EP1046013A1 - Ceramic sheathed-type glow plug - Google Patents
Ceramic sheathed-type glow plugInfo
- Publication number
- EP1046013A1 EP1046013A1 EP99969782A EP99969782A EP1046013A1 EP 1046013 A1 EP1046013 A1 EP 1046013A1 EP 99969782 A EP99969782 A EP 99969782A EP 99969782 A EP99969782 A EP 99969782A EP 1046013 A1 EP1046013 A1 EP 1046013A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- glow plug
- ring
- heating device
- combustion chamber
- 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.)
- Ceased
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- LNUFLCYMSVYYNW-ZPJMAFJPSA-N [(2r,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[[(3s,5s,8r,9s,10s,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-3-yl]oxy]-4,5-disulfo Chemical compound O([C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1C[C@@H]2CC[C@H]3[C@@H]4CC[C@@H]([C@]4(CC[C@@H]3[C@@]2(C)CC1)C)[C@H](C)CCCC(C)C)[C@H]1O[C@H](COS(O)(=O)=O)[C@@H](OS(O)(=O)=O)[C@H](OS(O)(=O)=O)[C@H]1OS(O)(=O)=O LNUFLCYMSVYYNW-ZPJMAFJPSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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 ceramic glow plug for diesel engines according to the preamble of the main claim.
- a glow plug is already known from DE-OS 3 837 128, in which a ceramic heating device is held by the tip of a cylindrical holder. The ceramic heater is electrically isolated from the holder.
- a ceramic heating device is held by the tip of a cylindrical holder.
- the ceramic heater is electrically isolated from the holder.
- connection device which is contacted with the supply voltage.
- the ceramic heating device consists of a U-shaped heating section, the two ends of the U-shaped heating section being contacted with the connection device via wires or sintered connections.
- a voltage is applied to the ceramic heating device, so that a current flows from one end of the U-shaped heating section over the combustion chamber-side tip of the heating section to the other end of the U-shaped heating section.
- the current causes the heating section to heat up due to the resistance of the ceramic, so that it glows and the fuel-air mixture is heated for ignition.
- the ceramic glow plug according to the invention with the features of the main claim has the advantage that by inserting a ceramic sleeve and a ring in the candle housing, this is filled and thus more stable, and that a sealant that is located between the distant end of the candle housing and when mounting the glow plug the ceramic heater is well compressed.
- the pressure applied from the opening remote from the combustion chamber is well transmitted to the ceramic heating device via the ring and the ceramic sleeve, so that the desired seating of the ceramic heating device in the metal housing is well ensured.
- production becomes easier and therefore cheaper.
- a ceramic sleeve is arranged in the candle housing. At the same time, this provides good insulation of the inner conductor arrangement, which is guided centrally through the ceramic sleeve. Otherwise, the ceramic sleeve can rest directly on the ceramic heating device.
- a shock-insensitive ring for example a metal ring, has the advantage that when the glow plug is assembled, a selective pressure applied to the metal ring is distributed well over the metal ring over the entire surface of the ceramic sleeve and onto the end surface of the ceramic heater remote from the combustion chamber. Due to the flat distribution of the applied compression pressure, the stress on the ceramic is minimized.
- the figure shows a longitudinal section through a ceramic glow plug.
- the glow plug consists of a cylindrical tubular metal housing, which the
- the candle housing 10 Represents candle housing 10. At its end 11 on the combustion chamber side, the candle housing 10 comprises a ceramic heating device 12.
- This ceramic heating device 12 is a glow plug embodied as a ceramic layer composite, which consists of an insulating composite ceramic layer 13 which is between two electrically conductive
- Composite ceramic layers 14 is there. At the tip of the ceramic heating device, the two electrically conductive composite ceramic layers 14 are connected by a thin web made of electrically conductive composite ceramic, so that the electrically conductive composite ceramic layers 14 are arranged essentially in a U-shape.
- the ceramic heater 12 also referred to as a glow plug, points in its cylindrical candle housing
- the glow pencil or the Ceramic heater 12 is mounted in the cylindrical candle housing 10 so that a cavity 17 is formed between the inner wall of the tubular metal housing 11 and the outer wall of the ceramic heater 12 in the region of the smaller diameter, which is filled with an electrically conductive, compressible material 18.
