FR2655386A1 - Device for removably fixing an assembly consisting of an ignition coil and a spark plug to an engine cylinder head - Google Patents

Device for removably fixing an assembly consisting of an ignition coil and a spark plug to an engine cylinder head Download PDF

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Publication number
FR2655386A1
FR2655386A1 FR8915919A FR8915919A FR2655386A1 FR 2655386 A1 FR2655386 A1 FR 2655386A1 FR 8915919 A FR8915919 A FR 8915919A FR 8915919 A FR8915919 A FR 8915919A FR 2655386 A1 FR2655386 A1 FR 2655386A1
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FR
France
Prior art keywords
cylinder head
ignition coil
spark plug
coil
branch
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
FR8915919A
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French (fr)
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FR2655386B1 (en
Inventor
Desportes Dominique
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR8915919A priority Critical patent/FR2655386B1/en
Publication of FR2655386A1 publication Critical patent/FR2655386A1/en
Application granted granted Critical
Publication of FR2655386B1 publication Critical patent/FR2655386B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • 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
    • H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
    • 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

Abstract

The present invention relates to a device for removably fixing an assembly consisting of an ignition coil and a spark plug to an engine cylinder head. This device essentially comprises two elastically-deformable Z-shaped clips (8) which are fixed (9) via one (8a) of their branches to the cylinder head (C) or the rocker cover of the engine, and the part (11) of which, for connecting the median branch (8c) of the Z to the other branch (8b) of this Z can bear elastically on the ignition coil (1). This device applies particularly to removably fixing each ignition coil associated with a spark plug connected to one of the cylinders of a four-cylinder engine, for example.

Description

La présente invention a essentiellement pour objet un dispositif de fixation amovible sur une culasse de moteur d'un ensemble formé par une bobine d'allumage associée à une bougie. The present invention essentially relates to a removable fixing device on an engine cylinder head of an assembly formed by an ignition coil associated with a spark plug.

Comme on le sait, un tel ensemble peut équiper chaque cylindre du moteur et permet de s'affranchir du distributeur d'allumage. Il est particulièrement adapté au cas où la bougie occupe une position centrale dans le cylindre, comme c'est le cas dans les moteurs multisoupapes où les soupapes sont disposées autour de la bougie. As is known, such an assembly can equip each cylinder of the engine and makes it possible to dispense with the ignition distributor. It is particularly suitable for the case where the spark plug occupies a central position in the cylinder, as is the case in multi-valve engines where the valves are arranged around the spark plug.

Toutefois, un tel ensemble, appelé parfois "monobobine", est très lourd et doit être fixé solidement dans la culasse pour éviter son déplacement qui nuirait à un bon contact électrique et provoquerait des bruits et des vibrations. De plus, il est souhaitable que de tels ensembles bobine-bougie soient fixés de manière élastique sur la culasse pour créer un amortissement. Or, jusqu'à présent, aucune solution vraiment satisfaisante de fixation d'un ensemble bobine d'allumage-bougie n'a été proposée pour parvenir à ces buts. However, such an assembly, sometimes called "single coil", is very heavy and must be fixed securely in the cylinder head to avoid its displacement which would interfere with good electrical contact and cause noise and vibration. In addition, it is desirable that such coil-spark plug assemblies be resiliently attached to the cylinder head to create damping. However, until now, no truly satisfactory solution for fixing an ignition coil-spark plug assembly has been proposed to achieve these goals.

La présente invention a donc pour but de proposer un système de fixation amovible d'un ensemble bobine-bougie sur une culasse, qui est satisfaisant sur tous les plans. The present invention therefore aims to provide a removable fixing system of a coil-spark plug assembly on a cylinder head, which is satisfactory in all respects.

A cet effet, l'invention a pour objet un dispositif de fixation amovible sur une culasse de moteur d'au moins un ensemble formé par une bobine d'allumage associée à une bougie, caractérisé en ce qu'il comprend au moins une agrafe élastiquement déformable qui est fixée par une extrémité sur la fonderie de la culasse ou du couvercle de culasse et dont l'autre extrémité coopère élastiquement avec la bobine d'allumage pour maintenir ledit ensemble sur la culasse.  To this end, the subject of the invention is a device for removable attachment to an engine cylinder head of at least one assembly formed by an ignition coil associated with a spark plug, characterized in that it comprises at least one elastic clip deformable which is fixed by one end to the foundry of the cylinder head or of the cylinder head cover and the other end of which cooperates elastically with the ignition coil to hold said assembly on the cylinder head.

