EP0340083B1 - Bobine d'allumage pour l'allumage des moteurs à combustion interne de véhicules automobiles, et son procédé de fabrication - Google Patents

Bobine d'allumage pour l'allumage des moteurs à combustion interne de véhicules automobiles, et son procédé de fabrication Download PDF

Info

Publication number
EP0340083B1
EP0340083B1 EP19890401123 EP89401123A EP0340083B1 EP 0340083 B1 EP0340083 B1 EP 0340083B1 EP 19890401123 EP19890401123 EP 19890401123 EP 89401123 A EP89401123 A EP 89401123A EP 0340083 B1 EP0340083 B1 EP 0340083B1
Authority
EP
European Patent Office
Prior art keywords
housing
casing
ignition coil
magnetic circuit
grains
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19890401123
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0340083A1 (fr
Inventor
Pierre Heritier-Best
Jean-Marie Autuche
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.)
Sagem SA
Original Assignee
Sagem Allumage 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.)
Filing date
Publication date
Application filed by Sagem Allumage SA filed Critical Sagem Allumage SA
Publication of EP0340083A1 publication Critical patent/EP0340083A1/fr
Application granted granted Critical
Publication of EP0340083B1 publication Critical patent/EP0340083B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F02P7/021—Mechanical distributors
    • F02P7/026—Distributors combined with other ignition devices, e.g. coils, fuel-injectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means