- This electrically conductive material 18 can be, for example, graphite, a metal powder, a powder mixture of ceramic and conductive particles or a hollow cylinder wound from graphite foil.
- the glow pencil is covered at least in the area in which it is surrounded by the candle housing 10 with an insulating layer 20, this insulating layer being produced by means of glazing.
- the area in which this insulating layer 20 is applied is hatched in the figure for better identification.
- a first and a second cutout 21 and 22 are made in the insulating layer 20 for the contacting of the electrically conductive composite ceramic layers.
- the first recess 21 is located on the front end of the glow plug, in such a way that the connecting bolt is contacted with one leg of the U-shaped electrically conductive ceramic.
- the second electrical contact takes place on the lateral outer wall of the second leg of the U-shaped, electrically conductive ceramic.
- This second recess 22 contacts the candle housing via the sealing compound 18, as can be seen in the figure.
- the cutouts are indicated in the figure with a dark area.
- the electrically conductive sealing material 18 is first introduced into the candle housing 10 in the form of a preform from the combustion chamber opening. Then the ceramic Heater 12 used. A ceramic sleeve 19 and a metal ring 20 are connected to the ceramic heating device 12 in the candle housing 10, far from the combustion chamber. After these individual elements have been inserted into the tubular metal housing, the glow plug is pressed into the end 11 of the candle housing on the combustion chamber side by means of force and the sealing material 18 is compressed in the process. The volume 17 of the cavity 17 is reduced during the compression process. The housing is then closed by means of a sealing ring 23. The connecting bolt of the inner conductor arrangement is guided through a central opening of the sealing ring. After a definite setting of a defined pressing force, the ring can be connected by a material, non-positive or positive connection
- Caulking, welding, press connection, screwing, soldering or gluing can be fixed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The invention relates to a ceramic sheathed-type glow plug. A tubular metallic housing at its combustion-chamber end carries a ceramic U-shaped heating element and its other end, away from the combustion chamber, has a connecting bolt for applying a voltage to the ceramic heating element. Inside the metallic housing a ceramic sleeve and a ring are joined to the ceramic heating element at the end away from the combustion chamber.
Description
Keramische GlühstiftkerzeCeramic glow plug
Stand der TechnikState of the art
Die Erfindung geht aus von einer keramischen Glühstiftkerze für Dieselmotoren nach der Gattung des Hauptanspruchs . Es ist schon eine solche Glühstiftkerze aus der DE-OS 3 837 128 bekannt, bei welcher eine keramische Heizvorrichtung von der Spitze eines zylindrischen Halters gehalten wird. Die keramische Heizvorrichtung ist hierbei gegen den Halter elektrisch isoliert. Auf der Seite des zylindrischenThe invention relates to a ceramic glow plug for diesel engines according to the preamble of the main claim. Such a glow plug is already known from DE-OS 3 837 128, in which a ceramic heating device is held by the tip of a cylindrical holder. The ceramic heater is electrically isolated from the holder. On the side of the cylindrical
Halters, die der keramischen Heizvorrichtung gegenüber liegt, ist eine Anschlußvorrichtung vorgesehen, welche mit der VersorgungsSpannung kontaktiert ist. Die keramische Heizvorrichtung besteht aus einem U-förmigen Heizabschnitt, wobei die beiden Enden des U-förmigen Heizausschnittes jeweils über Drähte bzw. eingesinterte Anschlüsse mit der Anschlußvorrichtung kontaktiert sind. Während eines Glühvorganges wird an die keramische Heizvorrichtung eine Spannung angelegt, so daß ein Strom von einem Ende des U- förmigen Heizabschnittes über die brennraumseitige Spitze des Heizabschnittes zum anderen Ende des U-förmigen Heizabschnittes fließt. Der Strom bewirkt aufgrund des Widerstandes der Keramik die Erwärmung des Heizabschnittes, so daß dieser glüht und das Brennstoff-Luft-Gemisch für eine Entzündung erwärmt wird.
