EP0126734B1 - Zündspule für zündanlagen von brennkraftmaschinen - Google Patents

Zündspule für zündanlagen von brennkraftmaschinen Download PDF

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Publication number
EP0126734B1
EP0126734B1 EP83903378A EP83903378A EP0126734B1 EP 0126734 B1 EP0126734 B1 EP 0126734B1 EP 83903378 A EP83903378 A EP 83903378A EP 83903378 A EP83903378 A EP 83903378A EP 0126734 B1 EP0126734 B1 EP 0126734B1
Authority
EP
European Patent Office
Prior art keywords
coil
housing
ignition
coil former
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
Application number
EP83903378A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0126734A1 (de
Inventor
Paul WÖRZ
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 EP0126734A1 publication Critical patent/EP0126734A1/de
Application granted granted Critical
Publication of EP0126734B1 publication Critical patent/EP0126734B1/de
Expired 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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the invention relates to an ignition coil for ignition systems of internal combustion engines according to the preamble of claim 1.
  • ignition coils the insulation distance between the high-voltage secondary winding and areas of the ignition coil with a lower potential is measured according to the highest voltage between two potentials; this is known to be in the area of the high voltage output of the secondary winding.
  • Such an ignition coil is known from FR-A 119719, in which the greatest insulation distance exists between the high-voltage output and the primary winding, but is the smallest to the iron core; the extent to which this applies to the housing cannot be determined.
  • Such an ignition coil is also known from US Pat. No. 4,352,079, the first coil former with primary winding of which is arranged inside the second coil former and surrounds it in a pot-shaped housing. Due to the cylindrical sleeve shape of the windings and the coil body as well as the housing, the insulation distance is constant in all areas. If there is a requirement for an increased insulation distance between the high-voltage output of the secondary winding and all elements of the ignition coil which have a lower potential, this would result in a relatively large construction volume and therefore an excessive amount of casting compound.
  • the problem set out in the aforementioned prior art is solved in a technically simple manner and achieved that the ignition coil has a small diameter with the same power and a small amount of casting compound is required.
  • the area of the insertion opening which is formed by the end face of the first coil former of the primary winding and the bottom of the housing, must be perfectly sealed when the ignition coil is cast - this takes place without the iron core.
  • FIG. 1 shows the axial section of an ignition coil for ignition systems of internal combustion engines; and FIG. 2 in sections and partially cut the housing base after the ignition coil has been cast.
  • the only figure of an ignition system for internal combustion engines shows an ignition coil with a lamellar iron core 10, which is arranged coaxially with the axis 11 of the ignition coil, and a first coil body 12, which is coaxial with the iron core 10, with a primary winding 13. Also coaxial with this is a second coil body 14 in Chamber version arranged with a secondary winding 15.
  • a pot-shaped, essentially hollow-cylindrical housing 16 made of plastic has an insertion opening 17 in the bottom for fastening the first coil former 12 with the primary winding 13 and the iron core 10.
  • the first coil former 12 widens in its edge region 18 to accommodate a dome 19 a contact sleeve 20 molded therein for the secondary connection of the ignition coil and receives two primary connection bolts 21 (only one of which is visible) for the connection to the battery or to the ignition distributor or switching device.
  • the first end section 24 of the primary winding 13 makes contact with the one connecting pin 21.
  • the second end section 24 'of the primary winding and the second end section 23' of the secondary winding 15 are fixed to a connecting part 22 'which makes contact with the other connecting pin, not shown.
  • the first end section 23 of the secondary winding 15 makes contact with the contact sleeve 20 via a connecting part 22.
  • the second bobbin 14 in chamber design has a frustoconical, outwardly widening inner wall section 25, an approximately cylindrical inner wall section 25 'and forms e.g. eight ring chambers 26, which form seven inner ring webs 27 and two outer ring webs 28, 28 '.
  • the axial cross section of each ring land 27 is trapezoidal, and the narrow sides of the trapezoid partially form the outer boundary of the second coil former 14.
  • the radial expansion i.e.
  • each chamber winding 29 of the secondary winding 15 decreases towards the higher chamber potential according to the law of the geometrical series, and the individual chamber windings 29 are arranged in such a way that the insulation distance between the secondary winding 15 and regions of the ignition coil which carry a lower potential also increasingly higher chamber potential.
  • the insulation distance 30, 30 'of the chamber winding 29 with the highest chamber potential to the primary winding 13 or to the outside of the housing 16 is greater than the insulation distance 31, 31' of the chamber winding 29 with the smallest corresponding chamber potential.
  • the elements of the ignition coil are fastened in an insulating manner in the housing 16 by a casting compound 32, which is shown hatched only in the edge area.
  • the gradation of the chamber windings 29 in terms of their height and cross-sectional area does not have to correspond exclusively to the geometric series, but can also be carried out according to production engineering and strength considerations.
  • the bottom 36 of the housing 16 of the ignition coil has an inwardly curved opening edge 33, to which a hat-shaped cover 41 connects in one piece via a predetermined breaking point 35.
  • a hat-shaped cover 40 is formed on the end face of the first coil former 12 via a predetermined breaking point 34, which cap is inserted into the cover 41 when the first coil former 12 and housing 16 are axially joined together.
  • both covers 40, 41 are separated at the predetermined breaking point 34, 35 by a tool.
  • the iron core (FIG. 1) is then inserted into the insertion opening 17 in such a way that the end section of the iron core 10 projects partially over the bottom 36 of the housing 10.
  • the housing 16 and the coil body 12 are made of the thermoplastic polybutylene reinforced with glass fiber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)
EP83903378A 1982-11-26 1983-11-04 Zündspule für zündanlagen von brennkraftmaschinen Expired EP0126734B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3243806 1982-11-26
DE3243806 1982-11-26
DE3301224A DE3301224A1 (de) 1982-11-26 1983-01-15 Zuendspule fuer zuendanlagen von brennkraftmaschinen
DE3301224 1983-01-15

