EP2462340A2 - Bobine, bougie et système d'allumage - Google Patents

Bobine, bougie et système d'allumage

Info

Publication number
EP2462340A2
EP2462340A2 EP10730479A EP10730479A EP2462340A2 EP 2462340 A2 EP2462340 A2 EP 2462340A2 EP 10730479 A EP10730479 A EP 10730479A EP 10730479 A EP10730479 A EP 10730479A EP 2462340 A2 EP2462340 A2 EP 2462340A2
Authority
EP
European Patent Office
Prior art keywords
spring
spark plug
ignition coil
recess
contact
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.)
Granted
Application number
EP10730479A
Other languages
German (de)
English (en)
Other versions
EP2462340B1 (fr
Inventor
Werner Steinberger
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 EP2462340A2 publication Critical patent/EP2462340A2/fr
Application granted granted Critical
Publication of EP2462340B1 publication Critical patent/EP2462340B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/04—Means providing electrical connection to sparking plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H01T13/41—Sparking plugs structurally combined with other devices with interference suppressing or shielding means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H01T13/44—Sparking plugs structurally combined with other devices with transformers, e.g. for high-frequency ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/22—Connectors or cables specially adapted for engine management applications
    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs

Definitions

  • Ignition coil, spark plug and Zündanordnunq comprising an ignition coil and - candle
  • the present invention relates to an ignition coil, a spark plug, and an ignition assembly having an ignition coil and a spark plug.
  • Ignition coils, spark plugs as well as these existing Zündan extracten are known from the prior art in different configurations.
  • DE 10 2007 026 669 A1 shows an ignition coil with a high voltage terminal and a spring for electrically connecting the high voltage terminal with a spark plug, wherein the spring of a
  • Protective jacket is surrounded. A contact between the spring and one
  • the ignition coil according to the invention with the features of claim 1 has the advantage that they provide a simple and secure contact
  • Spark plug allows and is particularly easy and inexpensive to produce. Furthermore, the ignition coil according to the invention ensures that only in a very small space, in particular in the radial direction of a spring of the ignition coil, in particular in the region of the contact with the spark plug, is necessary. In addition, a safe shielding of a
  • the reduced outer circumference of the contact portion can thereby be very well shielded in the radial direction relative to the mass-connected cylinder head.
  • the shielding is preferably carried out by means of a recess provided in a contact region of the spark plug, which has an annular peripheral wall portion, which receives and shields the circumference reduced contact portion of the spring in the assembled state of the ignition coil.
  • the outer diameter-reduced contact portion of the spring is tapered, in particular conically tapered, formed.
  • the tapered region additionally ensures a good fixation of the spring in the assembled state, so that e.g. when vibration occurs in the motor, reduced abrasion due to reduced movement of the tapered contact portion of the spring occurs.
  • the contact portion of the spring is conical, the contact portion has a substantially frusto-conical envelope surface, wherein the
  • the reduced-circumference contact portion of the spring is substantially cylindrical with a smaller outer diameter than an outer diameter the other sections of the spring formed. This also makes it possible to achieve an improved shielding of the contact section of the spring and furthermore a particularly secure seating of the contact section in a correspondingly formed recess of the spark plug.
  • the contact portion of the spring is preferably arranged in a block, i.e., adjacent turns on the contact portion of the spring contact each other.
  • the present invention relates to a spark plug having the features of claim 7, comprising a contact area for contact with a spring of an ignition coil.
  • the contact region of the spark plug has a recess which is surrounded by a closed, annular wall region. The recess serves to receive a contact portion of the spring
  • Ignition coil and the wall portion provides a shield of the contact portion of the spring in the radial direction.
  • An opening of the recess on the spark plug is preferably directed perpendicular to a central axis of the spring to allow a safe and easy reception of the spring in the recess.