Selon une autre caractéristique de ce dispositif, l'agrafe précitée présente sensiblement la forme d'un Z dont l'une des branches est fixée, par exemple rivetée, sur la fonderie de la culasse ou du couvercle de culasse et dont la partie raccordant la branche médiane du Z à 1 'autre branche de ce Z peut prendre élastiquement appui sur la bobine d'allumage. According to another characteristic of this device, the aforementioned clip has substantially the shape of a Z, one of the branches of which is fixed, for example riveted, to the foundry of the cylinder head or of the cylinder head cover and the part of which connects the middle branch of the Z to one other branch of this Z can be supported elastically on the ignition coil.

L'autre branche précitée du Z peut coopérer élastiquement avec des nervures appartenant à un carter ou analogue coiffant et protégeant la bobine d'allumage tout en maintenant cette bobine verrouillée par l'agrafe. The other aforementioned branch of the Z can cooperate elastically with ribs belonging to a casing or the like covering and protecting the ignition coil while keeping this coil locked by the clip.

On précisera encore ici que le dispositif de cette invention comprend au moins un support amortisseur interposé entre la fonderie de culasse ou du couvercle de culasse et la bobine d'allumage. It will also be specified here that the device of this invention comprises at least one damping support interposed between the cylinder head casting or of the cylinder head cover and the ignition coil.

Mais d'autres caractéristiques et avantages de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels
- la figure 1 est une vue en élévation d'un ensemble formé par une bobine d'allumage associée à une bougie, monté sur une culasse visible en coupe, ladite figure étant en réalité une demi-vue en position montée de l'ensemble, et une demi-vue en position démontée de cet ensemble ; et
- la figure 2 est une vue similaire à la figure 1 mais illustrant une variante de montage de l'ensemble bobine-bougie avec carter coiffant cet ensemble.However, other characteristics and advantages of the invention will appear better in the detailed description which follows and refers to the appended drawings given solely by way of example and in which
FIG. 1 is an elevation view of an assembly formed by an ignition coil associated with a spark plug, mounted on a cylinder head visible in section, said figure being in reality a half-view in the assembled position of the assembly, and a half view in the disassembled position of this assembly; and
- Figure 2 is a view similar to Figure 1 but illustrating an alternative mounting of the coil-spark plug assembly with housing covering this assembly.

En se reportant aux figures, on voit un ensemble E, appelé souvent monobobine, comprenant une bobine d'allumage 1 montée sur une douille 2 connectée à l'un des pôles du secondaire de la bobine et qui est engagée sur l'embout de connexion 3 d'une bougie 4 connectée au cylindre d'un moteur (non représenté), ledit ensemble E étant monté dans une ouverture 5 ménagée dans la culasse C du moteur, elle-même coiffée par un couvercle de culasse 6. Referring to the figures, we see an assembly E, often called single coil, comprising an ignition coil 1 mounted on a socket 2 connected to one of the poles of the secondary of the coil and which is engaged on the connection end piece 3 of a spark plug 4 connected to the cylinder of an engine (not shown), said assembly E being mounted in an opening 5 formed in the cylinder head C of the engine, itself capped by a cylinder head cover 6.

La bobine 1 comporte un collet 7 formé par l'empilage des tôles du transformateur de ladite bobine. The coil 1 comprises a collar 7 formed by the stacking of the sheets of the transformer of said coil.

Conformément à l'invention, la bobine 1 est fixée sur la culasse C par deux agrafes 8 élastiquement déformables présentant sensiblement la forme d'un Z, comme on le voit bien sur les figures. According to the invention, the coil 1 is fixed to the yoke C by two elastically deformable staples 8 having substantially the shape of a Z, as can be seen in the figures.

L'une 8a des branches de chaque Z est fixée, par exemple rivetée, comme on le voit en 9, sur la fonderie de culasse ou du couvercle de culasse, qui a été spécialement aménagée à cet effet et comporte un rebord 10 sur lequel sont rivetées les agrafes 8. One 8a of the branches of each Z is fixed, for example riveted, as seen in 9, on the cylinder head foundry or the cylinder head cover, which has been specially fitted for this purpose and has a flange 10 on which are riveted staples 8.

L'autre branche 8b de chaque Z est raccordée à la branche médiane 8c du Z par une partie arquée 11 qui peut prendre élastiquement appui sur la partie formant collet 7 de la bobine d'allumage 1. The other branch 8b of each Z is connected to the middle branch 8c of the Z by an arcuate part 11 which can be resiliently supported on the collar part 7 of the ignition coil 1.

