EP0454598A1 - Integrated unit comprising an ignition coil and a plug for the individual controlled ignition in an internal combustion engine - Google Patents

Integrated unit comprising an ignition coil and a plug for the individual controlled ignition in an internal combustion engine Download PDF

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Publication number
EP0454598A1
EP0454598A1 EP91420134A EP91420134A EP0454598A1 EP 0454598 A1 EP0454598 A1 EP 0454598A1 EP 91420134 A EP91420134 A EP 91420134A EP 91420134 A EP91420134 A EP 91420134A EP 0454598 A1 EP0454598 A1 EP 0454598A1
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EP
European Patent Office
Prior art keywords
housing
barrel
coil body
ignition coil
double
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
Application number
EP91420134A
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German (de)
French (fr)
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EP0454598B1 (en
Inventor
Philippe François Marie Biton
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Electricfil Industrie SARL
Electricfil SA
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Electricfil Industrie SARL
Electricfil SA
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Publication of EP0454598A1 publication Critical patent/EP0454598A1/en
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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
    • 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
    • H01T13/40—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 present invention relates to the technical field of internal combustion thermal engines and, more particularly, of spark ignition engines.
  • the invention relates, more particularly, to ignition systems in which each spark plug is equipped with an electrical energy transformation coil capable of supplying it, from a low voltage electrical energy source. , a high voltage energy necessary for the production of an ignition spark inside the combustion chamber that such a spark plug equips.
  • each spark plug is fitted with an integrated individual ignition coil.
  • the objective in such a case is to reduce the length of the conductors or cables ensuring the transmission of high-voltage energy, in an attempt to eliminate significant electrical leaks detrimental to the proper functioning of the engine, but also to the radio environment -electric of such motors.
  • Such a structure poses problems of mechanical and electrical connection between the spark plug and the coil, in particular when the latter, produced in the form of an individual integrated block, must also be fitted to the cylinder head.
  • variable types of engines leads to equally variable shapes and cylinder head depths, so that it is necessary to make the blocks of integrated individual ignition coils in various forms and numerous, complementary to the various structures likely to be encountered.
  • the object of the invention is to fill the above gap by proposing a new integrated individual ignition coil particularly designed to be able to be produced in large series, at an attractive cost price, while offering a possibility of adaptation. to the various constructive characteristics of the engine cylinder heads, and in particular the well depths to guarantee good cooperation and a good mechanical electrical and dielectric connection between the connection terminal of a spark plug and the integrated individual ignition coil.
  • Fig. 1 is an elevation partly in section of an integrated individual ignition coil according to the invention.
  • Fig. 2 is a sectional elevation taken along line II - II of FIG. 1 .
  • Fig. 3 is a perspective, partially broken away, corresponding to FIGS. 1 and 2 .
  • Figs. 4 and 5 are perspective views, partially broken away, illustrating two alternative embodiments of one of the constituent elements of the integrated coil.
  • Figs. 1 and 2 show an integrated individual ignition coil of a spark plug 1 of a heat engine, located at the bottom of a well 2 of a cylinder head 3 of such an engine.
  • the coil designated as a whole by the reference 4 , is intended to be mounted on the cylinder head 3 to be interposed between the spark plug 1 and a power cable 5 , for example from a selective distributor 6 of the electronic type, supplied, directly or indirectly, from a storage source, such as a battery 7 , or a production source, such as an alternator.
  • the device 6 is designed so as to produce a temporary break in the supply of the coil 4 which is responsible, from a low voltage supply supplied by the cable 5 , to produce, as is conventional, a high voltage current at the candle 1 which comprises, in a traditional manner, a barrel 8 , as well as a connection terminal 9 constituted, in the usual way, for example by an olive.
  • the integrated individual ignition coil 4 comprises a housing or tank 10 , preferably made of a suitable plastic material, for example PBTP (polybutylene terephthalate) obtained by injection molding.
  • the housing 10 has an open top 11 and a bottom 12 , from which extends downwardly a barrel 13 of an insulating material, provided internally with a conductive core 14 , such as a metal bar ending at the open end part of the barrel 13 by a contact pad 15 .
  • PBTP polybutylene terephthalate
  • the barrel 13 forms, externally and set back from its open end, means 16 for adaptation for a tubular cap 17 of mechanical, electrical and dielectric cooperation with the spark plug 1 .
  • the cap 17 is made of a relatively flexible, non-conductive material, in particular silicone and represents an intermediate element responsible for ensuring an electrical connection and mechanical adaptation, as well as a seal and dielectric protection between the barrel 13 and the spark plug 1 .
  • the cap 17 forms a covering endpiece 18 capable of being fitted with sealing on the barrel 8 .
  • the cap 17 internally comprises a conductor 19 , elastically deformable, establishing a certain electrical connection between the pad 15 and the terminal 9 .
  • the elastic conductor 19 is advantageously constituted by a helical spring working under compression or a rubber cylinder driver.
  • the means 16 can be constituted in several different ways.
  • these means involve a flange 20 projecting from the periphery of the barrel 13 to cooperate with a complementary groove 21 presented by a housing 22 formed in the cap 17 to allow the barrel 13 to fit together.
  • the housing 22 is extended by a cylindrical bore 23 in which is located the conductor 19 which is normally constrained, after mounting of the cap 17 on the end portion of the barrel 13 , between the stud 15 and an internal shoulder of stop 24 able to be crossed by the connection terminal 9 of the spark plug 1 , after fitting of the covering end piece 18 on the barrel 8 of the latter.
  • the barrel 13 is an integral part of the bottom 12 of the housing 10 .
  • the barrel 13 is constituted by an independent part produced by injection in particular of a suitable plastic material such as in PBTP .
  • the barrel 13 extends in such a case, from a collar 25 , for example cylindrical, intended to be fitted into a base 26 formed by the bottom 12 of the housing or of the tank 10 .
  • the base 26 is preferably concentric with an opening 27 bordered by a flange 28 capable of cooperating with a rebate 29 formed in the connection zone, between the barrel 13 and the collar 25 .
  • Such means allow effective centering between the barrel 13 and the housing 10 , as well as the establishment of a sealed connection, in particular by interposing a seal 30 of the O-ring type for example.
  • the housing 10 contains, internally, a double coil body 35 constituted by a primary coil body 36 , made of any suitable insulating material, and a secondary coil body 37 concentric with the first that it surrounds.
  • the primary coil body carries a primary winding 38
  • the secondary body 37 carries a secondary winding 39 .
  • Section and length characteristics, as well as insulation primary and secondary windings must be considered to be within the skill of the art.
  • the bodies 36 and 37 are made of plastic, so that they can be threaded concentrically and axially as far as a stop position in which an axial immobilization snap intervenes, for example by means of a projection peripheral 40 formed by the secondary coil body 37 and engaged behind at least one projection 41 presented by the primary coil body 36 .
  • the coil bodies are produced in a substantially tubular form on which the primary and secondary windings are established in a conventional manner.
  • the double coil body is mounted inside the housing 10 , so as to be snapped onto the bottom 12 of the latter.
  • the latching occurs between moldings 42 formed by the secondary coil body 37 and latching lugs 43 rising from the bottom 12 .
  • the tabs 43 rise from the collar 25 which also forms abutment ribs 44 on which some at least of the concentric fins 45 formed by the secondary coil body come to bear. 37 .
  • a snap-fit by engagement in the direction of the arrow f1 occurs automatically between the double coil body and the housing 10 .
  • Such a snap-in ensures a firm and resistant mechanical connection, as well as a centering which can be supplemented, in particular by the existence of bearing surfaces formed by the primary coil body 36 , in order to cooperate with the corresponding internal faces of the housing 10 .
  • the reel according to the invention also comprises a cap 50 intended to be engaged through the open top 11 to be fitted to the double reel body 35 .
  • the cap 50 comprises a plate 51 provided with latching tabs 52 and abutment ribs 53 , so that it can be adapted by snapping onto the secondary coil body, in a manner analogous to that described above.
  • the legs 52 and the ribs 53 cooperate in this direction with the moldings 42 and at least some of the fins 45 .
  • the cap 50 carries a connector 60 which rises from the plate 51 to protrude from the open top 11 .
  • the connector 60 is, for example, of the type with three connection blades 61 , two of which such as 61 a and 61 b are connected to the two terminals of the primary winding 38 and the third of which 61 c is connected to one of the terminals of the secondary winding 39 , the other terminal of which is connected, directly or indirectly, to the conductive core 14 .
  • All of the above constituent parts are immobilized inside the housing 10 , in particular by means of a coating 62 of insulating plastic material, cast to fill and drown the double coil body, as well as the plate 51 .
  • the coil is completed by the presence of a laminated mass 70 passing through the housing 10 to be inserted inside the primary coil body 36 .
  • the laminated mass 70 comprises two closure loops surrounding the housing 10 and a central bar 71 passing through the primary coil body.
  • the mass is held on the housing by means of a stapling belt 72 .
  • the mass 70 is associated with a sole 73 forming legs 74 for direct or indirect attachment to the cylinder head 3 .
  • Fig. 4 shows an exemplary embodiment of the laminated mass 70 in the form of two assemblies 701 and 702 shaped to be placed face to face and together delimit the central bar 71 .
  • FIG. 5 An alternative embodiment is illustrated in which the laminated mass comprises a carcass 703 overmolded in the tank 10 and associated with an independent bar 71 , around which is threaded or overmolded the primary body 36 of the coil.
  • the constitution of the housing and of the barrel 13 also makes it possible to envisage a specific manufacture as a function of the lengths to be given to the barrel in order to respect the different depths of well likely to be encountered. In this way, it is possible to carry out the manufacture of the cap 17 in only one length, which makes it possible to lower the manufacturing cost by having recourse to large series of production from a raw material whose base price, relatively large, can only be compensated by means of mass production.
  • variable adaptation factor as a function of the depth of the wells, from different ranges of manufacture of cannons 13 of variable length which can always be mounted and adapted on or in the housing 10 in traditional production lines, without affecting their production rates.
  • the adaptation of the length of the barrel 13 as a function of the depth of the well makes it possible to implement a cap 17 of constant length, calculated so that its natural bending is relatively limited, so as to obtain, when adapting the integrated individual ignition coil on the cylinder head 3 , a certainty of fitting the end piece 18 on the barrel 8 and cooperation between the conductor 19 and the olive 9 .
  • the mechanical, electrical and dielectric cooperation functions devolved to the cap 17 are thus assumed in all cases, by providing a certainty of mechanical and electrical connection by simple introduction of the cap 17 inside the well 2 .

