EP0523062A1 - Glühstiftkerze für brennkraftmaschinen. - Google Patents
Glühstiftkerze für brennkraftmaschinen.Info
- Publication number
- EP0523062A1 EP0523062A1 EP91904691A EP91904691A EP0523062A1 EP 0523062 A1 EP0523062 A1 EP 0523062A1 EP 91904691 A EP91904691 A EP 91904691A EP 91904691 A EP91904691 A EP 91904691A EP 0523062 A1 EP0523062 A1 EP 0523062A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistance
- glow plug
- combustion chamber
- cobalt
- iron
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 229910001313 Cobalt-iron alloy Inorganic materials 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 8
- 229910000640 Fe alloy Inorganic materials 0.000 abstract description 3
- 239000010941 cobalt Substances 0.000 abstract description 3
- 229910000531 Co alloy Inorganic materials 0.000 abstract description 2
- 229910017052 cobalt Inorganic materials 0.000 abstract description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 3
- 150000001868 cobalt Chemical class 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- -1 chromium-aluminum-iron Chemical compound 0.000 description 1
- FQMNUIZEFUVPNU-UHFFFAOYSA-N cobalt iron Chemical compound [Fe].[Co].[Co] FQMNUIZEFUVPNU-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 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
- F23Q7/001—Glowing plugs for internal-combustion engines
Definitions
- the invention relates to a glow plug for arrangement in the combustion chamber of air-compressing internal combustion engines according to the preamble of claim 1.
- a glow plug which in principle has the same structure and the same function as the glow plug according to the above-mentioned DE-PS 28 02 625, but for the control element a cobalt-iron alloy or a nickel Iron alloy used, the iron content of which is 20 to 35 percent by weight.
- These two alloys mentioned above have a body-centered cubic structure at room temperature, whereas when heated in the range between room temperature and 1000 ° C they change into a face-centered cubic structure. It has been shown that these latter glow plugs have only a relatively short service life due to the disruption of the control element material, lead to undesirable malfunctions and, moreover, cause costs for eliminating the malfunction.
- control element of the resistance element consists of a cobalt-iron alloy, the iron content of which is 12 to 14 percent by weight.
- FIG. 1 shows a longitudinal section through the region of a glow plug on the combustion chamber side in an enlarged view according to the invention
- FIG. 2 shows a cobalt-iron diagram which shows the
- the glow plug 10 shown in Figure 1 is provided for arrangement in a combustion chamber, not shown, of air-compressing internal combustion engines.
- This glow plug 10 has a tubular metal housing 11, in the longitudinal bore 12 of which a glow plug 13 is fixed with a part of its length.
- This glow plug 13 has a corrosion-resistant, thin-walled glow tube 14 which is closed at its end on the combustion chamber side with a base 15.
- an electrical resistance element 17 extends, which extends in the axial direction, is embedded in insulating material 18 (e.g.
- the resistance coil 20 on the combustion chamber side serves as a heating element and the resistance coil 21 remote from the combustion chamber acts, as is known, as a regulating element due to its high positive temperature resistance coefficient; While the resistance coil 20 serving as a heating element consists in a known manner of a wire material with an essentially temperature-independent resistance behavior (e.g. of a chromium-aluminum-iron alloy), the resistance coil 21 acting as a control element is selected from a cobalt-iron alloy . According to the invention, this resistance coil 21 serving as a control element is composed of such a coil
- this resistance coil 21 With less than 6 percent by weight of iron in the cobalt-iron alloy, this resistance coil 21 would initially have a hexagonal material structure ( ⁇ ) at room temperature, which - depending on the iron content - only has a face-centered cubic material structure ( ⁇ ) would take. With more than 18 percent by weight of iron in a cobalt-iron alloy, this material would have a body-centered cubic structure ( ⁇ ), namely up to at least 400 ° C, but mostly in the range between 800 and 900 ° C before it was converted into a face-centered cubic structure ( ⁇ ).
- the preferred range for a cobalt-iron alloy which is suitable for a resistance coil 21 serving as a control element, contains 12 to 14 percent by weight of iron. In the diagram for cobalt-iron alloys shown in FIG.
