EP1600692A2 - Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung - Google Patents
Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung Download PDFInfo
- Publication number
- EP1600692A2 EP1600692A2 EP05006645A EP05006645A EP1600692A2 EP 1600692 A2 EP1600692 A2 EP 1600692A2 EP 05006645 A EP05006645 A EP 05006645A EP 05006645 A EP05006645 A EP 05006645A EP 1600692 A2 EP1600692 A2 EP 1600692A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- interval
- glühzündelements
- heating power
- power
- 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.)
- Withdrawn
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Classifications
-
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
-
- 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
- F02P19/025—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 with means for determining glow plug temperature or glow plug resistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/42—Ceramic glow ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/14—Vehicle heating, the heat being derived otherwise than from the propulsion plant
Definitions
- the present invention relates to a method for operating a Glühzündelements a vehicle heater in a starting phase of the vehicle heater.
- the duty cycle or the duty cycle of the Glühzündelement applied voltage can be varied, so that in principle the mean voltage and thus also the mean flowing current varies can be.
- this object is achieved by a method for operating a Glühzündelements a vehicle heater in one Starting phase of the vehicle heater, in which method for the Glühzündelement a desired heating power is specified and the heating power of Glühzündelements is set so that they are in the range of Target heating power is, wherein for a first heating interval of the starting phase a lower desired heating power is given, as for a subsequent second heating interval.
- the present invention is based on the recognition that, if for the starting phase takes place a regulation of the heating power and thus the actual heating power be brought as close to the desired heat output should, the heat output and thus generated in the Glühzündelement Heat is independent of the cold resistance of Glühzündelements.
- This Cold resistance or the electrical conductivity of the Glühzündelements is subject to production due to a certain variation, at least assumed to be suitable for operation Glühzündiatan It can be that this variation has a certain tolerance variation range not to the desired actual cold resistance leaves.
- a defined target heating power is so the influence of the actual cold resistance on the Glühzündelement eliminated generated heat.
- the Glühzündelement heats up with the result that the electrical resistance of the same increases significantly and thus, the same permanent voltage provided, the heating power decreases.
- the Heating power to be kept constant, it would mean that the Glühzündelement is operated with a heating power, which is the maximum possible heating power has a clear distance.
- the heating power is set high, which, for example by applying a higher voltage or pulsed excitation Increasing the duty cycle when reaching a higher average voltage can take place, it is ensured that in the second heating interval, the desired heating capacity closer to the maximum possible heating power approaches or this corresponds to an extremely rapid warming can take place. All this happens with the added effect of that Heating behavior or the heat generated is independent of the actual Cold resistance, allowing for a variety of heaters or Glühzündettin a reproducible behavior with high accuracy in the starting phase can be obtained.
- a lower Set heating power is given, as for the second heating interval.
- the desired heating power for the first heating interval is specified such that one on the Glühzündelement flowing heating current a predetermined limit regardless of one does not exceed actual cold resistance of Glühzündelements, wherein the actual cold resistance of Glühzündelements in a tolerance variation range is a desired cold resistance. It is still for that reaching the target operating temperature as quickly as possible, if for the second heating interval, the desired heating power is set such that an upper limit temperature of Glühzündelements is not exceeded.
- the desired heating power for the second heating interval and / or for the third heating interval is set such that the Temperature of Glühzündelements a set operating temperature approaches or / and remains within the range of the target operating temperature.
- control can be provided that for at least one of the heating intervals, the desired heating power to a essentially constant value is set.
- the desired heating power is set to changing values.
- Fig. 1 is a vehicle heater, wherein the inventive Method can be implemented, generally designated 10 and Here, only with regard to the relevant for explaining the present invention Components described and illustrated.
- the heater 10 includes a burner 12 having a combustion chamber 14.
- a combustion chamber 14 In a bottom portion of this combustion chamber 14 is a porous evaporator medium 16, in which via a fuel delivery pum 18 liquid fuel is fed.
- a combustion air blower 20 promotes the formation of an ignitable or combustible Mixture of required air into the combustion chamber 14. This mixture is by Brennstoffabdampfung from the porous evaporator medium 16th on the one hand and the combustion air supply on the other hand formed and by an engaging in the combustion chamber 14 and in interaction with the mixture can be brought Glühzündelement 22 ignited.
- Both the Glühzündelement 22 and the two conveyors 18, 20 are under Control of a drive device 24, which controls the operation of this different system components to be controlled and which, of course, of sensor arrangements, not shown more information can be supplied.
