EP2201298A2 - Bougie de préchauffage du type optimisé par cokéfaction - Google Patents

Bougie de préchauffage du type optimisé par cokéfaction

Info

Publication number
EP2201298A2
EP2201298A2 EP08801195A EP08801195A EP2201298A2 EP 2201298 A2 EP2201298 A2 EP 2201298A2 EP 08801195 A EP08801195 A EP 08801195A EP 08801195 A EP08801195 A EP 08801195A EP 2201298 A2 EP2201298 A2 EP 2201298A2
Authority
EP
European Patent Office
Prior art keywords
glow plug
annular gap
space
cylinder head
internal combustion
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
EP08801195A
Other languages
German (de)
English (en)
Other versions
EP2201298B1 (fr
Inventor
Karsten Volland
Bernd Last
Hans Houben
Dirk Von Hacht
Frank Pechhold
Christian Pottiez
Michael Haussner
Ralf Ehlert
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
BorgWarner Beru Systems 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 BorgWarner Beru Systems GmbH filed Critical BorgWarner Beru Systems GmbH
Publication of EP2201298A2 publication Critical patent/EP2201298A2/fr
Application granted granted Critical
Publication of EP2201298B1 publication Critical patent/EP2201298B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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.
  • glow plugs are known for. B. from DE 10346295. This is disadvantageous that takes place during normal operation of the glow plugs in an internal combustion engine, coking of the glow plugs between the heating element and cylinder head and in the annular gap of the glow plug, thereby causing problems in disassembly of the mounted in the cylinder head glow plugs and Drucksensorglühkerzen , as well as the heat conduction on or in the glow plug.
  • Figure 1 Installation situation of the glow plug with volume in the cylinder head according to the
  • FIG. 3 glow plug with varied volume and two-part body
  • FIG. 5 Volume and annular gap Description
  • FIG. 8 pressure sensor
  • FIG. 2 shows a glow plug arranged in a cylinder head 5, which has an annular gap 3 arranged between heating rod 1 and body 2 of the glow plug and a space 4 adjoining the annular gap 3, which communicates with the combustion chamber of the internal combustion engine in the manner of an annular gap 3, that oxygen-containing gas enters the room 4.
  • annular gap 3 and the space 4 there is the possibility of a volume flow from the combustion chamber of the internal combustion engine in the space 4, which ensures a reliable gas exchange and thus for a sufficient oxygen content in the contact surfaces between the cylinder head and glow plug.
  • very high temperatures are achieved in the annular gap 3 and in the free space 4 by means of oxidative processes. As a result of these high temperatures, the carbon present in this region is burned, which thus can not be deposited in the region relevant for trouble-free operation of an internal combustion engine.
  • this annular gap 3 / free space 4 combination is provided for movably holding the heating element 1.
  • a corresponding volume can be achieved, which in a particularly advantageous embodiment comprises approximately 140 mm 3 in order to allow sufficient combustion gas flow.
  • the defined annular gap 3 and the corresponding free space 4, which allows a volume as described above for gas exchange during the combustion process, is based on the principle of the so-called Helmholtz resonator.
  • the volume of the hollow Helmholtz hollow body is composed of the annular gap volume formed from b and c.
  • the radius of the Helmholtz tube results, as can likewise be seen in FIG. 5, from the dimension at the annular gap 3, the inner length of the annular gap 3 corresponding to the length of the tube 1 of the Helmholtz formula.
  • the effect can be enhanced by a targeted and advantageous coating of the surfaces with a catalytically active material.
  • a platinum coating is particularly advantageous here.
  • At least one element such as the bellows consists of a catalyst-containing coating and / or material pairing in order to lower the ignition temperature for combustion residues.
