EP1267125B1 - Glow pin plug and method of production - Google Patents
Glow pin plug and method of production Download PDFInfo
- Publication number
- EP1267125B1 EP1267125B1 EP02004894A EP02004894A EP1267125B1 EP 1267125 B1 EP1267125 B1 EP 1267125B1 EP 02004894 A EP02004894 A EP 02004894A EP 02004894 A EP02004894 A EP 02004894A EP 1267125 B1 EP1267125 B1 EP 1267125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glow
- tube
- glow plug
- contact tube
- connection
- 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
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims 2
- 239000012212 insulator Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
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
-
- 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 a method for producing a rod glow plug according to the preamble of the claim.
- a stick glow plug to be produced by this method is known from DE-C-199 20 758 known.
- the heating elements In the case of multi-pole glow plugs, in particular those in which an ionization measurement can be carried out via the heating element surface, the heating elements must be installed in an insulated manner relative to the glow plug body. It is known for this purpose that the glow plug body consists of two separate components, which are coaxially arranged one inside the other and are fixed electrically isolated from each other, for example by glass fusion. The inner part serves as external pole of the heating element.
- the object of the invention is, bypassing the known from the prior art disadvantages to provide a method for producing a glow plug according to the preamble of the patent claim, with which it is possible to produce smaller glow plugs and secure contact, for example by means of coaxial plug with good mechanical stability of the glow plug and the contact connections is guaranteed.
- the object of the invention is achieved by the method specified in the claim.
- a heating rod 9 has a glow tube 3, in which a heating element 1, preferably in the form of a heating coil, optionally in conjunction with a control coil, embedded in insulating material 8 of the walls of the glow tube 3 is isolated is arranged.
- the combustion chamber end of the coil 1 is connected to the tip of the glow tube 3 contacting.
- the connection-side end of the coil 1 is connected to the inner pole 2, which is led out via the Polzuleiter 5 from the heating element.
- the length of the glow tube 3 usually corresponds to only about a third to a half of the total length of the glow plug.
- connection-side end portion of the glow tube 3 is isolated from the réellepolzuleiter 5, on the combustion chamber side end region.
- the intermediate insulating O-ring 4 serves for this purpose.
- a contact tube 6 is pushed or pushed into this and contacted with the end portion of the glow tube 3 contacting, for example, by Aufreduzi für the contact tube 6 on the glow tube 3.
- the contact tube 6 is up to the end of the glow plug body or led out of this and the end against the Polzuleiter 5, for example by an insulating O-ring 7, isolated, which simultaneously forms the seal of the cavity between the contact tube 6 and mecanicpolzuleiter 5; this cavity is filled with insulating material 8, for example magnesium oxide in powder form.
- contact tube 6 allows the use of different wall thicknesses and different materials for the said components;
- a glow tube with a wall thickness of about 1 mm can be used, for example, Inconel 601 or 6025 HT is used as a material, while the contact tube has a wall thickness of 0.5 mm and consists of a material that is not as high temperature resistant as the material of the glow tube must be.
- the extended heating element according to FIG. 1 is part of the glow plug design according to FIG. 2 ,
- the glow plug body 12 is insulated from the heating element arranged.
- an insulation 11.3, for example, ceramic, glass or high temperature resistant plastic is provided, while in the connection-side region of the body on an insulating seal 14 and the insulating 15, opposite the contact tube insulated, is arranged.
- connection sleeve 16 On the emerging from the terminal-side end portion of the body 12 region of the contact tube 6, a connection sleeve 16 is applied; which serves as a ground terminal, and is preferably designed for connection to a coaxial connector.
- the Polzuleiter / inner pole is the connection side designed as a positive terminal.
- an insulating layer 19 is applied in regions in order to provide a defined non-isolated region for ionization measurement at the glow plug tip.
- the glow plugs can be produced economically on the devices known per se in series; the assembly is very simple and at the same time very low concentricity tolerances can be maintained.
- the contact tube 6 is plugged onto the glow tube 3 of the heating element 9 and the cavity between the contact tube 6 and inner pole 2 / Polzuleiter 5 filled with insulating material, such as MgO 8, and sealed with an O-ring.
- insulating material such as MgO 8
- O-ring insulating material
- the inventive production of the glow plug ensures an electrically and mechanically stable contacting of the terminals; At the same time, it allows minimizing the diameter dimensions of the heating rod and the plug body and thus of the entire glow plug.
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)
- Materials For Medical Uses (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Stabglühkerze nach dem Gattungsbegriff des Patentanspruchs.The invention relates to a method for producing a rod glow plug according to the preamble of the claim.
