EP0607592B1 - Bougie incandescente à flamme en forme de tige - Google Patents

Bougie incandescente à flamme en forme de tige Download PDF

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Publication number
EP0607592B1
EP0607592B1 EP93120529A EP93120529A EP0607592B1 EP 0607592 B1 EP0607592 B1 EP 0607592B1 EP 93120529 A EP93120529 A EP 93120529A EP 93120529 A EP93120529 A EP 93120529A EP 0607592 B1 EP0607592 B1 EP 0607592B1
Authority
EP
European Patent Office
Prior art keywords
rod
glow plug
coil
heating
control coil
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
EP93120529A
Other languages
German (de)
English (en)
Other versions
EP0607592A3 (fr
EP0607592A2 (fr
Inventor
Martin Eller
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.)
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
Original Assignee
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
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 Ruprecht GmbH and Co KG, Beru Werk Albert Ruprecht GmbH and Co KG filed Critical BERU Ruprecht GmbH and Co KG
Publication of EP0607592A2 publication Critical patent/EP0607592A2/fr
Publication of EP0607592A3 publication Critical patent/EP0607592A3/fr
Application granted granted Critical
Publication of EP0607592B1 publication Critical patent/EP0607592B1/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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs

Definitions

  • the invention relates to a rod flame glow plug for preheating the intake air of an internal combustion engine with auto-ignition according to the preamble of claim 1.
  • Such a rod flame glow plug which is known for example from DE-PS 40 07 340, is used to heat the intake air of an internal combustion engine with auto-ignition, for example a diesel engine, if starting problems would occur due to low temperatures during auto-ignition.
  • Rod flame glow plugs are known in versions with one or more heating rods and with single or multiple coil combinations of control and heating coils. If an electric voltage is applied to such a rod flame glow plug, then a current flows through the combination of control and heating coils, so that the heating coil, its resistance value is almost independent of the temperature is glowing first. The heating coil is protected against overheating by heating the control coil material, which has a positive resistance temperature coefficient and therefore reduces the current via its own resistance with increasing temperature.
  • control coils consist of pure nickel, i. H. Ni 99.9.
  • this material has a control behavior, i. H. a resistance behavior with regard to the curtailment of the current via the temperature, which leads to relatively long heating times.
  • the flat rise in the temperature curve which is responsible for the long heating-up time to the ignition temperature, does not meet the requirements for a quick start of the internal combustion engine, in particular within about 15 s, without a clock function when the generator voltage is applied.
  • control coil from a CoFe alloy in the case of a rod glow plug with at least one control coil and at least one heating coil which are connected in series with one another.
  • the heating and control filaments are also embedded in a filler made of MgO or AlN.
  • the object on which the invention is based is therefore to create a rod-type glow plug which has a shorter heating-up time up to the ignition temperature and does not have to be clocked in order to absorb the high voltages.
  • the resistance behavior with respect to the curtailment of the current against the temperature is significantly higher in the case of CoFe alloys than in the case of nickel, the resulting control factor being proportionally coupled to the temperature of the heating element.
  • the heating times of a rod flame glow plug with a control coil made of a CoFe alloy according to the invention and a control coil made of Ni are shown in comparison in FIG. 3 of the associated drawing.
  • a rod flame glow plug usually consists of a housing 12 with a fuel connection 13 with metering device and an electrical connection 14. Inside the housing 12 there is a heating rod which protrudes from the air-side end of the housing 12 and from there a protective tube 15 is surrounded, which connects axially to the air-side end of the housing 12. Inside the housing, the fuel supplied via the fuel connection 13 is heated, evaporated and finally ignited by means of the heating rod, which is supplied with electricity via the electrical connection 14.
  • Such a rod flame glow plug is arranged in the intake air flow of an internal combustion engine in such a way that the resulting flame heats the intake air. This makes it possible to start an internal combustion engine even at temperatures which are so low that starting problems would occur in the case of auto-ignition.
  • the heating element consists essentially of a glow tube 8, which is filled with a filling material 10 and in which at least one control coil 2 and a heating coil 1 are arranged, which are in the filling material 10 are embedded.
  • the coils 1, 2 are connected in series with one another and welded to one another at a welding point 5 and connected to the electrical connection, ie the inner pole 9 and, in the exemplary embodiment shown in FIG. 1, via a welding lens 7 to the glow tube 8 as a ground connection.
  • the heating filament consists of a material whose resistance value is almost constant over temperature, the heating filament glows 1 first.
  • the heating coil 1 which then has a positive temperature coefficient and thus reduces the current via its own resistance as the temperature rises, protects the heating coil 1 against overheating.
  • the control coil material is a CoFe alloy, preferably Co8Fe or Co25Fe.
  • the winding spacing in the front area 4 of the control coil 2 i. H. larger at the end of the heating coil than in the remaining area of the control coil 2, which causes the control coil 2 to be curbed later by heat dissipation.
  • the control coil wire changes the resistance via the temperature, the heat radiation or heat conduction of the heating coil 1 influences the control behavior of the control coil 2.
  • the jump, d. H. the distance between the turns at the interconnected ends of the control coil 2 and the heating coil 1 thus also contributes to the delay in the curtailment.
  • a larger winding spacing is provided than in the remaining area of the heating coil 1.
  • FIG. 2 shows a higher compression of the filling material 10 by additionally reducing 6 the glow tube at the glow rod tip.
  • This reduction in the tip of the glow tube 6 leads to a compression of the filler material 10 in the region of the first to third turns of the heating coil 1 and thus to an upsetting.
  • the winding spacing or jump 3 in the heating coil 1 prevents the coil 1 from contacting the glow tube 8 due to the reduction 6, and furthermore prevents an undefined opening of the double block 11 shown in FIG. 1 at the end of the heating coil.
  • the additional reduction with swelling of the heating wire of the heating coil 1 also results in a significantly longer service life, since the wire does not burn out as quickly due to the wire swelling.
  • the filling material 10, with which the glow tube 8 is filled and in which the regulating and heating coils 1, 2 are embedded, is at least partially, ie. H. at least in the area of the heating coil 1 made of AlN, d. H. a material with high heat conduction to ensure rapid heat dissipation from the heating coil 1 to the surface of the glow tube 8.
  • the filler material preferably consists of MgO, i.e. H. a material with poorer heat conduction than AlN, which has the result that on the one hand the heat of the heating coil 1 is rapidly dissipated to the outside, while on the other hand the heating of the control coil 2 is delayed by the heat of the heating coil 1.
  • the complete filling can also consist of AlN if the winding spacing 4 and the winding jump between the heating and control coil 1, 2 are adapted accordingly.
  • control coil consists of a CoFe alloy
  • a faster heating-up time and, at the same time, security against burnout are achieved by the strong reduction.
  • This effect is reinforced or supported by the fact that the winding spacings and the filling materials are selected in the manner indicated above.

