EP1267461A1 - Bougie d'allumage - Google Patents

Bougie d'allumage Download PDF

Info

Publication number
EP1267461A1
EP1267461A1 EP01127513A EP01127513A EP1267461A1 EP 1267461 A1 EP1267461 A1 EP 1267461A1 EP 01127513 A EP01127513 A EP 01127513A EP 01127513 A EP01127513 A EP 01127513A EP 1267461 A1 EP1267461 A1 EP 1267461A1
Authority
EP
European Patent Office
Prior art keywords
housing
spark plug
insulator
combustion chamber
fastening device
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
EP01127513A
Other languages
German (de)
English (en)
Other versions
EP1267461B1 (fr
Inventor
Werner Dr. Herden
Dieter Volz
Anja Melsheimer
Simon Schmittinger
Rainer Norgauer
Rene Deponte
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 EP1267461A1 publication Critical patent/EP1267461A1/fr
Application granted granted Critical
Publication of EP1267461B1 publication Critical patent/EP1267461B1/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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • 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
    • H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
    • 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
    • H01T13/12—Means on sparking plugs for facilitating engagement by tool or by hand

Definitions

  • the invention relates to a spark plug of the genus Main claim.
  • WO 97/49153 describes a spark plug with a tubular metallic housing known.
  • the spark plug includes an insulator held by the housing and an inner conductor arrangement embedded in the insulator.
  • the housing extends along the axis of the spark plug away from the combustion chamber up to about a hexagon. The protrudes Isolator away from the combustion chamber via the spark plug housing out.
  • the spark plug according to the invention with the features of The main claim has the advantage that the Insulator along the axis of the spark plug up to extends at most to the end of the housing. In this way the insulator does not protrude from the combustion chamber Spark plug out, so the spark plug is not a so-called Isolator head has. In this way, on End of the spark plug housing away from the combustion chamber saved, for example, from the head of one adjacent to Spark plug in the cylinder head injector can be taken.
  • the insulator away from the combustion chamber before the end of the housing ends and through a high voltage resistant plastic until the end of the Housing is continued. In this way, electrical Arcing between a high voltage connection of the Spark plug and the housing prevented.
  • Another advantage is that the isolator in the Potted housing with the high-voltage-resistant plastic is. In this way, protection from electrical Flashover between the high voltage connection and the Housing particularly effective possible. In addition, the This makes the insulator particularly stable in the housing be attached.
  • the Fastening device at the end of the housing far from the combustion chamber includes a slot for engaging a tool. On This creates additional space in the cylinder head saved because the fastening device is no longer must be accessible from the side but only from above.
  • the insulator is distant from the combustion chamber a clamping ring is fixed in the housing. In this way the isolator is kept stable in the housing.
  • 10 indicates a spark plug.
  • the spark plug 10 comprises a metallic, tubular housing 15 with a External thread 55, via which the spark plug 10 in a bore 80 of a cylinder head 1 is screwed in.
  • metallic, tubular housing 15 is an insulator 3 arranged, the rotationally symmetrical axes of the housing 15 and the insulator 3 are congruent and coincide with a longitudinal axis 25 of the spark plug 10.
  • the High-voltage connection 4 can be connected directly to the center electrode 7 be attached or as shown in Figure 1 via a Intermediate piece 20.
  • the intermediate piece 20 can be one Resistance include.
  • the resistance can be as Resistance line or designed as insertion resistance and alternatively at another point in the Inner conductor arrangement, for example in the area of Center electrode 7 or the high-voltage connection 4 be arranged.
  • Combustion chamber side protrudes in the example Figure 1, the insulator 3 out of the housing 15.
  • the Center electrode 7 in turn protrudes from the combustion chamber Insulator 3 out and thus into the combustion chamber 35.
  • the Housing 15 is on the combustion chamber side according to FIG Ground electrode 60 continued, which acts as a roof electrode bulges over the end face of the center electrode 7.
  • This one described arrangement of the insulator 3, the center electrode 7 and the ground electrode 60 in the combustion chamber 35 is only listed as an example. Arbitrary results to the expert Alternatives to the spark plug design on the combustion chamber side 10, for example also with more than one ground electrode.
  • the insulator 3 extends along the longitudinal axis 25 from the combustion chamber 35 to a maximum of one End 30 of the housing 15 remote from the combustion chamber. This means that the spark plug 10 has no end 30 remote from the combustion chamber Housing 15 protruding insulator head. Much more the insulator 3 closes with the end 30 of the combustion chamber Housing 15 from or ends before the combustion chamber End 30 of the housing 15, as shown in Figure 1. According to Figure 1 protrudes the insulator 3 in the area of High voltage connection 4 into it.
  • the insulator 3 like shown in Figure 1 in front of the distant end 30 of the Housing 15 to end and the insulator 3 to end 30 of the housing 15 remote from the combustion chamber by a high-voltage resistant plastic 5 to continue. To this An electrical flashover may occur High voltage connection 4 to the housing 15 safely avoided become. To also cover the spaces between the insulator 3 and to fill in the high-voltage connection 4 and thereby one increased high-voltage strength and a firm fit to realize the insulator 3 in the housing 15, the Insulator 3 in the housing 15 with the high voltage resistant Plastic 5 are cast.
  • the plastic 5 closes then with the end 30 of the housing 15 remote from the combustion chamber as shown in Figure 1. It can be provided for the plastic 5 to choose a material that not only high voltage resistant, but also in the area of the combustion chamber 35 occurring temperatures is temperature resistant to the longest possible lifespan of the plastic 5 when To ensure operation.
  • the insulator 3 On the combustion chamber side, the insulator 3 according to FIG held a sealing seat in the housing 15, one shoulder 65 of the insulator 3 on an annular projection 70 of the tubular metallic housing 15 rests.
  • the Sealing seat 50 prevents the fuel-air mixture from penetrating from the combustion chamber 35 via a combustion chamber 35 facing breathing space 75 of the spark plug 10 into the Housing 15 of the spark plug 10. Additionally or alternatively the sealing and combustion chamber-side mounting of the isolator 3 in the housing 15 also done by a sealing ring which on end of the breathing space 75 distant from the combustion chamber Insulator 3 and the housing 15 is clamped. Will both the Sealing seat 50 and a sealing ring used, so the Sealing ring can be arranged in the region of the sealing seat 50.
  • the insulator 3 is distant from the combustion chamber by the plastic 5 in Housing 15 held.
  • the insulator 3 distant from the combustion chamber by a clamping ring 6, which is also is clamped between the housing 15 and the insulator 3, in Housing 15 are held.
  • the housing 15 in its interior in the area of end of the insulator 3 remote from the combustion chamber Include flare 40 that holds the insulator 3 in the housing 15 and prevents it from falling out.
  • the housing 15 can be remote from the combustion chamber, as shown in FIG be completed by a fastening device 2.
  • the fastening device 2 can be as in FIG. 1 shown in dashed lines a polygon, in particular one Include hexagon 45.
  • the one shown in FIG cylinder head bore identified by reference numeral 80 a space to the side of the fastening device 2 between the hexagon 45 and an inner wall 85 of the Have cylinder head bore 80 to engage a Fastening tool, for example one Spark plug wrench for screwing in or unscrewing the Allow spark plug 10 in or out of the cylinder head 1. This distance is not shown in Figure 1.
  • the fastening device 2 at the end 30 of the housing 15 remote from the combustion chamber, a slot 8 to engage a tool, for example one Screwdrivers include, as seen in the top view of the Figure 2, in which otherwise the same reference numerals Identify elements as shown in Figure 1 is shown.
  • a slot accessible from above with a screwdriver 8 of the fastening device 2 is a lateral distance between the fastening device 2 and the inner wall 85 the cylinder head bore 80 is no longer required to be a Screwing or unscrewing the spark plug 10 in the To enable cylinder head 1 or from the cylinder head 1. In this way, space is saved in the cylinder head 1.
  • the saving of installation space takes place at the Spark plug 10 of the invention mainly by omission of the insulator head above the end 30 distant from the combustion chamber Housing 15.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP01127513A 2001-06-16 2001-11-17 Bougie d'allumage Expired - Lifetime EP1267461B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10129125A DE10129125A1 (de) 2001-06-16 2001-06-16 Zündkerze
DE10129125 2001-06-16

