EP1440497B1 - Organe de raccordement de systemes d'allumage de moteurs a combustion interne - Google Patents

Organe de raccordement de systemes d'allumage de moteurs a combustion interne Download PDF

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Publication number
EP1440497B1
EP1440497B1 EP02781138A EP02781138A EP1440497B1 EP 1440497 B1 EP1440497 B1 EP 1440497B1 EP 02781138 A EP02781138 A EP 02781138A EP 02781138 A EP02781138 A EP 02781138A EP 1440497 B1 EP1440497 B1 EP 1440497B1
Authority
EP
European Patent Office
Prior art keywords
connecting means
outer casing
connecting device
protective cap
internal combustion
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 - Lifetime
Application number
EP02781138A
Other languages
German (de)
English (en)
Other versions
EP1440497A1 (fr
Inventor
Dieter Raff
Bernd Schumacher
Dieter Betz
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 EP1440497A1 publication Critical patent/EP1440497A1/fr
Application granted granted Critical
Publication of EP1440497B1 publication Critical patent/EP1440497B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01T13/02—Details
    • H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
    • 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

Definitions

  • the invention relates to a connection means for ignition systems of internal combustion engines according to the preamble of claim 1.
  • connection means for connecting an ignition coil to a spark plug through the use of a spark plug, an ignition cable and a spark plug.
  • This protective cap which is usually made of a special rubber compound, is particularly endangered in today's internal combustion engines. Contributing in particular as a burdening circumstances that in today's engines, a motor encapsulation takes place and as a result, the cap experiences a high temperature load.
  • a connecting means known having a protective cap, which is constructed at least two layers and an inner sheath of electrical insulating material and on the inner sheath directly adjacent outer sheath of electrically conductive material which is electrically connected to ground potential.
  • a connecting means with a flexible elastomeric inner shell known.
  • US 5,890,473 A It is known to apply the outer shell on the inner shell as a sprayed layer.
  • JP-60 122279 A is known to perform the outer sheath as a braid.
  • the connecting means for ignition systems of internal combustion engines according to the invention with the characterizing features of claim 1 has the advantage that the aforementioned shortcomings are avoided.
  • the connecting means according to the features of claim 1 is formed.
  • the protective cap is at least two layers constructed with an inner sheath of electrical insulating material and with a directly on the inner sheath outer sheath of electrically conductive material, which is electrically connected to ground potential. By direct contact of the outer shell on the inner jacket air pockets are avoided. With the formation of the outer sheath of conductive material and the contact with the ground potential of the inner sheath is despite electrical spacing on the plug shaft to the cylinder head electrically set directly to ground potential.
  • the outer jacket is flexibly applied to the inner shell, so that the connecting means in the region of the terminals for contacting is expandable, without changing its electrical properties.
  • a connection means 11 for ignition systems of internal combustion engines 12 has, as in the FIG. 1 shown, the following main features: a first terminal 13 for an ignition coil 14, a second terminal 16 for a spark plug 17, an only hinted drawn, the two terminals 13, 16 connecting electrical conductors 18, and one, the terminals 13, 16 and the Head 18 at least partially sheathing protective cap 19th
  • the connecting means 11 is positioned in a shaft 21, also referred to as a candle niche, in a cylinder head 22 of the internal combustion engine 12.
  • the spark plug 14 is recessed in a known manner and mounted in a stationary manner.
  • the protective cap 19 has, as in the FIG. 2 is executed, one, the terminals 13 and the conductor 18 facing inner shell 23 and an outer shell 24 which connects in the radial direction directly, without gaps, to the inner shell 23.
  • the inner jacket 23 is made of an electrical insulating material, preferably of a silicone-based elastomer. Also possible would be an elastic plastic in the manner of a thermoplastic elastomer.
  • the inner shell 23 is applied in one operation by injection molding to the provided as inserts in an injection molding tool, connected to the conductor 18 terminals 13, 16 with a layer thickness of about 3 mm.
  • the inner jacket 23 projects beyond the connections 13, 16 at the front-side openings in the form of a sleeve. Thereby mating plug of the ignition coil 14 and the spark plug 17, which are connected to the terminals 13, 16, partially enclosed and sealed.
  • the outer shell 24 is, like the inner shell 23, flexible, so that it is resiliently expandable during insertion of the connecting means 11 on the mating connector of the ignition coil 14 and the spark plug 17 and the composite with the inner shell 23 remains unchanged.
  • the outer jacket 24 is electrically conductive. He has, in its longitudinal course adjacent to the first terminal 13, three axially spaced, mutually parallel sealing rings 27, the cross-sectional areas taper to the free ends as far as that the free ends are deflectable.
  • the sealing rings 27 are dimensioned in their radial extent so that they come into contact with the insertion of the connecting means 11 in the shaft 21 on an inner side 28 of the shaft 21 with slight excess and on the one hand a shaft seal 29 and on the other hand electrical contact points 31 to the lying at ground potential Cylinder head 22 of the internal combustion engine 12 form.
  • the outer jacket 24 is preferably made of an electrically conductive, sprayed directly on the outside 26 of the inner shell 23 elastomer based on silicone, so that a gap, cohesive connection between the shells 23, 24 is formed.
  • the outer sheath 24 could also be formed by an on the outside 26 close-fitting, up and spring-back braided shielding made of electrically conductive metal.
  • outer jacket 24 from a shrink tube, a thin-walled plastic tube or the like.
  • the outer jacket 24 it is important for the function of the outer jacket 24 that this is made of an electrically conductive material and in its mechanical properties such as the inner jacket 23 up and resiliency. Thus, the conditions are created that the intimate distance-free dressing between the sheath 23, 24 is maintained even during insertion operations of the connecting means 11.
  • the outer side 26 of the inner jacket 23 is electrically connected directly to the ground potential of the cylinder head 22 of the internal combustion engine 12 as the outer terminating layer of the electrical insulator of the connecting means 11, so that no intermediate insulating layers such as air gaps occur on this electrical path.