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)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Catching Or Destruction (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Claims (8)

  1. Bougie de préchauffage à flamme, à tige chauffante, pour préchauffer l'air d'admission d'un moteur à combustion interne à auto-allumage, comportant
    - un carter (12) qui présente un raccord de carburant (13) avec dispositif de dosage et une borne électrique (14), et
    - au moins une tige chauffante qui est disposée dans le carter (12) et qui est formée d'un tube d'allumage (8), rempli d'un matériau de remplissage (10), et d'au moins un filament de régulation (2) et d'au moins un filament de chauffage (1) qui sont enrobés dans le matériau de remplissage (10) et sont reliés l'un et l'autre en série ainsi qu'à la borne électrique (14),
       caractérisée par le fait que le filament de régulation (2) est constitué d'un alliage CoFe et que l'écartement des spires du filament de régulation (2) dans la zone située du côté du filament de chauffage est supérieure à ce qu'elle est dans le reste du filament, de sorte que le comportement en régulation du filament de régulation (2) est retardé par évacuation de la chaleur par rapport à un filament de régulation à écartement des spires constant.
  2. Bougie de préchauffage à flamme, à tige chauffante, sclon la revendication 1, caractérisée par le fait que l'alliage CoFe est Co8Fe.
  3. Bougie de préchauffage à flamme, à tige chauffante, selon la revendication 1, caractérisée par le fait que l'alliage CoFe est Co25Fe.
  4. Bougie de préchauffage à flamme, à tige chauffante, selon l'une des revendications précédentes, caractérisée par le fait que le filament de chauffage (1) est soudé, à une extrémité, au tube d'allumage (8) et que l'écartement des spires du filament de chauffage (1) est plus grand au voisinage de cette extrémité que dans le reste du filament.
  5. Bougie de préchauffage à flamme, à tige chauffantc, selon l'une des revendications précédentes, caractérisée par le fait que le matériau de remplissage (10) est AlN au moins dans la zone du filament de chauffage.
  6. Bougie de préchauffage à flamme, à tige chauffante, selon la revendication 5, caractérisée par le fait que le matériau de remplissage est MgO dans la zone du filament de régulation.
  7. Bougie de préchauffage à flamme, à tige chauffante, selon la revendication 5, caractérisée par le fait que le matériau de remplissage est AlN, aussi bien dans la zone du filament de chauffage que dans la zone du filament de régulation et qu'il est prévu un matériau de remplissage en MgO entre les filaments de chauffage et de régulation.
  8. Bougie de préchauffage à flamme, à tige chauffante, selon l'une des revendications précédentes, caractérisée par une réduction du diamètre (6) de la pointe du tube d'allumage.
EP93120529A 1993-01-19 1993-12-20 Bougie incandescente à flamme en forme de tige Expired - Lifetime EP0607592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4301252A DE4301252A1 (de) 1993-01-19 1993-01-19 Stabflammglühkerze
DE4301252 1993-01-19

Publications (3)

Publication Number Publication Date
EP0607592A2 EP0607592A2 (fr) 1994-07-27
EP0607592A3 EP0607592A3 (fr) 1995-04-19
EP0607592B1 true EP0607592B1 (fr) 1997-07-09

Family

ID=6478456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120529A Expired - Lifetime EP0607592B1 (fr) 1993-01-19 1993-12-20 Bougie incandescente à flamme en forme de tige

