EP1533571B1 - Procédé de fabrication de bougies de préchauffage en céramique - Google Patents

Procédé de fabrication de bougies de préchauffage en céramique Download PDF

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Publication number
EP1533571B1
EP1533571B1 EP04023484.1A EP04023484A EP1533571B1 EP 1533571 B1 EP1533571 B1 EP 1533571B1 EP 04023484 A EP04023484 A EP 04023484A EP 1533571 B1 EP1533571 B1 EP 1533571B1
Authority
EP
European Patent Office
Prior art keywords
layer
glow pin
conductive layer
layer structure
pin axis
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
EP04023484.1A
Other languages
German (de)
English (en)
Other versions
EP1533571A2 (fr
EP1533571A3 (fr
Inventor
Oliver Göb
Hans Houben
Lutz Frassek
Henning Von Watzdorf
Martin Allgaier
Johann Weissenbacher
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.)
BorgWarner Ludwigsburg GmbH
Original Assignee
Beru AG
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 Beru AG filed Critical Beru AG
Publication of EP1533571A2 publication Critical patent/EP1533571A2/fr
Publication of EP1533571A3 publication Critical patent/EP1533571A3/fr
Application granted granted Critical
Publication of EP1533571B1 publication Critical patent/EP1533571B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • 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 method for producing a ceramic glow plug having more than two layers.
  • Ceramic glow plugs which come prefabricated as glow plugs in the field of internal combustion engines are characterized by the fact that they can be heated faster than previously used steel glow plugs and have a much longer life.
  • the object underlying the invention is therefore to provide a method of the type mentioned, which is inexpensive and suitable for mass production.
  • the desired for the optimal function of the glow plug layer structure can be formed in a simple manner, namely by simultaneous extrusion of multiple layers in the form of a tube or a rod.
  • the method according to the invention is in particular one by coextrusion, that is, by simultaneous extrusion of all required Layers prepared raw cylinder of the ceramic glow plug after calibration of the diameter and lengths of the blank by cutting processes tapered at one end and provided at the other end with a Greticiansbohrung.
  • the cylinder machined in this way is then debinded and presintered to ensure sufficient strength for the subsequent process steps.
  • the above-mentioned taper of the raw cylinder at one end and the formation of the contacting hole at the other end can be done by white machining by means of diamond tools even after debinding and pre-sintering.
  • the green body After drying, the green body is fired and ground to its final geometry by a simple and inexpensive pass-through grinding process.
  • an additionally conductive or non-conductive layer can be applied, which protects the actual heating layer from corrosion or even serves as a heating layer and Stromumlenkungs Mrs or the layer structure can be completed.
  • a glow plug for a ceramic glow plug comprises a rotationally symmetrical structure of an electrically conductive inner cylinder 1, a coaxial with the inner cylinder 1 provided on the cylinder outer surface insulating layer 2, a coaxial thereto provided conductive layer 3 and the actual heating layer 4, the coaxial layer 4a and is formed as a perpendicular to the Glühuxachse layer 4b at the end of the arrangement of inner cylinder 1 and layers 2, 3.
  • the cross sections may be asymmetrical, square or rectangular.
  • Fig. 2 shows this in the manufacture of a glow plug after Fig. 1A related principle of coextrusion.
  • the layer structure is formed by extruders 10, 11 and 12 in a coextrusion head 13.
  • the extruder 10 produces the conductive core 1, the extruder 11 applies the insulating layer 2, and the extruder 12 completes the layer structure with the outer conductive layer 3.
  • the coextrusion head 13 for forming three layers may be, for example, a tool used in plastics technology with quill and spiral distributor.
  • the outer heating and redirecting layer 4 is applied, which can be done by spraying a slurry before sintering, but also by dipping, overspraying or thermal spraying.
  • the usual in the field of plastics technology welding process such as ultrasonic, friction welding, etc. be used.
  • This layer 4 is formed as a coaxial layer 4a and perpendicular to the glow plug layer 4b at the end of the arrangement and establishes the connection between the inner and the outer conductor.
  • Fig. 1D shows from top to bottom the annealing zone and the contacting zone.
  • the necessary for the diversion of the electric current layer on the face can in turn be formed by spraying a slurry before sintering but also by dipping, overspraying or thermal spraying.
  • the welding methods customary in the field of plastics technology e.g. Ultrasonic, friction welding and the like be used.
  • the inventive method can be carried out in a variety of different variations, so that it can be easily adapted to different layer thicknesses and types of layers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Claims (9)

