EP0812410B1 - Glühstiftkerze für dieselmotoren - Google Patents
Glühstiftkerze für dieselmotoren Download PDFInfo
- Publication number
- EP0812410B1 EP0812410B1 EP96900879A EP96900879A EP0812410B1 EP 0812410 B1 EP0812410 B1 EP 0812410B1 EP 96900879 A EP96900879 A EP 96900879A EP 96900879 A EP96900879 A EP 96900879A EP 0812410 B1 EP0812410 B1 EP 0812410B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating device
- ceramic heating
- glow plug
- section
- cross
- 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
- 239000000919 ceramic Substances 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 13
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 13
- 239000000203 mixture Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 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
Definitions
- the invention is based on a glow plug for diesel engines with a ceramic heater of the genus Main claim. It is already such a glow plug from the DE-OS 38 37 128 known in which a ceramic heater held by the tip of a cylindrical holder becomes. The ceramic heater is against the Electrically insulated holder. On the side of the cylindrical Holder facing the ceramic heater a connection device is provided which is connected to the supply voltage is contacted.
- the ceramic heater consists of a U-shaped heating section. The both ends of the U-shaped heating section are each with contacted the connecting device.
- a voltage is applied to the ceramic heater applied such that a current flows through the ceramic heating section from one end of the U-shaped heating section over the combustion chamber tip of the heating section flows to the other end of the U-shaped heating section.
- the Electricity causes heating due to the resistance of the ceramic of the heating section so that it glows and that Can ignite fuel-air mixture.
- the glow plug according to the invention with the characteristic Features of the main claim has the advantage that the area the heater most accessible to the combustible mixture because of the greater resistance the fastest way to reach the necessary ignition temperature. Thereby shorter heating times are possible.
- the increase in resistance by reducing the cross section of the electrical conductive ceramic allows a ceramic Use a heating element with a slightly thicker wall, that then only to the desired one, from the design of the engine dependent points has a reduced cross section. As a result, the mechanical strength in particular ceramic heating section can be increased.
- FIG. 1 shows a first embodiment the glow plug according to the invention
- Figure 2 shows a second Embodiment
- Figure 3 shows a third embodiment
- Figure 4 shows schematically two possible installation variants of a glow plug in the swirl chamber of an internal combustion engine.
- FIG. 1 shows a longitudinal section through a first embodiment the invention.
- the glow plug is here from a cylindrical metal tube 1.
- This cylindrical Metal tube represents the housing of the glow plug and serves by a thread 2 on the outside for screwing in in the engine block.
- the cylindrical metal tube also serves as a holder for the glow plug, which in the Combustion chamber protrudes and here for heating the diesel mixture provides.
- a ceramic heating device 3 as a glow plug, whose head end serves as a heating element.
- the housing is so in the, not shown Engine block of an internal combustion engine screwed in that the end of the ceramic heater 3 in a cantilever Condition in a combustion chamber of the internal combustion engine protrudes.
- the ceramic heater 3 is made here made of a U-shaped electrically conductive ceramic.
- the rear end of the cylindrical metal tube 1 includes a connecting bolt 4, which by means of an insulation layer 5 electrically opposite the cylindrical metal tube 1 is isolated.
- the connecting bolt 4 is in turn a contact 6 with the ceramic heater 3 in the kind contacted that the contact in the closed combustion chamber side Ceramic heater bottom electric is contacted.
- Ceramic heater 3 is on its peripheral surface held by the cylindrical metal tube with the cylindrical metal tube 1 electrically contacted, so that the bottom of the ceramic chamber Heating device 3 on the one hand with the supply voltage, which, for example, of the battery, not shown a motor vehicle is delivered, connected and on the other hand via the cylindrical metal tube 1 with mass is contacted.
- the wall thickness The ceramic heater is not about that entire ceramic heater the same. Rather, it is Wall thickness in the cantilevered end of the ceramic Heater 3 less than at its edge. This causes the resistance on the combustion chamber side the ceramic heater increased so that at at this point the ceramic heater glows first.