- the functional lines 22 and 23 shown in this diagram separate the areas of different material structures from one another.
- the function line 21 separates the area between the hexagonal material structure ( ⁇ ) from the area of the cubic face-centered material structure ( ⁇ ), while the function line 23 separates the areas of the cubic body-centered material structure ( ⁇ ) from the area of the cubic face-centered material structure ( ⁇ ).
- the preferred cobalt-iron alloy for this purpose which contains 12 to 14 percent by weight iron, is identified in the diagram in FIG. 2 as a hatched area 24.
- the desired behavior of the resistance element 17 with respect to temperature and time can be adapted to the desired course even more precisely by means of other known measures.
- measures include B. the arrangement of an annular gap 25 between the metal housing 11 and part of the length of the glow plug 13 (see Figure 1); Such an annular gap 25 is mostly used when the free length of the glow plug 13 protruding from the combustion chamber side of the metal housing 11 is to be as short as possible and therefore part of the resistance coil 21 serving as a control element projects into the area of the glow plug 13 surrounded by the metal housing 11.
- the axial length of the resistance filament 21 can usually be made relatively short, so that the control filament (and of course the heating filament on the combustion chamber side) are completely outside the area of the glow plug 13 surrounded by the metal housing 11 can be accommodated; this latter embodiment of a glow plug is to be regarded as the preferred embodiment.
- the following can also be used as further measures for adapting the temperature / time profile of the glow plug 10: adjusting the wire diameter of the resistance filaments 20 and 21, changing the slopes of the resistance filaments 20 and 21, varying the distance between the resistance filament 20 and the resistance filament 21, using Insulating materials 18 of different thermal conductivity (in particular in the area between the two resistance coils 20 and 21), arrangement of electrically conductive, heat but poorly conductive intermediate pieces (not shown) between the resistance coil 20 and the resistance coil 21, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4010479A DE4010479A1 (de) | 1990-03-31 | 1990-03-31 | Gluehstiftkerze fuer brennkraftmaschinen |
| DE4010479 | 1990-03-31 | ||
| PCT/DE1991/000181 WO1991015717A1 (de) | 1990-03-31 | 1991-03-01 | Glühstiftkerze für brennkraftmaschinen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0523062A1 true EP0523062A1 (de) | 1993-01-20 |
| EP0523062B1 EP0523062B1 (de) | 1994-09-28 |
Family
ID=6403531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91904691A Expired - Lifetime EP0523062B1 (de) | 1990-03-31 | 1991-03-01 | Glühstiftkerze für brennkraftmaschinen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5319180A (de) |
| EP (1) | EP0523062B1 (de) |
| JP (1) | JP2936147B2 (de) |
| DE (2) | DE4010479A1 (de) |
| WO (1) | WO1991015717A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213540A2 (de) | 2000-12-05 | 2002-06-12 | Vacuumschmelze GmbH & Co. KG | Glühstiftkerze für Brennkraftmaschinen |
| WO2004040193A1 (de) | 2002-10-19 | 2004-05-13 | Robert Bosch Gmbh | Regelwendematerial für eine glühstiftkerze |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2806195B2 (ja) * | 1993-01-14 | 1998-09-30 | 株式会社デンソー | グロープラグ |
| DE4301252A1 (de) * | 1993-01-19 | 1994-07-21 | Beru Werk Ruprecht Gmbh Co A | Stabflammglühkerze |