Vorteile der ErfindungHolder, which is opposite the ceramic heater, a connection device is provided which is contacted with the supply voltage. The ceramic heating device consists of a U-shaped heating section, the two ends of the U-shaped heating section being contacted with the connection device via wires or sintered connections. During an annealing process, a voltage is applied to the ceramic heating device, so that a current flows from one end of the U-shaped heating section over the combustion chamber-side tip of the heating section to the other end of the U-shaped heating section. The current causes the heating section to heat up due to the resistance of the ceramic, so that it glows and the fuel-air mixture is heated for ignition. Advantages of the invention
Die erfindungsgemäße keramische Glühstiftkerze mit den Merkmalen des Hauptanspruchs hat den Vorteil, daß durch das Einfügen einer Keramikhülse und eines Ringes in das Kerzengehäuse dieses ausgefüllt und damit stabiler ist und daß bei der Montage der Glühstiftkerze eine Dichtmasse, die sich zwischen dem brennraumfemen Ende des Kerzengehäuses und der keramischen Heizvorrichtung befindet, gut verdichtet werden kann. Der von der brennraumfemen Öffnung her aufgebrachter Druck wird über den Ring und die Keramikhülse gut an die keramische Heizvorrichtung weitergegeben, so daß der gewünschte Sitz der keramischen Heizvorrichtung in dem Metallgehäuse gut gewährleistet wird. Die Fertigung wird letztendlich einfacher und damit kostengünstiger.The ceramic glow plug according to the invention with the features of the main claim has the advantage that by inserting a ceramic sleeve and a ring in the candle housing, this is filled and thus more stable, and that a sealant that is located between the distant end of the candle housing and when mounting the glow plug the ceramic heater is well compressed. The pressure applied from the opening remote from the combustion chamber is well transmitted to the ceramic heating device via the ring and the ceramic sleeve, so that the desired seating of the ceramic heating device in the metal housing is well ensured. Ultimately, production becomes easier and therefore cheaper.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen keramischen Glühstiftkerze möglich.The measures listed in the subclaims permit advantageous developments and improvements of the ceramic glow plug shown in the main claim.
Besonders vorteilhaft ist, daß an die keramischeIt is particularly advantageous that the ceramic
HeizVorrichtung anschließend zunächst eine Keramikhülse Im Kerzengehäuse angeordnet ist. Damit ist gleichzeitig eine gute Isolation der Innenleiteranordnung, welche zentral durch die Keramikhülse hindurchgeführt ist, gegeben. Im übrigen kann die Keramikhülse direkt auf der keramischen Heizvorrichtung aufsitzen. Die Verwendung eines stoßunempfindlichen Ringes beispielsweise eines Metallringes hat den Vorteil, daß beim Zusammenbau der Glühstiftkerze ein auf den Metallring aufgebrachter punktueller Druck sich über den Metallring gut auf die gesamte Fläche der Keramikhülse und auf die brennraumferne Stirnfläche der keramischen Heizvorrichtung verteilt. Durch die flächige Verteilung des
aufgebrachten Verdichtungsdruckes wird die Spannungsbelastung für die Keramik minimiert .Heating device is then first a ceramic sleeve is arranged in the candle housing. At the same time, this provides good insulation of the inner conductor arrangement, which is guided centrally through the ceramic sleeve. Otherwise, the ceramic sleeve can rest directly on the ceramic heating device. The use of a shock-insensitive ring, for example a metal ring, has the advantage that when the glow plug is assembled, a selective pressure applied to the metal ring is distributed well over the metal ring over the entire surface of the ceramic sleeve and onto the end surface of the ceramic heater remote from the combustion chamber. Due to the flat distribution of the applied compression pressure, the stress on the ceramic is minimized.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die einzige Figur zeigt eine erfindungsgemäße Glühstiftkerze .An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The single figure shows a glow plug according to the invention.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Die Figur zeigt einen Längsschnitt durch eine keramische Glühstiftkerze. Die Glühstiftkerze besteht aus einem zylindrischen rohrförmigen Metallgehäuse, welches dasThe figure shows a longitudinal section through a ceramic glow plug. The glow plug consists of a cylindrical tubular metal housing, which the
Kerzengehäuse 10 darstellt. Das Kerzengehäuse 10 umfaßt an seinem brennraumseitigen Ende 11 eine keramische Heizvorrichtung 12. Diese keramische Heizvorrichtung 12 ist ein als keramischer Schichtverbund ausgeführter Glühstift, welcher aus einer isolierenden Kompositkeramikschicht 13, die zwischen zwei elektrisch leitendenRepresents candle housing 10. At its end 11 on the combustion chamber side, the candle housing 10 comprises a ceramic heating device 12. This ceramic heating device 12 is a glow plug embodied as a ceramic layer composite, which consists of an insulating composite ceramic layer 13 which is between two electrically conductive
Kompositkeramikschichten 14 liegt, besteht. An der Spitze der keramischen Heizvorrichtung sind die beiden elektrisch leitenden Kompositkeramikschichten 14 durch einen dünnen Steg aus elektrisch leitender Kompositkeramik verbunden, so daß die elektrisch leitenden Kompositkeramikschichten 14 im wesentlichen u-förmig angeordnet sind.Composite ceramic layers 14 is there. At the tip of the ceramic heating device, the two electrically conductive composite ceramic layers 14 are connected by a thin web made of electrically conductive composite ceramic, so that the electrically conductive composite ceramic layers 14 are arranged essentially in a U-shape.
