GB1500484A - Ignition coils - Google Patents

Ignition coils

Info

Publication number
GB1500484A
GB1500484A GB5380773A GB5380773A GB1500484A GB 1500484 A GB1500484 A GB 1500484A GB 5380773 A GB5380773 A GB 5380773A GB 5380773 A GB5380773 A GB 5380773A GB 1500484 A GB1500484 A GB 1500484A
Authority
GB
United Kingdom
Prior art keywords
ferrite
iron
layers
winding
surrounded
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
Application number
GB5380773A
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.)
WALTHEW A
Original Assignee
WALTHEW A
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 WALTHEW A filed Critical WALTHEW A
Priority to GB5380773A priority Critical patent/GB1500484A/en
Publication of GB1500484A publication Critical patent/GB1500484A/en
Expired 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
    • 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
    • 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
    • H01F2038/125—Ignition, e.g. for IC engines with oil insulation

Landscapes

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

Abstract

1500484 Ignition coils A WALTHEW 19 Feb 1975 [20 Nov 1973] 53807/73 Heading HIT An ignition coil has a magnetic core winding leg formed from two different magnetic materials. As shown in Fig. 3 the leg comprises a ferrite rod 3 surrounded by soft iron rods 4, but other iron/ferrite and ferrite/ferrite arrangements are disclosed. The core is surrounded by an insulating coil former 5 which is splined or corrugated to provide passages for cooling oil, and which bears a secondary winding 7 over which is a primary winding 6. The primary winding may be of strip or paired conductors and its layers may be separated by layers of PTFE having ribs 8 to provide further cooling passages. The secondary winding may be layers of wire interspersed with glass fibre kraft paper, or it may be a printed circuit. The magnetic path may be completed by iron or alloyed iron end plates and semicylindrical members (Figs. 5 and 6, not shown). Details of the manner in which the windings are connected to terminals 12, 16 are given.
GB5380773A 1973-11-20 1973-11-20 Ignition coils Expired GB1500484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5380773A GB1500484A (en) 1973-11-20 1973-11-20 Ignition coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5380773A GB1500484A (en) 1973-11-20 1973-11-20 Ignition coils

Publications (1)

Publication Number Publication Date
GB1500484A true GB1500484A (en) 1978-02-08

Family

ID=10469048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5380773A Expired GB1500484A (en) 1973-11-20 1973-11-20 Ignition coils

Country Status (1)

Country Link
GB (1) GB1500484A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412678A1 (en) * 1989-08-10 1991-02-13 General Motors Corporation Ignition coil
EP0898289A2 (en) * 1997-08-07 1999-02-24 Sumitomo Wiring Systems, Ltd. Ignition coil having a toroidal magnet
EP1758134A2 (en) * 2005-08-26 2007-02-28 Robert Bosch Gmbh Ignition coil with rod-shaped core
WO2014028147A1 (en) * 2012-08-14 2014-02-20 Siemens Energy, Inc. Use of alumina paper for strain relief and electrical insulation in high-temperature coil windings

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412678A1 (en) * 1989-08-10 1991-02-13 General Motors Corporation Ignition coil
EP0898289A2 (en) * 1997-08-07 1999-02-24 Sumitomo Wiring Systems, Ltd. Ignition coil having a toroidal magnet
EP0898289A3 (en) * 1997-08-07 2000-09-27 Sumitomo Wiring Systems, Ltd. Ignition coil having a toroidal magnet
EP1758134A2 (en) * 2005-08-26 2007-02-28 Robert Bosch Gmbh Ignition coil with rod-shaped core
EP1758134A3 (en) * 2005-08-26 2009-03-11 Robert Bosch Gmbh Ignition coil with rod-shaped core
WO2014028147A1 (en) * 2012-08-14 2014-02-20 Siemens Energy, Inc. Use of alumina paper for strain relief and electrical insulation in high-temperature coil windings
US9520224B2 (en) 2012-08-14 2016-12-13 Siemens Energy, Inc. Use of alumina paper for strain relief and electrical insulation in high-temperature coil windings

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee