EP0918930B1 - Zündspule - Google Patents

Zündspule Download PDF

Info

Publication number
EP0918930B1
EP0918930B1 EP97934571A EP97934571A EP0918930B1 EP 0918930 B1 EP0918930 B1 EP 0918930B1 EP 97934571 A EP97934571 A EP 97934571A EP 97934571 A EP97934571 A EP 97934571A EP 0918930 B1 EP0918930 B1 EP 0918930B1
Authority
EP
European Patent Office
Prior art keywords
casing
primary winding
spark plug
flux return
secondary winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97934571A
Other languages
English (en)
French (fr)
Other versions
EP0918930A1 (de
Inventor
Pierre Heritier-Best
Olivier Metzelard
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.)
Johnson Controls Automotive Electronics SAS
Original Assignee
Johnson Controls Automotive Electronics SAS
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 Johnson Controls Automotive Electronics SAS filed Critical Johnson Controls Automotive Electronics SAS
Publication of EP0918930A1 publication Critical patent/EP0918930A1/de
Application granted granted Critical
Publication of EP0918930B1 publication Critical patent/EP0918930B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • H01F2038/122—Ignition, e.g. for IC engines with rod-shaped core

Definitions

  • the present invention relates to an ignition coil, of the type intended to be mounted on a spark plug for the individual electrical supply of this spark plug.
  • Such coils are known comprising a magnetic core, a tubular secondary coil inside which the core is disposed and on which the secondary wire is wound, this assembly being placed in the primary coil on which the primary wire is wound.
  • a split tubular metal frame to avoid eddy currents, is placed around the assembly to ensure the return of the magnetic flux and a plastic casing encloses the whole.
  • the radial distance between primary and secondary is as large as possible. In fact, when this distance increases, the capacity of the secondary decreases and the breakdown voltage increases. In addition, for the case where, due to thermal shocks that the spark plug could undergo, micro-cracks would occur, it is advantageous to increase the breakdown path of the arc.
  • the present invention aims to overcome these drawbacks.
  • an ignition coil of the type intended to be mounted on a spark plug for the individual electrical supply of this spark plug, comprising an internal secondary winding, an external primary winding, a return armature. flow and a housing, characterized in that said housing surrounds only the secondary winding, the primary winding being wound on the housing outside of the latter, and being itself surrounded by the armature of flow return.
  • the housing can therefore be thick and therefore much easier to manufacture. In addition, it participates in the insulation and greatly limits the risks of arcing between the high-voltage output and the primary winding.
  • the housing is in the form of a member of revolution, the outer surface of which comprises a first annular recess to receive the flow return armature, and a second annular recess, included in the first axially and deeper radially, to receive the primary winding.
  • the coil shown in the figures comprises, in a known manner, a coil 1 of secondary winding, on which the secondary wire 2 is wound.
  • This secondary wire is electrically connected to a high voltage output 3.
  • the housing 4 according to the invention is arranged around the secondary winding.
  • This box is tubular and the secondary assembly is arranged inside
  • the housing 4, made of molded plastic material is of revolution and essentially comprises a body 4 'and an extension 4 "surrounding the high voltage outlet 3.
  • the body 4' is composed of a central cylindrical part 5, of an upper end flange 6 and a lower flange 7 separating part 5 of the extension 4 ".
  • the cylindrical part 5 comprises two annular recesses in steps.
  • the first 8 receives the flow return armature 9, consisting of a rolled sheet metal split along one of its generators. Included in this first recess, a second recess 10 receives the primary winding between its bottom and the frame 9.
  • the housing 4 is therefore located, according to the invention, between the two windings.
  • the coil comprises, at its upper part, a connector 20 for supplying the primary winding, and at its lower part, a nozzle 21 ensuring sealing on the spark plug.
  • a connector 20 for supplying the primary winding at its lower part, a nozzle 21 ensuring sealing on the spark plug.
  • Other waterproof terminations are possible.
  • the housing 4 is directly molded onto the secondary winding, optionally coated with a retractable sheath coated or not with glue on the inside. This avoids the presence of air, which has the effect of eliminating the high-voltage aromas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)

Claims (2)

  1. Zündspule, die für die Montage an einer Zündkerze für die individuelle Stromversorgung dieser Zündkerze bestimmt ist, bestehend aus einer inneren Sekundärwicklung (2), einer äußeren Primärwicklung, einer Flussrücklauf-Armatur (9) und einem Gehäuse (4), dadurch gekennzeichnet, dass das besagte Gehäuse nur die Sekundärwicklung umgibt, wobei die Primärwicklung außen am Gehäuse gewickelt ist und ihrerseits von der Flussrücklauf-Armatur umgeben wird.
  2. Spule nach Anspruch 1, bei der das Gehäuse aus einem Rotationsorgan besteht, dessen Außenfläche eine erste ringförmige Verstärkung (8) für die Aufnahme der Flussrücklauf-Armatur aufweist, sowie eine zweite ringförmige Verstärkung (10), die axial in der ersten eingeschlossen und radial tiefer ist, um die Primärwicklung aufzunehmen.
EP97934571A 1996-07-17 1997-07-16 Zündspule Expired - Lifetime EP0918930B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9608936 1996-07-17
FR9608936A FR2751379B1 (fr) 1996-07-17 1996-07-17 Bobine d'allumage
PCT/FR1997/001318 WO1998003791A1 (fr) 1996-07-17 1997-07-16 Bobine d'allumage