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  • 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)

Abstract

- Ignition of combustion engine. - The coil comprises: . a housing (10) extended at its base (12) by a barrel forming conductive section (13) provided with means (16) of adaptation for a hood (17), . a double tubular coil body (35) carrying concentrically a primary winding (38) and outside this a secondary winding (39), . an upper cap (50) carrying a connector (60) and snapped onto the double coil body, . a laminated mass (70) adapted to the housing and comprising a central bar (71) passing through the double coil body, - and a shell (62) filling the housing and embedding the double coil body. - Application to motor vehicle engines. <IMAGE>

Description

La présente invention est relative au domaine technique des moteurs thermiques à combustion interne et, plus particulièrement, des moteurs à allumage commandé par l'intermédiaire de bougies.The present invention relates to the technical field of internal combustion thermal engines and, more particularly, of spark ignition engines.

L'invention vise, plus particulièrement, les systèmes d'allumage dans lesquels chaque bougie d'allumage est équipée d'une bobine de transformation d'énergie électrique à même de lui fournir, à partir d'une source d'énergie électrique basse tension, une énergie haute tension nécessaire pour la production d'une étincelle d'allumage à l'intérieur de la chambre de combustion qu'une telle bougie équipe.The invention relates, more particularly, to ignition systems in which each spark plug is equipped with an electrical energy transformation coil capable of supplying it, from a low voltage electrical energy source. , a high voltage energy necessary for the production of an ignition spark inside the combustion chamber that such a spark plug equips.