Definitions

  • the present invention relates to ignition coils for the ignition of internal combustion engines of motor vehicles, and its manufacturing method.
  • Such known ignition coils can, for example, consist of a closed magnetic circuit comprising a central core in the form of an "I”, and two return branches of the magnetic flux in the form of a "C" arranged at 180 ° from on either side of the central core.
  • the central core and the return branches of the flow are produced by a stack of cut sheets mechanically linked together.
  • a primary winding equipped with two terminals connected respectively to each end of said winding, and a secondary winding equipped with a high-voltage output pin, are arranged coaxially around the central core and between the flux return branches.
  • the assembly is inserted into a housing before pouring a polymerizing synthetic resin therein which will isolate and secure the various elements of the coil, leaving only the connection terminals of the primary circuit and the tip of the high output pin visible. voltage.
  • the present invention proposes to overcome these drawbacks by proposing an ignition coil provided with a magnetic circuit of simple construction, inexpensive, and having better efficiency.
  • An ignition coil 1, shown in Figures 1 to 3 has two coaxially arranged windings, one primary 2 and the other secondary 3.
  • the secondary winding 3 has a pin 31, welded to one end of the winding secondary 3 by a bent part 30, and ends at its end by a high-voltage output 32.
  • the pin 31 is fixed on a spool (not shown) carrying the windings 2 and 3.
  • Each of the ends 22 of the primary winding 2 is connected to a plug 21 (only one being shown) which are also fixed to the spool.
  • the internal housing 4 comprises a first annular housing 41 comprising a bottom 42 and, in its axial part, a second tubular housing 43 with a height greater than the height of the first annular housing 41.
  • the first housing annular 41 and the second tubular housing 43 are in communication by an opening 44 which extends over the entire height of said first housing 41, and are connected, on the one hand, by walls 44 a delimiting the opening 44 and, d on the other hand, by bridges 45 provided for this purpose on the bottom 42 of the internal housing 4.
  • the primary 2 and secondary 3 windings are inserted into the first housing 41.
  • the bent part 30 of the pin 31 passes through the opening 44.
  • the windings 2 and 3 are held inside the first housing 41 so that a substantially constant space remains between said windings 2 and 3 and the internal walls of said first housing 41 by means not shown, such as described for example in French patent application FR-A-2,593,962.
  • a cover 5 is then placed on the internal housing 4.
  • This annular cover 5 makes it possible to cover the first housing 41, and by its appendage 51, also makes it possible to cover the opening 44 and the part 44 b of the opening 44 extending over the upper part of the second housing 43 higher than the first housing 41.
  • the cover 5 also has a box 52 inside which appear the plugs 21 of the primary winding 2 in order to produce a connector.
  • the internal housing 4 thus equipped is inserted into a second housing 6 produced by molding plastic material in the form of a pot and with a diameter greater than that of said internal housing 4.
  • a plurality of shims 46 are formed on the lower part of the internal housing 4 and consist of radial lugs 46 a and lugs 46 b directed vertically.
  • the length of the vertical legs 46 b is equal to the length of the part 43 a of the second tubular housing 43 which opens out from the bottom 42 of the housing 4.
  • These shims 46 serve to position the internal housing 4 in the second housing 6 so as to delimit a space of substantially constant section between the walls of said internal boxes 4 and the second box 6.
  • particles of magnetizable material such as pure iron are poured into the free space by the boxes 4 and 6 by vibrating the assembly so that said particles fill said space.
  • the space 47 situated between the two annular 41 and tubular 43 housings is in communication with the outside of the internal box 4, that is to say with the inside of the second box 6 thanks to the windows 48 delimited by the bridges 45 connecting the two housings 41 and 43.
  • the particles of magnetizable material thus constitute a magnetic circuit, the central core 7 being housed in space 47, while the flux return circuit 8 is located in space 49 between the two boxes 4 and 6.
  • the primary winding 2 is supplied for a few seconds.
  • the power supply has the effect of orienting the iron particles constituting the magnetic circuit 7,8 which, therefore, will have a better efficiency.
  • an air gap is made in part of the circuit, for example in the central core in order to avoid temporary or permanent saturation of said magnetic circuit.
  • the air gap consists of the sum of the spaces between each of the grains constituting the magnetic circuit.
  • a synthetic polymerizing resin 60 is poured inside the second box 6 impregnating the particles of material, and penetrating into the free space, and inside the internal box 4 passing through the upper opening of the tubular housing 43 and through the opening 44 to impregnate the windings 2 and 3.
  • a chimney 61 is made of material by overmolding around the spindle 31 leaving only the high-voltage output 32 to appear.
  • a permanent magnet 9 of annular shape is arranged in the magnetic circuit 7,8 so as to cut the path followed by the magnetic flux.
  • the magnet permanent 9 can be placed in the central core and rest on bridges 45.
  • a housing 100 advantageously produced for heat dissipation by molding d 'non-magnetic metal alloy such as aluminum, has four pots 106 arranged in line and each capable of receiving a coil 101 according to the invention. Cooling fins 102 can be obtained in one piece with the housing 100 and between each pot 106 in order to further improve the heat dissipation.
  • a channel 103 is formed in the housing 100 and allows the passage of the connection wires of the primary circuit up to a connector 104. Such an assembly is particularly suitable for being placed near the cylinders of the engine which the coils light up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP19890401123 1988-04-28 1989-04-21 Bobine d'allumage pour l'allumage des moteurs à combustion interne de véhicules automobiles, et son procédé de fabrication Expired - Lifetime EP0340083B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805673A FR2630782B1 (fr) 1988-04-28 1988-04-28 Bobine d'allumage pour l'allumage des moteurs a combustion interne de vehicules automobiles, et son procede de fabrication
FR8805673 1988-04-28

Publications (2)

Publication Number Publication Date
EP0340083A1 EP0340083A1 (fr) 1989-11-02
EP0340083B1 true EP0340083B1 (fr) 1994-07-13

Family

ID=9365781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890401123 Expired - Lifetime EP0340083B1 (fr) 1988-04-28 1989-04-21 Bobine d'allumage pour l'allumage des moteurs à combustion interne de véhicules automobiles, et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP0340083B1 (ja)
JP (1) JP3011943B2 (ja)
DE (1) DE68916690T2 (ja)
FR (1) FR2630782B1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1246068B (it) * 1991-05-03 1994-11-07 Magneti Marelli Spa Gruppo di accensione a bobine di tipo plug-top per un motore a combustione interna
JP3070268B2 (ja) * 1992-07-16 2000-07-31 住友電装株式会社 継手構造
US5547387A (en) * 1993-08-05 1996-08-20 Sumitomo Wiring Systems, Ltd. Joint construction for ignition system
JP3951205B2 (ja) * 1998-05-19 2007-08-01 株式会社デンソー パワーステアリング方法およびパワーステアリング装置
RU2189490C1 (ru) * 2000-12-18 2002-09-20 Акционерное общество закрытого типа Завод автотракторной электроаппаратуры Катушка зажигания, обмоточный узел катушки зажигания и проходной конденсатор
DE102006037169A1 (de) 2006-08-09 2008-02-14 Robert Bosch Gmbh Verfahren zur Herstellung einer Spule, insbesondere einer Zündspule für ein Kraftfahrzeug
JP5157956B2 (ja) * 2009-02-25 2013-03-06 株式会社デンソー リアクトル

