EP1558874B1 - Culot en plastique pour bougies-crayon de prechauffage - Google Patents

Culot en plastique pour bougies-crayon de prechauffage Download PDF

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Publication number
EP1558874B1
EP1558874B1 EP03809685A EP03809685A EP1558874B1 EP 1558874 B1 EP1558874 B1 EP 1558874B1 EP 03809685 A EP03809685 A EP 03809685A EP 03809685 A EP03809685 A EP 03809685A EP 1558874 B1 EP1558874 B1 EP 1558874B1
Authority
EP
European Patent Office
Prior art keywords
housing
plug
plug housing
glow
plastic
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
EP03809685A
Other languages
German (de)
English (en)
Other versions
EP1558874A1 (fr
Inventor
Steffen Carbon
Volker Rothacker
Albert Weitten
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 EP1558874A1 publication Critical patent/EP1558874A1/fr
Application granted granted Critical
Publication of EP1558874B1 publication Critical patent/EP1558874B1/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
    • 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
    • F23Q2007/004—Manufacturing or assembling methods

Definitions

  • the invention relates to a glow plug, in particular for fuel combustion engines, consisting essentially of a housing, a housing connected to the radiator with a heating tube arranged in the heating and control coil and a housing disposed in the connection bolt for powering the heating and control coil.
  • Fuel-efficient engines in particular diesel engines, require a heat source, which preheats either the gas mixture, the intake air or the combustion chamber, for a good start-up and warm-up behavior, especially at low temperatures.
  • glow plugs In motor vehicles usually glow plugs are used here. They protrude at least with a part of the radiator in the combustion chamber of the engine and heat it up at least before, during and after the start of the fuel engine.
  • the glow plugs are generally constructed so that they have a radiator consisting of a glow tube in which an embedded in magnesium oxide powder filament is arranged. This filament consists of a heating coil and a control coil and is connected at the top with the glow tube.
  • the radiator is pressed into a metallic housing, the so-called candle housing.
  • the electrical supply is made via a centric connection bolt with plug-in or screw connection. Mass connection via the housing.
  • the electrical insulation from plus to minus contact is made by an insulating washer.
  • Such a glow plug is, for example, from US 2002/0144994 A1 out.
  • the object of the invention is to optimize the cartridge housing manufacturing technology.
  • the slimmer, that is thinner and longer the candle housing of the glow plug is, the more expensive in itself the production.
  • the housings are produced by turning them from a solid material. Due to the small diameter of the plug housing, the method is very expensive.
  • the plastic used here fulfills different properties, depending on which parts of the plug housing are used. On the one hand, it is temperature-stable to withstand the resulting heat unscathed and on the other hand, it has a high mechanical strength. For this purpose, it is preferably proposed to use fiber-reinforced plastics. Alternatively, it may be provided to manufacture the plug housing by means of injection molding or in winding technique or by layered laminated fabric.
  • the division of the two-part or three-part housing takes place in the longitudinal direction of the longitudinal extension of the Kerzengoophuses.
  • the length of the plug housing is varied in such a way that a large number of glow pencil core lengths has been covered with a few incandescent parts and a part tuned to the housing length. It makes sense to create the necessary for the attachment of the glow plug part made of metallic materials. This enables a constant production and thus a reduction of the costs as well as an improvement of the quality.
  • Kerzcngeffe electrically isolated depending on the version relative to the engine block, so that an insulating disc, as is known from the prior art, is unnecessary.
  • FIG. 1 a glow plug 1 is shown.
  • This glow plug comprises a plug housing 2 and a protruding from the plug housing glow tube 3, in which not shown in the drawing heating and control coil are arranged.
  • connection bolt is provided within the plug housing, which is in electrical contact with the terminal 4 and the heating and control coil within the glow tube 3.
  • the plug housing 2 in the cross-hatched areas of plastic, wherein the lower part of the glow tube 3 is made of metal (heat reasons).
  • the housing is divided into three parts in the longitudinal direction, wherein the pointing to the terminal 4 part is made of metal and the pointing to the glow tube 3 part of metal.
  • the remaining part of the candle housing 2, shown in the drawing crosshatched, is made of plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Fats And Perfumes (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (5)