  • a bore may be formed in a cylinder head for the spark plug having a smaller diameter.
  • the recess tapers toward a center axis of the spark plug to allow easy finding of a contact portion of the spring of the ignition coil.
  • the taper of the recess is
  • the recess is formed cylindrical at the contact region of the spark plug, so that the recess can also be easily and inexpensively manufactured.
  • the contact section is designed as a spherical segment or as a parabolic section.
  • the recess has a depth which is equal to or greater than a diameter of a spring wire of the spring of the ignition coil. This ensures that at least one complete turn of the spring end is arranged in the recess of the spark plug.
  • the depth of the recess is chosen such that at least two complete turns of the spring can be accommodated.
  • the wall region surrounding the recess has a minimum thickness, which corresponds to a wire diameter of the spring.
  • the recess has a circular bottom portion. In this way, the last turn of the spring can rest safely on the bottom portion of the recess. In this case, a transition from the bottom area to the wall area of the recess is also preferred
  • the rounding is chosen with a radius which corresponds to a radius of the wire of the spring of the ignition coil.
  • the radius is preferably between 0.3 to 0.5 mm, particularly preferably 0.4 mm. More preferably, the depth of the recess is smaller than a radius of the bottom portion. This can ensure that the
  • the present invention relates to a Zündan onion comprising a spark plug according to the invention and / or an ignition coil according to the invention.
  • the spark plug has a contact region with a recess which is surrounded by an annularly closed wall region.
  • the ignition coil comprises a spring with a contact portion, which is arranged in the recess of the spark plug.
  • the ignition arrangement according to the invention has no space in the radial direction of the spark plug increased space, but can preferably be made even smaller. As a result, in particular tightened space requirements can be met in modern engines and correspondingly necessary
  • the ignition arrangement according to the invention is preferably constructed such that a shape of the recess of the spark plug is formed complementary to an envelope surface of the contact portion of the spring of the ignition coil. This corresponds to the shape of the recess and the shape of the contact portion of the spring, so that the two contact areas of the spark plug and the
  • Ignition coil are designed to match each other. This simplifies not only a mounting but also the contact between the two components.
  • the envelope surfaces of the recess and the contact portion are not complementary to each other, e.g. the contact portion is cylindrical and the
  • a depth of the recess in the axial direction is at least equal to or greater than a wire diameter of the spring of the ignition coil.
  • the depth of the recess is two to three times greater than the wire diameter of the spring.
  • a thickness of the wall portion is equal to or greater than the wire diameter of the spring.
  • the depth of the recess in the axial direction is preferably between 1, 2 mm to 1, 6 mm, more preferably 1, 5 mm.
  • the diameter of the spring wire is preferably between 0.5 to 0.8 mm and is particularly preferably 0.6 mm.
  • the contact portion of the spring contacted only the wall portion of the spark plug.
  • FIG. 1 is a schematic sectional view of an ignition arrangement according to a first exemplary embodiment of the invention
  • FIG. 2 shows an enlargement of a contacting region between an ignition coil and a spark plug of the ignition arrangement of FIG. 1,
  • Figure 4 is a schematic sectional view of a contacting region between an ignition coil and a spark plug according to a second embodiment of the invention.
  • Ignition assembly 1 with an ignition coil 2 and a spark plug 3 according to a first embodiment of the invention described.
  • the ignition coil 2 comprises a coil housing 5, in which a primary coil 6 and a secondary coil 7 cooperate in such a way that a high voltage for the spark plug 3 is generated from a low DC voltage of a battery 4.
  • the primary coil 6 is over a
  • High voltage terminal 9 with the spark plug 3 electrically connected The spark plug 3 is in a shaft 10 of a cylinder head 11 a
  • a center axis of the spark plug and the ignition coil is designated by the reference numeral 12.
  • the ignition coil 2 further comprises, as a contact element, a spring 15, which is surrounded by an insulating protective sleeve 16.
  • the insulating protective case surrounds both the high voltage terminal 9 and a Contact region 30 of the spark plug 3.