Publications (2)

Publication Number Publication Date
EP0918930A1 EP0918930A1 (de) 1999-06-02
EP0918930B1 true EP0918930B1 (de) 2003-09-10

Family

ID=9494139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97934571A Expired - Lifetime EP0918930B1 (de) 1996-07-17 1997-07-16 Zündspule

Country Status (12)

Country Link
US (1) US6417752B1 (de)
EP (1) EP0918930B1 (de)
JP (1) JP4028893B2 (de)
KR (1) KR100517655B1 (de)
AT (1) ATE249579T1 (de)
AU (1) AU3772997A (de)
BR (1) BR9710374A (de)
DE (1) DE69724794T2 (de)
EA (1) EA001044B1 (de)
ES (1) ES2206736T3 (de)
FR (1) FR2751379B1 (de)
WO (1) WO1998003791A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6977574B1 (en) * 1997-02-14 2005-12-20 Denso Corporation Stick-type ignition coil having improved structure against crack or dielectric discharge
FR2778490B1 (fr) * 1998-05-11 2000-07-28 Sagem Bobine d'allumage pour moteur a combustion interne
US20030026783A1 (en) * 2001-08-03 2003-02-06 Amine Abina Method of modulating neutralizing antibodies formation in mammals, and uses thereof in gene therapy, animal transgenesis and in functional inactivation of an endogenous proteins
JP4042045B2 (ja) * 2002-02-08 2008-02-06 株式会社デンソー 内燃機関用点火コイル
WO2004034427A2 (en) 2002-10-08 2004-04-22 Honeywell International Inc. Semiconductor packages, lead-containing solders and anodes and methods of removing alpha-emitters from materials
JP2004200656A (ja) * 2002-12-05 2004-07-15 Denso Corp 点火コイル
JP2005072547A (ja) * 2002-12-05 2005-03-17 Denso Corp 点火コイルおよびその製造方法
JP4428442B2 (ja) 2007-11-08 2010-03-10 トヨタ自動車株式会社 火花点火式内燃機関
US10107251B2 (en) 2016-07-27 2018-10-23 Marshall Electric Corp. Ignition coil having a winding form
US11380479B2 (en) 2019-06-13 2022-07-05 Marshall Electric Corp. High voltage ignition coil with improved insulating characteristics

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1302308A (en) * 1918-05-31 1919-04-29 Connecticut Telephone & Elec Spark-coil for ignition.
CH286238A (fr) * 1950-02-28 1952-10-15 Esswein Jean Bobine d'allumage.
IT212350Z2 (it) * 1987-12-14 1989-07-04 Magneti Marelli Spa Bobina di accensione particolarmente per motori da competizione
JP2995763B2 (ja) * 1989-11-10 1999-12-27 株式会社デンソー 点火コイル
EP0663526B1 (de) * 1994-01-12 2010-03-31 Denso Corporation Zündsystem einer inneren Brennkraftmaschine
JPH08213258A (ja) * 1994-12-06 1996-08-20 Nippondenso Co Ltd 内燃機関用点火コイル
DE69610742T2 (de) * 1995-06-19 2001-06-13 Denso Corp., Kariya Elektromagnetspule
US5870012A (en) * 1995-12-27 1999-02-09 Toyo Denso Kabushiki Kaisha Engine ignition coil device

Also Published As

Publication number Publication date
FR2751379A1 (fr) 1998-01-23
DE69724794D1 (de) 2003-10-16
ES2206736T3 (es) 2004-05-16
DE69724794T2 (de) 2004-08-05
WO1998003791A1 (fr) 1998-01-29
EA001044B1 (ru) 2000-08-28
KR20000067883A (ko) 2000-11-25
EA199900126A1 (ru) 2000-04-24
US6417752B1 (en) 2002-07-09
JP4028893B2 (ja) 2007-12-26
ATE249579T1 (de) 2003-09-15
EP0918930A1 (de) 1999-06-02
FR2751379B1 (fr) 1998-10-09
JP2000516034A (ja) 2000-11-28
AU3772997A (en) 1998-02-10
KR100517655B1 (ko) 2005-09-29
BR9710374A (pt) 1999-08-17

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