Die keramische Heizvorrichtung 12, auch mit Glühstift bezeichnet, weist in ihrem vom zylindrischen KerzengehäuseThe ceramic heater 12, also referred to as a glow plug, points in its cylindrical candle housing
10 umfaßten hinteren Abschnitt einen Bereich größeren Durchmessers 15 auf. Der Durchmesser dieses hinteren Abschnittes des Glühstiftes ist so gewählt, daß der Glühstift beim Zusammenbau der Glühstiftkerze im Gehäuse 10 verschiebbar ist. Der Glühstift beziehungsweise die
keramische Heizvorrichtung 12 wird im zylindrischen Kerzengehäuse 10 so montiert, daß sich zwischen der Innenwand des rohrförmigen Metallgehäuses 11 und der Außenwand der keramischen Heizvorrichtung 12 im Bereich des kleineren Durchmessers ein Hohlraum 17 bildet, der mit einem elektrisch leitfähigen, verdichtbarem Material 18 ausgefüllt ist. Dieses elektrisch leitfähige Material 18 kann beispielsweise Graphit, ein Metallpulver, eine Pulvermischung aus Keramik und leitfähigen Partikeln oder ein aus Graphitfolie gewickelter Hohlzylinder sein.10 comprised rear portion of a larger diameter area 15. The diameter of this rear section of the glow plug is selected so that the glow plug is displaceable in the housing 10 when the glow plug is assembled. The glow pencil or the Ceramic heater 12 is mounted in the cylindrical candle housing 10 so that a cavity 17 is formed between the inner wall of the tubular metal housing 11 and the outer wall of the ceramic heater 12 in the region of the smaller diameter, which is filled with an electrically conductive, compressible material 18. This electrically conductive material 18 can be, for example, graphite, a metal powder, a powder mixture of ceramic and conductive particles or a hollow cylinder wound from graphite foil.
Der Glühstift ist zumindest in dem Bereich, in welchem er vom Kerzengehäuse 10 umfaßt wird, mit einer isolierenden Schicht 20, wobei diese isolierende Schicht mittels Verglasen hergestellt ist, überzogen. Der Bereich, in welchem diese isolierende Schicht 20 aufgebracht ist, ist in der Figur zur besseren Kenntlichmachung schraffiert. In der isolierenden Schicht 20 sind für die Kontaktierung des der elektrisch leitenden Kompositkeramikschichten eine erste und eine zweite Aussparung 21 und 22 angebracht. Die erste Aussparung 21 befindet sich auf der brennraumfe en Stirnseite des Glühstiftes und zwar so, daß eine Kontaktierung des Anschlußbolzens mit einem Schenkel der u- förmigen elektrisch leitenden Keramik erfolgt . Der zweite elektrische Kontakt erfolgt an der seitlichen Außenwand des zweiten Schenkels der u-förmigen, elektrisch leitenden Keramik. Der Kontakt dieser zweiten Aussparung 22 mit dem Kerzengehäuse erfolgt über die Dichtmasse 18, wie dies der Figur zu entnehmen ist. Die Aussparungen sind in der Figur mit einer dunklen Fläche angegeben.The glow pencil is covered at least in the area in which it is surrounded by the candle housing 10 with an insulating layer 20, this insulating layer being produced by means of glazing. The area in which this insulating layer 20 is applied is hatched in the figure for better identification. A first and a second cutout 21 and 22 are made in the insulating layer 20 for the contacting of the electrically conductive composite ceramic layers. The first recess 21 is located on the front end of the glow plug, in such a way that the connecting bolt is contacted with one leg of the U-shaped electrically conductive ceramic. The second electrical contact takes place on the lateral outer wall of the second leg of the U-shaped, electrically conductive ceramic. This second recess 22 contacts the candle housing via the sealing compound 18, as can be seen in the figure. The cutouts are indicated in the figure with a dark area.