Publications (2)

Publication Number Publication Date
EP0126734A1 EP0126734A1 (de) 1984-12-05
EP0126734B1 true EP0126734B1 (de) 1986-06-04

Family

ID=25806112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83903378A Expired EP0126734B1 (de) 1982-11-26 1983-11-04 Zündspule für zündanlagen von brennkraftmaschinen

Country Status (8)

Country Link
US (1) US4580122A (it)
EP (1) EP0126734B1 (it)
JP (1) JPH061737B2 (it)
AU (2) AU559858B2 (it)
DE (2) DE3301224A1 (it)
ES (1) ES527570A0 (it)
IT (1) IT1168732B (it)
WO (1) WO1984002224A1 (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677960A (en) * 1984-12-31 1987-07-07 Combustion Electromagnetics, Inc. High efficiency voltage doubling ignition coil for CD system producing pulsed plasma type ignition
DE3506929A1 (de) * 1985-02-27 1986-08-28 Robert Bosch Gmbh, 7000 Stuttgart Zuendvorrichtung mit einem hochspannungsanschluss
US4684912A (en) * 1986-07-09 1987-08-04 Marshall Electric Corporation Winding form for high voltage transformer
DE3745047C2 (de) * 1986-12-04 1997-04-30 Nippon Denso Co Zündspulensatz für eine Brennkraftmaschine
EP0297487B1 (en) * 1987-06-30 1994-09-14 TDK Corporation Transformer
DE3937828C1 (en) * 1989-11-14 1991-06-20 Bremi Auto-Elektrik Bremicker Gmbh + Co, 5883 Kierspe, De Ignition coil for IC engine - has two opposite-facing side walls of housing with orifices which serve as entrance for magnetic core
US5109209A (en) * 1990-04-28 1992-04-28 Toyo Denso Kabushiki Kaisha Ignition coil device for engine
DE4040604A1 (de) * 1990-12-19 1992-06-25 Bosch Gmbh Robert Verfahren und vorrichtung zur herstellung von spulen
DE4132699C2 (de) * 1991-10-01 1996-07-18 Beru Werk Ruprecht Gmbh Co A Mehrfachzündspule
DE4309818C2 (de) * 1993-03-26 1999-10-28 Bayerische Motoren Werke Ag Zündeinheit für Brennkraftmaschinen
DE4314444A1 (de) * 1993-05-03 1994-11-10 Daimler Benz Ag Zündspule für Brennkraftmaschinen
DE19815153C1 (de) * 1998-03-27 1999-07-15 Siemens Ag Stromwandler zur Versorgung eines elektronischen Überstromauslösers mit Hilfsenergie
US8026783B2 (en) * 2009-09-08 2011-09-27 Delphi Technologies, Inc. Ignition coil for vehicle
US10410790B2 (en) 2015-05-13 2019-09-10 Mitsubishi Electric Corporation Ignition coil for internal combustion engine
US11380479B2 (en) 2019-06-13 2022-07-05 Marshall Electric Corp. High voltage ignition coil with improved insulating characteristics

