EP1295067B1 - Bougie crayon de prechauffage - Google Patents

Bougie crayon de prechauffage Download PDF

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Publication number
EP1295067B1
EP1295067B1 EP01943162A EP01943162A EP1295067B1 EP 1295067 B1 EP1295067 B1 EP 1295067B1 EP 01943162 A EP01943162 A EP 01943162A EP 01943162 A EP01943162 A EP 01943162A EP 1295067 B1 EP1295067 B1 EP 1295067B1
Authority
EP
European Patent Office
Prior art keywords
current
layer
heating element
carrying layer
glow plug
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
EP01943162A
Other languages
German (de)
English (en)
Other versions
EP1295067A1 (fr
Inventor
Pia Mondal
Christine Engel
Andreas Reissner
Wolfgang Dressler
Horst Boeder
Christoph Kern
Steffen Schott
Ruth Hoffmann
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 EP1295067A1 publication Critical patent/EP1295067A1/fr
Application granted granted Critical
Publication of EP1295067B1 publication Critical patent/EP1295067B1/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 glow plug according to the invention with the features of independent claim has the advantage that at the end of the heating element remote from the combustion chamber There is a risk of short circuit. Another advantage is consider that the contact area between the first current-carrying layer and the contact element, which on end of the heating element remote from the combustion chamber is arranged, is enlarged. This reduces the Contact resistance, resulting in less heating of the Contact point leads. The risk of thermal destruction of the contact material between the heating element and the contact element is thus reduced. It is also advantageous that for Removal of one located on the rod-shaped heating element insulating layer in the area in which the Contact should be made to the power supply, an alignment of the rod-shaped heating element does not have to take place.
  • the first is current-carrying layer 11 in the first section 21 as strong widened that the cross section of the first current-carrying Layer 11 in this section is the cross section of the Heating element corresponds.
  • the design of this An exemplary embodiment can also be seen in FIG. 1.
  • the cross section of the first current-carrying layer 11 ensures that the Contact area of the first current-carrying layer 11 to Contact element 31, which at the end remote from the combustion chamber Heating element is arranged, is enlarged. This increase the contact area leads to a reduction in Contact resistance and therefore not as strong Warming up this area.
  • the lateral surface is a insulating layer 16 arranged, which preferably as Glass cover is formed.
  • this insulating Layer 16 is interrupted or it is a contact layer 17 trained the contact between the second current-carrying layer 12 and the sealing compound 5 improved.
  • This contact layer 17 can preferably be metallic Layer be formed.
  • the insulating layer 18 made of the material from which the insulation layer 15 is made. So is one Manufacturing process that involves the manufacture of a Laminate between electrically insulating and contains electrically conductive ceramic layers, possible especially inexpensively, since all layers under Use of the same equipment and facilities can be produced. A process step that a Application of a chemically different layer, is saved.
  • FIG. 4 is another embodiment of a Heating element of a glow plug according to the invention shown schematically.
  • the heating element now points to a stepped pin 11 'on the end remote from the combustion chamber, which connects to the first current-carrying layer 11 and from the material of the first current-carrying layer 11 consists.
  • This stepped pin is used for precise Placement of the contacting element 31 and the first Clamping sleeve 33, as also shown in FIG. 1 is.
  • FIG. 5 is another embodiment Glow plug according to the invention schematically in longitudinal section shown. This focused on the combustion chamber end the glow plug is limited. It should be based on this Drawing are shown again that the Insulation layer 18 or the third section 23 from am End of the heating element adjacent to the combustion chamber to the edge of the housing 3 on the combustion chamber side extends. As already described with reference to FIG. 1, close at the end of the heating element away from the combustion chamber first clamping sleeve 33 and a contact element 31. In one preferred embodiment can be from the combustion chamber facing end face of the pin 11 'of the second Insulation layer 11 provided with a contact layer 17 be the contact between the first insulation layer 11 and contact element 31 improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Claims (9)