  • Suitable catalyst materials are, for example, platinum and / or palladium, cerium iron, Raney nickel, rhodium, hopkalite, vanadium pentoxide and samarium oxide. Any other element of the described glow plug may also be catalyst coated. In temperature measurements with the described inventive configurations, temperatures were measured at which the carbon burns without residue.
  • FIG. 2 shows a glow plug arranged in a cylinder head 5, which has an annular gap 3 arranged between heating rod 1 and body 2 of the glow plug and a space 4 adjoining the annular gap 3, which communicates with the combustion chamber of the internal combustion engine in the manner of an annular gap 3 in that oxygen-containing gas enters the room 4.
  • annular gap 3 and the space 4 there is the possibility of a volume flow from the combustion chamber of the internal combustion engine in the space 4, which ensures a reliable gas exchange and thus for a sufficient oxygen content in the contact surfaces between the cylinder head and glow plug.
  • the annular gap 3 and in the free space 4 by means of complete combustion temperatures above 600 degrees or less, when a corresponding catalyst surface is present, Celsius is reached. As a result of these high temperatures, the carbon present in this region is burned, which thus can not be deposited in the region relevant for trouble-free operation of an internal combustion engine.
  • FIG. 3 shows a glow plug arranged in a cylinder head 5, which has an annular gap 3 arranged between heating rod 1 and two-part body 2 of the glow plug and a space 4 adjoining the annular gap 3, which communicates with the combustion chamber of the fuel-cell engine by means of annular gap 3 in such a way in that oxygen-containing gas enters the room 4.
  • annular gap 3 and the space 4 there is the possibility of a volume flow from the combustion chamber of the internal combustion engine in the space 4, which ensures a reliable gas exchange and thus for a sufficient oxygen content in the contact surfaces between the cylinder head and glow plug.
  • very high temperatures are achieved in the annular gap 3 and in the free space 4 by means of oxidative processes. As a result of these high temperatures, the carbon present in this region is also burned, which thus can not be deposited in the region relevant for trouble-free operation of an internal combustion engine.
  • a glow plug arranged in a cylinder head 5, which is arranged between heating element 1 and body 2 of the glow plug, with the additional space 8, whose length is attributable to the length of the tube in the Helmholtz formula, annular gap 3 whose radius corresponds to the radius of the Pipe corresponds in the Helmholtz formula and has a subsequent to the annular gap 3 space 4, which communicates by means of annular gap 3 with the combustion chamber of the internal combustion engine in such a way that oxygen-containing gas enters the room 4 shown.
  • the free space 4 is produced by a two-part body 2, 2a, as shown in FIG. 7, by means of the body upper part (2) and body lower part (2a), wherein the body parts 2, 2a are arranged around the heating bar 1.
  • FIG. 6 shows a movable heating element 1 with a bellows 7, which together with the body 2 produces a glow plug in a cylinder head 5. Between body 2 and heating element 2 there is an annular gap 3. The bellows 7 is arranged in a movable space 4. The space 4 and the annular gap 3 communicate with the combustion chamber arranged in the cylinder head 5, which also is not expressly shown, internal combustion engine.
  • FIG. 8 shows a pressure sensor which, as shown in FIG. 6, is arranged in a cylinder head 5 of an internal combustion engine (not shown).
  • the pressure sensor comprises a two-part housing 2, 2a, which may also be in one piece, as shown in FIG.
  • a bellows 7 between the housing 2 and push rod Ia is arranged thereon, that the push rod Ia is movable together with the bellows 7 substantially along its longitudinal axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Resistance Heating (AREA)