Landscapes

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

Abstract

L'invention concerne un organe de raccordement (11) de systèmes d'allumage de moteurs à combustion interne (12), caractérisé en ce que ledit organe de raccordement (11) offre un fonctionnement sûr même dans des conditions d'utilisation défavorables. Ledit organe de raccordement (11) comporte entre autres un premier raccord (13) destiné à une bobine d'allumage (14), un deuxième raccord (16) destiné à une bougie d'allumage (17) et un capot de protection (19) entourant lesdits raccords (13, 16). Ledit capot de protection (19) comporte deux couches, c.-à-d. une enveloppe intérieure (23) réalisée dans un matériau isolant électrique et une enveloppe extérieure (24) s'appuyant directement sur l'enveloppe intérieure (23), réalisée dans un matériau conducteur électrique raccordé électriquement à un potentiel de masse. Les enveloppes (23, 24) sont toutes deux réalisées dans un matériau élastique. L'organe de raccordement selon l'invention (11) est destiné à l'industrie automobile.

Claims (6)

  1. Organe de raccordement d'installations d'allumage de moteurs à combustion interne, comprenant un premier raccord (13) pour une bobine d'allumage (14) et un deuxième raccord (16) pour une bougie d'allumage (17), avec un conducteur (18) reliant électriquement les raccords (13, 16) et avec un capuchon de protection (19) enveloppant au moins en partie ces pièces, le capuchon de protection (19) étant construit au moins en deux couches et présentant une enveloppe interne (23) tournée vers les pièces en matériau électriquement isolant, et une enveloppe externe (24) s'appliquant directement sur l'enveloppe interne (23), en matériau électriquement conducteur, qui est en liaison électrique avec le potentiel de la masse, caractérisé en ce que la connexion électrique de l'enveloppe externe (24) au potentiel de la masse est réalisée par une garniture de gaine (29) matérialisée sur l'enveloppe externe (24).
  2. Organe de raccordement selon la revendication 1, caractérisé en ce que l'enveloppe externe (24) est appliquée de manière flexible sur l'enveloppe interne (23) constituée d'un élastomère.
  3. Organe de raccordement selon la revendication 2, caractérisé en ce que l'enveloppe externe (24) est appliquée sous forme de couche pulvérisée sur l'enveloppe interne (23).
  4. Organe de raccordement selon la revendication 3, caractérisé en ce que l'enveloppe externe (24) est un élastomère.
  5. Organe de raccordement selon la revendication 2, caractérisé en ce que l'enveloppe externe (24) est une tresse de blindage en métal.
  6. Organe de raccordement selon la revendication 2, caractérisé en ce que l'enveloppe externe (24) est un tube flexible thermorétractable.
EP02781138A 2001-10-23 2002-10-21 Organe de raccordement de systemes d'allumage de moteurs a combustion interne Expired - Lifetime EP1440497B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10152085 2001-10-23
DE10152085A DE10152085A1 (de) 2001-10-23 2001-10-23 Verbindungsmittel für Zündanlagen von Brennkraftmaschinen
PCT/DE2002/003961 WO2003038958A1 (fr) 2001-10-23 2002-10-21 Organe de raccordement de systemes d'allumage de moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1440497A1 EP1440497A1 (fr) 2004-07-28
EP1440497B1 true EP1440497B1 (fr) 2011-06-29