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701865A (en) * 1952-05-31 1955-02-08 Essex Wire Corp Ignition coil
FR1416509A (fr) * 1964-09-23 1965-11-05 Parisienne De Const Electro Me Circuit magnétique moulé
DE1935978A1 (de) * 1968-07-19 1970-02-12 Pal Magneton N Zuendspule fuer Motoren mit Fremdzuendung
US3546647A (en) * 1969-08-08 1970-12-08 Eltra Corp Electric coil construction
FR2593962B1 (fr) * 1986-01-24 1989-03-03 Ducellier & Cie Bobine d'allumage a circuit ferme

Also Published As

Publication number Publication date
JPH01316915A (ja) 1989-12-21
DE68916690T2 (de) 1995-04-06
DE68916690D1 (de) 1994-08-18
JP3011943B2 (ja) 2000-02-21
FR2630782B1 (fr) 1993-05-14
EP0340083A1 (fr) 1989-11-02
FR2630782A1 (fr) 1989-11-03

Similar Documents

Publication Publication Date Title
EP0313514B1 (fr) Procédé de fabrication d'un stator sans rainures pour moteur électrique et moteur électrique comprenant un stator fabriqué selon le procédé
FR2791806A1 (fr) Bobine d'allumage pour moteur a combustion interne
EP0403317B1 (fr) Stator de moteur électrique
EP0283354B1 (fr) Transformateur électrique, en particulier bobine d'allumage pour moteur à combustion interne
EP0340083A1 (fr) Bobine d'allumage pour l'allumage des moteurs à combustion interne de véhicules automobiles, et son procédé de fabrication
EP4331081A1 (fr) Stator pour machine à flux axial et procédé de fabrication d'un tel stator
EP0395512B1 (fr) Bobine d'allumage, en particulier pour moteur à combustion interne de véhicule automobile, et moyens de maintien de l'ensemble primaire dans le secondaire
EP0395511B1 (fr) Dispositif de fixation d'une bobine d'allumage, en particulier pour moteur à combustion interne de véhicule automobile
EP4022742A1 (fr) Machine à bobinage toroïdal
EP0230811B1 (fr) Bobine d'allumage à circuit fermé
FR2887086A1 (fr) Machine electrique rotative equipee d'un noyau de stator concu pour assurer des performances de la machine
EP0034955B1 (fr) Bobine d'allumage pour moteurs à combustion interne
EP0258362A1 (fr) Transformateur haute tension
EP2973952A1 (fr) Rotor de machine électrique muni d'au moins une frette de maintien des chignons du bobinage et machine électrique correspondante
EP3549237B1 (fr) Rotor pour machine électrique tournante
WO2021099533A1 (fr) Machine électrique tournante avec blocage axial du stator
EP0072266A1 (fr) Procédé d'obtention d'une bobine à circuit magnétique fermé et à aimant permanent pour l'allumage de moteurs à combustion
EP0418137B1 (fr) Bobine d'allumage, en particulier pour moteur à combustion interne de véhicule automobile
FR2593962A1 (fr) Bobine d'allumage a circuit ferme
WO2007074289A2 (fr) Dispositif de borne de connexion electrique notamment de machine electrique tournante et procede de realisation d'un tel dispositif de borne
FR2577711A1 (fr) Bobine d'allumage pour moteurs a combustion interne
EP0782240B1 (fr) Machine électrique tournante avec mise à l'air
FR2611976A1 (fr) Transformateur electrique, en particulier bobine d'allumage pour moteur a combustion interne
FR2646552A1 (fr) Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile, et moyens de calibrage de l'entrefer du circuit magnetique
FR3054743B1 (fr) Bobine pour machine electrique tournante

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19891107

17Q First examination report despatched

Effective date: 19911115

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAGEM ALLUMAGE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

REF Corresponds to:

Ref document number: 68916690

Country of ref document: DE

Date of ref document: 19940818

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940920

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080411

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080419

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080408

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090420