- the drive device 24 In connection with the Control of Glühzündelements 22 is the drive device 24, for example designed to excite this Glühzündelements 22nd to apply a pulsed voltage, wherein the duty cycle a mean voltage is defined that, also influenced by the electrical resistance of Glühzündelements 22, a corresponding Current flow induced. By the product of voltage and current the heating power can be determined.
- a heating power is predetermined in a starting phase of the heating device 10 for the Glühzündelement 22.
- the curve K 1 shows the temperature behavior of the Glühzündelements 22 in the event that an approximately constant heating power is applied over the entire starting phase.
- the temperature rises in a time of 30 to 40 seconds to about 1100 ° C, which is approximately the desired operating temperature of Glühzündelements 22, which is required for ignition.
- the Glühzündelement 22 is in the range of this temperature of 1100 ° C, the generation of the ignitable mixture is initiated, ie, fuel and combustion air are promoted.
- the time required to produce the ignitable mixture lead time is significantly lower.
- the start-up phase ie the phase lasting until the start of the combustion, is in the region of about 30 seconds, whereby external influences, such as eg. B. the ambient temperature, influencing variables.
- a first desired heating power L 1 is set, which is selected so that the current flowing through the Glühzündelement 22 current can not exceed a certain limit.
- the drive device 24 uses, for applying the required voltage to the Glühzündelement semiconductor switch elements that can conduct a certain allowable maximum current. This can be in the range of 10 to 12 A.
- the three described above and in The figure recognizable heating intervals can also be separated from each other by short intermediate intervals, in which an adjustment of the heating power for example, in an intermediate stage. Also, that can first heating interval be preceded by another heating interval, in the for example, also in an intermediate, for example, a smaller one Target heating power is specified.
- the three heating intervals with its essential Functionality serves to increase power in the initial phase of the starting phase avoid the second heating interval serving to lower the temperature of the Glühzündelements as quickly as possible in the direction of the desired operating temperature increase, and the third heating interval serves to increase the temperature of the To keep Glühzündelements in the range of the target operating temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Resistance Heating (AREA)
- Control Of Combustion (AREA)
Abstract
Description
- Fig. 1
- eine Prinzipdarstellung einer Fahrzeugheizeinrichtung;
- Fig. 2
- ein Diagramm, das in Abhängigkeit von der Zeit einerseits die Entwicklung der Temperatur im Bereich eines Glühzündelements zeigt und andererseits die vorgegebene Soll-Heizleistung zeigt.
Claims (8)
- Verfahren zum Betreiben eines Glühzündelements (22) einer Fahrzeugheizeinrichtung (10) in einer Startphase der Fahrzeugheizeinrichtung (10), bei welchem Verfahren für das Glühzündelement (22) eine Soll-Heizleistung (L) vorgegeben wird und die Heizleistung des Glühzündelements (22) derart eingestellt wird, dass sie im Bereich der Soll-Heizleistung (L) liegt, wobei für ein erstes Heizintervall (I1) der Startphase eine geringere Soll-Heizleistung (L1) vorgegeben wird, als für ein darauf folgendes zweites Heizintervall (I2).