Eine Stabglühkerze, die nach diesem Verfahren herzustellen ist, ist aus der
Bei mehrpoligen Glühkerzen, insbesondere bei solchen, bei denen über die Heizstaboberfläche eine Ionisationsmessung durchführbar ist, müssen die Heizstäbe isoliert zum Glühkerzenkörper eingebaut sein. Bekannt ist hierzu, dass der Glühkerzenkörper aus zwei getrennten Bauteilen besteht, die koaxial ineinander angeordnet und zum Beispiel durch Glaseinschmelzung elektrisch voneinander isoliert fixiert sind. Der innere Teil dient hierbei als Außenpol des Heizstabes.In the case of multi-pole glow plugs, in particular those in which an ionization measurement can be carried out via the heating element surface, the heating elements must be installed in an insulated manner relative to the glow plug body. It is known for this purpose that the glow plug body consists of two separate components, which are coaxially arranged one inside the other and are fixed electrically isolated from each other, for example by glass fusion. The inner part serves as external pole of the heating element.
Diese Ausführung ist jedoch technisch für kleinere Glühkerzen kaum realisierbar und das Herstellungsverfahren nicht mit den üblichen Herstellungsverfahren und -vorrichtungen durchführbar.However, this design is technically hardly feasible for smaller glow plugs and the manufacturing process can not be carried out with the usual manufacturing methods and devices.
Aufgabe der Erfindung ist es unter Umgehung der aus dem Stand der Technik bekannten Nachteile ein Verfahren zur Herstellung einer Stabglühkerze nach dem Gattungsbegriff des Patentanspruchs zur Verfügung zu stellen, mit dem es möglich ist, kleinere Glühkerzen herzustellen und ein sicheres Kontaktieren, beispielsweise mittels Koaxialsteckers bei guter mechanischer Stabilität der Glühkerze und der Kontaktverbindungen, gewährleistet ist.The object of the invention is, bypassing the known from the prior art disadvantages to provide a method for producing a glow plug according to the preamble of the patent claim, with which it is possible to produce smaller glow plugs and secure contact, for example by means of coaxial plug with good mechanical stability of the glow plug and the contact connections is guaranteed.
Die erfindungsgemäße Aufgabe wird durch das im Patentanspruch angegebene Verfahren gelöst.The object of the invention is achieved by the method specified in the claim.
Die Erfindung wird anhand der beigefügten Figuren näher erläutert. Hierbei zeigen
-
Figur 1 -
Figur 2 eine Glühkerze, teilweise im Längsschnitt.
-
FIG. 1 a heating element in partial longitudinal section; and -
FIG. 2 a glow plug, partly in longitudinal section.
Ein Heizstab 9 weist ein Glührohr 3 auf, in dem ein Heizelement 1, bevorzugt in Form einer Heizwendel, gegebenenfalls in Verbindung mit einer Regelwendel, die, in Isolierstoff 8 eingebettet von den Wandungen des Glührohrs 3 isoliert ist, angeordnet ist. Das brennraumseitige Ende der Wendel 1 ist mit der Spitze des Glührohres 3 kontaktierend verbunden. Das anschlussseitige Ende der Wendel 1 ist mit dem Innenpol 2, der über den Polzuleiter 5 aus dem Heizstab herausgeführt wird, verbunden.A
Die Länge des Glührohres 3 entspricht üblicherweise nur etwa einem Drittel bis einer Hälfte der Gesamtlänge der Stabglühkerze.The length of the
Der anschlussseitige Endbereich des Glührohres 3 liegt, gegenüber dem Innenpolzuleiter 5 isoliert, auf dessen brennraumseitigen Endbereich auf. Im vorliegenden Fall dient hierzu der zwischenliegende isolierende O-Ring 4.The connection-side end portion of the
Über den anschlussseitigen Endbereich des Glührohres 3 ist ein Kontaktrohr 6 aufgeschoben oder in dieses eingeschoben und mit dem Endbereich des Glührohres 3 kontaktierend fest verbunden, beispielsweise durch Aufreduzierung des Kontaktrohres 6 auf das Glührohr 3. Das Kontaktrohr 6 ist bis an das Ende des Glühkerzenkörpers bzw. aus diesem heraus geführt und endseitig gegen den Polzuleiter 5, beispielsweise durch einen isolierenden O-Ring 7, isoliert, der gleichzeitig die Abdichtung des Hohlraums zwischen Kontaktrohr 6 und Innenpolzuleiter 5 bildet; dieser Hohlraum ist mit Isolationsmaterial 8, beispielsweise Magnesiumoxid in Pulverform, verfüllt.About the terminal-side end portion of the