Bei der Montage der Glühstiftkerze wird zunächst das elektrisch leitende Dichtmaterial 18 von der brennraumfemen Öffnung her in das Kerzengehäuse 10 in Form eines Vorpreßlings eingebracht. Anschließend wird die keramische
HeizVorrichtung 12 eingesetzt. An die keramische Heizvorrichtung 12 schließt sich brennraumfern im Kerzengehäuse 10 eine Keramikhülse 19 und im weiteren ein Metallring 20 an. Nachdem diese einzelnen Elemente in das rohrförmige Metallgehäuse eingesetzt wurden, wird mittels Krafteinwirkung der Glühstift in das brennraumseitige Ende 11 des Kerzengehäuses eingepresst und dabei das Dichtmaterial 18 verdichtet. Während des Verdichtungsprozesses wird der Hohlraum 17 in seinem Volumen verkleinert. Anschließend wird das Gehäuse mittels eines Dichtringes 23 verschlossen. Wobei durch eine zentrale Öffnung des Dichtringes der Anschlußbolzen der Innenleiteranordnung geführt ist. Nach einer endgültigen Einstellung einer definierten Preßkraft kann der Ring durch eine stoff-, kraft- oder formschlüssige Verbindung wieWhen assembling the glow plug, the electrically conductive sealing material 18 is first introduced into the candle housing 10 in the form of a preform from the combustion chamber opening. Then the ceramic Heater 12 used. A ceramic sleeve 19 and a metal ring 20 are connected to the ceramic heating device 12 in the candle housing 10, far from the combustion chamber. After these individual elements have been inserted into the tubular metal housing, the glow plug is pressed into the end 11 of the candle housing on the combustion chamber side by means of force and the sealing material 18 is compressed in the process. The volume 17 of the cavity 17 is reduced during the compression process. The housing is then closed by means of a sealing ring 23. The connecting bolt of the inner conductor arrangement is guided through a central opening of the sealing ring. After a definite setting of a defined pressing force, the ring can be connected by a material, non-positive or positive connection
Verstemmen, Schweißen, Preßverbund, Verschrauben, Löten oder Kleben fixiert werden.
Caulking, welding, press connection, screwing, soldering or gluing can be fixed.
Claims
1. Keramische Glühstiftkerze mit einem rohrförmigen Metallgehäuse, welches an seinem brennraumseitigen Ende eine keramische, u-förmige Heizvorrichtung in Form eines Glühstiftes freitragend hält, mit einem auf der brennraumfemen Seite angeordneten Anschlußbolzen, welcher mit der keramischen Heizvorrichtung über eine Innenleiteranordnung elektrisch kontaktiert ist, dadurch gekennzeichnet, daß sich im rohrförmigen Metallgehäuse an die keramische Heizvorrichtung zunächst mmindestens eine isolierende Hülse (19) und anschließend an die mindestens eine isolierende Hülse (19) ein Ring (20) anschließt, wobei die Innenleiteranordnung zur Kontaktierung der keramischen Heizvorrichtung durch die mindestens eine isolierende Hülse (19) und den Ring (20) hindurchreicht.1. Ceramic glow plug with a tubular metal housing, which holds a ceramic, U-shaped heating device in the form of a glow plug at its combustion chamber end, with a connection bolt arranged on the side remote from the combustion chamber, which is electrically contacted with the ceramic heating device via an inner conductor arrangement, thereby characterized in that at least one insulating sleeve (19) and then at least one insulating sleeve (19) is followed by a ring (20) in the tubular metal housing, the inner conductor arrangement for contacting the ceramic heating device by the at least one insulating sleeve Sleeve (19) and the ring (20) passes through.