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass für ein auf das zweite Heizintervall (I2) folgendes drittes Heizintervall (I3) eine geringere Soll-Heizleistung (L3) vorgegeben wird, als für das zweite Heizintervall (I2). - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Soll-Heizleistung (L1) für das erste Heizintervall (I) derart vorgegeben wird, dass ein über das Glühzündelement (22) fließender Heizstrom einen vorbestimmten Grenzwert unabhängig von einem tatsächlichen Kaltwiderstand des Glühzündelements (22) nicht übersteigt, wobei der tatsächliche Kaltwiderstand des Glühzündelements (22) in einem Toleranz-Variationsbereich um einen Soll-Kaltwiderstand liegt. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass für das zweite Heizintervall (I2) die Soll-Heizleistung (L2) derart vorgegeben wird, dass eine obere Grenztemperatur des Glühzündelements (22) nicht überschritten wird. - Verfahren nach Anspruch 2 oder nach Anspruch 3, sofern dieser auf Anspruch 2 rückbezogen ist,
dadurch gekennzeichnet, dass die Soll-Heizleistung (L2, L3) für das zweite Heizintervall (I2) oder/und für das dritte Heizintervall (I3) derart vorgegeben wird, dass die Temperatur des Glühzündelements (22) sich einer Soll-Betriebstemperatur annähert oder/und im Bereich der Soll-Betriebstemperatur bleibt. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass für wenigstens eines der Heizintervalle (I1,I2,I3) die Soll-Heizleistung (L) auf einen im Wesentlichen konstanten Wert gesetzt wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass für wenigstens eines der Heizintervalle (I1, I2, 13) die Soll-Heizleistung (L) auf sich ändernde Werte gesetzt wird. - Verfahren nach Anspruch 2 oder einem der Ansprüche 3 bis 7, sofern auf Anspruch 2 rückbezogen,
dadurch gekennzeichnet, dass nach dem dritten Heizintervall (I3) das Erregen des Glühzündelements (22) beendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004025772 | 2004-05-26 | ||
DE102004025772A DE102004025772A1 (de) | 2004-05-26 | 2004-05-26 | Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1600692A2 true EP1600692A2 (de) | 2005-11-30 |
EP1600692A3 EP1600692A3 (de) | 2008-03-26 |
Family
ID=34934531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05006645A Withdrawn EP1600692A3 (de) | 2004-05-26 | 2005-03-24 | Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1600692A3 (de) |
DE (1) | DE102004025772A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2128428A3 (de) * | 2008-05-30 | 2015-07-29 | NGK Spark Plug Co., Ltd. | Vorrichtung und System zur Kontrolle der Elektrifizierung von Glühkerzen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016114315A1 (de) | 2016-08-03 | 2018-02-08 | Eberspächer Climate Control Systems GmbH & Co. KG | Verfahren zum Betreiben eines brennstoffbetriebenen Fahrzeugheizgerätes |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2024951A (en) | 1978-07-06 | 1980-01-16 | Bosch Gmbh Robert | Control circuit for glow plugs of compressionignition engines |
DE19547401A1 (de) | 1995-12-19 | 1997-06-26 | Eberspaecher J | Steuerung der Zündung eines Verdampfungsbrenners |
US5725368A (en) | 1997-02-20 | 1998-03-10 | Emerson Electric Co. | System for providing rapid warm-up of electrical resistance igniter |
US5865612A (en) | 1996-02-16 | 1999-02-02 | Honeywell Inc. | Hot surface ignitor |
WO2002027241A1 (de) | 2000-09-26 | 2002-04-04 | Nanogate-Gemki Gmbh | Sic-glühzünder-anordnung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19936729C1 (de) * | 1999-08-06 | 2000-11-16 | Webasto Thermosysteme Gmbh | Verfahren zum Ansteuern eines Glühstifts für das Zünden eines Fahrzeugheizgeräts |
US6521869B1 (en) * | 2001-10-04 | 2003-02-18 | Emerson Electric Co. | System for powering an igniter to a level proven to ignite gas |
DE10253659C1 (de) * | 2002-11-18 | 2003-12-18 | Eberspaecher J Gmbh & Co | Verfahren zum Ansteuern eines Glühzündorgans eines Heizgerätes |
-
2004
- 2004-05-26 DE DE102004025772A patent/DE102004025772A1/de not_active Withdrawn
-
2005
- 2005-03-24 EP EP05006645A patent/EP1600692A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2024951A (en) | 1978-07-06 | 1980-01-16 | Bosch Gmbh Robert | Control circuit for glow plugs of compressionignition engines |
DE19547401A1 (de) | 1995-12-19 | 1997-06-26 | Eberspaecher J | Steuerung der Zündung eines Verdampfungsbrenners |
US5865612A (en) | 1996-02-16 | 1999-02-02 | Honeywell Inc. | Hot surface ignitor |
US5725368A (en) | 1997-02-20 | 1998-03-10 | Emerson Electric Co. | System for providing rapid warm-up of electrical resistance igniter |
WO2002027241A1 (de) | 2000-09-26 | 2002-04-04 | Nanogate-Gemki Gmbh | Sic-glühzünder-anordnung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2128428A3 (de) * | 2008-05-30 | 2015-07-29 | NGK Spark Plug Co., Ltd. | Vorrichtung und System zur Kontrolle der Elektrifizierung von Glühkerzen |
EP2128428B1 (de) | 2008-05-30 | 2018-05-09 | NGK Spark Plug Co., Ltd. | Vorrichtung und System zur Kontrolle der Elektrifizierung von Glühkerzen |
Also Published As
Publication number | Publication date |
---|---|
EP1600692A3 (de) | 2008-03-26 |
DE102004025772A1 (de) | 2005-12-22 |
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