EP1493969A2 - Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung beim Starten der Fahrzeugheizeinrichtung - Google Patents
Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung beim Starten der Fahrzeugheizeinrichtung Download PDFInfo
- Publication number
- EP1493969A2 EP1493969A2 EP04015371A EP04015371A EP1493969A2 EP 1493969 A2 EP1493969 A2 EP 1493969A2 EP 04015371 A EP04015371 A EP 04015371A EP 04015371 A EP04015371 A EP 04015371A EP 1493969 A2 EP1493969 A2 EP 1493969A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- glühzündelements
- heating power
- energy
- glühzündelement
- 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
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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 program acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time program acting through electrical means, e.g. using time-delay relays using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/28—Ignition circuits
-
- 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 when starting the vehicle heater.
- the former Trap is basically the problem that even under consideration other operating parameters, such as ambient temperature, a heater may not ignite while in the second Trap excessive consumption of electrical energy and thus a Excessive load on an on-board system is present and possibly the glow plug is destroyed by overload.
- step a) the amount related to the heating power based on a voltage applied to the Glühzündelement and a current flowing over the Glühzündelement current is determined.
- the heating power by specifying a specific duty cycle or duty cycle ie pulsed application of a voltage to a Glühzündelement
- step c) the heating power by increasing a duty cycle applied to the Glühzündelement Voltage is increased.
- the Voltage is a voltage averaged over time and when the current is is an average current over time.
- Such an average voltage or such an average current may be in various ways calculated, determined or presented. So that can actually over the value acquired over time is calculated by averaging.
- a low-pass filter system to ensure that in the event of voltage or current monitoring of the pulsed voltage or current value in one more or less constant "averaged" or "effective" voltage or be converted into a corresponding stream.
- a second predetermined Time period is checked if an ignition has occurred. It can be provided be that if no ignition is made since the beginning of the Excitation of Glühzündelements applied heating energy with a reference energy is compared.
- the heating energy is greater or smaller than the reference energy, it is then possible that if the heating energy is greater than the reference energy, in the presence of a Fuel supply problem is closed, or that if the heating energy is less than the reference energy, in the presence of a Ignition energy problem is closed.
- FIG. 10 A system in which a procedure according to the invention can be implemented is indicated generally at 10 in FIG.
- this heating system 10 a Glühzündelement 12, for example, a Glühzündit on.
- a switching transistor 14 such as field effect transistor, provided by an electrical power supply system voltage U Batt .
- This may be, for example, a DC voltage provided by an on-board voltage system.
- a microprocessor 16 which is also fed via a fixed voltage supply 18 from the on-board voltage system, controls the transistor 14 via a drive line 20 to turn this pulsed conductive or non-conductive and thus by specifying a specific duty cycle or duty cycle, ie a specific An / Off ratio to apply a pulsed voltage to the Glühzündelement 12 when it is to be energized.
- the application of a pulsed voltage results in a correspondingly pulsed current flow, whereby, depending on the duty cycle, a corresponding averaged or effective voltage or current value results.
- the microprocessor 16 determines this applied to Glühzündit 12 average or effective voltage by tapping the applied voltage via a low-pass filter 22, with the result that the applied itself rectangular voltage in a more or less constant averaged or effective voltage value U GS converted and as such is input to the microprocessor 16.
- the microprocessor uses a low-pass filter 24 on the transistor 14, the current flowing at voltage applied, and this corresponding pulsed current is converted by tapping a low-pass filter in a more or less constant average or effective Glühwstrom I GS .
- the microprocessor 16 further picks up this on-board voltage U Bett via a low-pass filter 26, this low-pass filter essentially having the task of averaging or, for example, generating voltage fluctuations during the detection when the generator is running smooth.
- Fig. 3 the heating and operating characteristics of such Glühzündelements 12 is shown in principle.
- Fig. 3 represent the curves I 1 and I 2, the currents applied over time, which flow over two different Glühzündieri having different electrical resistances, at a predetermined voltage of, for example, 8.5 volts.
- the curve I 1 represents the current flow in a Glühzündelement having a ohmic cold resistance (room temperature) of 0.42 ⁇ .
- the curve I 2 represents the course of a Glühzündelements having an ohmic resistance of 0.6 ⁇ .
- the curves T 1 and T 2 represent the temperatures occurring in each case in the region of such Glühzündelements. Due to the higher current, the Glühzündelement having the current profile I 1 generates a higher heat output and thus a higher temperature T 1 , while the Glühzündelement with the current waveform I 2 due to the lower current and the correspondingly lower heating power will lead to a correspondingly lower temperature T 2 .
- step S1 the excitation of Glühzündelements 12 begins in step S1 by applying a voltage U start .
- this voltage U corresponding to the start of the previously already mentioned, detected by the microprocessor 16 or detectable already averaged over the low-pass filter 22 and the effective voltage, which can be obtained by setting a certain duty cycle. It can be done so that initially worked with a voltage U GS , which will not be sufficient even under favorable environmental conditions to obtain an ignition.
- step S2 first a predetermined period of time t1 waited in the increased by heating the Glühzündelements 12 and correspondingly increasing ohmic resistance of the voltage value I GS has dropped to an approximately constant value.
- This time period t1 can, for example, in the range of 10 s. lie. If this period has expired, then the current I GS and the voltage U GS as well as the voltage U Batt can be determined or detected by the microprocessor.
- step S3 it is then determined in a step S3 whether a time t2 has elapsed since the energization of the Glühzündelements 12. It is initially assumed that this time t2, which is longer than the previously mentioned time t1, has not yet elapsed.
- steps S13 and S14 it is then checked whether the current I GS or the voltage U GS exceed predetermined maximum values I max and U max . If this is the case, a fault is concluded in a step S15 and a step S7 is undertaken, in which the duty cycle is reduced, in order consequently to apply a correspondingly reduced effective or average voltage to the Glühzündelement 12.
- the maximum voltage U max involved in step S 14 can be determined, for example, by the voltage U Batt provided by the power supply, for example the on-board voltage system minus a safety limit U *, which can correspond to expected voltage drop in the on-board voltage system at the transistor 14 when the Glühzündelements 12 are energized.
- U max can thus reflect the maximum achievable voltage at Glühzündelement 12.
- I max may represent the maximum allowable current through the Glühzündelement 12.
- the heating power P ist generated at the glow element 12 is determined by multiplying the previously detected current or voltage values I GS and U GS in a step S4. This heating power P ist is then compared with a setpoint power P soll .
- This setpoint power P soll can be specified in a specific heater and, of course, can also be changed as a function of different ambient parameters, in particular the outside temperature. If the determined or detected heating power P ist is smaller than the required power P soll required for reliable ignition, the voltage applied to the glow-ignited element 12 is increased in step S6 by increasing the duty cycle, ie increasing the on / off ratio , also increases the effective or average voltage U GS .
- step S2 can proceed so that either a defined increase in the duty cycle is given, which then has a certain increase in Glühzündiatangar U GS result, or that a predetermined increase of this voltage U GS is obtained by appropriate setting or adjusting a certain duty cycle , If this increase in increment or voltage increase has occurred, the system returns to step S2 in order to carry out the procedure described above again. This is done so often or until it is determined in step S4 that now the heating power P is greater than the target power P soll , so that step S4 to step S7 is taken. There is reduced by duty cycle reduction, the effective or average voltage U GS , whereupon stepping back to step S2 to perform the procedure described above, the monitoring of the heating power again.
- step S3 the answer to the question is as to whether the elapsed time is smaller when the given time t2 is for example 90 s, no, then the Procedure to a step S8 in which evaluated the flame detection becomes.
- the flame detection may be based on a temperature sensor take place, which is when an ignition is made and a Flame occurs, reports a significant increase in temperature. This flame detection Of course it can also run from the beginning of the start phase, if it is already detected before expiration of the time t2, that the ignition has occurred, including the energization of Glühzündelements 12 to finish.
- step S9 the starting phase is ended and no further voltage is applied to the glow-ignited element 12.
- step S8 the answer in step S8 is no, the time integral of the heating power is formed up to the time t2 in a step S10 and compared with a reference energy E min .
- This reference energy E min can be determined as an energy value that is at least required to ignite a heater.
- heating energy applied in the starting phase is greater than this reference energy E min , then it is determined in a step S11 that there is a fault in the fuel delivery and a corresponding check is to be carried out, since, although sufficient heating has been carried out, but no ignition has taken place , This is an indication that there was little or no fuel.