Si initialement les systèmes d'allumage de tels moteurs comprenaient une seule bobine transformatrice dont le courant haute tension était ensuite distribué à chacune des bougies par l'intermédiaire d'un distributeur mécanique ou électronique, une évolution technique a fait apparaître, depuis quelques temps, une proposition selon laquelle chaque bougie est équipée d'une bobine intégrée d'allumage individuel. L'objectif visé dans un tel cas est de réduire la longueur des conducteurs ou câbles assurant la transmission de l'énergie haute tension, afin de tenter de supprimer les fuites électriques importantes préjudiciables au bon fonctionnement du moteur, mais aussi à l'environnement radio-électrique de tels moteurs.If the ignition systems of such engines initially included a single transformer coil, the high voltage current of which was then distributed to each of the spark plugs via a mechanical or electronic distributor, a technical development has revealed, for some time, a proposition that each spark plug is fitted with an integrated individual ignition coil. The objective in such a case is to reduce the length of the conductors or cables ensuring the transmission of high-voltage energy, in an attempt to eliminate significant electrical leaks detrimental to the proper functioning of the engine, but also to the radio environment -electric of such motors.

Parallèlement, on assiste également à une évolution structurelle des moteurs, en vue d'améliorer leurs performances, de réduire leur consommation et de diminuer la pollution dont ils sont la cause. A cette fin, les moteurs sont conçus pour travailler à des taux de compression plus élevés et sous des températures plus fortes. L'une des conséquences structurelles est la transformation de la culasse qui fait généralement intervenir des puits profonds au fond desquels sont implantées les bougies d'allumage.At the same time, we are also witnessing a structural development of the engines, with a view to improving their performance, reducing their consumption and reducing the pollution which they cause. To this end, the motors are designed to work at higher compression rates and at higher temperatures. One of the structural consequences is the transformation of the cylinder head which generally involves deep wells at the bottom of which are installed the spark plugs.

Une telle structure pose des problèmes de liaison mécanique et électrique entre la bougie et la bobine, notamment lorsque cette dernière, réalisée sous la forme d'un bloc intégré individuel, doit être adaptée aussi sur la culasse.Such a structure poses problems of mechanical and electrical connection between the spark plug and the coil, in particular when the latter, produced in the form of an individual integrated block, must also be fitted to the cylinder head.

Il doit être considéré en plus que l'existence de types variables de moteurs conduit à des formes et des profondeurs de culasse également variables, de sorte qu'il est nécessaire de réaliser les blocs de bobines intégrées d'allumage individuel sous des formes variées et nombreuses, complémentaires aux différentes structures susceptibles d'être rencontrées.It must be considered in addition that the existence of variable types of engines leads to equally variable shapes and cylinder head depths, so that it is necessary to make the blocks of integrated individual ignition coils in various forms and numerous, complementary to the various structures likely to be encountered.

Une telle obligation ne permet pas de recourir à une fabrication en grande série permettant d'abaisser notablement le prix de revient.Such an obligation does not make it possible to resort to mass production making it possible to significantly reduce the cost price.

Une telle obligation ne permet pas non plus de garantir qu'une liaison mécanique et électrique irréprochable interviendra dans tous les cas entre la bobine d'allumage intégrée et la bougie.Nor does such an obligation guarantee that an irreproachable mechanical and electrical connection will occur in all cases between the integrated ignition coil and the spark plug.

L'objet de l'invention est de combler la lacune ci-dessus en proposant une nouvelle bobine intégrée d'allumage individuel particulièrement conçue pour pouvoir être produite en grande série, à un prix de revient intéressant, tout en offrant une possibilité d'adaptation aux différentes caractéristiques constructives des culasses de moteur, et notamment des profondeurs de puits pour garantir une bonne coopération et une bonne liaison mécanique électrique et diélectrique entre la borne de connexion d'une bougie et la bobine intégrée d'allumage individuel.The object of the invention is to fill the above gap by proposing a new integrated individual ignition coil particularly designed to be able to be produced in large series, at an attractive cost price, while offering a possibility of adaptation. to the various constructive characteristics of the engine cylinder heads, and in particular the well depths to guarantee good cooperation and a good mechanical electrical and dielectric connection between the connection terminal of a spark plug and the integrated individual ignition coil.

Pour atteindre les objectifs ci-dessus, la bobine intégrée d'allumage individuel d'une bougie de moteur thermique à combustion interne et à allumage commandé est caractérisée en ce qu'elle comprend :

  • un boîtier ou une cuve ouvert sur le dessus et prolongé par son fond par un canon, en partie conducteur, pourvu de moyens d'adaptation d'un capuchon de coopération mécanique, électrique et diélectrique avec la borne de connexion d'une bougie,
  • un double corps de bobine tubulaire portant concentriquement un enroulement primaire et, extérieurement à ce dernier, un enroulement secondaire dont une borne est connectée au canon, ledit double corps de bobine étant emboîté sur des pattes d'encliquetage s'élevant à partir du fond du boîtier,
  • un chapeau supérieur portant un connecteur branché aux deux bornes de l'enroulement primaire et à la seconde borne de l'enroulement secondaire, ledit chapeau étant encliqueté sur le double corps de bobine,
  • une masse feuilletée adaptée sur le boîtier et comportant un barreau central traversant le double corps de bobine intérieurement au bobinage primaire,
  • et un enrobage de matière synthétique remplissant le boîtier et noyant le double corps de bobine, les enroulements et le chapeau, hormis le connecteur.
To achieve the above objectives, the integrated individual ignition coil of a spark plug of an internal combustion and positive ignition engine is characterized in that it comprises:
  • a box or a tank open on the top and extended by its bottom by a barrel, partly conductive, provided with means for adapting a cap of mechanical, electrical and dielectric cooperation with the connection terminal of a spark plug,
  • a double tubular coil body concentrically carrying a primary winding and, externally to the latter, a secondary winding, one terminal of which is connected to the barrel, said double coil body being fitted on latching tabs rising from the bottom of the housing,
  • an upper cap carrying a connector connected to the two terminals of the primary winding and to the second terminal of the secondary winding, said cap being snapped onto the double coil body,
  • a laminated mass adapted to the housing and comprising a central bar passing through the double coil body internally to the primary winding,
  • and a coating of synthetic material filling the casing and embedding the double coil body, the windings and the cap, except for the connector.