Family

ID=7703305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02781138A Expired - Lifetime EP1440497B1 (fr) 2001-10-23 2002-10-21 Organe de raccordement de systemes d'allumage de moteurs a combustion interne

Country Status (5)

Country Link
US (1) US6932627B2 (fr)
EP (1) EP1440497B1 (fr)
JP (1) JP4348184B2 (fr)
DE (1) DE10152085A1 (fr)
WO (1) WO2003038958A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594489B1 (en) * 2007-01-19 2009-09-29 Marshall Electric Corp. High voltage extender
DE102010063508A1 (de) * 2010-12-20 2012-06-21 Robert Bosch Gmbh Zündspule mit Anbindungsvorrichtung
US9923300B2 (en) * 2016-05-18 2018-03-20 Marshall Electric Corp. Semi-rigid high-voltage extender
US10008830B2 (en) * 2016-05-18 2018-06-26 Marshall Electric Corp. High-voltage extender for connecting a spark plug to a high-voltage source
CN107332109A (zh) * 2017-04-26 2017-11-07 周向进 一种喷火的火花塞及其内燃机和汽车
DE102018108292B4 (de) * 2017-11-17 2023-05-11 Borgwarner Ludwigsburg Gmbh Verbindungsstecker zum Anschließen einer Zündspule an eine Zündkerze sowie Schutzrohr für einen Verbindungsstecker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987587A (en) * 1959-07-16 1961-06-06 Hallett Mfg Company Electrically shielded cap for a unit of the ignition system of internal-combustion engines
JPS60122279A (ja) * 1983-12-05 1985-06-29 Ngk Spark Plug Co Ltd 点火装置における雑音防止装置
US5890473A (en) * 1996-02-06 1999-04-06 Robert Bosch Gmbh Ignition device for a multi-cylinder internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423624A (en) * 1982-02-24 1984-01-03 Creative Tool Company Diesel timing light
DE3544870A1 (de) 1985-12-18 1987-06-19 Beru Werk Ruprecht Gmbh Co A Zuendkerzenstecker
JPH08144918A (ja) 1994-11-17 1996-06-04 Sumitomo Wiring Syst Ltd 内燃機関用点火装置
DE19509793C2 (de) 1995-03-17 1997-04-30 Audi Ag Zündkerzenstecker
EP0796993B1 (fr) 1996-03-21 2003-07-09 Hitachi, Ltd. Appareil d'allumage pour un moteur à combustion interne
DE19612508C2 (de) 1996-03-29 2000-05-04 Bremi Auto Elektrik Ernst Brem Verbindungsstecker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987587A (en) * 1959-07-16 1961-06-06 Hallett Mfg Company Electrically shielded cap for a unit of the ignition system of internal-combustion engines
JPS60122279A (ja) * 1983-12-05 1985-06-29 Ngk Spark Plug Co Ltd 点火装置における雑音防止装置
US5890473A (en) * 1996-02-06 1999-04-06 Robert Bosch Gmbh Ignition device for a multi-cylinder internal combustion engine

Also Published As

Publication number Publication date
WO2003038958A1 (fr) 2003-05-08
JP4348184B2 (ja) 2009-10-21
EP1440497A1 (fr) 2004-07-28
US20040065286A1 (en) 2004-04-08
JP2005507057A (ja) 2005-03-10
US6932627B2 (en) 2005-08-23
DE10152085A1 (de) 2003-04-30

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