Die Kombination von Kontaktrohr 6 mit Glührohr 3 erlaubt die Verwendung unterschiedlicher Wandstärken und unterschiedliche Werkstoffe für die genannten Bauteile; so kann beispielsweise ein Glührohr mit einer Wandstärke von etwa 1 mm verwendet werden, wobei beispielsweise Inconel 601 bzw. 6025 HT als Material verwendet wird, während das Kontaktrohr eine Wandstärke von 0,5 mm aufweist und aus einem Werkstoff besteht, der nicht so hochtemperaturbeständig wie der Werkstoff des Glührohrs sein muss.The combination of
Der verlängerte Heizstab gemäß
Hierbei ist der Glühkerzenkörper 12 gegenüber dem Heizstab isoliert angeordnet. Im brennraumseitigen Bereich ist eine Isolation 11.3, beispielsweise aus Keramik, Glas oder hochtemperaturbeständigem Kunststoff vorgesehen, während im anschlussseitigen Bereich der Körper auf einer isolierenden Abdichtung 14 und der Isolierscheibe 15, gegenüber dem Kontaktrohr isoliert, angeordnet ist.Here, the
Auf dem aus dem anschlussseitigen Endbereich des Körpers 12 austretenden Bereich des Kontaktrohres 6 ist eine Anschlusshülse 16 aufgebracht; die als Masseanschluss dient, und bevorzugt zur Verbindung mit einem Koaxialstecker ausgebildet ist. Der Polzuleiter/Innenpol ist anschlussseitig als Plusanschluss ausgebildet.On the emerging from the terminal-side end portion of the
Auf dem brennraumseitigen Bereich des Glührohres ist bereichsweise eine Isolationsschicht 19 aufgebracht, um an der Glühkerzenspitze einen definierten nicht-isolierten Bereich zur Ionisationsmessung zur Verfügung zu stellen.On the combustion chamber side region of the glow tube, an
Die Glühkerzen können wirtschaftlich auf den an sich bekannten Vorrichtungen in Serie gefertigt werden; die Montage ist sehr einfach und gleichzeitig können sehr geringe Rundlauftoleranzen eingehalten werden.The glow plugs can be produced economically on the devices known per se in series; the assembly is very simple and at the same time very low concentricity tolerances can be maintained.
Bei der erfindungsgemäßen Herstellung wird das Kontaktrohr 6 auf das Glührohr 3 des Heizstabes 9 aufgesteckt und der Hohlraum zwischen Kontaktrohr 6 und Innenpol 2/Polzuleiter 5 mit Isolierstoff, beispielsweise MgO 8, gefüllt und mit einem O-Ring verschlossen. Durch an sich bekanntes Rundhämmern auf der Reduziermaschine wird das MgO 8 und Kontaktrohr 6 und Glührohr 3 so stark kaltverfestigt, dass sie eine unlösbare Verbindung ergeben.In the preparation according to the invention, the
Durch die erfindungsgemäße Herstellung der Glühkerze wird eine elektrisch und mechanisch stabile Kontaktierung der Anschlüsse gewährleistet; gleichzeitig erlaubt sie die Minimierung der Durchmessermaße von Heizstab und Kerzenkörper und damit der ganzen Glühkerze.The inventive production of the glow plug ensures an electrically and mechanically stable contacting of the terminals; At the same time, it allows minimizing the diameter dimensions of the heating rod and the plug body and thus of the entire glow plug.
Claims (1)
- Method for the manufacture of a pin-type glow plug having a glow plug body and, arranged therein, a heating rod (9) having a glow tube (3) in which a heating element (1) embedded in an insulating material (8) is arranged, which heating element (1) is connected, at the end on the connection side, to an inner pole (2) by way of an inner pole supply conductor (5) and, on the combustion chamber side, to the tip of the heating rod, there being arranged on the glow tube (3) a contact tube (6) whose length is so selected that its end on the connection side is guided as far as into the end region of the glow plug body on the connection side or out of it and is in the form of an earth connection for direct contacting, and the gap between the contact tube (6) and the inner pole supply conductor (5) being filled with an insulating material (8), characterised in that the contact tube (6) is placed on the glow tube (3) of the heating rod (9) and is reduced by swaging and, during that process, the contact tube (6), the glow tube (3) and the insulating material (8) are strain-hardened to form a permanent connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10128656 | 2001-06-15 | ||
| DE10128656A DE10128656A1 (en) | 2001-06-15 | 2001-06-15 | Glow plug and process for its manufacture |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1267125A2 EP1267125A2 (en) | 2002-12-18 |