Diverses autres caractéristiques ressortent de la description faite ci-dessous en référence aux dessins annexés qui montrent, à titre d'exemples non limitatifs, des formes de réalisation de l'objet de l'invention.Various other characteristics will emerge from the description given below with reference to the appended drawings which show, by way of nonlimiting examples, embodiments of the subject of the invention.

La fig. 1 est une élévation partie en coupe d'une bobine intégrée d'allumage individuel conforme à l'invention. Fig. 1 is an elevation partly in section of an integrated individual ignition coil according to the invention.

La fig. 2 est une coupe-élévation prise selon la ligne II-II de la fig. 1. Fig. 2 is a sectional elevation taken along line II - II of FIG. 1 .

La fig. 3 est une perspective, en partie arrachée, correspondant aux fig. 1 et 2. Fig. 3 is a perspective, partially broken away, corresponding to FIGS. 1 and 2 .

Les fig. 4 et 5 sont des perspectives, en partie arrachée, illustrant deux variantes de réalisation d'un des éléments constitutifs de la bobine intégrée. Figs. 4 and 5 are perspective views, partially broken away, illustrating two alternative embodiments of one of the constituent elements of the integrated coil.

Les fig. 1 et 2 montrent une bobine intégrée d'allumage individuel d'une bougie 1 d'un moteur thermique, implantée au fond d'un puits 2 d'une culasse 3 d'un tel moteur. La bobine, désignée dans son ensemble par la référence 4, est destinée à être montée sur la culasse 3 pour être interposée entre la bougie 1 et un câble d'alimentation 5, par exemple issu d'un distributeur sélectif 6 du type électronique, alimenté, directement ou indirectement, à partir d'une source de stockage, telle qu'une batterie 7, ou d'une source de production, telle qu'un alternateur. Figs. 1 and 2 show an integrated individual ignition coil of a spark plug 1 of a heat engine, located at the bottom of a well 2 of a cylinder head 3 of such an engine. The coil, designated as a whole by the reference 4 , is intended to be mounted on the cylinder head 3 to be interposed between the spark plug 1 and a power cable 5 , for example from a selective distributor 6 of the electronic type, supplied, directly or indirectly, from a storage source, such as a battery 7 , or a production source, such as an alternator.

Le dispositif 6 est conçu de manière à produire une rupture temporaire d'alimentation de la bobine 4 qui est chargée, à partir d'une alimentation basse tension fournie par le câble 5, de produire, comme cela est conventionnel, un courant haute tension à la bougie 1 qui comprend, de façon traditionnelle, un fût 8, ainsi qu'une borne de connexion 9 constituée, de façon habituelle, par exemple par une olive.The device 6 is designed so as to produce a temporary break in the supply of the coil 4 which is responsible, from a low voltage supply supplied by the cable 5 , to produce, as is conventional, a high voltage current at the candle 1 which comprises, in a traditional manner, a barrel 8 , as well as a connection terminal 9 constituted, in the usual way, for example by an olive.

La bobine intégrée d'allumage individuel 4 comprend un boîtier ou cuve 10, de préférence réalisé en une matière plastique appropriée, par exemple en PBTP (polybutyléne téréphtalate) obtenu par moulage par injection. Le boîtier 10 comporte un dessus ouvert 11 et un fond 12, à partir duquel s'étend vers le bas un canon 13 en une matière isolante, pourvu, intérieurement, d'une âme conductrice 14, telle qu'un barreau métallique se terminant à la partie terminale ouverte du canon 13 par un plot de contact 15.The integrated individual ignition coil 4 comprises a housing or tank 10 , preferably made of a suitable plastic material, for example PBTP (polybutylene terephthalate) obtained by injection molding. The housing 10 has an open top 11 and a bottom 12 , from which extends downwardly a barrel 13 of an insulating material, provided internally with a conductive core 14 , such as a metal bar ending at the open end part of the barrel 13 by a contact pad 15 .

Le canon 13 forme, extérieurement et en retrait de son extrêmité ouverte, des moyens 16 d'adaptation pour un capuchon tubulaire 17 de coopération mécanique, électrique et diélectrique avec la bougie 1. Le capuchon 17 est réalisé en une matière relativement souple, non conductrice, notamment en silicone et représente un élément intermédiaire chargé d'assurer une connexion électrique et une adaptation mécanique, ainsi qu'une étanchéité et protection diélectrique entre le canon 13 et la bougie 1.The barrel 13 forms, externally and set back from its open end, means 16 for adaptation for a tubular cap 17 of mechanical, electrical and dielectric cooperation with the spark plug 1 . The cap 17 is made of a relatively flexible, non-conductive material, in particular silicone and represents an intermediate element responsible for ensuring an electrical connection and mechanical adaptation, as well as a seal and dielectric protection between the barrel 13 and the spark plug 1 .

A cette fin, le capuchon 17 forme un embout de recouvrement 18 à même d'être emboîté avec étanchéité sur le fût 8. Le capuchon 17 comporte intérieurement un conducteur 19, déformable élastiquement, établissant une liaison électrique certaine entre le plot 15 et la borne 9. Le conducteur élastique 19 est, avantageusement, constitué par un ressort hélicoïdal travaillant à la compression ou un cylindre en caoutchouc conducteur.To this end, the cap 17 forms a covering endpiece 18 capable of being fitted with sealing on the barrel 8 . The cap 17 internally comprises a conductor 19 , elastically deformable, establishing a certain electrical connection between the pad 15 and the terminal 9 . The elastic conductor 19 is advantageously constituted by a helical spring working under compression or a rubber cylinder driver.