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732937A (en) * 1929-10-22 Transformer and coil system
US1062046A (en) * 1908-01-10 1913-05-20 Westinghouse Electric & Mfg Co Electrical apparatus.
US1896143A (en) * 1932-04-13 1933-02-07 Delco Remy Corp Coil-switch unit
US2107973A (en) * 1934-12-29 1938-02-08 Transformateurs De Mesure E Wa Electric transformer for high tension
CH204606A (fr) * 1937-01-14 1939-05-15 Transformateurs De Mesure E Wa Transformateur électrique pour haute tension.
US2695856A (en) * 1952-08-22 1954-11-30 Mcculloch Motors Corp Impregnation of electrical components
FR1119719A (fr) * 1954-12-18 1956-06-25 Holding Ind Et Financiere Mandrin pour montage anti-capacitif des circuits secondaires de bobines d'allumage pour moteurs à explosions
US3236937A (en) * 1963-04-29 1966-02-22 Briggs & Stratton Corp Connector means and receptacle for connecting high tension lead to ignition coil
US3675077A (en) * 1971-01-18 1972-07-04 Floyd M Minks High voltage ignition system transformer
JPS5221613A (en) * 1975-08-13 1977-02-18 Hitachi Ltd Ignition coil
AU511801B2 (en) * 1976-05-04 1980-09-04 Philips Industries Holdings Limited Magneto ignition oil
DE2628524C2 (de) * 1976-06-24 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Hochspannungswicklung aus mehreren Teilspulen für Spannungswandler,
US4179796A (en) * 1978-03-13 1979-12-25 Varo Semiconductor, Inc. Method of making a transformer with an improved insulation system
DE2822093A1 (de) * 1978-05-20 1979-11-22 Hoechst Ag Mit thermoplastischem kunststoff isolierte kraftfahrzeugzuendspule
DE2838174A1 (de) * 1978-09-01 1980-03-13 Philips Patentverwaltung Hochspannungsspule fuer einen hochspannungstransformator
JPS598331Y2 (ja) * 1978-10-20 1984-03-15 ソニー株式会社 フライバツクトランス
US4352079A (en) * 1981-07-24 1982-09-28 Honeywell Inc. High voltage ignition transformer

Also Published As

Publication number Publication date
ES8406781A1 (es) 1984-08-01
EP0126734A1 (de) 1984-12-05
US4580122A (en) 1986-04-01
JPS60500152A (ja) 1985-01-31
AU6360986A (en) 1987-01-08
IT1168732B (it) 1987-05-20
ES527570A0 (es) 1984-08-01
AU559858B2 (en) 1987-03-19
AU570857B2 (en) 1988-03-24
AU2201583A (en) 1984-06-18
DE3301224A1 (de) 1984-05-30
DE3363959D1 (en) 1986-07-10
JPH061737B2 (ja) 1994-01-05
IT8323813A0 (it) 1983-11-22
WO1984002224A1 (en) 1984-06-07

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