Ainsi, comme on le comprend, par simple pression dans le plan horizontal de la branche 8b de chaque agrafe 8, on pourra facilement réaliser, sans outillage particulier, le montage ou le démontage de la bobine d'allumage 1. Thus, as is understood, by simple pressure in the horizontal plane of the branch 8b of each clip 8, it will be easy to carry out, without special tools, the mounting or dismounting of the ignition coil 1.

On a montré en 12 sur les figures un support-amortisseur interposé entre la fonderie de culasse et la bobine d'allumage 1, ce support-amortisseur étant efficace contre les bruits et/ou vibrations engendrés par le moteur. 12 has been shown in the figures a shock absorber support interposed between the cylinder head foundry and the ignition coil 1, this shock absorber support being effective against noise and / or vibration generated by the engine.

On observera encore ici que les agrafes 8 permettront le démontage et le remontage d'une seule bobine, étant entendu que le moteur comportera autant de bobines avec bougies associées 4, qu'il y a de cylindres. It will also be observed here that the clips 8 will allow the disassembly and reassembly of a single coil, it being understood that the engine will comprise as many coils with associated spark plugs 4, as there are cylinders.

En se reportant à la figure 2, on voit que le couvercle 6 de la culasse C du moteur peut être coiffé par un carter ou analogue 13 comportant des nervures 14 coopérant, en position montée, avec les branches 8b des agrafes 8 pour empêcher tout débattement horizontal desdites branches, de sorte qu'on obtient ainsi une sécurité de maintien ou de verrouillage de la bobine 1 sur la culasse C, étant entendu que le carter amovible 13 constitue une protection pour ladite bobine. Referring to Figure 2, we see that the cover 6 of the cylinder head C of the engine can be capped by a housing or the like 13 having ribs 14 cooperating, in the assembled position, with the branches 8b of the staples 8 to prevent any movement horizontal of said branches, so that a security is maintained or locking the coil 1 on the cylinder head C, it being understood that the removable casing 13 constitutes protection for said coil.

On a donc réalisé suivant l'invention une fixation amovible pour bobine associée à une bougie qui est d'une conception mécanique remarquablement simple et qui permet le démontage, sans outillage spécial, de cette bobine. A removable fastener for the coil associated with a spark plug is therefore produced according to the invention, which is of remarkably simple mechanical design and which allows disassembly, without special tools, of this coil.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Of course, the invention is in no way limited to the embodiment described and illustrated, which has been given only by way of example.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit.  On the contrary, the invention includes all the technical equivalents of the means described and their combinations if these are carried out according to the spirit.

Claims (4)

REVENDICATIONS 1. Dispositif de fixation amovible sur une culasse de moteur d'au moins un ensemble formé par une bobine d'allumage (1) associée à une bougie (4), caractérisé en ce qu'il comprend au moins une agrafe élastiquement déformable (8) qui est fixée par une extrémité sur la fonderie de la culasse (C) ou du couvercle de culasse (6) et dont l'autre extrémité coopère élastiquement avec la bobine d'allumage (1) pour maintenir ledit ensemble sur la culasse. 1. Removable fixing device on an engine cylinder head of at least one assembly formed by an ignition coil (1) associated with a spark plug (4), characterized in that it comprises at least one elastically deformable clip (8 ) which is fixed by one end to the foundry of the cylinder head (C) or of the cylinder head cover (6) and the other end of which cooperates elastically with the ignition coil (1) to hold said assembly on the cylinder head. 2. Dispositif selon la revendication 1, caractérisé en ce que l'agrafe précitée (8) présente sensiblement la forme d'un Z dont l'une (8a) des branches est fixée, par exemple rivetée (9), sur la fonderie de la culasse ou du couvercle de culasse et dont la partie (11) raccordant la branche médiane (8c) du Z à l'autre branche (8b) du Z peut prendre élastiquement appui sur la bobine d'allumage (1). 2. Device according to claim 1, characterized in that the aforementioned clip (8) has substantially the shape of a Z, one of which (8a) of the branches is fixed, for example riveted (9), on the foundry of the cylinder head or of the cylinder head cover and of which the part (11) connecting the middle branch (8c) of the Z to the other branch (8b) of the Z can be supported elastically on the ignition coil (1). 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'autre branche précitée (8b) du Z coopère élastiquement avec des nervures (14) appartenant à un carter ou analogue (13) coiffant et protégeant la bobine d'allumage (1) tout en maintenant cette bobine verrouillée par l'agrafe (8). 3. Device according to claim 1 or 2, characterized in that the other aforementioned branch (8b) of the Z cooperates elastically with ribs (14) belonging to a casing or the like (13) covering and protecting the ignition coil ( 1) while keeping this coil locked by the clip (8). 4. Dispositif selon l'une des revendications 1 à 3, caractérisé par au moins un support amortisseur (12) interposé entre la fonderie de culasse ou du couvre-culasse et la bobine d'allumage (1).  4. Device according to one of claims 1 to 3, characterized by at least one damping support (12) interposed between the cylinder head casting or the cylinder head cover and the ignition coil (1).
FR8915919A 1989-12-01 1989-12-01 DEVICE FOR REMOVABLE FIXING TO AN ENGINE CYLINDER HEAD OF AN ASSEMBLY CONSISTING OF AN IGNITION COIL AND A SPARK PLUG. Expired - Fee Related FR2655386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8915919A FR2655386B1 (en) 1989-12-01 1989-12-01 DEVICE FOR REMOVABLE FIXING TO AN ENGINE CYLINDER HEAD OF AN ASSEMBLY CONSISTING OF AN IGNITION COIL AND A SPARK PLUG.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8915919A FR2655386B1 (en) 1989-12-01 1989-12-01 DEVICE FOR REMOVABLE FIXING TO AN ENGINE CYLINDER HEAD OF AN ASSEMBLY CONSISTING OF AN IGNITION COIL AND A SPARK PLUG.

