EP1034400B1 - Glühstiftkerze für brennkraftmaschinen - Google Patents
Glühstiftkerze für brennkraftmaschinen Download PDFInfo
- Publication number
- EP1034400B1 EP1034400B1 EP98966162A EP98966162A EP1034400B1 EP 1034400 B1 EP1034400 B1 EP 1034400B1 EP 98966162 A EP98966162 A EP 98966162A EP 98966162 A EP98966162 A EP 98966162A EP 1034400 B1 EP1034400 B1 EP 1034400B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glow plug
- glow
- sheathed
- combustion
- coil
- 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.)
- Revoked
Links
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
- 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
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
- F02P19/022—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls using intermittent current supply
Definitions
- the invention relates to a glow plug for arrangement in Combustion chamber of air compressing internal combustion engines after the Genus of the main claim, as already from DE-C 28 02 625 or EP-A-0 785 396 is known.
- This known glow plug has one Glow plug on, in which an in an insulating material embedded electrical resistance element that is made up of puts together two resistance coils connected in series, is arranged.
- the resistance coil on the combustion chamber side Resistance element has an essentially temperature-independent Resistance and serves as a heating element, while the resistance coil remote from the combustion chamber has a high positive Has temperature resistance coefficient and as Control element works.
- the functioning of such a self-regulating Glow plug is already detailed in the beginning cited prior art explained, so that here should be dispensed with.
- the resistance of the control coil at the beginning of the heating process is low and so a high current through the heating coil flows.
- the glow plug heats up, it increases Resistance of the control coil and the heating power of the heating coil decreases. This prevents the glow plug from overheating protected.
- the glow plug according to the invention with the characteristic Features of the main claim has the advantage that by shortening of the control coil portion the resistance of the control coil is reduced and thus the heating-up time until it is reached the start temperature is reduced. At long last the glow plug according to the invention also has the known one Self-protection function with the control effect at the same time significantly reduced heating-up time.
- the clocking the current through the resistance element after reaching the Start temperature has the advantage that the permissible maximum temperature is not exceeded, increasing the lifespan the glow plug is significantly increased.
- the entire Resistance coil in the glass pen be arranged so that they is not in the housing of the glow plug. It is targeted just heating up the glow plug and direct Heat dissipation to the combustion chamber ensures what the losses, when there is unnecessary heating of the metal housing would arise, makes it negligible.
- FIG. 1 shows a longitudinal section through the region of a glow plug on the combustion chamber side
- FIG. 3 shows a time-temperature diagram for illustration the temperature profiles of the glow plugs.
- the glow plug shown in Figure 1 has a tubular Metal housing 11, in its longitudinal bore 12 Glow plug 13 sealed with part of its length is.
- This glow plug 13 has a corrosion-resistant, thin-walled glow tube 14, which on its combustion chamber side End is closed.
- a resistance element 15 Extends inside the glow tube 14 a resistance element 15 in the axial direction.
- the resistance element 15 is embedded in insulating material 16 and distant from the combustion chamber with a connecting part 17 for the provided electrical current.
- the resistance element 15 is on the combustion chamber side, electrically conductive with the bottom of the Glow tube 14 connected.
- the resistance element shown 15 consists of a heating coil 20, which is arranged on the combustion chamber side is.
- a control coil 21 is provided far from the combustion chamber, which have a high positive temperature resistance coefficient having.
- FIG 2 shows again in longitudinal section the glow plug 13, wherein It can be clearly seen here that the control coil 21 in the Relationship to the execution in Figure 1 is shortened. There are fewer helical gears are provided here, so that the entire control helix in the glow plug part that is not from the housing 11 is enclosed.
- FIG 3 shows the temperature behavior of the individual glow plugs over time.
- curve 30 is the temperature curve a conventional glow plug, as in Figure 1 is shown.
- This glow plug reached after about four seconds the temperature of 850 ° C and has a maximum temperature of 1100 ° C, which it after about Has reached 10 sec.
- About the control behavior of the glow plug the temperature is then reduced to approx. 1000 ° C.
- curve 31 shows the glow plug with a shortened control coil, as shown in Figure 2 is. Because of the much lower resistance the control coil achieves a significantly shorter heating-up time.
- the 850 ° C in this new invention Arrangement already reached after about 21 ⁇ 2 seconds.
- This Glow plug as shown in Figure 2, reached a maximum temperature of about 1200 ° C before the control behavior the glow plug responds.
- Around the glow plug with the shortened control coil in front of one is the flow of electricity through the glow plug after reaching the necessary start temperature in the exemplary embodiment this is not 1050 ° C. due to this shown control unit clocked.
- the clocking of the current a glow plug is already known from US-C-4,391,237 and should not be explained again.
- the temperature curve a clocked glow plug according to the invention according to Figure 2 is shown with the curve 32.
