EP1279896A1 - Bougies à incandescence et procédé de fabrication - Google Patents

Bougies à incandescence et procédé de fabrication Download PDF

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Publication number
EP1279896A1
EP1279896A1 EP02013624A EP02013624A EP1279896A1 EP 1279896 A1 EP1279896 A1 EP 1279896A1 EP 02013624 A EP02013624 A EP 02013624A EP 02013624 A EP02013624 A EP 02013624A EP 1279896 A1 EP1279896 A1 EP 1279896A1
Authority
EP
European Patent Office
Prior art keywords
glow
plunge
glow tube
heating coil
tube
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
EP02013624A
Other languages
German (de)
English (en)
Other versions
EP1279896B1 (fr
Inventor
Paul Keller
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 EP1279896A1 publication Critical patent/EP1279896A1/fr
Application granted granted Critical
Publication of EP1279896B1 publication Critical patent/EP1279896B1/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
    • 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 methods for producing glow plugs and new glow plugs.
  • Glow plugs usually have a glow tube, in which a heating coil is arranged, which is embedded in a ceramic filling.
  • a heating coil is arranged, which is embedded in a ceramic filling.
  • the area is reduced in the so-called feed method, whereby either continuous cylinders or a linear taper to the heating rod tip are achieved.
  • the glow plug is inserted into the rotary hammer tool; for this purpose, the tools have an insertion bevel, the diameter being reduced by the rotary hammering process and the axial advance of the glow tube.
  • the object of the invention is to significantly improve the compression in the glow tube tip while avoiding the disadvantages known from the prior art; At the same time, a new shape of the glow tube tip area is intended to open up further possible uses, in particular the possibility of attaching further components.
  • an essential feature of the invention is to effect the compression or deformation by means of the plunge reduction method;
  • the glow tube is positioned in the tool so that the punches can act radially on the glow tube and compress the glow tube to the desired diameter, with a more uniform compression, since in this compression phase there is no axial feed, so that with only radial action the Tool stamp Material and filament of the glow tube cannot be moved axially.
  • a conventional glow plug has a glow tube 5 with an internal heating coil 4, which is embedded in a ceramic filling 3 and is connected to the glow tube 5 at the combustion chamber end by welding 6; at the opposite end the heating coil 4 is connected to the connection pole 1.
  • the front region 5a of the glow tube 5 on the combustion chamber side is reduced in a cylindrical manner by the known feed method.
  • a possible starting form is a glow rod according to FIG. 2 / 2.1 without additional tapering and without additional compression of the glow rod tip.
  • the glow rod tip can be reduced from the diameter D1 to the diameter D2 in the tip area by the method from the prior art.
  • FIG 4 the deformation of the combustion chamber-side region 5a of the glow tube 5 according to the invention is shown schematically in longitudinal section.
  • this area has a band-shaped constriction 12 directly above the glow tube tip.
  • This area is particularly highly compressed and, due to the proximity of the glow tube wall to the heating coil 4, leads to a band-shaped area 12 of particularly rapid heating when current flows through the heating coil 4.
  • FIG 4.1 also in a schematic longitudinal section, the manufacturing process of the glow plug according to the invention according to Figure 4 is shown; this is where Reduce plunge cut using plunge tool 8; the front surface 11 of the piercing tool 8 acting on the glow tube wall is divided into three flat areas which are angled with respect to one another.
  • the piercing tools 8 of the piercing device not shown, oscillate with a small stroke in the direction X as in the feed method, but without axial feed; A radial feed movement (X (v)) is superimposed on this movement, the diameter of the glow tube area being further reduced with each stroke. In this way, the glow tube area is deformed in accordance with the orientation of the front surface 11 of the piercing tool 8.
  • a fixed stop 9 prevents the material from escaping in the region of the glow tube tip.
  • the tool is chamfered or rounded in the edge areas to allow a certain movement of the material.
  • FIG. 4.2 shows a schematic view of a glow tube tip deformed according to the invention, which is produced with a tool according to FIG. 4.3 and has jaws of different lengths (11, 12, 13), W1 and W2 indicating the angulation of the front surfaces with respect to the direction of insertion.
  • FIG. 5 shows a schematic longitudinal section of the region 5a on the combustion chamber side of a glow tube 5 of another glow plug according to the invention, which has a groove-shaped constriction 12 above the glow tube tip; the plunge reduction method using plunge tools 8 with differently curved front surfaces 11 of different radii R 1 , R 2 and R 3 is shown in FIG. 5.1, reference being made here to the description of FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Spark Plugs (AREA)
EP02013624A 2001-07-23 2002-06-19 Bougies à incandescence et procédé de fabrication Expired - Lifetime EP1279896B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134956A DE10134956A1 (de) 2001-07-23 2001-07-23 Glühkerzen und Verfahren zu deren Herstellung
DE10134956 2001-07-23