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FR2655386A1 true FR2655386A1 (en) 1991-06-07
FR2655386B1 FR2655386B1 (en) 1994-06-10

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715073A3 (en) * 1994-11-30 1997-08-13 Bayerische Motoren Werke Ag Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
EP1243780A2 (en) * 2001-03-21 2002-09-25 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine
GB2384024A (en) * 2001-12-26 2003-07-16 Visteon Global Tech Inc Removable mounting bracket, eg for mounting an ignition coil on an engine
WO2012065763A3 (en) * 2010-11-15 2012-10-18 Robert Bosch Gmbh Cover device for a spark plug shaft and optical fibre device for a laser spark plug
CN105840391A (en) * 2015-01-30 2016-08-10 博格华纳路德维希堡股份有限公司 Corona ignition device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR748200A (en) * 1932-01-02 1933-06-29 Shielding device for spark plugs of internal combustion engines
US1928520A (en) * 1930-11-28 1933-09-26 Bosch Robert Shrouding cap for sparking plugs
US2121178A (en) * 1936-09-23 1938-06-21 Sousa Manuel Spark plug
FR850420A (en) * 1938-02-19 1939-12-16 Bosch Gmbh Robert Protective cap retainer for spark plugs
US2501526A (en) * 1944-05-05 1950-03-21 Bendix Aviat Corp Cover cap fastening means
US3792694A (en) * 1972-03-30 1974-02-19 Stitt Spark Plug Co Spark plug safety shield

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928520A (en) * 1930-11-28 1933-09-26 Bosch Robert Shrouding cap for sparking plugs
FR748200A (en) * 1932-01-02 1933-06-29 Shielding device for spark plugs of internal combustion engines
US2121178A (en) * 1936-09-23 1938-06-21 Sousa Manuel Spark plug
FR850420A (en) * 1938-02-19 1939-12-16 Bosch Gmbh Robert Protective cap retainer for spark plugs
US2501526A (en) * 1944-05-05 1950-03-21 Bendix Aviat Corp Cover cap fastening means
US3792694A (en) * 1972-03-30 1974-02-19 Stitt Spark Plug Co Spark plug safety shield

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715073A3 (en) * 1994-11-30 1997-08-13 Bayerische Motoren Werke Ag Apparatus for coupling one coil per plug ignition system with a cylinder head for an internal combustion engine
EP1243780A2 (en) * 2001-03-21 2002-09-25 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine
EP1243780A3 (en) * 2001-03-21 2003-06-04 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine
GB2384024A (en) * 2001-12-26 2003-07-16 Visteon Global Tech Inc Removable mounting bracket, eg for mounting an ignition coil on an engine
GB2384024B (en) * 2001-12-26 2004-07-21 Visteon Global Tech Inc Assembly for attaching an ignition coil to a mounting surface
WO2012065763A3 (en) * 2010-11-15 2012-10-18 Robert Bosch Gmbh Cover device for a spark plug shaft and optical fibre device for a laser spark plug
CN105840391A (en) * 2015-01-30 2016-08-10 博格华纳路德维希堡股份有限公司 Corona ignition device

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