Les moyens 16 peuvent être constitués de plusieurs façons différentes. Avantageusement, ces moyens font intervenir une collerette 20 formée en saillie à la périphérie du canon 13 pour coopérer avec une gorge complémentaire 21 présentée par un logement 22 ménagé dans le capuchon 17 pour permettre l'emboîtement du canon 13. Dans le cas présent, le logement 22 est prolongé par un alésage cylindrique 23 dans lequel se trouve disposé le conducteur 19 qui est normalement contraint, après montage du capuchon 17 sur la partie terminale du canon 13, entre le plot 15 et un épaulement interne de butée 24 à même d'être traversé par la borne de connexion 9 de la bougie 1, après emboîtement de l'embout de recouvrement 18 sur le fût 8 de cette dernière.The means 16 can be constituted in several different ways. Advantageously, these means involve a flange 20 projecting from the periphery of the barrel 13 to cooperate with a complementary groove 21 presented by a housing 22 formed in the cap 17 to allow the barrel 13 to fit together. In this case, the housing 22 is extended by a cylindrical bore 23 in which is located the conductor 19 which is normally constrained, after mounting of the cap 17 on the end portion of the barrel 13 , between the stud 15 and an internal shoulder of stop 24 able to be crossed by the connection terminal 9 of the spark plug 1 , after fitting of the covering end piece 18 on the barrel 8 of the latter.

Dans une forme de réalisation possible, le canon 13 fait partie intégrante du fond 12 du boîtier 10. Dans une forme de réalisation préférée, telle qu'illustrée par les fig. 2 et 3 notamment, le canon 13 est constitué par une pièce indépendante réalisée par injection notamment d'une matière plastique appropriée telle qu'en PBTP. Le canon 13 s'étend dans un tel cas, à partir d'un collet 25, par exemple cylindrique, destiné à être emboîté dans une embase 26 formée par le fond 12 du boîtier ou de la cuve 10. L'embase 26 est, de préférence, concentrique à une ouverture 27 bordée par un rebord 28 à même de coopérer avec une feuillure 29 formée dans la zone de liaison, entre le canon 13 et le collet 25. De tels moyens permettent un centrage efficace entre le canon 13 et le boîtier 10, ainsi que l'établissement d'une liaison étanche, notamment par interposition d'un joint d'étanchéité 30 du type torique par exemple.In one possible embodiment, the barrel 13 is an integral part of the bottom 12 of the housing 10 . In a preferred embodiment, as illustrated in Figs. 2 and 3 in particular, the barrel 13 is constituted by an independent part produced by injection in particular of a suitable plastic material such as in PBTP . The barrel 13 extends in such a case, from a collar 25 , for example cylindrical, intended to be fitted into a base 26 formed by the bottom 12 of the housing or of the tank 10 . The base 26 is preferably concentric with an opening 27 bordered by a flange 28 capable of cooperating with a rebate 29 formed in the connection zone, between the barrel 13 and the collar 25 . Such means allow effective centering between the barrel 13 and the housing 10 , as well as the establishment of a sealed connection, in particular by interposing a seal 30 of the O-ring type for example.

Le boîtier 10 contient, intérieurement, un double corps de bobine 35 constitué par un corps de bobine primaire 36, réalisé en toute matière isolante appropriée, et un corps de bobine secondaire 37 concentrique au premier qu'il entoure. Le corps de bobine primaire porte un enroulement primaire 38, alors que le corps secondaire 37 porte un enroulement secondaire 39. Les caractéristiques de section et de longueur, ainsi que d'isolement des enroulements primaire et secondaire doivent être considérés comme relevant de la technique de l'homme de métier. De préférence, les corps 36 et 37 sont réalisés en matière plastique, de manière à pouvoir être enfilés concentriquement et axialement jusque dans une position de butée dans laquelle un encliquetage d'immobilisation axiale intervient, par exemple, par l'intermédiaire d'une saillie périphérique 40 formée par le corps de bobine secondaire 37 et engagé derrière au moins une saillie 41 présentée par le corps de bobine primaire 36. Ainsi que cela ressort des fig. 1 et 3, les corps de bobine sont réalisés sous une forme sensiblement tubulaire sur lesquels les enroulements primaire et secondaire sont établis de façon conventionnelle.The housing 10 contains, internally, a double coil body 35 constituted by a primary coil body 36 , made of any suitable insulating material, and a secondary coil body 37 concentric with the first that it surrounds. The primary coil body carries a primary winding 38 , while the secondary body 37 carries a secondary winding 39 . Section and length characteristics, as well as insulation primary and secondary windings must be considered to be within the skill of the art. Preferably, the bodies 36 and 37 are made of plastic, so that they can be threaded concentrically and axially as far as a stop position in which an axial immobilization snap intervenes, for example by means of a projection peripheral 40 formed by the secondary coil body 37 and engaged behind at least one projection 41 presented by the primary coil body 36 . As is apparent from FIGS. 1 and 3 , the coil bodies are produced in a substantially tubular form on which the primary and secondary windings are established in a conventional manner.

Selon une disposition de l'invention, le double corps de bobine est monté à l'intérieur du boîtier 10, de manière à être encliqueté sur le fond 12 de ce dernier. Selon une disposition constructive particulièrement avantageuse, l'encliquetage intervient entre des moulures 42 formées par le corps de bobine secondaire 37 et des pattes d'encliquetage 43 s'élevant à partir du fond 12.According to an arrangement of the invention, the double coil body is mounted inside the housing 10 , so as to be snapped onto the bottom 12 of the latter. According to a particularly advantageous constructive arrangement, the latching occurs between moldings 42 formed by the secondary coil body 37 and latching lugs 43 rising from the bottom 12 .

Dans la réalisation préférée de l'invention, les pattes 43 s'élèvent à partir du collet 25 qui forme, par ailleurs, des nervures de butée 44 sur lesquelles viennent prendre appui certaines au moins des ailettes concentriques 45 formées par le corps de bobine secondaire 37. De cette manière, un encliquetage par enpar engagement dans le sens de la flèche f₁ intervient automatiquement entre le double corps de bobine et le boîtier 10. Un tel encliquetage assure une liaison mécanique ferme et résistante, ainsi qu'un centrage qui peut être complété, notamment par l'existence de portées formées par le corps de bobine primaire 36, afin de coopérer avec les faces internes correspondantes du boîtier 10.In the preferred embodiment of the invention, the tabs 43 rise from the collar 25 which also forms abutment ribs 44 on which some at least of the concentric fins 45 formed by the secondary coil body come to bear. 37 . In this way, a snap-fit by engagement in the direction of the arrow f₁ occurs automatically between the double coil body and the housing 10 . Such a snap-in ensures a firm and resistant mechanical connection, as well as a centering which can be supplemented, in particular by the existence of bearing surfaces formed by the primary coil body 36 , in order to cooperate with the corresponding internal faces of the housing 10 .

