EP0937945A1 - Bougie-crayon à incandescence - Google Patents

Bougie-crayon à incandescence Download PDF

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Publication number
EP0937945A1
EP0937945A1 EP99100628A EP99100628A EP0937945A1 EP 0937945 A1 EP0937945 A1 EP 0937945A1 EP 99100628 A EP99100628 A EP 99100628A EP 99100628 A EP99100628 A EP 99100628A EP 0937945 A1 EP0937945 A1 EP 0937945A1
Authority
EP
European Patent Office
Prior art keywords
glow plug
plug according
candle housing
connection
candle
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
EP99100628A
Other languages
German (de)
English (en)
Other versions
EP0937945B1 (fr
Inventor
Johannes Locher
Werner Teschner
Steffen Schott
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 EP0937945A1 publication Critical patent/EP0937945A1/fr
Application granted granted Critical
Publication of EP0937945B1 publication Critical patent/EP0937945B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines

Definitions

  • the invention relates to a glow plug Arrangement in the combustion chamber of air-compressing internal combustion engines according to the genus of the main claim.
  • glow plugs meet in the upper area between the connecting pin and glow plug essentially the three components round plug (round nut), insulating washer and double seal different functions.
  • round connector forms by force and / or form-fitting Connection the connecting element between the Connection pin of the glow plug and the plug of the engine side harness.
  • the metallic and therefore conductive material of the circular connector also serves the contacting and power supply between the wiring harness and the connecting bolt.
  • the insulating washer made of temperature-resistant and electrical Non-conductive material is used for electrical insulation between candle housing and round plug.
  • the so-called Double seal is used in addition to the electrical insulation between the candle housing and the round plug as well as the centering the connecting bolt in the candle housing mainly the Sealing the inside of the candle case against the Surroundings.
  • the double seal is both by a Sealing surface to the inside of the candle housing as well Characterized sealing surface to the connecting bolt. Out of it to recognize that there are three different components different material are necessary.
  • the glow plug according to the invention with the characteristic has the advantage that for the above functions and requirements only a single component - the so-called insulating sleeve - is required becomes.
  • This component can be made of electrically insulating Material or electrically conductive material with electrically insulating coating exist.
  • this component can have both the sealing function compared to the candle housing and the connecting bolt as well the centering function of the connecting bolt compared to the Ensure candle housing.
  • the electrical contact between the connector of the engine side wiring harness and the Glow plugs can be plugged in directly the end protruding from the sleeve-shaped insulating sleeve of the metallic connecting bolt.
  • the Plug can be in addition to the described friction of the plug contact by an appropriately designed Positive locking element fixed to the outer jacket of the insulating sleeve become.
  • FIG Glow plug in Figure 2 on an enlarged scale Individual part according to the invention in half-longitudinal section.
  • the glow plug 10 consists in a known manner of a tubular candle housing 11 made of metallic and therefore electrically conductive material.
  • a connection pin 12 In the longitudinal bore 11A of the candle housing 11 is a connection pin 12 with the same axis used.
  • the connecting bolt protrudes from the candle housing with its upper end and serves to contact the motor-side connector and the Power supply.
  • the tubular element 15 is so on Connection bolts 12 inserted into the candle housing 11 that both a contact surface between the tubular element and the Connection bolts as well as a contact surface between the Pipe element 15 and the inner contour of the longitudinal bore 11A of the Candle housing is formed.
  • the contact area can by pressing with subsequent axial fixation of the Inner and / or outer edge of the tubular element in the area of into the inside of the candle housing facing towards you Cone on the inner bore of the candle housing and / or the Connection bolt are generated.
  • a circumferential bead 23 of any geometry formed which as a positive locking element for the plug of the engine side cable harness.
  • the pipe element according to Embodiment Figure 1 or Figure 2 points as Joint connection to the connecting bolt 12 has an internal thread 16 on. This goes in the inside of the candle housing End of the tubular element in a bore with a Inside diameter greater than that of the Thread diameter.
  • the seal after this the exemplary embodiment takes place via the inner and outer sealing surface (sealing surface) 18, 19 of the ins Candle housing inside directed end of the raw element.
  • the tubular element according to embodiment 2 has two cylindrical surfaces on the inside and outside diameter, either directly through press fits or indirectly through Joining aids of the above methods as Joint connection with sealing function.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP99100628A 1998-02-12 1999-01-14 Bougie-crayon à incandescence Expired - Lifetime EP0937945B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19805578A DE19805578C1 (de) 1998-02-12 1998-02-12 Glühstiftkerze
DE19805578 1998-02-12

Publications (2)

Publication Number Publication Date
EP0937945A1 true EP0937945A1 (fr) 1999-08-25
EP0937945B1 EP0937945B1 (fr) 2003-05-14

Family

ID=7857396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100628A Expired - Lifetime EP0937945B1 (fr) 1998-02-12 1999-01-14 Bougie-crayon à incandescence

Country Status (3)

Country Link
EP (1) EP0937945B1 (fr)
JP (1) JPH11281058A (fr)
DE (2) DE19805578C1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3021094A1 (fr) * 2014-05-13 2015-11-20 Bosch Gmbh Robert Electrode de prechauffage a joint d'isolation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141840A (en) * 1977-05-16 1978-12-11 Ngk Spark Plug Co Ltd Manufacturing method of sheathed glow plug
US4281451A (en) * 1978-02-10 1981-08-04 General Motors Corporation Electric heater -method of making
US4475030A (en) * 1981-09-25 1984-10-02 Caterpillar Tractor Co. Glow plug having resiliently mounted ceramic surface-ignition element
EP0745808A1 (fr) * 1995-05-31 1996-12-04 Cooper Industries Italia S.p.A. Dispositif pour rendre étanche et pour nettoyage automatique d'une bougie-crayon à incandescence

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231321A (ja) * 1983-06-13 1984-12-26 Ngk Spark Plug Co Ltd 自己制御型グロ−プラグ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141840A (en) * 1977-05-16 1978-12-11 Ngk Spark Plug Co Ltd Manufacturing method of sheathed glow plug
US4281451A (en) * 1978-02-10 1981-08-04 General Motors Corporation Electric heater -method of making
US4475030A (en) * 1981-09-25 1984-10-02 Caterpillar Tractor Co. Glow plug having resiliently mounted ceramic surface-ignition element
EP0745808A1 (fr) * 1995-05-31 1996-12-04 Cooper Industries Italia S.p.A. Dispositif pour rendre étanche et pour nettoyage automatique d'une bougie-crayon à incandescence

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 003, no. 016 (M - 048) 10 February 1979 (1979-02-10) *

Also Published As

Publication number Publication date
JPH11281058A (ja) 1999-10-15
DE59905520D1 (de) 2003-06-18
EP0937945B1 (fr) 2003-05-14
DE19805578C1 (de) 1999-04-22

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