| EP1267125A3 EP1267125A3 (en) | 2006-07-26 |
| EP1267125B1 true EP1267125B1 (en) | 2008-05-21 |
Family
ID=7688132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02004894A Expired - Lifetime EP1267125B1 (en) | 2001-06-15 | 2002-03-04 | Glow pin plug and method of production |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6649875B2 (en) |
| EP (1) | EP1267125B1 (en) |
| JP (1) | JP4204265B2 (en) |
| KR (2) | KR100953678B1 (en) |
| AT (1) | ATE396368T1 (en) |
| DE (2) | DE10128656A1 (en) |
| ES (1) | ES2302768T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050098136A1 (en) * | 2003-11-10 | 2005-05-12 | Visteon Global Technologies, Inc. | Architecture to integrate ionization detection electronics into and near a diesel glow plug |
| ATE544034T1 (en) * | 2004-09-15 | 2012-02-15 | Beru Ag | PRESSURE MEASUREMENT GLOW PLUG FOR A DIESEL ENGINE |
| KR20100078097A (en) * | 2008-12-30 | 2010-07-08 | 삼성전자주식회사 | Method of measuring thickness of a layer and method of forming a layer using the same |
| EP2469256B1 (en) * | 2010-12-22 | 2016-09-21 | HIDRIA AET Druzba za proizvodnjo vzignih sistemov in elektronike d.o.o. | Glow plug with a load sensor and a screened sensor link |
| US9534575B2 (en) * | 2013-07-31 | 2017-01-03 | Borgwarner Ludwigsburg Gmbh | Method for igniting a fuel/air mixture, ignition system and glow plug |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281451A (en) * | 1978-02-10 | 1981-08-04 | General Motors Corporation | Electric heater -method of making |
| US4425692A (en) * | 1981-03-23 | 1984-01-17 | Jidosha Kiki Co., Ltd. | Glow plug for use in diesel engine and method of manufacturing the same |
| JPS58138923A (en) * | 1982-02-12 | 1983-08-18 | Ngk Spark Plug Co Ltd | Two-wired type glow plug |
| JPH0814374B2 (en) * | 1986-02-10 | 1996-02-14 | 日本特殊陶業株式会社 | Method of manufacturing self-regulating glow plug |
| JPS6361662U (en) * | 1986-10-09 | 1988-04-23 | ||
| US6064039A (en) * | 1998-04-15 | 2000-05-16 | Ngk Spark Plug Co., Ltd. | Glow plug with small-diameter sheath tube enclosing heating and control coils |
| JP3737880B2 (en) * | 1998-04-15 | 2006-01-25 | 日本特殊陶業株式会社 | Glow plug |
| JP3655499B2 (en) * | 1998-08-11 | 2005-06-02 | 株式会社ボッシュオートモーティブシステム | Ceramic heater type glow plug and manufacturing method thereof |
| DE19920758C1 (en) * | 1999-05-05 | 2000-12-21 | Beru Ag | Glow plug and method of making the same |
| JP2001336468A (en) * | 2000-03-22 | 2001-12-07 | Ngk Spark Plug Co Ltd | Glow plug control device, grow plug, and detecting method of ion inside engine combustion chamber |
| DE10031893A1 (en) * | 2000-06-30 | 2002-01-10 | Bosch Gmbh Robert | Glow plug with ion current sensor and method for operating such a glow plug |
| DE60225618T3 (en) * | 2001-04-27 | 2014-04-30 | Ngk Spark Plug Co., Ltd. | Heating, glow plug and water heater |
| JP2002367760A (en) * | 2001-06-11 | 2002-12-20 | Ngk Spark Plug Co Ltd | Heater and glow plug |
-
2001
- 2001-06-15 DE DE10128656A patent/DE10128656A1/en not_active Ceased
-
2002
- 2002-03-04 DE DE50212284T patent/DE50212284D1/en not_active Expired - Lifetime
- 2002-03-04 ES ES02004894T patent/ES2302768T3/en not_active Expired - Lifetime
- 2002-03-04 AT AT02004894T patent/ATE396368T1/en not_active IP Right Cessation
- 2002-03-04 EP EP02004894A patent/EP1267125B1/en not_active Expired - Lifetime
- 2002-05-06 KR KR1020020024736A patent/KR100953678B1/en not_active Expired - Fee Related
- 2002-05-23 US US10/152,581 patent/US6649875B2/en not_active Expired - Fee Related
- 2002-06-14 JP JP2002174923A patent/JP4204265B2/en not_active Expired - Fee Related
-
2008
- 2008-06-30 KR KR1020080062845A patent/KR20080069564A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR100953678B1 (en) | 2010-04-20 |
| KR20080069564A (en) | 2008-07-28 |
| JP2003004230A (en) | 2003-01-08 |
| DE10128656A1 (en) | 2003-01-02 |
| JP4204265B2 (en) | 2009-01-07 |
| ATE396368T1 (en) | 2008-06-15 |
| EP1267125A2 (en) | 2002-12-18 |
| ES2302768T3 (en) | 2008-08-01 |
| US6649875B2 (en) | 2003-11-18 |
| DE50212284D1 (en) | 2008-07-03 |
| KR20020096871A (en) | 2002-12-31 |
| EP1267125A3 (en) | 2006-07-26 |
| US20020190050A1 (en) | 2002-12-19 |
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