La bobine selon l'invention comprend, par ailleurs, un chapeau 50 destiné à être engagé à travers le dessus ouvert 11 pour être adapté sur le double corps de bobine 35. De préférence, le chapeau 50 comporte un plateau 51 pourvu de pattes d'encliquetage 52 et de nervures de butée 53, de manière à pouvoir être adapté par encliquetage sur le corps de bobine secondaire, d'une manière analogue à ce qui est décrit précédemment. Les pattes 52 et les nervures 53 coopèrent dans ce sens avec les moulures 42 et certaines au moins des ailettes 45.The reel according to the invention also comprises a cap 50 intended to be engaged through the open top 11 to be fitted to the double reel body 35 . Preferably, the cap 50 comprises a plate 51 provided with latching tabs 52 and abutment ribs 53 , so that it can be adapted by snapping onto the secondary coil body, in a manner analogous to that described above. The legs 52 and the ribs 53 cooperate in this direction with the moldings 42 and at least some of the fins 45 .

Le chapeau 50 porte un connecteur 60 qui s'élève à partir du plateau 51 pour faire saillie hors du dessus ouvert 11. Le connecteur 60 est, par exemple, du type à trois lames de connexion 61 dont deux telles que 61a et 61b sont branchées aux deux bornes de l'enroulement primaire 38 et dont la troisième 61c est connectée à l'une des bornes de l'enroulement secondaire 39 dont l'autre borne est raccordée, directement ou indirectement, à l'âme conductrice 14.The cap 50 carries a connector 60 which rises from the plate 51 to protrude from the open top 11 . The connector 60 is, for example, of the type with three connection blades 61 , two of which such as 61 a and 61 b are connected to the two terminals of the primary winding 38 and the third of which 61 c is connected to one of the terminals of the secondary winding 39 , the other terminal of which is connected, directly or indirectly, to the conductive core 14 .

L'ensemble des pièces constitutives ci-dessus est immobilisé à l'intérieur du boîtier 10, notamment par l'intermédiaire d'un enrobage 62 en matière plastique isolante, coulée pour remplir et noyer le double corps de bobine, ainsi que le plateau 51.All of the above constituent parts are immobilized inside the housing 10 , in particular by means of a coating 62 of insulating plastic material, cast to fill and drown the double coil body, as well as the plate 51 .

La bobine est complétée par la présence d'une masse feuilletée 70 traversant le boîtier 10 pour être insérée à l'intérieur du corps de bobine primaire 36. De façon connue, la masse feuilletée 70 comporte deux boucles de fermeture entourant le boîtier 10 et un barreau central 71 traversant le corps de bobine primaire. La masse est maintenue sur le boîtier par l'intermédiaire d'une ceinture d'agrafage 72. De préférence, la masse 70 est associée à une semelle 73 formant des pattes 74 de fixation directe ou indirecte sur la culasse 3.The coil is completed by the presence of a laminated mass 70 passing through the housing 10 to be inserted inside the primary coil body 36 . In known manner, the laminated mass 70 comprises two closure loops surrounding the housing 10 and a central bar 71 passing through the primary coil body. The mass is held on the housing by means of a stapling belt 72 . Preferably, the mass 70 is associated with a sole 73 forming legs 74 for direct or indirect attachment to the cylinder head 3 .

La fig. 4 montre un exemple de réalisation de la masse feuilletée 70 sous la forme de deux ensembles 70₁ et 70₂ conformés pour être placés face à face et délimiter ensemble le barreau 71 central. Fig. 4 shows an exemplary embodiment of the laminated mass 70 in the form of two assemblies 70₁ and 70₂ shaped to be placed face to face and together delimit the central bar 71 .

Une variante de réalisation est illustrée par la fig. 5 dans laquelle la masse feuilletée comprend une carcasse 70₃ surmoulée dans la cuve 10 et associée à un barreau 71 indépendant, autour duquel est enfilé ou surmoulé le corps primaire 36 de la bobine.An alternative embodiment is illustrated in FIG. 5 in which the laminated mass comprises a carcass 70₃ overmolded in the tank 10 and associated with an independent bar 71 , around which is threaded or overmolded the primary body 36 of the coil.

Par les moyens ci-dessus, il devient possible de réaliser, par fabrication en grande série et à un prix de revient intéressant, une bobine intégrée d'allumage individuel dont l'ensemble des éléments constitutifs sont associés par simple encliquetage préalablement à un enrobage dans une matière plastique coulée. Il est, en effet, possible de constituer un ensemble encliqueté comprenant l'enroulement primaire, l'enroulement secondaire, le chapeau et le canon sur lequel ensemble les liaisons électriques peuvent être réalisées positivement, puis de monter, ensuite, cet ensemble dans le boîtier.By the above means, it becomes possible to produce, by mass production and at an attractive cost price, an integrated individual ignition coil, all of the constituent elements of which are associated by simple snap-fitting prior to coating in a plastic material cast. It is, in fact, possible to constitute a snap-on assembly comprising the primary winding, the secondary winding, the cap and the barrel on which together the electrical connections can be made positively, and then to mount this assembly in the housing. .

Il est aussi possible de réaliser, par surmoulage, le boîtier et la masse feuilletée 70₃ et de monter ensuite, par encliquetage, l'ensemble précédent.It is also possible to produce, by overmolding, the housing and the laminated mass 70₃ and then to mount, by snap- fastening , the preceding assembly.

La constitution du boîtier et du canon 13 permet aussi d'envisager une fabrication spécifique en fonction des longueurs devant être conférées au canon pour respecter les différentes profondeurs de puits susceptibles d'être rencontrées. De cette manière, il est possible de ne réaliser la fabrication du capuchon 17 qu'en une seule longueur, ce qui permet d'abaisser le coût de fabrication en ayant recours à des grandes séries de production à partir d'une matière première dont le prix de base, relativement important, ne peut être compensé qu'au moyen d'une fabrication en très grande série.The constitution of the housing and of the barrel 13 also makes it possible to envisage a specific manufacture as a function of the lengths to be given to the barrel in order to respect the different depths of well likely to be encountered. In this way, it is possible to carry out the manufacture of the cap 17 in only one length, which makes it possible to lower the manufacturing cost by having recourse to large series of production from a raw material whose base price, relatively large, can only be compensated by means of mass production.