| DE29506974U1 (de) * | 1995-04-26 | 1995-07-06 | Vacuumschmelze Gmbh, 63450 Hanau | Material für die Regelwendel einer Glühstiftkerze |
| JP3802599B2 (ja) * | 1995-12-28 | 2006-07-26 | 日本特殊陶業株式会社 | 電熱式シーズヒータおよび自己温度制御型グロープラグ |
| DE19603059C2 (de) * | 1996-01-29 | 1999-07-15 | Bosch Gmbh Robert | Glühstiftkerze |
| DE19604551C2 (de) * | 1996-02-08 | 1999-08-19 | Bosch Gmbh Robert | Glühstiftkerze |
| DE19630402C2 (de) * | 1996-07-26 | 2000-12-28 | Beru Ag | Stabflammglühkerze |
| US5676100A (en) * | 1996-08-30 | 1997-10-14 | Caterpillar Inc. | Glow plug assembly |
| DE10014526B4 (de) * | 2000-03-23 | 2006-07-27 | NGK Spark Plug Co., Ltd., Nagoya | Selbstregelnde Schnellheizstabglühkerze |
| JP2002098333A (ja) | 2000-09-26 | 2002-04-05 | Ngk Spark Plug Co Ltd | グロープラグ |
| EP2378111A1 (de) * | 2002-05-14 | 2011-10-19 | NGK Spark Plug Co., Ltd. | Glühkerze |
| DE10310255A1 (de) * | 2003-03-05 | 2004-09-16 | E.G.O. Elektro-Gerätebau GmbH | Elektrische Heizung mit einer Kontaktkochplatte |
| DE10314218A1 (de) * | 2003-03-28 | 2004-10-14 | Vacuumschmelze Gmbh & Co. Kg | Elektrisches Heizelement |
| US6878903B2 (en) * | 2003-04-16 | 2005-04-12 | Fleming Circle Associates, Llc | Glow plug |
| DE102004025854B4 (de) * | 2004-05-24 | 2006-09-21 | Vacuumschmelze Gmbh & Co. Kg | Glühstiftkerze für Brennkraftmaschinen |
| JP2006300046A (ja) * | 2004-08-05 | 2006-11-02 | Ngk Spark Plug Co Ltd | 燃焼圧検知機能付グロープラグ |
| DE102008043228A1 (de) * | 2008-10-28 | 2010-04-29 | Hilti Aktiengesellschaft | Brennkraftbetriebenes Setzgerät |
| DE102013101703A1 (de) * | 2013-02-21 | 2014-08-21 | Borgwarner Beru Systems Gmbh | Verdampfer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1082949A (en) * | 1976-06-03 | 1980-08-05 | William F. Schilling | High-temperature austenitic alloys and articles utilizing the same |
| DE2802625C3 (de) * | 1978-01-21 | 1985-07-18 | BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg | Glühkerze |
| US4423309A (en) * | 1982-06-28 | 1983-12-27 | General Motors Corporation | Quick heat self regulating electric glow heater |
| US4477717A (en) * | 1983-04-08 | 1984-10-16 | Wellman Thermal Systems Corporation | Fast start glow plug |
| GB2216952B (en) * | 1988-03-16 | 1991-10-02 | Wellman Automotive Products Li | Glow plugs |
| DE3825012A1 (de) * | 1988-07-22 | 1990-01-25 | Beru Werk Ruprecht Gmbh Co A | Werkstoff fuer ein elektrisches widerstandselement mit positivem temperaturkoeffizienten |
-
1990
- 1990-03-31 DE DE4010479A patent/DE4010479A1/de not_active Withdrawn
-
1991
- 1991-03-01 DE DE59103126T patent/DE59103126D1/de not_active Expired - Lifetime
- 1991-03-01 JP JP3504187A patent/JP2936147B2/ja not_active Expired - Lifetime
- 1991-03-01 WO PCT/DE1991/000181 patent/WO1991015717A1/de not_active Ceased
- 1991-03-01 EP EP91904691A patent/EP0523062B1/de not_active Expired - Lifetime
- 1991-03-01 US US07/862,589 patent/US5319180A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9115717A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213540A2 (de) | 2000-12-05 | 2002-06-12 | Vacuumschmelze GmbH & Co. KG | Glühstiftkerze für Brennkraftmaschinen |
| WO2004040193A1 (de) | 2002-10-19 | 2004-05-13 | Robert Bosch Gmbh | Regelwendematerial für eine glühstiftkerze |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0523062B1 (de) | 1994-09-28 |
| JPH05505669A (ja) | 1993-08-19 |
| DE59103126D1 (de) | 1994-11-03 |
| WO1991015717A1 (de) | 1991-10-17 |
| DE4010479A1 (de) | 1991-10-02 |
| JP2936147B2 (ja) | 1999-08-23 |
| US5319180A (en) | 1994-06-07 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| 26 | Opposition filed |
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