  1. Procédé de fabrication d'une bougie de préchauffage en céramique avec un cylindre conducteur électrique intérieur (1) et au moins deux couches extérieures (2, 3) d'une structure stratifiée, le cylindre conducteur électrique intérieur (1) et les deux couches extérieures (2, 3) ou plus de la structure stratifiée étant formées simultanément par co-extrusion, et une couche conductrice (4a, 4b) étant appliquée à une extrémité du co-extrudat constitué du cylindre conducteur électrique intérieur (1) et de la structure stratifiée, la couche conductrice (4a, 4b) comportant une partie (4b) à extension radiale par rapport à l'axe de la bougie de préchauffage, et une partie (4a) à extension axiale par rapport à l'axe de la bougie de préchauffage, si bien que la couche conductrice (4a, 4b) assure une liaison électrique entre le cylindre conducteur électrique intérieur (1) et la couche extérieure conductrice (3) de la structure stratifiée.
  2. Procédé selon la revendication 1, caractérisé en ce que les couches extérieures (2, 3) sont formées symétriquement par rapport à l'axe de la bougie de préchauffage.
  3. Procédé selon la revendication 2, caractérisé en ce que les couches extérieures (2, 3) sont formées coaxialement.
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que la structure stratifiée est à symétrie de révolution et est contactée par un pôle extérieur et un pôle intérieur.
  5. Procédé selon la revendication 1, caractérisé en ce que la partie (4a) de la couche conductrice à extension axiale par rapport à l'axe de la bougie de préchauffage, et/ou la partie (4b) de la couche conductrice à extension radiale par rapport à l'axe de la bougie de préchauffage, sont appliquées à l'extrémité du co-extrudat par pulvérisation, projection, compression, ou par soudage.
  6. Procédé selon la revendication 1, Caractérisé en ce que le co-extrudat est confectionné en état non cuit par usinage à enlèvement de copeaux ou par découpage au jet d'eau.
  7. Procédé selon la revendication 1, caractérisé en ce que la structure stratifiée du co-extrudat est complétée par injection enrobante, couvrante et/ou intérieure dans une presse d'injection.
  8. Procédé selon la revendication 1, caractérisé
    en ce que la partie (4a) de la couche conductrice à extension axiale par rapport à l'axe de la bougie de
    préchauffage, et/ou la partie (4b) de la couche conductrice à extension radiale par rapport à l'axe de la bougie de préchauffage, sont formées à l'extrémité du co-extrudat par pulvérisation thermique après frittage de la structure stratifiée formée par co-extrusion.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bougie de préchauffage est frittée avant d'être partiellement ou complètement rectifiée ou surrectifiée.
EP04023484.1A 2003-11-19 2004-10-01 Procédé de fabrication de bougies de préchauffage en céramique Expired - Lifetime EP1533571B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353972A DE10353972B4 (de) 2003-11-19 2003-11-19 Verfahren zum Herstellen von keramischen Glühkerzen
DE10353972 2003-11-19

Publications (3)

Publication Number Publication Date
EP1533571A2 EP1533571A2 (fr) 2005-05-25
EP1533571A3 EP1533571A3 (fr) 2008-01-02
EP1533571B1 true EP1533571B1 (fr) 2014-03-19

Family

ID=34428795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04023484.1A Expired - Lifetime EP1533571B1 (fr) 2003-11-19 2004-10-01 Procédé de fabrication de bougies de préchauffage en céramique

