EP0766044B1 - Material for a control coil of a flame glow plug - Google Patents
Material for a control coil of a flame glow plug Download PDFInfo
- Publication number
- EP0766044B1 EP0766044B1 EP96113009A EP96113009A EP0766044B1 EP 0766044 B1 EP0766044 B1 EP 0766044B1 EP 96113009 A EP96113009 A EP 96113009A EP 96113009 A EP96113009 A EP 96113009A EP 0766044 B1 EP0766044 B1 EP 0766044B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control coil
- heating
- alloy
- coil material
- 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
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
-
- 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 innovation concerns a rule spiral material for an in Control coil connected in series to a heating wire, one high temperature coefficient of electrical resistance has, so that the heating current is regulated when heating is used, especially for flame glow plugs in internal combustion engines, the control coil material being made of an iron and / or nickel-containing alloy.
- Such alloy are known, for example, from EP-A-0 351 883.
- a flame glow plug used to ignite the fuel a current-carrying heating coil in series a control coil is switched, which has a relatively high Has temperature coefficients of electrical resistance, is known from GB-A-254 482.
- Has temperature coefficients of electrical resistance is known from GB-A-254 482.
- Iron, nickel and platinum suggested and mentioned that suitable alloys can also be used.
- the task of the innovation is now a rule spiral material specify where a flame glow plug or one Glow plug with heating and control coil connected in series can be provided in which the material of the control coil still a high positive temperature coefficient of the resistance at which this But the material also has special corrosion resistance has, so that the use in aggressive Atmospheres such as B. in rooms with combustion gases without additional wrapping is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Description
Die Neuerung betrifft ein Regelwendelmaterial für eine in Reihe zu einem Heizdraht geschaltete Regelwendel, das einen hohen Temperaturkoeffizienten des elektrischen Widerstandes besitzt, so daß beim Aufheizen der Heizstrom abgeregelt wird, insbesondere für Flammglühkerzen in Verbrennungsmotoren, wobei das Regelwendelmaterial aus einer Eisen und/oder Nickel enthaltenden Legierung besteht. Solche Legierung sind bspw. nach der EP-A-0 351 883 bekannt.The innovation concerns a rule spiral material for an in Control coil connected in series to a heating wire, one high temperature coefficient of electrical resistance has, so that the heating current is regulated when heating is used, especially for flame glow plugs in internal combustion engines, the control coil material being made of an iron and / or nickel-containing alloy. Such alloy are known, for example, from EP-A-0 351 883.
Eine Flammglühkerze, bei der zur Entflammung des Kraftstoffes eine stromdurchflossene Heizwendel in Reihe zu einer Regelwendel geschaltet ist, die einen relativ hohen Temperaturkoeffizienten des elektrischen Widerstandes aufweist, ist aus GB-A-254 482 bekannt. Hier wird als Regelwendelmaterial mit relativ hohem Temperaturkoeffizienten Eisen, Nickel und Platin vorgeschlagen und erwähnt, daß auch passende Legierungen Verwendung finden können.A flame glow plug, used to ignite the fuel a current-carrying heating coil in series a control coil is switched, which has a relatively high Has temperature coefficients of electrical resistance, is known from GB-A-254 482. Here is used as a rule spiral material with a relatively high temperature coefficient Iron, nickel and platinum suggested and mentioned that suitable alloys can also be used.
Aufgabe der Regelwendel ist es dabei, zunächst bei geringem elektrischem Widerstand einen hohen Strom durch die Heizwendel zuzulassen, während bei Aufheizung von Heiz- und Regelwendel dieser Strom - bedingt durch die relativ starke Widerstandserhöhung der Regelwendel - abgeregelt wird, so daß eine kurze Aufheizzeit der Flammglühkerze erreicht wird, ohne daß ein zu hoher Strom die Heiz- und Regelwendel zerstört und ohne daß es erforderlich ist, eine separate Regelung oder Abschaltung des Stromes vorzunehmen. It is the task of the control coil, initially at low electrical resistance a high current through the heating coil allow while heating up heating and Regulating coil of this current - due to the relatively strong Resistance increase of the control coil - is curtailed, so that a short heating-up time of the flame glow plug is achieved will, without excessive current, the heating and control coil destroyed and without the need for a separate Control or switch off the current.
Der Nachteil der vorgeschlagenen Materialien für eine derartige Regelwendel besteht darin, daß die aggressiven, die Wendel umspülenden Gase relativ schnell zu einer Zerstörung des Regelwendelmaterials durch Oxidation führen.The disadvantage of the proposed materials for one Such a rule consists of the aggressive, the gases flowing around the coil relatively quickly lead to destruction of the control coil material through oxidation.
Aus DE-C-28 02 625 ist es dazu bekanntgeworden, eine Zerstörung der Wendel durch Verbrennungsgase dadurch zu vermeiden, daß man bei einer Glühkerze um Heiz- und Widerstandswendel einen Stab anordnet, der den direkten Kontakt der Wendel mit den Verbrennungsgasen verhindert.From DE-C-28 02 625 it has become known, a Destruction of the coil by combustion gases avoid having a glow plug around heating and Resistance coil arranges a rod that the direct Prevents contact of the filament with the combustion gases.