Country Status (5)

Country Link
US (1) US5468933A (fr)
EP (1) EP0607592B1 (fr)
AT (1) ATE155222T1 (fr)
DE (2) DE4301252A1 (fr)
ES (1) ES2105062T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29506974U1 (de) * 1995-04-26 1995-07-06 Vacuumschmelze Gmbh, 63450 Hanau Material für die Regelwendel einer Glühstiftkerze
DE19630402C2 (de) * 1996-07-26 2000-12-28 Beru Ag Stabflammglühkerze
DE10041289B4 (de) * 2000-08-22 2005-05-04 Beru Ag Glühkerze
DE10248804A1 (de) * 2002-10-19 2004-04-29 Robert Bosch Gmbh Mehrfachwendel für Glühstiftkerzen
DE102005029837A1 (de) * 2005-06-27 2007-01-04 Robert Bosch Gmbh Glühstiftkerze
DE102008015402B3 (de) * 2008-03-22 2009-10-22 Beru Ag Glühkerze
DE102008015598A1 (de) * 2008-03-26 2009-10-01 Robert Bosch Gmbh Glühstiftkerze
DE102008043228A1 (de) * 2008-10-28 2010-04-29 Hilti Aktiengesellschaft Brennkraftbetriebenes Setzgerät
JP6279925B2 (ja) * 2014-02-14 2018-02-14 日本特殊陶業株式会社 グロープラグ
JP6537893B2 (ja) * 2015-05-28 2019-07-03 日本特殊陶業株式会社 グロープラグ
JP6771964B2 (ja) * 2015-10-30 2020-10-21 日本特殊陶業株式会社 グロープラグの製造方法及びグロープラグ
JP2019045109A (ja) * 2017-09-06 2019-03-22 日本特殊陶業株式会社 グロープラグ
JP7090570B2 (ja) * 2019-02-27 2022-06-24 日本特殊陶業株式会社 グロープラグ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773326A (en) * 1980-10-22 1982-05-08 Ngk Spark Plug Co Ltd Sheathed glow plug
DE4007340C1 (fr) * 1990-03-08 1990-10-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4010479A1 (de) * 1990-03-31 1991-10-02 Bosch Gmbh Robert Gluehstiftkerze fuer brennkraftmaschinen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035291A1 (de) * 1978-01-21 1982-04-22 Beru-Werk Albert Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg Gluehkerze
DE3136852A1 (de) * 1980-10-30 1982-06-16 Beru-Werk Albert Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg Flammgluehkerze fuer brennkraftmaschinen
DE3309133A1 (de) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Flammgluehstiftkerze zum vorwaermen der ansaugluft von brennkraftmaschinen
JPS61104582A (ja) * 1984-10-25 1986-05-22 株式会社デンソー シ−ズヒ−タ
JPS6237622A (ja) * 1985-08-07 1987-02-18 Nippon Denso Co Ltd デイ−ゼルエンジン用始動バ−ナ
GB2216952B (en) * 1988-03-16 1991-10-02 Wellman Automotive Products Li Glow plugs
GB2220446B (en) * 1988-04-06 1992-05-27 Champion Spark Plug Europ Glow plug for internal combustion engine
DE3825012A1 (de) * 1988-07-22 1990-01-25 Beru Werk Ruprecht Gmbh Co A Werkstoff fuer ein elektrisches widerstandselement mit positivem temperaturkoeffizienten
DE3825013A1 (de) * 1988-07-22 1990-01-25 Beru Werk Ruprecht Gmbh Co A Gluehkerze
DE8809396U1 (de) * 1988-07-22 1989-11-16 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Glühkerze
JPH0814376B2 (ja) * 1989-09-11 1996-02-14 自動車機器株式会社 自己温度制御型グロープラグ
JP2852552B2 (ja) * 1990-04-16 1999-02-03 自動車機器株式会社 シーズヒータおよびその製造方法
DE4014356A1 (de) * 1990-05-04 1991-11-07 Beru Werk Ruprecht Gmbh Co A Gluehkerze
DE4029185C2 (de) * 1990-09-14 1997-11-06 Vacuumschmelze Gmbh Glühkerze
JP2570481Y2 (ja) * 1991-05-30 1998-05-06 自動車機器株式会社 自己温度制御型グロープラグ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5773326A (en) * 1980-10-22 1982-05-08 Ngk Spark Plug Co Ltd Sheathed glow plug
DE4007340C1 (fr) * 1990-03-08 1990-10-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4010479A1 (de) * 1990-03-31 1991-10-02 Bosch Gmbh Robert Gluehstiftkerze fuer brennkraftmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 37 (M - 150) 18 August 1982 (1982-08-18) *

Also Published As

Publication number Publication date
US5468933A (en) 1995-11-21
ES2105062T3 (es) 1997-10-16
ATE155222T1 (de) 1997-07-15
DE59306880D1 (de) 1997-08-14
DE4301252A1 (de) 1994-07-21
EP0607592A3 (fr) 1995-04-19
EP0607592A2 (fr) 1994-07-27

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