2. Keramische Glühstiftkerze nach Anspruch 1, dadurch gekennzeichnet, daß die mindestens eine isolierende Hülse eine Keramikhülse ist .2. Ceramic glow plug according to claim 1, characterized in that the at least one insulating sleeve is a ceramic sleeve.
3. Keramische Glühstiftkerze nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, die der Ring (20) aus einem stoßunempfindlichen Material besteht.3. Ceramic glow plug according to claim 1 and / or 2, characterized in that the ring (20) consists of a shock-resistant material.
4. Keramische Glühstiftkerze nach Anspruch 3 dadurch gekennzeichnet, daß der Ring (20) aus einem Metall besteht und der Durchmesser seiner Innenöffnung so gewählt ist, daß die Innenwand des Ringes nicht in Verbindung mit der Innenleiteranordnung steht.4. Ceramic glow plug according to claim 3, characterized in that the ring (20) consists of a metal and the diameter of its inner opening is selected so that the inner wall of the ring is not in connection with the inner conductor arrangement.
5. Keramische Glühstiftkerze nach Anspruch 4, dadurch gekennzeichnet, daß sich zwischen der Innenwand des Ringes und der Innenleiteranordnung ein Dielektrikum befindet.5. Ceramic glow plug according to claim 4, characterized in that there is a dielectric between the inner wall of the ring and the inner conductor arrangement.
6. Keramische Glühstiftkerze nach Anspruch 5, dadurch gekennzeichnet, daß als Dielektrikum ein Luftspalt vorgesehen ist. 6. Ceramic glow plug according to claim 5, characterized in that an air gap is provided as the dielectric.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19852785A DE19852785A1 (en) | 1998-09-28 | 1998-09-28 | Ceramic glow plug |
| DE19852785 | 1998-09-28 | ||
| PCT/DE1999/002877 WO2000019148A1 (en) | 1998-09-28 | 1999-09-10 | Ceramic sheathed-type glow plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1046013A1 true EP1046013A1 (en) | 2000-10-25 |
Family
ID=7887952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99969782A Ceased EP1046013A1 (en) | 1998-09-28 | 1999-09-10 | Ceramic sheathed-type glow plug |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6437492B1 (en) |
| EP (1) | EP1046013A1 (en) |
| JP (1) | JP2002525555A (en) |
| KR (1) | KR20010032452A (en) |
| DE (1) | DE19852785A1 (en) |
| SK (1) | SK7782000A3 (en) |
| WO (1) | WO2000019148A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19844347A1 (en) * | 1998-09-28 | 2000-03-30 | Bosch Gmbh Robert | Ceramic glow plug |
| DE19959768A1 (en) * | 1999-12-11 | 2001-06-13 | Bosch Gmbh Robert | Glow plug |
| JP4068309B2 (en) * | 2001-03-02 | 2008-03-26 | 日本特殊陶業株式会社 | Heater and manufacturing method thereof |
| JP2003059624A (en) * | 2001-08-10 | 2003-02-28 | Ngk Spark Plug Co Ltd | heater |
| DE10243017B4 (en) * | 2002-01-30 | 2013-08-22 | Robert Bosch Gmbh | Ceramic composite and glow plug with such a composite material |
| DE10343521A1 (en) * | 2003-09-19 | 2005-04-21 | Beru Ag | Pressure measuring glow plug for a diesel engine |
| DE102005017802A1 (en) * | 2005-04-18 | 2006-10-19 | Robert Bosch Gmbh | Glow plug with combustion chamber pressure sensor and sealing element |
| DE102005061879A1 (en) * | 2005-12-23 | 2007-07-05 | Robert Bosch Gmbh | Glowplug for engine pressure measurement has sealed cavity bounding end aperture of housing and containing sealant |
| US20090184101A1 (en) * | 2007-12-17 | 2009-07-23 | John Hoffman | Sheathed glow plug |
| US8164241B2 (en) * | 2008-08-15 | 2012-04-24 | Federal Mogul Ignition Company | Extension-type spark plug |
| DE102009028948A1 (en) * | 2009-08-27 | 2011-03-03 | Robert Bosch Gmbh | Glow plug for use in an internal combustion engine |