L'avantage ci-dessus est plus particulièrement acquis dans le cas de réalisation d'un canon 13 en tant que pièce indépendante du boîtier 10. En effet, il devient possible de limiter le facteur variable d'adaptation en fonction de la profondeur des puits, à partir de différentes gammes de fabrication de canons 13 de longueur variable qui peuvent toujours être montés et adaptés sur ou dans le boîtier 10 dans des chaînes de fabrication traditionnelles, sans incidence sur les cadences de fabrication de ces dernières.The above advantage is more particularly acquired in the case of producing a barrel 13 as an independent part of the housing 10 . Indeed, it becomes possible to limit the variable adaptation factor as a function of the depth of the wells, from different ranges of manufacture of cannons 13 of variable length which can always be mounted and adapted on or in the housing 10 in traditional production lines, without affecting their production rates.

L'adaptation de la longueur du canon 13 en fonction de la profondeur du puits permet de mettre en oeuvre un capuchon 17 de longueur constante, calculée pour que sa flexion naturelle soit relativement limitée, de manière à obtenir, lors de l'adaptation de la bobine intégrée d'allumage individuel sur la culasse 3, une certitude d'emboîtement de l'embout 18 sur le fût 8 et de coopération entre le conducteur 19 et l'olive 9. Les fonctions de coopération mécanique, électrique et diélectrique dévolues au capuchon 17 sont ainsi assumées dans tous les cas, en fournissant une certitude de liaison mécanique et électrique par simple introduction du capuchon 17 à l'intérieur du puits 2.The adaptation of the length of the barrel 13 as a function of the depth of the well makes it possible to implement a cap 17 of constant length, calculated so that its natural bending is relatively limited, so as to obtain, when adapting the integrated individual ignition coil on the cylinder head 3 , a certainty of fitting the end piece 18 on the barrel 8 and cooperation between the conductor 19 and the olive 9 . The mechanical, electrical and dielectric cooperation functions devolved to the cap 17 are thus assumed in all cases, by providing a certainty of mechanical and electrical connection by simple introduction of the cap 17 inside the well 2 .

L'invention n'est pas limitée aux exemples décrits et représentés, car diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the examples described and shown, since various modifications can be made thereto without departing from its scope.

Claims (10)

1 - Bobine intégrée d'allumage individuel d'une bougie de moteur thermique à combustion interne et à allumage commandé,
   caractérisée en ce qu'elle comprend : - un boîtier ou cuve (10) ouvert sur le dessus (11) et prolongé, par son fond (12), par un canon, en partie conducteur (13), pourvu de moyens (16) d'adaptation d'un capuchon (17) de coopération mécanique, électrique et diélectrique avec la borne de connexion (9) d'une bougie (1), - un double corps de bobine tubulaire (35) portant concentriquement un enroulement primaire (38) et, extérieurement à ce dernier, un enroulement secondaire (39) dont une borne est connectée au canon, ledit double corps de bobine étant emboîté sur des pattes d'encliquetage (43) s'élevant à partir du fond du boîtier, - un chapeau supérieur (50) portant un connecteur (60) branché aux deux bornes de l'enroulement primaire et à la seconde borne de l'enroulement secondaire, ledit chapeau étant encliqueté sur le double corps de bobine, - une masse feuilletée (70) adaptée sur le boîtier et comportant un barreau central (71) traversant le double corps de bobine intérieurement au bobinage primaire, - et un enrobage (62) de matière synthétique remplissant le boîtier et noyant le double corps de bobine, les enroulements et le chapeau, hormis le connecteur. 1 - Integrated individual ignition coil of an internal combustion engine spark plug and spark ignition,
characterized in that it comprises: - A housing or tank ( 10 ) open on the top ( 11 ) and extended, by its bottom ( 12 ), by a barrel, partly conductive ( 13 ), provided with means ( 16 ) for adapting a cap ( 17 ) mechanical, electrical and dielectric cooperation with the connection terminal ( 9 ) of a spark plug ( 1 ), - a double tubular coil body ( 35 ) concentrically carrying a primary winding ( 38 ) and, externally to the latter, a secondary winding ( 39 ), one terminal of which is connected to the barrel, said double coil body being fitted on lugs 'snap ( 43 ) rising from the bottom of the housing, - an upper cap ( 50 ) carrying a connector ( 60 ) connected to the two terminals of the primary winding and to the second terminal of the secondary winding, said cap being snapped onto the double coil body, a laminated mass ( 70 ) adapted to the housing and comprising a central bar ( 71 ) passing through the double coil body internally at the primary winding, - And a coating ( 62 ) of synthetic material filling the housing and drowning the double coil body, the windings and the cap, except for the connector. 2 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que le canon (13) fait partie intégrante du fond (12) du boîtier. 2 - Integrated ignition coil according to claim 1, characterized in that the barrel ( 13 ) is an integral part of the bottom ( 12 ) of the housing. 3 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que le canon (13) est constitué par une pièce indépendante emboîtée avec étanchéité par un collet (25) qu'elle forme, dans une embase de centrage (26) présentée par le fond (12) autour d'une ouverture (27) de passage du canon. 3 - Integrated ignition coil according to claim 1, characterized in that the barrel ( 13 ) consists of a part independent nested with sealing by a collar ( 25 ) which it forms, in a centering base ( 26 ) presented by the bottom ( 12 ) around an opening ( 27 ) for passage of the barrel. 4 - Bobine intégrée d'allumage selon la revendication 3, caractérisée en ce que le collet (25) comporte, à l'opposé du canon, des nervures de butée (44) et des pattes d'encliquetage (43) à même de coopérer, respectivement, avec des ailettes (45) et des moulures (42) du double corps de bobine. 4 - Integrated ignition coil according to claim 3, characterized in that the collar ( 25 ) comprises, opposite the barrel, abutment ribs ( 44 ) and latching tabs ( 43 ) able to cooperate , respectively, with fins ( 45 ) and moldings ( 42 ) of the double coil body. 5 - Bobine intégrée d'allumage selon l'une des revendications 1 à 3, caractérisée en ce que le canon (13) comprend, intérieurement, une âme conductrice (14) et forme en bout une collerette (20) extérieure d'insertion dans une gorge complémentaire (21) présentée par la surface interne du capuchon (17) qui contient, intérieurement, un conducteur (19) déformable élastiquement en contact permanent avec l'âme conductrice. 5 - Integrated ignition coil according to one of claims 1 to 3, characterized in that the barrel ( 13 ) comprises, internally, a conductive core ( 14 ) and forms at the end an external collar ( 20 ) for insertion into a complementary groove ( 21 ) presented by the internal surface of the cap ( 17 ) which contains, internally, a conductor ( 19 ) elastically deformable in permanent contact with the conductive core. 6 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que le double corps de bobine (35) est constitué par deux corps indépendants (36 et 37) emboîtés concentriquement. 6 - Integrated ignition coil according to claim 1, characterized in that the double coil body ( 35 ) is constituted by two independent bodies ( 36 and 37 ) concentrically nested. 7 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que le chapeau (50) est constitué par un plateau (51) dont l'une des faces est surmontée par le connecteur (60) et dont l'autre face forme en saillie des nervures de butée (53) et des pattes d'encliquetage (52) à même de coopérer, respectivement, avec les ailettes et des moulures du double corps de bobine. 7 - Integrated ignition coil according to claim 1, characterized in that the cap ( 50 ) is constituted by a plate ( 51 ) one of the faces of which is surmounted by the connector ( 60 ) and the other face of which forms projecting ribs of stop ( 53 ) and latching tabs ( 52 ) able to cooperate, respectively, with the fins and moldings of the double coil body. 8 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que la masse feuilletée (70) est maintenue sur le boîtier par une ceinture d'agrafage (72). 8 - Integrated ignition coil according to claim 1, characterized in that the laminated mass ( 70 ) is held on the housing by a stapling belt ( 72 ). 9 - Bobine intégrée d'allumage selon la revendication 1, caractérisée en ce que la masse feuilletée (70) est intégrée par surmoulage au boîtier (10). 9 - Integrated ignition coil according to claim 1, characterized in that the laminated mass ( 70 ) is integrated by molding in the housing ( 10 ). 10 - Bobine intégrée d'allumage selon la revendication 1, 8 ou 9, caractérisée en ce que la masse feuilletée (70) est associée à une semelle (73) comportant des pattes (74) de fixation sur la culasse d'un moteur. 10 - Integrated ignition coil according to claim 1, 8 or 9, characterized in that the laminated mass ( 70 ) is associated with a sole ( 73 ) comprising lugs ( 74 ) for fixing to the cylinder head of an engine.
EP19910420134 1990-04-23 1991-04-23 Integrated unit comprising an ignition coil and a plug for the individual controlled ignition in an internal combustion engine Expired - Lifetime EP0454598B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005353A FR2661216B1 (en) 1990-04-23 1990-04-23 INTEGRATED INDIVIDUAL IGNITION COIL OF AN INTERNAL COMBUSTION AND CONTROLLED IGNITION THERMAL ENGINE SPARK PLUG.
FR9005353 1990-04-23