  1. Bougie crayon de préchauffage destinée à être disposée dans une chambre à combustion, comportant une enveloppe (3) et un élément chauffant en forme de crayon disposé dans une cavité concentrique de l'enveloppe, l'élément chauffant présentant une première couche électroconductrice (11) et une seconde couche électroconductrice (12), la première couche électroconductrice (11) et la seconde couche électroconductrice (12) étant reliées à l'extrémité de l'élément chauffant disposée du côte de la chambre de combustion par une surface conductrice (13), la première couche électroconductrice (11) et la seconde couche électroconductrice (12) étant séparées par une première couche isolante (15) et la première couche électroconductrice (11) et la seconde couche électroconductrice (12) présentant des longueurs différentes,
    caractérisée en ce que
    la première couche électroconductrice (11) présente, dans une première section (21) disposée à l'extrémité de l'élément chauffant opposée au côté de la chambre de combustion, une section transversale relativement grande par rapport au reste de sa longueur et la seconde couche électroconductrice (12) ne pénètre pas dans la première section (21).
  2. Bougie crayon de préchauffage selon la revendication 1,
    caractérisée en ce que
    la première couche électroconductrice (11) présente, dans la première section (21), une section transversale correspondant à la section transversale de l'élément chauffant.
  3. Bougie crayon de préchauffage selon la revendication 2,
    caractérisée en ce que
    la première couche isolante (15) présente, dans une deuxième section (22) de l'élément chauffant, une section transversale relativement grande, par rapport au reste de sa longueur, la deuxième section (22) faisant suite, dans la direction de la chambre de combustion, à la première section (21) et la seconde couche électroconductrice (12) ne pénétrant pas dans la deuxième section (22).
  4. Bougie crayon de préchauffage selon la revendication 3,
    caractérisée en ce que
    l'extrémité, disposée du côté de la chambre de combustion, de la deuxième section (22) de l'élément chauffant n'est pas disposée à la jonction (19) existant entre une collerette de l'élément chauffant et une tige de l'élément chauffant.
  5. Bougie crayon de préchauffage selon la revendication 1,
    caractérisée en ce que
    la première couche électroconductrice (11) est entourée d'une seconde couche isolante (18) appliquée depuis l'extérieur sur la longueur d'une troisième section (23) de l'élément chauffant.
  6. Bougie crayon de préchauffage selon la revendication 5,
    caractérisée en ce que
    la troisième section (23) de l'élément chauffant se prolonge depuis l'extrémité de l'élément chauffant opposée au côté de la chambre de combustion jusqu'au-delà de l'extrémité de l'enveloppe (3) opposée au côté de la chambre de combustion.
  7. Bougie crayon de préchauffage selon la revendication 1,
    caractérisée en ce que
    la première couche électroconductrice (11) présente, à l'extrémité opposée au côté de la chambre de combustion de la première section (21) de l'élément chauffant, un tourillon (11') saillant.
  8. Bougie crayon de préchauffage selon la revendication 1,
    caractérisée en ce que
    la première couche électroconductrice (11), la seconde couche électroconductrice (12) et la surface conductrice (13) se composent d'un matériau céramique électroconducteur et la première couche isolante (15) et
    la seconde couche isolante (18) se composent d'un matériau céramique électro-isolant.
  9. Bougie crayon de préchauffage selon la revendication 8,
    caractérisée en ce que
    la première couche isolante (15) et la seconde couche isolante (18) se composent d'un matériau céramique électro-isolant identique.
EP01943162A 2000-06-24 2001-05-26 Bougie crayon de prechauffage Expired - Lifetime EP1295067B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10030924A DE10030924A1 (de) 2000-06-24 2000-06-24 Glühstiftkerze
DE10030924 2000-06-24
PCT/DE2001/002032 WO2002001112A1 (fr) 2000-06-24 2001-05-26 Bougie crayon de prechauffage

Publications (2)

Publication Number Publication Date
EP1295067A1 EP1295067A1 (fr) 2003-03-26
EP1295067B1 true EP1295067B1 (fr) 2004-11-24