Country Status (5)

Country Link
US (1) US7160584B2 (fr)
EP (1) EP1533571B1 (fr)
JP (1) JP2005147654A (fr)
KR (1) KR101169216B1 (fr)
DE (1) DE10353972B4 (fr)

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DE10353973B4 (de) * 2003-11-19 2006-08-17 Beru Ag Verfahren zum Herstellen eines keramischen Glühstiftes für eine keramische Glühkerze
EP1815185A2 (fr) * 2004-10-28 2007-08-08 Saint-Gobain Corporation Allumeurs ceramiques
BRPI0607345A2 (pt) * 2005-02-05 2009-09-01 Saint Gobain Ceramics acendedores cerámicos
DE102005024623B4 (de) * 2005-05-30 2007-08-23 Beru Ag Verfahren zum Herstellen eines keramischen Glühstiftes für eine Glühkerze
DE102006016566B4 (de) * 2005-09-22 2008-06-12 Beru Ag Zusammengesetzter Leiter, insbesondere für Glühkerzen für Dieselmotoren
US7607206B2 (en) * 2005-12-29 2009-10-27 Federal Mogul World Wide, Inc. Method for forming layered heating element for glow plug
DE102006018606B4 (de) * 2006-01-04 2008-05-08 Beru Ag Messglühkerze
US20070221647A1 (en) * 2006-03-23 2007-09-27 Federal-Mogul World Wide, Inc. Multi-layer heating element
JP4794338B2 (ja) * 2006-03-29 2011-10-19 京セラ株式会社 セラミックヒータ
DE102007027319A1 (de) * 2007-06-14 2008-12-18 Beru Ag Zündkerze und Verfahren zur Herstellung einer Zündkerze
US8183501B2 (en) * 2007-12-13 2012-05-22 Delphi Technologies, Inc. Method for controlling glow plug ignition in a preheater of a hydrocarbon reformer
MX2010007140A (es) * 2007-12-29 2010-08-12 Saint Gobain Ceramics Encendedor de ceramica coaxial y metodos de fabricacion.
US8820133B2 (en) * 2008-02-01 2014-09-02 Apple Inc. Co-extruded materials and methods
DE102008040339A1 (de) * 2008-07-11 2010-01-14 Robert Bosch Gmbh Glührohr, insbesondere für eine Glühstiftkerze
DE102008035036B3 (de) * 2008-07-26 2010-04-15 Beru Ag Keramische Glühkerze
DE102010045780A1 (de) * 2010-09-17 2012-03-22 Rohde & Schwarz Gmbh & Co. Kg Kalibriereinheit für ein Messgerät
EA201391073A1 (ru) 2011-01-25 2013-12-30 Оксан Материалз, Инк. Экструзионный способ получения расклинивающего агента
DE102011055283B4 (de) 2011-11-11 2016-06-23 Borgwarner Ludwigsburg Gmbh Glühkerze und Verfahren zum Herstellen eines Glühstifts
CN110759730A (zh) * 2018-07-25 2020-02-07 比亚迪股份有限公司 一种复合陶瓷的制备方法及复合陶瓷
CN112571583A (zh) * 2020-11-27 2021-03-30 珠海读书郎网络教育有限公司 一种导电陶瓷的挤出装置及挤出方法

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DE10353973B4 (de) * 2003-11-19 2006-08-17 Beru Ag Verfahren zum Herstellen eines keramischen Glühstiftes für eine keramische Glühkerze

Also Published As

Publication number Publication date
US7160584B2 (en) 2007-01-09
DE10353972B4 (de) 2006-03-16
KR20050048473A (ko) 2005-05-24
KR101169216B1 (ko) 2012-07-30
EP1533571A2 (fr) 2005-05-25
EP1533571A3 (fr) 2008-01-02
JP2005147654A (ja) 2005-06-09
US20050145613A1 (en) 2005-07-07
DE10353972A1 (de) 2005-06-02

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