| JP5426755B2 (en) * | 2010-10-05 | 2014-02-26 | 日本特殊陶業株式会社 | Glow plug pin terminal and glow plug |
| US9644532B2 (en) * | 2015-04-14 | 2017-05-09 | Sheldon J. Demmons | Autonomous glow driver for radio controlled engines |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3146653C2 (en) * | 1981-02-07 | 1986-09-04 | Robert Bosch Gmbh, 7000 Stuttgart | Glow plug for internal combustion engines |
| US4418661A (en) * | 1981-02-07 | 1983-12-06 | Robert Bosch Gmbh | Glow plug, particularly for diesel engine |
| DE3817843A1 (en) * | 1987-05-29 | 1988-12-08 | Jidosha Kiki Co | GLOW PLUG FOR DIESEL ENGINES |
| DE3837128C2 (en) | 1987-11-05 | 1993-11-18 | Hitachi Metals Ltd | Glow plug for diesel engines |
| US5304778A (en) * | 1992-11-23 | 1994-04-19 | Electrofuel Manufacturing Co. | Glow plug with improved composite sintered silicon nitride ceramic heater |
| US6248980B1 (en) * | 1999-08-19 | 2001-06-19 | Delphi Technologies, Inc. | Ion sensor glow plug assembly |
-
1998
- 1998-09-28 DE DE19852785A patent/DE19852785A1/en not_active Withdrawn
-
1999
- 1999-09-10 EP EP99969782A patent/EP1046013A1/en not_active Ceased
- 1999-09-10 SK SK778-2000A patent/SK7782000A3/en unknown
- 1999-09-10 KR KR1020007005693A patent/KR20010032452A/en not_active Withdrawn
- 1999-09-10 US US09/555,333 patent/US6437492B1/en not_active Expired - Fee Related
- 1999-09-10 JP JP2000572618A patent/JP2002525555A/en active Pending
- 1999-09-10 WO PCT/DE1999/002877 patent/WO2000019148A1/en not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0019148A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010032452A (en) | 2001-04-25 |
| WO2000019148A1 (en) | 2000-04-06 |
| DE19852785A1 (en) | 2000-03-30 |
| SK7782000A3 (en) | 2000-10-09 |
| JP2002525555A (en) | 2002-08-13 |
| US6437492B1 (en) | 2002-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102006016566B4 (en) | Composite conductor, in particular for glow plugs for diesel engines | |
| DE69819583T2 (en) | Ceramic heater | |
| EP0049372B1 (en) | Spark plug for internal-combustion engines | |
| EP1046013A1 (en) | Ceramic sheathed-type glow plug | |
| DE3607888C2 (en) | ||
| DE3340359A1 (en) | METHOD FOR PRODUCING A CERAMIC RADIATOR AND CERAMIC GLOW PLUG | |
| EP1125475B1 (en) | Ceramic sheathed element glow plug | |
| DE3802233C2 (en) | ||
| DE3707814A1 (en) | GLOW PLUG FOR A DIESEL MACHINE | |
| DE3837128A1 (en) | Heater plug for diesel engines | |
| DE19920758C1 (en) | Glow plug and method of making the same | |
| DE19630208A1 (en) | Glow plug | |
| EP3027970B1 (en) | Sheathed-element glow plug having a ceramic heating element with an internal contact-making means, and production method therefor | |
| EP3247941A1 (en) | Sheathed glow plug | |
| DE10155230C5 (en) | Pen heater in a glow plug and glow plug | |
| EP1240461A1 (en) | Sheathed element heater plug | |
| DE69932684T2 (en) | Ceramic tip for glow sensor | |
| DD147391A5 (en) | ELECTRIC GLUE CANDLE FOR INTERNAL COMBUSTION ENGINES | |
| DE10152886A1 (en) | Ceramic heater | |
| EP1939527B1 (en) | Pencil-type glow plug | |
| DE10128656A1 (en) | Glow plug and process for its manufacture | |
| DE10130488B4 (en) | glow plug | |
| EP3189273A1 (en) | Glow plug | |
| DD235140A1 (en) | SPARK PLUG | |
| WO1987005682A1 (en) | Sheathed-element glow plug for diesel engines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: SI |
|
| 17P | Request for examination filed |
Effective date: 20001006 |
|
| 17Q | First examination report despatched |
Effective date: 20021113 |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 20040412 |