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EP0454598A1 true EP0454598A1 (en) 1991-10-30
EP0454598B1 EP0454598B1 (en) 1997-02-05

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DE (1) DE69124540T2 (en)
ES (1) ES2099742T3 (en)
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WO1993009345A1 (en) * 1991-11-05 1993-05-13 Robert Bosch Gmbh Ignition coil for ignition systems of internal combustion engines
DE4309818A1 (en) * 1993-03-26 1994-09-29 Bayerische Motoren Werke Ag Ignition unit for internal combustion engines
EP0715073A2 (en) 1994-11-30 1996-06-05 Bayerische Motoren Werke Aktiengesellschaft Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
DE4404957C2 (en) * 1994-02-17 2003-08-21 Bosch Gmbh Robert Ignition coil for an internal combustion engine
FR2933528A1 (en) * 2008-07-07 2010-01-08 Electricfil Automotive IGNITION MODULE FOR THERMAL MOTOR COIL WITH INTERNAL COMBUSTION AND IGNITION CONTROL
US8365710B2 (en) 2008-10-03 2013-02-05 Federal-Mogul Ignition Company Ignitor for air/fuel mixture and engine therewith and method of assembly thereof into a cylinder head

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FR2986112B1 (en) 2012-01-25 2014-03-07 Electricfil Automotive ELECTROMAGNETIC COMPONENT STRUCTURE WITH LIMITED ENCOMBREMENT AND ELECTROMAGNETIC COMPONENT, IN PARTICULAR THERMAL MOTOR COILS

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WO1993009345A1 (en) * 1991-11-05 1993-05-13 Robert Bosch Gmbh Ignition coil for ignition systems of internal combustion engines
DE4309818A1 (en) * 1993-03-26 1994-09-29 Bayerische Motoren Werke Ag Ignition unit for internal combustion engines
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DE4404957C2 (en) * 1994-02-17 2003-08-21 Bosch Gmbh Robert Ignition coil for an internal combustion engine
EP0715073A2 (en) 1994-11-30 1996-06-05 Bayerische Motoren Werke Aktiengesellschaft Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
FR2933528A1 (en) * 2008-07-07 2010-01-08 Electricfil Automotive IGNITION MODULE FOR THERMAL MOTOR COIL WITH INTERNAL COMBUSTION AND IGNITION CONTROL
WO2010004202A1 (en) * 2008-07-07 2010-01-14 Electricfil Automotive Ignition module for a spark-ignition internal combustion engine coil
US8365710B2 (en) 2008-10-03 2013-02-05 Federal-Mogul Ignition Company Ignitor for air/fuel mixture and engine therewith and method of assembly thereof into a cylinder head

Also Published As

Publication number Publication date
EP0454598B1 (en) 1997-02-05
FR2661216B1 (en) 1992-08-14
DE69124540T2 (en) 1997-06-12
DE69124540D1 (en) 1997-03-20
ES2099742T3 (en) 1997-06-01
FR2661216A1 (en) 1991-10-25

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