EP0878810A3 - Ignition coil for ignition systems of internal combustion engines - Google Patents

Ignition coil for ignition systems of internal combustion engines Download PDF

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Publication number
EP0878810A3
EP0878810A3 EP98108659A EP98108659A EP0878810A3 EP 0878810 A3 EP0878810 A3 EP 0878810A3 EP 98108659 A EP98108659 A EP 98108659A EP 98108659 A EP98108659 A EP 98108659A EP 0878810 A3 EP0878810 A3 EP 0878810A3
Authority
EP
European Patent Office
Prior art keywords
coil
ignition
leg
internal combustion
air gap
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.)
Withdrawn
Application number
EP98108659A
Other languages
German (de)
French (fr)
Other versions
EP0878810A2 (en
Inventor
Thomas Gross
Bernd Rothfuss
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0878810A2 publication Critical patent/EP0878810A2/en
Publication of EP0878810A3 publication Critical patent/EP0878810A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

Um bei einer Zündspule für Zündanlagen von Brennkraftmaschinen mit einer Primärspule, einer die Primärspule umgebenden Sekundärspule und einer die Spulen bis auf ihre Anschlüsse vollständig umgebenden Isolierstoffumhüllung sowie einem auf die Isolierstoffumhüllung aufgesetzten Spulenkern mit wenigstens einem in der Primärspule geführten ersten Schenkel und mit wenigstens einem über einen Jochschenkel mit dem ersten Schenkel verbundenen, an der Außenseite der Zündspule angeordneten zweiten Schenkel, der durch einen Luftspalt von der Isolierstoffumhüllung beabstandet ist, eine durch die starke Potentialdifferenz zwischen Sekundärspule und Kern bedingte Corona-Entladung in dem Luftspalt zu verhindern, wird vorgeschlagen, in dem Luftspalt zwischen dem zweiten Schenkel und der Isolierstoffumhüllung eine Folie anzuordnen, die aus einer organischen Polymer-Matrix besteht, in der ein Ferritmagnetischer Füllstoff enthalten ist.

Figure 00000001
In an ignition coil for ignition systems of internal combustion engines with a primary coil, a secondary coil surrounding the primary coil and an insulating jacket completely surrounding the coils except for their connections, as well as a coil core placed on the insulating jacket with at least one first leg guided in the primary coil and with at least one via one Yoke leg connected to the first leg, arranged on the outside of the ignition coil, the second leg, which is spaced by an air gap from the insulating jacket, to prevent a corona discharge in the air gap caused by the large potential difference between the secondary coil and the core is proposed in the Air gap between the second leg and the insulating material to arrange a film that consists of an organic polymer matrix in which a ferrite magnetic filler is contained.
Figure 00000001
EP98108659A 1997-05-15 1998-05-13 Ignition coil for ignition systems of internal combustion engines Withdrawn EP0878810A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997120334 DE19720334C2 (en) 1997-05-15 1997-05-15 Ignition coil for ignition systems of internal combustion engines
DE19720334 1997-05-15

Publications (2)

Publication Number Publication Date
EP0878810A2 EP0878810A2 (en) 1998-11-18
EP0878810A3 true EP0878810A3 (en) 1999-04-07

Family

ID=7829515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108659A Withdrawn EP0878810A3 (en) 1997-05-15 1998-05-13 Ignition coil for ignition systems of internal combustion engines

Country Status (2)

Country Link
EP (1) EP0878810A3 (en)
DE (1) DE19720334C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200156390Y1 (en) * 1996-09-21 1999-09-01 윤종용 H.v.t apparatus of microwave oven

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287761A1 (en) * 1974-10-12 1976-05-07 Bosch Gmbh Robert IGNITION COIL
JPS5857719A (en) * 1981-10-01 1983-04-06 Matsushita Electric Ind Co Ltd Transformer
JPS59119708A (en) * 1982-12-24 1984-07-11 Hotsukou Denshi Kk Shield type inductance element
JPS59195812A (en) * 1983-04-21 1984-11-07 Nippon Denso Co Ltd Ignition coil for internal combustion engine
EP0283354A1 (en) * 1987-03-04 1988-09-21 Sagem Allumage Electric transformer, particularly for an ignition coil of an internal combustion engine
DE19516448A1 (en) * 1995-05-04 1996-11-07 Siemens Matsushita Components Flexible plastics foil with magnetic characteristics e.g. for audio, image and data recording

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394331A (en) * 1966-06-02 1968-07-23 Texaco Inc Winding having a two turn conductive strip therearound
DE3433065A1 (en) * 1984-09-08 1986-03-20 Robert Bosch Gmbh, 7000 Stuttgart IGNITION COIL DETERMINED FOR THE IGNITION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2287761A1 (en) * 1974-10-12 1976-05-07 Bosch Gmbh Robert IGNITION COIL
JPS5857719A (en) * 1981-10-01 1983-04-06 Matsushita Electric Ind Co Ltd Transformer
JPS59119708A (en) * 1982-12-24 1984-07-11 Hotsukou Denshi Kk Shield type inductance element
JPS59195812A (en) * 1983-04-21 1984-11-07 Nippon Denso Co Ltd Ignition coil for internal combustion engine
EP0283354A1 (en) * 1987-03-04 1988-09-21 Sagem Allumage Electric transformer, particularly for an ignition coil of an internal combustion engine
DE19516448A1 (en) * 1995-05-04 1996-11-07 Siemens Matsushita Components Flexible plastics foil with magnetic characteristics e.g. for audio, image and data recording

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 144 (E - 183) 23 June 1983 (1983-06-23) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 239 (E - 276) 2 November 1984 (1984-11-02) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 056 (E - 302) 12 March 1985 (1985-03-12) *

Also Published As

Publication number Publication date
DE19720334A1 (en) 1998-11-26
EP0878810A2 (en) 1998-11-18
DE19720334C2 (en) 2000-04-06

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