BR112012020090A2 - ignition coil - Google Patents

ignition coil

Info

Publication number
BR112012020090A2
BR112012020090A2 BR112012020090A BR112012020090A BR112012020090A2 BR 112012020090 A2 BR112012020090 A2 BR 112012020090A2 BR 112012020090 A BR112012020090 A BR 112012020090A BR 112012020090 A BR112012020090 A BR 112012020090A BR 112012020090 A2 BR112012020090 A2 BR 112012020090A2
Authority
BR
Brazil
Prior art keywords
contact
high voltage
housing
sealing
spring
Prior art date
Application number
BR112012020090A
Other languages
Portuguese (pt)
Other versions
BR112012020090B1 (en
Inventor
Konstantin Lindenthal
Thomas Pawlak
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of BR112012020090A2 publication Critical patent/BR112012020090A2/en
Publication of BR112012020090B1 publication Critical patent/BR112012020090B1/en

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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation

Landscapes

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

Abstract

bobina de ignição. bobinas de ignição são conhecidas tendo um alojamento, em que está previsto um corpo de bobina, que apresenta uma saída de alta tensão, que é contatada em um contato de alta tensão, sandoe que o alojamento é cheio com uma massa de selagem. o contato elétrico entre a saída de alta tensão e o contato de alta tensão é obtido por uma mola de contato, que com uma força de mola pressiona sobre o contato de alta tensão. a mola de contato, assim como o corpo de bobina, está embutida na massa de selagem. a desvantagem é que o contato de alta tensão está mecanicamente acoplado com o alojamento da bobina de ignição e a mola de contato com a massa de selagem, pois o alojamento apresenta um coeficiente de dilatação térmica diferente da massa de selagem. assim pode ocorrer interrupções de contato entre a saída de alta tensão do corpo de bobina e o contato de alta tensão conduzindo à vela de ignição, quando o contato de alta tensão juntamente com o alojamento por dilatação térmica se move para longe da mola de contato que se encontra na massa de selagem. essas interrupções de contato conduzem, na operação da bobina de ignição, a assim chamados trechos de pré-fagulha, pelos quais o material no contato de alta tensão pode ser erodido, resultando interferências eletromagnéticas e reduzindo a energia da fagulha.na bobina de ignição segundo a invenção são impedidas interrupções de contato. segundo a invenção é previsto que o contato de alta tensão (15) é de tal maneira executado que resulta uma união positiva com a massa de selagem (7).bobina de ignição. bobinas de ignição são conhecidas tendo um alojamento, em que está previsto um corpo de bobina, que apresenta uma saída de alta tensão, que é contatada em um contato de alta tensão, sandoe que o alojamento é cheio com uma massa de selagem. o contato elétrico entre a saída de alta tensão e o contato de alta tensão é obtido por uma mola de contato, que com uma força de mola pressiona sobre o contato de alta tensão. a mola de contato, assim como o corpo de bobina, está embutida na massa de selagem. a desvantagem é que o contato de alta tensão está mecanicamente acoplado com o alojamento da bobina de ignição e a mola de contato com a massa de selagem, pois o alojamento apresenta um coeficiente de dilatação térmica diferente da massa de selagem. assim pode ocorrer interrupções de contato entre a saída de alta tensão do corpo de bobina e o contato de alta tensão conduzindo à vela de ignição, quando o contato de alta tensão juntamente com o alojamento por dilatação térmica se move para longe da mola de contato que se encontra na massa de selagem. essas interrupções de contato conduzem, na operação da bobina de ignição, a assim chamados trechos de pré-fagulha, pelos quais o material no contato de alta tensão pode ser erodido, resultando interferências eletromagnéticas e reduzindo a energia da fagulha.na bobina de ignição segundo a invenção são impedidas interrupções de contato. segundo a invenção é previsto que o contato de alta tensão (15) é de tal maneira executado que resulta uma união positiva com a massa de selagem (7).ignition coil. Ignition coils are known to have a housing in which a coil body is provided having a high voltage output which is contacted in a high voltage contact whereby the housing is filled with a sealing mass. The electrical contact between the high voltage output and the high voltage contact is obtained by a contact spring, which with a spring force presses on the high voltage contact. The contact spring as well as the coil body is embedded in the sealing mass. The disadvantage is that the high voltage contact is mechanically coupled with the ignition coil housing and the sealing contact spring, as the housing has a different coefficient of thermal expansion than the sealing mass. thus contact interruptions may occur between the high voltage output of the coil body and the high voltage contact leading to the spark plug, when the high voltage contact together with the thermal expansion housing moves away from the contact spring that is in the sealing compound. These contact interruptions lead in so-called ignition coil operation to so-called pre-spark sections, whereby material in the high voltage contact can be eroded, resulting in electromagnetic interference and reducing spark energy. The invention prevents contact interruptions. According to the invention it is envisaged that the high voltage contact (15) is such that it results in a positive union with the sealing mass (7). ignition coil. Ignition coils are known to have a housing in which a coil body is provided having a high voltage output which is contacted in a high voltage contact whereby the housing is filled with a sealing mass. The electrical contact between the high voltage output and the high voltage contact is obtained by a contact spring, which with a spring force presses on the high voltage contact. The contact spring as well as the coil body is embedded in the sealing mass. The disadvantage is that the high voltage contact is mechanically coupled with the ignition coil housing and the sealing contact spring, as the housing has a different coefficient of thermal expansion than the sealing mass. thus contact interruptions may occur between the high voltage output of the coil body and the high voltage contact leading to the spark plug, when the high voltage contact together with the thermal expansion housing moves away from the contact spring that is in the sealing compound. These contact interruptions lead in so-called ignition coil operation to so-called pre-spark sections, whereby material in the high voltage contact can be eroded, resulting in electromagnetic interference and reducing spark energy. The invention prevents contact interruptions. According to the invention it is envisaged that the high voltage contact (15) is so designed that a positive union with the sealing mass (7) results.