Family

ID=7646734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01943162A Expired - Lifetime EP1295067B1 (fr) 2000-06-24 2001-05-26 Bougie crayon de prechauffage

Country Status (10)

Country Link
US (1) US6727472B2 (fr)
EP (1) EP1295067B1 (fr)
JP (1) JP5038575B2 (fr)
CZ (1) CZ2002546A3 (fr)
DE (2) DE10030924A1 (fr)
ES (1) ES2231507T3 (fr)
HU (1) HU224593B1 (fr)
PL (1) PL352576A1 (fr)
SK (1) SK2342002A3 (fr)
WO (1) WO2002001112A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029837A1 (de) * 2005-06-27 2007-01-04 Robert Bosch Gmbh Glühstiftkerze
DE102006062309A1 (de) 2006-12-27 2008-07-03 Robert Bosch Gmbh Glühstiftkerze
US20100078421A1 (en) * 2008-10-01 2010-04-01 Federal-Mogul Italy Sr1 Glow plug adn heater assembly therefor with an improved connection between a central electrode and a heater probe of the heater assembly
DE102013215269A1 (de) 2013-08-02 2015-02-05 Robert Bosch Gmbh Glühstiftkerze mit einem Heizelement mit innen liegender Kontaktierung, und Herstellungsverfahren derselben
FR3025153B1 (fr) * 2014-09-01 2016-12-09 Bosch Gmbh Robert Bougie de prechauffage

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142714C (fr) *
US4486651A (en) * 1982-01-27 1984-12-04 Nippon Soken, Inc. Ceramic heater
US4475029A (en) 1982-03-02 1984-10-02 Nippondenso Co., Ltd. Ceramic heater
JPS62141423A (ja) * 1985-12-13 1987-06-24 Jidosha Kiki Co Ltd デイ−ゼルエンジン用グロ−プラグ
DE3701929A1 (de) * 1986-01-22 1987-08-13 Jidosha Kiki Co Gluehkerze fuer eine dieselmaschine
JPS62148869U (fr) * 1986-03-11 1987-09-19
DE3924777A1 (de) * 1988-07-26 1990-02-08 Ngk Spark Plug Co Keramische heizvorrichtung und verfahren zu deren herstellung
DE3843863A1 (de) * 1988-12-24 1990-06-28 Bosch Gmbh Robert Hochtemperatur-heizelement, verfahren zu seiner herstellung und verwendung desselben
CH681186A5 (fr) * 1989-11-09 1993-01-29 Battelle Memorial Institute
US5304778A (en) * 1992-11-23 1994-04-19 Electrofuel Manufacturing Co. Glow plug with improved composite sintered silicon nitride ceramic heater
US5750958A (en) * 1993-09-20 1998-05-12 Kyocera Corporation Ceramic glow plug
DE19506950C2 (de) * 1995-02-28 1998-07-23 Bosch Gmbh Robert Glühstiftkerze für Dieselmotoren
JP3801756B2 (ja) * 1996-11-19 2006-07-26 日本特殊陶業株式会社 セラミックグロープラグ
JPH10208853A (ja) * 1996-11-19 1998-08-07 Ngk Spark Plug Co Ltd セラミックヒータ、およびその製造方法
DE19930334C2 (de) * 1999-07-02 2003-07-31 Beru Ag Keramischer Heizstab und diesen enthaltende Glühkerze und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
HUP0202427A2 (en) 2002-12-28
US6727472B2 (en) 2004-04-27
ES2231507T3 (es) 2005-05-16
EP1295067A1 (fr) 2003-03-26
CZ2002546A3 (cs) 2002-10-16
DE50104622D1 (de) 2004-12-30
HU224593B1 (hu) 2005-11-28
US20030116553A1 (en) 2003-06-26
JP5038575B2 (ja) 2012-10-03
WO2002001112A1 (fr) 2002-01-03
PL352576A1 (en) 2003-08-25
JP2004502120A (ja) 2004-01-22
DE10030924A1 (de) 2002-01-03
SK2342002A3 (en) 2002-10-08

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