- Figure 2 shows the longitudinal section of a second embodiment the invention.
- the glow plug of Figure 2 corresponds in principle Structure of the design of Figure 1, which is why provide the individual details with the same reference numerals are and the structure for the same details not again to be explained.
- the embodiment according to FIG. 2 is also the cross-sectional area of the ceramic heater reduced on the far side of the holder.
- Figure 1 were here in the wall of the ceramic Heater recesses 7 introduced. With the Number, the diameter and the position of the recesses 7 can be the location of the smallest material cross section and thus the hottest place on the ceramic Heating device can be precisely defined and adjusted.
- the Cutouts can be in the form of holes be introduced. It is only necessary to ensure that when creating the Voltage the current through the location of the ceramic heater flows at which the cross-sectional area for the Current flow is reduced and thus the resistance is increased.
- the core of the ceramic heater is one heat-resistant, electrically insulating material filled.
- FIG. 3 shows a third embodiment of the invention, which is to be explained with reference to FIG. 4.
- the Figure 3 shows only the ceramic heating pin, since the Structure and arrangement of the metal pipe and the connecting device corresponds to Figures 1 to 2 and not here to be explained again.
- Figure 4 is schematic a swirl chamber of an internal combustion engine is shown.
- the Combustion air necessary for the combustion passes through an overflow channel 11 in the swirl chamber during the Fuel is injected into the swirl chamber via a nozzle 12 is so that a combustible mixture forms.
- Glow plug G1 is in here the so-called current installation position, i.e. the for Combustion air flowing in overflow channel 11 of the swirl chamber hits the glow plug in the upward direction G1.
- the tip of the glow pen is the furthest here accessible to the flammable mixture. That is why it makes sense also the point with the reduction of the cross section of the electrically conductive ceramics, as described in FIGS. 1 to 2, at the tip of the ceramic heater remote from the holder provided.
- the second glow plug G2 installed in the so-called current reduction position. Here hits the incoming combustion air in the downward direction on the glow plug G2. For clarification was in the Vortex chamber with the dashed arrow schematically the Direction of flow entered. Because with this current reduction position the glow plug the combustible mixture in a defined Distance from the tip away from the holder to the glow plug hits, the reduced cross-section is also on attached this place. The defined distance is included depending on the design of the engine. Installation in Downstream direction is opposite to the current installation position cheaper in terms of exhaust gas values.
- the ceramic heater in the form of the glow plug the can be kept self-supporting from the housing, of course also used as a heating device for flame candles become.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
Claims (3)
- Glühkerze für Dieselmotoren mit einem zylindrischen Metallrohr (1), mit einer Anschlußvorrichtung zur elektrischen Kontaktierung und mit einer im Querschnitt U-förmigen keramischen Heizvorrichtung (3), wobei das zylindrische Metallrohr (1) an seiner Spitze die keramische Heizvorrichtung (3) freitragend hält, wobei die keramische Heizvorrichtung (3) mit der Anschlußvorrichtung kontaktiert ist, so daß während des Glühvorgangs ein Strom durch die keramische Heizvorrichtung (3) fließt, dadurch gekennzeichnet, dass die keramische Heizvorrichtung (3) mindestens eine Stelle verringerten Querschnitts (7, 10) aufweist, wobei sich die Querschnittsreduzierung an einem vorgebbaren Bereich in der Seitenwand der keramischen Heizvorrichtung (3) befindet und wobei zur Querschnittsreduzierung der keramischen Heizvorrichtung (3) die Wanddicke in diesem vorgebbaren Bereich reduziert ist.
- Glühkerze nach Anspruch 1, dadurch gekennzeichnet, daß zur weiteren Querschnittsreduzierung Aussparungen (7) in die Wand der keramischen Heizvorrichtung (3) eingebracht sind.