Insbesondere für Flammglühkerzen benötigt man jedoch eine relativ kleine Oberfläche mit genügend hoher Temperatur, um eine Entzündung des Kraftstoffes zu erreichen, so daß für diesen Anwendungszweck ein die Regel- und Heizwendel umgebender Stab nicht besonders gut geeignet erscheint.However, one is needed especially for flame glow plugs relatively small surface with a sufficiently high temperature to to achieve ignition of the fuel, so that for this application is a control and heating coil surrounding rod does not seem particularly well suited.
Aufgabe der Neuerung ist es nun, ein Regelwendelmaterial anzugeben, bei dem eine Flammglühkerze oder aber auch eine Glühkerze mit in Reihe geschalteter Heiz- und Regelwendel vorgesehen werden kann, bei dem das Material der Regelwendel nach wie vor einen hohen positiven Temperaturkoeffizienten des Widerstandes aufweist, bei dem dieses Material aber zusätzlich eine besondere Korrosionsfestigkeit besitzt, so daß auch der Einsatz in aggressiven Atmosphären, wie z. B. in Räumen mit Verbrennungsgasen ohne zusätzliche Umhüllung möglich ist.The task of the innovation is now a rule spiral material specify where a flame glow plug or one Glow plug with heating and control coil connected in series can be provided in which the material of the control coil still a high positive temperature coefficient of the resistance at which this But the material also has special corrosion resistance has, so that the use in aggressive Atmospheres such as B. in rooms with combustion gases without additional wrapping is possible.
Die Lösung der Aufgabe besteht darin, daß zur Erzielung
einer besonderen Korrosionsfestigkeit als Regelwendelmaterial
eine Legierung der Formel
Es hat sich gezeigt, daß bei einem Zusatz von 1 bis 2 Gew.-% Beryllium im Gegensatz zum Zusatz anderer Elemente, welche die Korrosionsbeständigkeit verbessern, eine besonders gute Korrosionsbeständigkeit erreicht und verhindert wird, daß der Widerstand bei kaltem Material ansteigt. Hierdurch ist es möglich, ein Widerstandsverhältnis von bis zu 7 bei 1000 °C, bezogen auf 20 °C zu verwirklichen. Besondere Vorteile ergeben sich, wenn man beim Erschmelzen der Legierung Zusätze von Elementen der Seltenen Erden vorsieht. Hier sind insbesondere die Elemente Cer, Yttrium, Lanthan, Hafnium und/oder Mischmetall von Vorteil.It has been shown that with an addition of 1 to 2 % By weight of beryllium in contrast to the addition of other elements, which improve corrosion resistance, achieved particularly good corrosion resistance and the resistance to cold material is prevented increases. This makes it possible to have a resistance ratio up to 7 at 1000 ° C, based on 20 ° C too realize. There are special advantages if you when melting the alloy additions of elements of Provides rare earths. Here are the elements in particular Cerium, yttrium, lanthanum, hafnium and / or mixed metal advantageous.
Claims (3)
- Control coil material for a control coil which is connected in series with a heating wire, which material has a high temperature coefficient of resistance, so that during heating the heating current is limited, in particular for flame heater plugs in internal-combustion engines, the control coil material consisting of an alloy which contains iron and/or nickel, characterized in that, in order to achieve a particular resistance to corrosion, the control coil material used is an alloy of the formula
- Control coil material according to Claim 1, characterized in that the alloy is melted with the addition of rare earth elements.
- Control coil material according to Claim 2, characterized in that cerium, yttrium, lanthanum, hafnium and/or composition metal is/are used as rare earth elements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29514507U DE29514507U1 (en) | 1995-09-09 | 1995-09-09 | Standard filament material for a flame glow plug |
| DE29514507U | 1995-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0766044A1 EP0766044A1 (en) | 1997-04-02 |
| EP0766044B1 true EP0766044B1 (en) | 1999-02-24 |
Family
ID=8012821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96113009A Expired - Lifetime EP0766044B1 (en) | 1995-09-09 | 1996-08-13 | Material for a control coil of a flame glow plug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0766044B1 (en) |
| JP (1) | JPH09112905A (en) |
| DE (2) | DE29514507U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4854459B2 (en) * | 2006-10-06 | 2012-01-18 | 住友電気工業株式会社 | Glow plug |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165425A (en) * | 1979-06-08 | 1980-12-23 | Nippon Denso Co Ltd | Preheating plug for engine |
| DE3923582C2 (en) * | 1988-07-22 | 1993-11-18 | Beru Werk Ruprecht Gmbh Co A | Glow plug |
| DE29506974U1 (en) * | 1995-04-26 | 1995-07-06 | Vacuumschmelze Gmbh | Material for the control coil of a glow plug |
-
1995
- 1995-09-09 DE DE29514507U patent/DE29514507U1/en not_active Expired - Lifetime
-
1996
- 1996-08-13 EP EP96113009A patent/EP0766044B1/en not_active Expired - Lifetime
- 1996-08-13 DE DE59601334T patent/DE59601334D1/en not_active Expired - Fee Related
- 1996-09-04 JP JP8252208A patent/JPH09112905A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE59601334D1 (en) | 1999-04-01 |
| DE29514507U1 (en) | 1995-11-02 |
| JPH09112905A (en) | 1997-05-02 |
| EP0766044A1 (en) | 1997-04-02 |
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