  • the contact region 30 is the region of the spark plug 3, which is directed in the direction of the longitudinal axis 12 to the ignition coil 3.
  • the contact region 30 of the spark plug has a recess 31 which is located at the outermost end of the spark plug
  • the recess 31 has a
  • the wall region 32 starting from the opening of the recess 31 in the direction of the bottom region 33, is tapered. More specifically, the recess 31 tapers conically, wherein an opening angle ⁇ of the taper is 50 °. Further, a radially outwardly directed support shoulder 34 is formed at the contact portion 30 of the spark plug, which support for the
  • Protective cover 16 forms, as shown in Figure 2 can be seen. As further seen in Figures 1 and 2, the spring 15 has three
  • Main sections namely a first block section 15.1, a
  • the block section 15.1 is a lot longer than the spring section 15.2 and the
  • the tapered contact portion 15.3 comprises exactly three turns of the spring 15.
  • the contact portion 15.3 thus forms an im
  • An opening angle of the taper of the contact portion 15.3 corresponds to the opening angle ⁇ of the wall portion 32 of the recess 31 on the spark plug.
  • the last turn of the contact portion 15.3 of the spring can touch the bottom portion 33, the
  • contact portion is located securely on the peripheral wall portion 32 of the recess 31. In this case, a single contact point between contact portion and wall area is sufficient.
  • the second and third turns of the contact section 15.3 touch the wall region 32. In this way, a particularly good contact between the contact section 15.3 and the contact region 30 of the spark plug is achieved.
  • Wall portion 32 a circumferential shield ready for the spring end, so that an excellent shield against electrical
  • Length of the contact portion 30 of the spark plug can be reduced in the axial direction, so that this results in a reduction of space in the axial direction. Furthermore, material savings result at the contact region 30 of the spark plug. This leads to a further cost reduction of the spark plug.
  • this area can be used for an extended insulator area.
  • the cone-shaped recess 31 ensures easier finding of the contact portion 15.3 during assembly and also allows improved fixation of the contact portion 15.3 in the recess 31 in vibrations of the internal combustion engine. This results in a reduced abrasion and thus a prolonged service life of the contact between the ignition coil and
  • spark plug The contacting solution according to the invention between spark plug and ignition coil thus provides a significant improvement which can be realized in a simple and cost-effective manner. Furthermore, by providing the support shoulder 34, a simple fixing of the protective cover 16 to the spark plug 3 can be made possible.
  • Figure 3 shows in detail the contact region 30 of the spark plug 3, wherein a depth T of the recess 31 has approximately three times a wire diameter D ( Figure 2).
  • the depth is 1, 5 mm, wherein the contact region 30 in the axial direction has a total thickness A of 2.8 mm.
  • a maximum outer diameter B on the support shoulder 34 is 7.7 mm
  • a Outer diameter C of the wall portion 32 is 6.4 mm and a
  • Diameter E at the opening of the recess 31 is 5 mm. Further, a transition between the inner wall surface of the wall portion 32 and the bottom portion 33 is provided with a radius R, wherein the wall portion 32 at the opening of the recess 31 also has rounded portions, so that in particular the contact portion 15.3 of the spring can be easily inserted and the Protective cover 16 simply over the wall area 32
  • Contact section 15.3 of the spring 15 is formed such that the turns of the spring of the contact portion 15.3 form a cylindrical envelope surface.
  • Contact section 15.3 thus has a cylindrical envelope surface with a
  • Diameter D1 which is smaller than a diameter D2 of the remaining portions of the spring 15.
  • a diameter of the recess 31 is selected such that the contact portion 15.3 relatively firm and secure in the
  • Recess 31 sits.
  • the wall portion 32 in turn provides a shield of the spring end, without requiring additional space would be necessary.
  • the recess 31 of the second embodiment can be made particularly simple and inexpensive. By rounding off the edges of the
  • Wall area 32 which are directed in the direction of the ignition coil, also some help in a centering during assembly can be achieved.
  • the turns of the contact portion 15.3 of the spring are also provided again on block, so that a particularly good contact is achieved. Otherwise, this embodiment corresponds to the