BR112012020090A 2010-02-11 2011-01-20 ignition coil BR112012020090B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001814A DE102010001814A1 (en) 2010-02-11 2010-02-11 ignition coil
PCT/EP2011/050729 WO2011098329A1 (en) 2010-02-11 2011-01-20 Ignition coil

Publications (2)

Publication Number Publication Date
BR112012020090A2 true BR112012020090A2 (en) 2016-05-17
BR112012020090B1 BR112012020090B1 (en) 2020-02-04

Family

ID=43920764

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012020090A BR112012020090B1 (en) 2010-02-11 2011-01-20 ignition coil

Country Status (4)

Country Link
CN (1) CN102741951B (en)
BR (1) BR112012020090B1 (en)
DE (1) DE102010001814A1 (en)
WO (1) WO2011098329A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9796165B2 (en) 2013-12-18 2017-10-24 Delphi Technologies, Inc. Ignition coil and method of assembly
DE102014210142A1 (en) * 2014-05-27 2015-12-03 Volkswagen Aktiengesellschaft Ignition coil with a Duroplastkunststoff coil housing and / or an injected in a thermoset plastic ignition electronics
DE102014010585A1 (en) * 2014-07-17 2016-01-21 Diehl Metall Stiftung & Co. Kg Brass component and use of the component
DE102016113451B3 (en) * 2016-07-21 2017-09-14 Borgwarner Ludwigsburg Gmbh ignition coil
US10622140B2 (en) * 2016-07-21 2020-04-14 Borgwarner Ludwigsburg Gmbh High voltage contact for an ignition coil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69103553T2 (en) * 1990-03-08 1995-03-02 Nippon Denso Co Ignition coil for internal combustion engines.
JP3126864B2 (en) * 1994-02-25 2001-01-22 三菱電機株式会社 Ignition coil
DE19523900C1 (en) * 1995-06-30 1997-01-16 Bosch Gmbh Robert Process for the pretreatment of a plastic surface to be glued
DE102006025073A1 (en) * 2006-05-30 2007-12-06 Robert Bosch Gmbh ignition coil
DE102006045356A1 (en) * 2006-09-26 2008-04-03 Robert Bosch Gmbh Ignition coil, in particular for an internal combustion engine of a motor vehicle
JP2009027064A (en) 2007-07-23 2009-02-05 Hanshin Electric Co Ltd Ignition coil for internal combustion engine

Also Published As

Publication number Publication date
CN102741951B (en) 2016-05-18
BR112012020090B1 (en) 2020-02-04
CN102741951A (en) 2012-10-17
DE102010001814A1 (en) 2011-08-11
WO2011098329A1 (en) 2011-08-18

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according art. 34 industrial property law
B06T Formal requirements before examination
B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/01/2011, OBSERVADAS AS CONDICOES LEGAIS.