.
L'invention comprend tous les équivalents techniques des moyens décrits, leurs combinaisons étant effectuées suivant l'esprit de l'invention et mises en oeuvre dans le cadre des revendications qui suivent.The invention includes all the technical equivalents of the means described, their combinations being carried out according to the spirit of the invention and implemented in the context of the claims which follow.
Claims (4)
- un mandrin (6) creux de bobinage en matériau diélectrique ayant une bonne résistance aux températures élevées et aux agents chimiques, autour duquel sont bobinés les enroulements primaire et secondaire, le fil de sortie (8) de l'enroulement secondaire sortant de la bobine (2) à travers une cavité (7) creusée dans le mandrin (6) suivant son axe longitudinal (Δ),
- des moyens d'isolation électrique entre les différentes couches de spires, réalisées à partir de feuilles de matériau synthétique diélectrique souple à fort coefficient de rigidité électrique et à bonne résistance à la chaleur et à partir d'une résine d'imprégnation à faible viscosité et à bonne adhérence sur lesdites feuilles de matériau souple.1. Electromagnetic coil, characterized in that it comprises:
- a hollow winding mandrel (6) made of dielectric material having good resistance to high temperatures and to chemical agents, around which the primary and secondary windings are wound, the output wire (8) of the secondary winding leaving the coil (2) through a cavity (7) hollowed out in the mandrel (6) along its longitudinal axis (Δ),
- means of electrical insulation between the different layers of turns, produced from sheets of flexible dielectric synthetic material with a high coefficient of electrical rigidity and good heat resistance and from a low viscosity impregnation resin and with good adhesion to said sheets of flexible material.
- un boîtier cylindrique (3) en matériau diélectrique ayant une bonne résistance à la chaleur et aux agents chimiques, dans lequel est logée d'une part une bobine (2) selon la revendication 1, et d'autre part la partie de la bougie (1) constituée par l'isolateur électrique entourant l'électrode centrale,
- et des moyens d'interface (10) bobine-bougie assurant la continuité électrique entre l'enroulement secondaire de la bobine (2) et l'électrode centrale de la bougie (1).2. An ignition device for an internal combustion engine comprising a coil (2) associated with each spark plug (1), characterized in that it comprises:
- a cylindrical housing (3) of dielectric material having good resistance to heat and to chemical agents, in which is housed on the one hand a coil (2) according to claim 1, and on the other hand the part of the spark plug (1) constituted by the electrical insulator surrounding the central electrode,
- And interface means (10) coil-spark plug ensuring electrical continuity between the secondary winding of the coil (2) and the central electrode of the spark plug (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8607938A FR2599431B1 (en) | 1986-06-03 | 1986-06-03 | ELECTROMAGNETIC COIL AND IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE COMPRISING SUCH A COIL. |
FR8607938 | 1986-06-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0248717A1 true EP0248717A1 (en) | 1987-12-09 |
EP0248717B1 EP0248717B1 (en) | 1991-01-23 |
Family
ID=9335920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870401203 Expired - Lifetime EP0248717B1 (en) | 1986-06-03 | 1987-05-27 | Electromagnetic bobbin and ignition device for an internal-combustion engine comprising such a bobbin |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0248717B1 (en) |
DE (1) | DE3767570D1 (en) |
FR (1) | FR2599431B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0344387A1 (en) * | 1988-05-31 | 1989-12-06 | Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE | Ignition unit comprising a combined spark plug and transformer for a cylinder of a thermal engine with spark ignition |
FR2661216A1 (en) * | 1990-04-23 | 1991-10-25 | Electricfil Ind Sarl | INTEGRATED INDIVIDUAL IGNITION COIL OF INTERNAL COMBUSTION ENGINE THERMAL MOTOR CANDLE AND CONTROL IGNITION. |
WO1992010672A1 (en) * | 1990-12-10 | 1992-06-25 | Caterpillar Inc. | Engine ignition system including a transformer assembly and positioning means therefor |
WO1997036354A1 (en) * | 1996-03-22 | 1997-10-02 | Florian Virchow | Sparking plug connector for an internal combustion engine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3920080C2 (en) * | 1989-06-20 | 1994-08-04 | Audi Ag | Ignition device for an internal combustion engine |
DE4117182C1 (en) * | 1991-05-25 | 1992-06-25 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Forming ignition coil mounting for IC engine - fixing laminated core on cylinder head cover so that lower part penetrates latter and protecting from heat radiated by engine by plastics material shell |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2467725A (en) * | 1947-08-28 | 1949-04-19 | Westinghouse Electric Corp | Ignition system |
GB867060A (en) * | 1959-05-22 | 1961-05-03 | Wipac Dev Ltd | Improvements in and relating to transformers |
WO1985000930A1 (en) * | 1983-08-05 | 1985-02-28 | Saab-Scania Aktiebolag | Ignition unit in the ignition system of an internal combustion engine |
US4514712A (en) * | 1975-02-13 | 1985-04-30 | Mcdougal John A | Ignition coil |
-
1986
- 1986-06-03 FR FR8607938A patent/FR2599431B1/en not_active Expired
-
1987
- 1987-05-27 EP EP19870401203 patent/EP0248717B1/en not_active Expired - Lifetime
- 1987-05-27 DE DE8787401203T patent/DE3767570D1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2467725A (en) * | 1947-08-28 | 1949-04-19 | Westinghouse Electric Corp | Ignition system |
GB867060A (en) * | 1959-05-22 | 1961-05-03 | Wipac Dev Ltd | Improvements in and relating to transformers |
US4514712A (en) * | 1975-02-13 | 1985-04-30 | Mcdougal John A | Ignition coil |
WO1985000930A1 (en) * | 1983-08-05 | 1985-02-28 | Saab-Scania Aktiebolag | Ignition unit in the ignition system of an internal combustion engine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0344387A1 (en) * | 1988-05-31 | 1989-12-06 | Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE | Ignition unit comprising a combined spark plug and transformer for a cylinder of a thermal engine with spark ignition |
FR2661216A1 (en) * | 1990-04-23 | 1991-10-25 | Electricfil Ind Sarl | INTEGRATED INDIVIDUAL IGNITION COIL OF INTERNAL COMBUSTION ENGINE THERMAL MOTOR CANDLE AND CONTROL IGNITION. |
EP0454598A1 (en) * | 1990-04-23 | 1991-10-30 | Société à Responsabilité Limitée L'ELECTRICFIL INDUSTRIE | Integrated unit comprising an ignition coil and a plug for the individual controlled ignition in an internal combustion engine |
WO1992010672A1 (en) * | 1990-12-10 | 1992-06-25 | Caterpillar Inc. | Engine ignition system including a transformer assembly and positioning means therefor |
WO1997036354A1 (en) * | 1996-03-22 | 1997-10-02 | Florian Virchow | Sparking plug connector for an internal combustion engine |
US6068495A (en) * | 1996-03-22 | 2000-05-30 | Virchow; Florian | Sparking plug connector for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE3767570D1 (en) | 1991-02-28 |
FR2599431B1 (en) | 1988-09-09 |
FR2599431A1 (en) | 1987-12-04 |
EP0248717B1 (en) | 1991-01-23 |
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