Abstract

Bougie de préchauffage utilisée notamment dans un moteur à combustion interne, caractérisée en ce qu'elle comprend au moins une tige de chauffe (1) et au moins un corps (2), et au moins une fente annulaire (3) disposée entre la tige de chauffe (1) et le corps (2), et au moins un espace (4) disposé sensiblement entre la tige de chauffe (1) et le corps (2).
EP08801195.2A 2007-09-19 2008-08-21 Bougie de préchauffage du type optimisé en réduction de cokéfaction Not-in-force EP2201298B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044967A DE102007044967A1 (de) 2007-09-19 2007-09-19 Glühkerze mit verkokungsoptimiertem Design, spezielle Ringspaltausbildung
PCT/DE2008/001372 WO2009036724A2 (fr) 2007-09-19 2008-08-21 Bougie de préchauffage du type optimisé par cokéfaction

Publications (2)

Publication Number Publication Date
EP2201298A2 true EP2201298A2 (fr) 2010-06-30
EP2201298B1 EP2201298B1 (fr) 2015-03-04

Family

ID=40364418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801195.2A Not-in-force EP2201298B1 (fr) 2007-09-19 2008-08-21 Bougie de préchauffage du type optimisé en réduction de cokéfaction

Country Status (7)

Country Link
US (1) US8479697B2 (fr)
EP (1) EP2201298B1 (fr)
KR (1) KR20100069654A (fr)
CN (1) CN101828076A (fr)
DE (1) DE102007044967A1 (fr)
RU (1) RU2480676C2 (fr)
WO (1) WO2009036724A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010011044B4 (de) * 2010-03-11 2012-12-27 Borgwarner Beru Systems Gmbh Verfahren zum Regeln einer Glühkerze
GB2500215B (en) * 2012-03-12 2018-07-11 Gm Global Tech Operations Llc Design optimization for an in-cylinder sensor seat
JP5965181B2 (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
EP2884180B1 (fr) * 2012-08-09 2016-12-21 Bosch Corporation Bougie de préchauffage du type capteur de pression
DE102013111922B4 (de) 2013-10-29 2016-04-14 Borgwarner Ludwigsburg Gmbh Glühkerze
JP2015190689A (ja) * 2014-03-28 2015-11-02 日本特殊陶業株式会社 内燃機関
JP6225925B2 (ja) * 2015-01-28 2017-11-08 トヨタ自動車株式会社 内燃機関

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307109A1 (de) * 1982-08-14 1984-03-15 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum einspritzen von kraftstoff in brennraeume von insbesondere selbstzuendenen brennkraftmaschinen
DE19506711C1 (de) * 1995-02-25 1996-05-09 Beru Werk Ruprecht Gmbh Co A Flammglühkerze für eine Dieselbrennkraftmaschine
DE19506950C2 (de) * 1995-02-28 1998-07-23 Bosch Gmbh Robert Glühstiftkerze für Dieselmotoren
DE19849120C2 (de) * 1998-10-23 2000-09-28 Beru Ag Glühkerze
JP4121342B2 (ja) * 2001-11-13 2008-07-23 日本特殊陶業株式会社 クロメート被膜付きプラグ用金属部品及びその製造方法
RU2229062C2 (ru) * 2002-08-20 2004-05-20 Общество с ограниченной ответственностью "Общемаш" Запальная горелка с калильным зажиганием
JP3900059B2 (ja) 2002-10-07 2007-04-04 株式会社デンソー 燃焼センサ付きグロープラグおよび燃焼圧センサ付きグロープラグの取付構造ならびに取付方法
DE102004044727A1 (de) * 2003-09-19 2006-03-16 Beru Ag Druckmessglühkerze für einen Dieselmotor
DE102004011098A1 (de) * 2004-03-06 2005-09-22 Robert Bosch Gmbh Vorrichtung zur Erfassung des Brennraumdrucks bei einer Brennkraftmaschine
FR2869393B1 (fr) * 2004-04-27 2006-07-14 Siemens Vdo Automotive Sas Dispositif pour agir sur un capteur de pression monte sur une bougie de prechauffage
EP1637806B1 (fr) * 2004-09-15 2012-02-01 Beru AG Bougie de préchauffage avec capteur de pression pour moteur diesel
DE102004045383A1 (de) 2004-09-18 2006-03-23 Robert Bosch Gmbh Glühkerze mit Brennraumdrucksensor
DE102004063750A1 (de) 2004-12-29 2006-07-13 Robert Bosch Gmbh Glühstiftkerze mit integriertem Brennraumdrucksensor
EP1856497B1 (fr) 2005-02-24 2014-08-20 Kistler Holding AG Composant pour capteurs de force ou de pression, dont les elements sont maintenus les uns avec les autres par un film electro-isolant
DE102005015569A1 (de) * 2005-04-05 2006-10-12 Robert Bosch Gmbh Keramisches Widerstands- oder Sensorelement
DE102005042667A1 (de) * 2005-09-08 2007-03-15 Robert Bosch Gmbh Druckmesseinrichtung
DE102006008350A1 (de) 2006-02-21 2007-08-30 Robert Bosch Gmbh Druckmesseinrichtung

Non-Patent Citations (1)

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Title
See references of WO2009036724A2 *

Also Published As

Publication number Publication date
WO2009036724A2 (fr) 2009-03-26
RU2480676C2 (ru) 2013-04-27
RU2010115078A (ru) 2011-10-27
US8479697B2 (en) 2013-07-09
CN101828076A (zh) 2010-09-08
DE102007044967A1 (de) 2009-04-02
US20100236512A1 (en) 2010-09-23
KR20100069654A (ko) 2010-06-24
EP2201298B1 (fr) 2015-03-04
WO2009036724A3 (fr) 2009-06-11

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