- Glühkerze nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die keramische Heizvorrichtung (3) mit einem hitzebeständigen, elektrisch isolierenden Material (8) gefüllt ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19506950A DE19506950C2 (de) | 1995-02-28 | 1995-02-28 | Glühstiftkerze für Dieselmotoren |
| DE19506950 | 1995-02-28 | ||
| PCT/DE1996/000142 WO1996027104A1 (de) | 1995-02-28 | 1996-02-01 | Glühstiftkerze für dieselmotoren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0812410A1 EP0812410A1 (de) | 1997-12-17 |
| EP0812410B1 true EP0812410B1 (de) | 2003-05-28 |
Family
ID=7755242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96900879A Expired - Lifetime EP0812410B1 (de) | 1995-02-28 | 1996-02-01 | Glühstiftkerze für dieselmotoren |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6054680A (de) |
| EP (1) | EP0812410B1 (de) |
| JP (1) | JP3897813B2 (de) |
| KR (1) | KR100310921B1 (de) |
| CN (1) | CN1131962C (de) |
| BR (1) | BR9607050A (de) |
| DE (2) | DE19506950C2 (de) |
| RU (1) | RU2164310C2 (de) |
| WO (1) | WO1996027104A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19757725C5 (de) * | 1997-12-23 | 2004-02-26 | Beru Ag | Dieselstarthilfe |
| DE19930334C2 (de) † | 1999-07-02 | 2003-07-31 | Beru Ag | Keramischer Heizstab und diesen enthaltende Glühkerze und Verfahren zu dessen Herstellung |
| DE19959768A1 (de) * | 1999-12-11 | 2001-06-13 | Bosch Gmbh Robert | Glühstiftkerze |
| DE10030924A1 (de) * | 2000-06-24 | 2002-01-03 | Bosch Gmbh Robert | Glühstiftkerze |
| DE10053327C2 (de) | 2000-10-27 | 2003-04-10 | Bosch Gmbh Robert | Stiftheizer |
| DE10136596B4 (de) * | 2001-07-30 | 2005-09-15 | Beru Ag | Verfahren zur Verbindung eines stabförmigen Heizelements mit einem rohrförmigen Gehäuse einer Glühkerze und durch dieses Verfahren hergestellte Glühkerze |
| US6539905B1 (en) | 2001-10-25 | 2003-04-01 | International Engine Intellectual Property Company, L.L.C. | Glow plug connection apparatus |
| US20030085214A1 (en) * | 2001-11-07 | 2003-05-08 | University Of Colorado At Boulder | Micro-glow plug and method of making same field of the invention |
| DE10155230C5 (de) * | 2001-11-09 | 2006-07-13 | Robert Bosch Gmbh | Stiftheizer in einer Glühstiftkerze und Glühstiftkerze |
| DE102008009441B4 (de) * | 2008-02-13 | 2011-08-25 | Beru AG, 71636 | Druckmessglühkerze |
| DE102008017110B3 (de) * | 2008-04-02 | 2009-09-10 | Beru Ag | Druckmessglühkerze |
| DE102010013598B4 (de) * | 2010-03-31 | 2012-05-24 | Borgwarner Beru Systems Gmbh | Glühkerze |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2755968A1 (de) * | 1977-01-19 | 1978-07-20 | Emerson Electric Co | Gluehzuendkerze |
| DE2744624A1 (de) * | 1977-10-04 | 1979-04-12 | Bosch Gmbh Robert | Gluehstiftkerze fuer brennkraftmaschinen |
| US4437440A (en) * | 1979-06-20 | 1984-03-20 | Ngk Spark Plug Co., Ltd. | Auxiliary combustion chamber preheating device |