  1. Bougie-crayon notamment pour des moteurs à combustion interne comprenant :
    - un boîtier (2) de bougie-crayon,
    - un tube à incandescence (3) relié au boîtier de bougie-crayon (2) et ayant une hélice de chauffage et de régulation installée dans le tube à incandescence (3) ou dans un corps chauffant en matière céramique, et
    - une broche de branchement (4) prévue dans le boîtier (2) de la bougie-crayon pour l'alimentation électrique de l'hélice de chauffage et de régulation ou du corps chauffant en matière céramique,
    caractérisée en ce que
    le boîtier (2) de la bougie-crayon est réalisé en deux parties, une partie du corps de bougie-crayon est en matière plastique et une partie tournée vers le tube à incandescence (3) est en métal.
  2. Bougie-crayon notamment pour des moteurs à combustion interne comprenant :
    - un boîtier (2) de bougie-crayon,
    - un tube à incandescence (3) relié au boîtier (2) de bougie-crayon et ayant une hélice de chauffage et de régulation installée dans le tube à incandescence (3) ou dans un corps chauffant en matière céramique, et
    - une broche de branchement (4) prévue dans le boîtier (2) de la bougie-crayon pour l'alimentation électrique de l'hélice de chauffage et de régulation ou du corps chauffant en matière céramique,
    caractérisée en ce que
    le boîtier (2) de la bougie-crayon est réalisé en trois parties, une partie en métal tournée vers le tube à incandescence (3), une partie en métal tournée vers la broche de branchement (4) et une partie intermédiaire en matière plastique.
  3. Bougie-crayon selon la revendication 1 ou 2,
    caractérisée en ce que
    la partie en matière plastique du boîtier (2) de la bougie-crayon est réalisée en une matière composite avec des fibres de carbone.
  4. Bougie-crayon selon la revendication 1 ou 2,
    caractérisée en ce que
    la partie réalisée en matière plastique du boîtier (2) de la bougie-crayon est en une matière composée de fibres de verre.
  5. Bougie-crayon selon les revendications précédentes,
    caractérisée en ce que
    la partie en matière plastique du boîtier (2) de la bougie-crayon résiste à la chaleur.
EP03809685A 2002-10-25 2003-05-28 Culot en plastique pour bougies-crayon de prechauffage Expired - Lifetime EP1558874B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10249706 2002-10-25
DE10249706A DE10249706A1 (de) 2002-10-25 2002-10-25 Gehäuse für Glühstiftkerzen aus Kunststoff
PCT/DE2003/001733 WO2004040194A1 (fr) 2002-10-25 2003-05-28 Culot en plastique pour bougies-crayon de prechauffage

Publications (2)

Publication Number Publication Date
EP1558874A1 EP1558874A1 (fr) 2005-08-03
EP1558874B1 true EP1558874B1 (fr) 2008-12-10

Family

ID=32102977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03809685A Expired - Lifetime EP1558874B1 (fr) 2002-10-25 2003-05-28 Culot en plastique pour bougies-crayon de prechauffage

Country Status (5)

Country Link
EP (1) EP1558874B1 (fr)
JP (1) JP4204552B2 (fr)
AT (1) ATE417230T1 (fr)
DE (2) DE10249706A1 (fr)
WO (1) WO2004040194A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869392B1 (fr) 2004-04-27 2006-07-14 Siemens Vdo Automotive Sas Tete d'une bougie de prechauffage equipee d'un capteur de pression
DE102007046808A1 (de) * 2007-09-29 2009-04-02 Man Diesel Se Zündeinrichtung für ein gasförmiges Kraftstoff-Luftgemisch in Gasmotoren, Gas-Ottomotoren oder Dieselmotoren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920758C1 (de) * 1999-05-05 2000-12-21 Beru Ag Glühkerze und Verfahren zur Herstellung derselben
DE10117641C2 (de) * 2001-04-09 2003-02-27 Beru Ag Stabglühkerze

Also Published As

Publication number Publication date
EP1558874A1 (fr) 2005-08-03
DE10249706A1 (de) 2004-05-13
DE50310911D1 (de) 2009-01-22
ATE417230T1 (de) 2008-12-15
JP4204552B2 (ja) 2009-01-07
WO2004040194A1 (fr) 2004-05-13
JP2006504066A (ja) 2006-02-02

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