Publications (2)

Publication Number Publication Date
EP1267461A1 true EP1267461A1 (fr) 2002-12-18
EP1267461B1 EP1267461B1 (fr) 2004-08-11

Family

ID=7688441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127513A Expired - Lifetime EP1267461B1 (fr) 2001-06-16 2001-11-17 Bougie d'allumage

Country Status (2)

Country Link
EP (1) EP1267461B1 (fr)
DE (2) DE10129125A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2545656A (en) * 2015-12-18 2017-06-28 Caterpillar Energy Solutions Gmbh Spark plug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR809908A (fr) * 1936-05-11 1937-03-12 Construction spéciale de bougie d'allumage
DD115521A1 (fr) * 1974-11-01 1975-10-05
FR2581803A4 (fr) * 1984-03-23 1986-11-14 Doletina Jean Pierre Traversee a eclateur (bougie etanche serie automobile).
DE19627952A1 (de) * 1996-07-11 1998-01-22 Dieter Dipl Ing Reitz Zündkerze einer Brennkraftmaschine und zugehöriges Montagewerkzeug
EP0963018A1 (fr) * 1998-05-15 1999-12-08 Ngk Spark Plug Co., Ltd Bougie d'allumage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE121333C (fr) *
DE137819C (fr) *
US1352149A (en) * 1918-09-25 1920-09-07 Champion Ignition Co Spark-plug
US2651298A (en) * 1947-12-26 1953-09-08 Bendix Aviat Corp Ignition apparatus and method of making same
DE1008962B (de) * 1953-09-18 1957-05-23 Hugo Matissek Vollabgeschirmte Zuendkerze mit Kunststoffisolierkoerper fuer Brennkraftmaschinen
GB2179397B (en) * 1985-08-24 1988-09-07 Ford Motor Co Spark plug
DE4003021A1 (de) * 1990-02-02 1991-08-08 Didier Werke Ag Zuendanlage fuer brennkraftmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR809908A (fr) * 1936-05-11 1937-03-12 Construction spéciale de bougie d'allumage
DD115521A1 (fr) * 1974-11-01 1975-10-05
FR2581803A4 (fr) * 1984-03-23 1986-11-14 Doletina Jean Pierre Traversee a eclateur (bougie etanche serie automobile).
DE19627952A1 (de) * 1996-07-11 1998-01-22 Dieter Dipl Ing Reitz Zündkerze einer Brennkraftmaschine und zugehöriges Montagewerkzeug
EP0963018A1 (fr) * 1998-05-15 1999-12-08 Ngk Spark Plug Co., Ltd Bougie d'allumage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2545656A (en) * 2015-12-18 2017-06-28 Caterpillar Energy Solutions Gmbh Spark plug

Also Published As

Publication number Publication date
DE50103228D1 (de) 2004-09-16
DE10129125A1 (de) 2003-01-02
EP1267461B1 (fr) 2004-08-11

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