Publications (2)

Publication Number Publication Date
EP1279896A1 true EP1279896A1 (fr) 2003-01-29
EP1279896B1 EP1279896B1 (fr) 2005-10-05

Family

ID=7692222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013624A Expired - Lifetime EP1279896B1 (fr) 2001-07-23 2002-06-19 Bougies à incandescence et procédé de fabrication

Country Status (7)

Country Link
US (1) US6753505B2 (fr)
EP (1) EP1279896B1 (fr)
JP (1) JP2003042450A (fr)
KR (1) KR100765414B1 (fr)
AT (1) ATE306053T1 (fr)
DE (2) DE10134956A1 (fr)
ES (1) ES2245712T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220235A1 (de) * 2014-10-07 2016-04-07 Robert Bosch Gmbh Heizkörper für eine elektrisch beheizbare Glühstiftkerze mit axial gepresstem Heizeinsatz, und zugehöriges Herstellungsverfahren

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7400193B2 (en) 2006-06-29 2008-07-15 Itt Manufacturing Enterprises, Inc. Ultra wide band, differential input/output, high frequency active splitter in an integrated circuit
JP5170894B2 (ja) * 2009-01-15 2013-03-27 日本特殊陶業株式会社 グロープラグ用のヒータチューブの製造方法及びグロープラグ
DE102010027468A1 (de) * 2010-07-17 2012-01-19 Borgwarner Beru Systems Gmbh Glühkerze
JP5965179B2 (ja) * 2012-03-29 2016-08-03 日本特殊陶業株式会社 グロープラグ及びその製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324627A2 (fr) * 1988-01-14 1989-07-19 Wellman Automotive Products Ltd Bougie à incandescence
EP0438097A1 (fr) * 1990-01-16 1991-07-24 B 80 S.r.l. Bougie à incandescence pour moteurs diesel, en particulier pour véhicules automobiles comportant une gaine avec une réduction de diamètre de l'extrémité fermée
JP2000111048A (ja) * 1998-10-09 2000-04-18 Ngk Spark Plug Co Ltd グロープラグ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021539B2 (ja) * 1978-08-08 1985-05-28 共同印刷株式会社 複合チユ−ブ及びその製法
EP0404570B1 (fr) * 1989-06-21 1995-02-15 Ngk Spark Plug Co., Ltd Procédé de fabrication d'un corps tubulaire
DE3925452C1 (fr) * 1989-08-01 1991-04-25 Gebr. Felss Gmbh + Co Kg, 7535 Koenigsbach-Stein, De
DE8909893U1 (de) * 1989-08-18 1990-12-20 Robert Bosch Gmbh, 7000 Stuttgart Glühstiftkerze
US5251589A (en) * 1992-03-16 1993-10-12 Wellman Automotive Products, Inc. Hot tip glow plug and method for making
US5304778A (en) * 1992-11-23 1994-04-19 Electrofuel Manufacturing Co. Glow plug with improved composite sintered silicon nitride ceramic heater
JP2002192417A (ja) * 2000-12-26 2002-07-10 Nikon Corp 溝加工装置およびこの溝加工装置を用いた溝加工方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324627A2 (fr) * 1988-01-14 1989-07-19 Wellman Automotive Products Ltd Bougie à incandescence
EP0438097A1 (fr) * 1990-01-16 1991-07-24 B 80 S.r.l. Bougie à incandescence pour moteurs diesel, en particulier pour véhicules automobiles comportant une gaine avec une réduction de diamètre de l'extrémité fermée
JP2000111048A (ja) * 1998-10-09 2000-04-18 Ngk Spark Plug Co Ltd グロープラグ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 07 29 September 2000 (2000-09-29) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220235A1 (de) * 2014-10-07 2016-04-07 Robert Bosch Gmbh Heizkörper für eine elektrisch beheizbare Glühstiftkerze mit axial gepresstem Heizeinsatz, und zugehöriges Herstellungsverfahren

Also Published As

Publication number Publication date
JP2003042450A (ja) 2003-02-13
EP1279896B1 (fr) 2005-10-05
DE10134956A1 (de) 2003-02-20
ATE306053T1 (de) 2005-10-15
US6753505B2 (en) 2004-06-22
KR100765414B1 (ko) 2007-10-11
DE50204443D1 (de) 2005-11-10
US20030034343A1 (en) 2003-02-20
KR20030011609A (ko) 2003-02-11
ES2245712T3 (es) 2006-01-16

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