Landscapes

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

Abstract

L'invention concerne une bobine d'allumage comprenant une connexion haute tension (9) et un ressort (15) pour la connexion électrique de la connexion haute tension (9) avec une bougie d'allumage (3), une section de contact (15.3) du ressort (15), dirigée vers la bougie d'allumage (3), présentant une périphérie externe réduite, comparativement à une périphérie externe d'autres sections (15.1, 15.2) du ressort (15). L'invention concerne en outre une bougie d'allumage, comprenant une zone de contact (30) pour la mise en contact avec un ressort (15) d'une bobine d'allumage (3), la zone de contact (30) présentant un évidement (31) entouré par une zone de paroi (32) annulaire, fermée, pour la réception de la section de contact (15.3) du ressort de la bobine d'allumage. L'invention concerne en outre un ensemble d'allumage présentant une bougie d'allumage et/ou une bobine d'allumage conforme à l'invention.
EP10730479.2A 2009-08-03 2010-07-12 Bobine, bougie et système d'allumage Active EP2462340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009035897A DE102009035897A1 (de) 2009-08-03 2009-08-03 Zündspule, Zündkerze sowie Zündanordnung umfassend eine Zündspule und -kerze
PCT/EP2010/059994 WO2011015427A2 (fr) 2009-08-03 2010-07-12 Bobine d'allumage, bougie d'allumage et ensemble d'allumage comprenant une bobine d'allumage et une bougie d'allumage

Publications (2)

Publication Number Publication Date
EP2462340A2 true EP2462340A2 (fr) 2012-06-13
EP2462340B1 EP2462340B1 (fr) 2020-09-16

Family

ID=42938603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10730479.2A Active EP2462340B1 (fr) 2009-08-03 2010-07-12 Bobine, bougie et système d'allumage

Country Status (7)

Country Link
US (1) US9194359B2 (fr)
EP (1) EP2462340B1 (fr)
JP (1) JP5850836B2 (fr)
CN (1) CN102472241A (fr)
DE (1) DE102009035897A1 (fr)
ES (1) ES2836767T3 (fr)
WO (1) WO2011015427A2 (fr)

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FR2964803B1 (fr) * 2010-09-10 2012-08-31 Renault Sa Bougie d'allumage pour moteur a combustion interne
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US9605644B2 (en) * 2013-06-06 2017-03-28 Ford Global Technologies, Llc Dual coil ignition system
CN104078224B (zh) * 2014-07-04 2018-11-13 北京德尔福万源发动机管理系统有限公司 点火线圈的胶套总成、点火线圈及组装测试工艺、工装
JP6375882B2 (ja) * 2014-11-11 2018-08-22 株式会社デンソー 内燃機関用点火コイル
JP2016211446A (ja) * 2015-05-11 2016-12-15 株式会社デンソー 内燃機関用点火装置
DE202015006794U1 (de) 2015-09-28 2015-10-12 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündgerät für eine Zündkerze einer Brennkraftmaschine
DE102016219281B4 (de) 2016-10-05 2018-12-13 Bayerische Motoren Werke Aktiengesellschaft Zündvorrichtung mit einer Feder zur elektrischen Anbindung einer Zündkerze sowie Verbrennungsmotor und Kraftfahrzeug mit einer solchen
DE102018108292B4 (de) * 2017-11-17 2023-05-11 Borgwarner Ludwigsburg Gmbh Verbindungsstecker zum Anschließen einer Zündspule an eine Zündkerze sowie Schutzrohr für einen Verbindungsstecker
US11233378B2 (en) 2017-12-01 2022-01-25 Walbro Llc Spark plug coupler
DE102019100894B3 (de) * 2019-01-15 2020-04-23 Borgwarner Ludwigsburg Gmbh Zündspule
JP7263824B2 (ja) 2019-02-18 2023-04-25 株式会社デンソー スパークプラグ、及びその製造方法
JP7238530B2 (ja) 2019-03-26 2023-03-14 株式会社デンソー 点火コイル
AT523774A2 (de) 2020-05-07 2021-11-15 Man Energy Solutions Se Kontaktierungseinrichtung einer Spannungsübertragungseinrichtung einer Zündeinrichtung eines Großmotors, Zündkerze, Zündeinrichtung und Großmotor

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See also references of WO2011015427A2

Also Published As

Publication number Publication date
EP2462340B1 (fr) 2020-09-16
WO2011015427A2 (fr) 2011-02-10
JP2013501180A (ja) 2013-01-10
US20120186568A1 (en) 2012-07-26
CN102472241A (zh) 2012-05-23
JP5850836B2 (ja) 2016-02-03
WO2011015427A3 (fr) 2011-10-20
ES2836767T3 (es) 2021-06-28
DE102009035897A1 (de) 2011-02-10
US9194359B2 (en) 2015-11-24

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