| US4475030A (en) * | 1981-09-25 | 1984-10-02 | Caterpillar Tractor Co. | Glow plug having resiliently mounted ceramic surface-ignition element |
| DE3243743A1 (de) * | 1982-11-26 | 1984-05-30 | Robert Bosch Gmbh, 7000 Stuttgart | Sensor |
| JPS61217624A (ja) * | 1985-03-22 | 1986-09-27 | Jidosha Kiki Co Ltd | 自己温度制御型グロ−プラグ |
| US4682008A (en) * | 1985-03-22 | 1987-07-21 | Jidosha Kiki Co., Ltd. | Self-temperature control type glow plug |
| JPS62731A (ja) * | 1985-06-27 | 1987-01-06 | Jidosha Kiki Co Ltd | デイ−ゼルエンジン用グロ−プラグ |
| DE3701929A1 (de) * | 1986-01-22 | 1987-08-13 | Jidosha Kiki Co | Gluehkerze fuer eine dieselmaschine |
| US4810853A (en) * | 1986-10-28 | 1989-03-07 | Hitachi Metals Ltd. | Glow plug for diesel engines |
| DE3817843A1 (de) * | 1987-05-29 | 1988-12-08 | Jidosha Kiki Co | Gluehkerze fuer dieselmotoren |
| DE3837128C2 (de) * | 1987-11-05 | 1993-11-18 | Hitachi Metals Ltd | Glühkerze für Dieselmotoren |
| GB2220446B (en) * | 1988-04-06 | 1992-05-27 | Champion Spark Plug Europ | Glow plug for internal combustion engine |
| CH681186A5 (de) * | 1989-11-09 | 1993-01-29 | Battelle Memorial Institute | |
| US5304778A (en) * | 1992-11-23 | 1994-04-19 | Electrofuel Manufacturing Co. | Glow plug with improved composite sintered silicon nitride ceramic heater |
| DE4335292A1 (de) * | 1993-10-15 | 1995-04-20 | Beru Werk Ruprecht Gmbh Co A | Glühkerze |
| US5367994A (en) * | 1993-10-15 | 1994-11-29 | Detroit Diesel Corporation | Method of operating a diesel engine utilizing a continuously powered glow plug |
| JPH09105677A (ja) * | 1995-10-12 | 1997-04-22 | Isuzu Ceramics Kenkyusho:Kk | セラミックシース型部品及びその製造方法 |
-
1995
- 1995-02-28 DE DE19506950A patent/DE19506950C2/de not_active Expired - Fee Related
-
1996
- 1996-01-02 US US08/875,211 patent/US6054680A/en not_active Expired - Fee Related
- 1996-02-01 DE DE59610477T patent/DE59610477D1/de not_active Expired - Lifetime
- 1996-02-01 WO PCT/DE1996/000142 patent/WO1996027104A1/de not_active Ceased
- 1996-02-01 RU RU97116153/06A patent/RU2164310C2/ru not_active IP Right Cessation
- 1996-02-01 JP JP52593996A patent/JP3897813B2/ja not_active Expired - Lifetime
- 1996-02-01 EP EP96900879A patent/EP0812410B1/de not_active Expired - Lifetime
- 1996-02-01 CN CN96192170A patent/CN1131962C/zh not_active Expired - Fee Related
- 1996-02-01 KR KR1019970706082A patent/KR100310921B1/ko not_active Expired - Fee Related
- 1996-02-01 BR BR9607050A patent/BR9607050A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59610477D1 (de) | 2003-07-03 |
| DE19506950C2 (de) | 1998-07-23 |
| US6054680A (en) | 2000-04-25 |
| KR19980702676A (ko) | 1998-08-05 |
| BR9607050A (pt) | 1997-12-30 |
| EP0812410A1 (de) | 1997-12-17 |
| CN1176688A (zh) | 1998-03-18 |
| WO1996027104A1 (de) | 1996-09-06 |
| CN1131962C (zh) | 2003-12-24 |
| DE19506950A1 (de) | 1996-08-29 |
| JPH11500820A (ja) | 1999-01-19 |
| RU2164310C2 (ru) | 2001-03-20 |
| KR100310921B1 (ko) | 2001-12-17 |
| JP3897813B2 (ja) | 2007-03-28 |
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