- connection of a glow plug with a shortened control coil and the clocking of the control device has the advantage that on the one hand the heating up time and thus the preheating time for the Engine is significantly shortened while protecting the Glow plug is guaranteed before overheating.
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 (3)
- Glühstiftkerze zur Anordnung im Brennraum luftverdichtender Brennkraftmaschinen mit einem rohrförmigen Metallgehäuse (11), in dessen Längsbohrung (12) ein Glühstift (13) mit einem Teil seiner Länge abdichtend festgelegt ist, wobei der Glühstift (13) ein dünnwandiges, an seinem brennraumseitigen Ende mit einem Boden verschlossenes Glührohr (14) hat, in dessen Innenraum ein sich in axialer Richtung erstreckendes Widerstandselement (15), welches aus einer brennraumseits angeordneten Heizwendel (20) und einer brennraumfern angeordneten Regelwendel (21) angeordnet ist, wobei die brennraumferne Regelwendel (21) mit einem Anschlußteil für den elektrischen Strom versehen ist und die brennraumseitige Heizwendel (20) elektrisch leitend mit dem Boden des Glührohres (14) verbunden ist, dadurch gekennzeichnet, daß der Widerstand der Regelwendel (21) etwa 100 bis 150 mΩ bei Raumtemperatur beträgt und der Strom durch die Glühstiftkerze getaktet wird.
- Glühstiftkerze nach Anspruch 1, dadurch gekennzeichnet, daß das sich in axialer Richtung erstreckende Widerstandselement (15) sich in dem Teil des Glühstiftes (13) befindet, der nicht von der Längsbohrung des Metallgehäuses (11) umfaßt wird.
- Glühstiftkerze nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Strom durch das Widerstandselement (15) nach dem Erreichen der Starttemperatur getaktet wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752099A DE19752099C1 (de) | 1997-11-25 | 1997-11-25 | Glühstiftkerze für Brennkraftmaschinen |
DE19752099 | 1997-11-25 | ||
PCT/DE1998/003450 WO1999027302A1 (de) | 1997-11-25 | 1998-11-23 | Glühstiftkerze für brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1034400A1 EP1034400A1 (de) | 2000-09-13 |
EP1034400B1 true EP1034400B1 (de) | 2001-09-26 |
Family
ID=7849710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98966162A Revoked EP1034400B1 (de) | 1997-11-25 | 1998-11-23 | Glühstiftkerze für brennkraftmaschinen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1034400B1 (de) |
JP (1) | JP2001524655A (de) |
DE (2) | DE19752099C1 (de) |
WO (1) | WO1999027302A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248802A1 (de) * | 2002-10-19 | 2004-04-29 | Robert Bosch Gmbh | Glühstiftkerze mit stark verkürzter Regelwendel |
JP4695536B2 (ja) * | 2006-03-29 | 2011-06-08 | 日本特殊陶業株式会社 | グロープラグ |
JP5584370B2 (ja) | 2012-04-16 | 2014-09-03 | 日本特殊陶業株式会社 | グロープラグ |
DE102013217703A1 (de) | 2013-09-05 | 2015-03-05 | Robert Bosch Gmbh | Elektrische Heizeinrichtung mit Übertemperaturschutzkörper |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2802625C3 (de) * | 1978-01-21 | 1985-07-18 | BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg | Glühkerze |
JPS56126674A (en) * | 1980-03-12 | 1981-10-03 | Diesel Kiki Co Ltd | Auxiliary stater of diesel engine |
US4423309A (en) * | 1982-06-28 | 1983-12-27 | General Motors Corporation | Quick heat self regulating electric glow heater |
DE9005085U1 (de) * | 1990-05-04 | 1990-08-09 | BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg | Glühkerze |
JP2570481Y2 (ja) * | 1991-05-30 | 1998-05-06 | 自動車機器株式会社 | 自己温度制御型グロープラグ |
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 |
-
1997
- 1997-11-25 DE DE19752099A patent/DE19752099C1/de not_active Expired - Fee Related
-
1998
- 1998-11-23 DE DE59801594T patent/DE59801594D1/de not_active Revoked
- 1998-11-23 JP JP2000522403A patent/JP2001524655A/ja active Pending
- 1998-11-23 WO PCT/DE1998/003450 patent/WO1999027302A1/de not_active Application Discontinuation
- 1998-11-23 EP EP98966162A patent/EP1034400B1/de not_active Revoked
Also Published As
Publication number | Publication date |
---|---|
DE19752099C1 (de) | 1998-10-22 |
DE59801594D1 (de) | 2001-10-31 |
JP2001524655A (ja) | 2001-12-04 |
EP1034400A1 (de) | 2000-09-13 |
WO1999027302A1 (de) | 1999-06-03 |
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