- step S10 If it is determined in step S10 that the heating energy is less than the reference energy E min , then it is determined in a step S12 that too little ignition energy or heating energy has been applied, which may be due to a defect of the Glühzündelements or too high an impedance Glühzündelement.
- the heating power not with a setpoint is compared, but with a setpoint range, within which reliable ignition is to be expected. Falls the heating power out of this setpoint range, then the invention Measures of the duty cycle reduction or duty cycle increase taken.
- An advantageous aspect of the present invention is that Glühzündiata same type or so equipped heaters in different voltage environments can be used. It must only be ensured that, for example, by specifying a certain duty cycle on Glühzündelement at the beginning of the startup procedure applied or effective voltage is comparatively small, so that by appropriate increase of the duty cycle then the required Heating power can be approached from below.
- the present invention may also be used in conjunction with permanently attached ones Voltage can be used at which a power adjustment then by voltage increase and not by Tastgradver selectedung is reached. Further, the procedure of the present invention may be the same be that initially a comparatively high voltage is applied, which has a correspondingly high heat output. If this is above the reference power, can change accordingly of the duty cycle, namely reduction of the duty cycle, the desired, for example, for a particular heater optimal heating from above be approached.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Resistance Heating (AREA)
- Air-Conditioning For Vehicles (AREA)
- Resistance Heating (AREA)
- Control Of Combustion (AREA)
Abstract
Description
- Fig. 1
- in vereinfachter Art und Weise eine Heizeinrichtung mit einem zum Zünden der Verbrennung vorgesehenen Glühzündelement und einer zugeordneten Ansteuerschaltung;
- Fig. 2
- ein Flussdiagramm, das die erfindungsgemäße Vorgehensweise in der Startphase der in Fig. 1 gezeigten Heizeinrichtung veranschaulicht;
- Fig. 3
- ein Diagramm, das über der Zeit aufgetragen den über ein Glühzündelement fließenden Strom und die dabei sich einstellende Temperatur veranschaulicht.
Claims (10)
- Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung in einer Startphase der Fahrzeugheizeinrichtung, umfassend die Schritte:a) Ermitteln einer mit einer Heizleistung des Glühzündelements (12) im Zusammenhang stehenden Größe (Pist),b) Vergleichen der mit der Heizleistung im Zusammenhang stehenden Größe (Pist) mit einer Referenz (Psoll),c) dann, wenn die Größe (Pist) kleiner als die Referenz (Psoll) ist, Erhöhen der Heizleistung des Glühzündelements (12).
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass im Schritt a) die mit der Heizleistung im Zusammenhang stehende Größe (Pist) beruhend auf einer an dem Glühzündelement (12) anliegenden Spannung (UGS) und einem über das Glühzündelement (12) fließenden Strom (IGS) ermittelt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Schritt c) die Heizleistung durch Erhöhen eines Tastgrades der an dem Glühzündelement (12) anliegenden Spannung (UGS) erhöht wird.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Spannung (UGS) eine über die Zeit gemittelte Spannung ist und dass der Strom (IGS) ein über die Zeit gemittelter Strom ist.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass wenigstens der Schritt c) erstmalig nach Ablauf einer ersten vorbestimmten Zeitdauer (t1) seit Beginn des Erregens des Glühzündelements (12) durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass nach spätestens Ablauf einer zweiten vorbestimmten Zeitdauer (t2) überprüft wird, ob eine Zündung erfolgt ist.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass dann, wenn keine Zündung erfolgt ist, die seit Beginn der Erregung des Glühzündelements (12) aufgebrachte Heizenergie mit einer Referenzenergie (Emin) verglichen wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass dann, wenn die Heizenergie größer als die Referenzenergie (Emin) ist, auf Vorliegen eines Brennstoffversorgungsproblems geschlossen wird.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass dann, wenn die Heizenergie kleiner als die Referenzenergie (Emin) ist, auf Vorliegen eines Zündenergieproblems geschlossen wird.
- Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung in einer Startphase der Fahrzeugheizeinrichtung, umfassend die Schritte:a) Ermitteln einer mit einer Heizleistung des Glühzündelements (12) im Zusammenhang stehenden Größe (Pist),b) Vergleichen der mit der Heizleistung im Zusammenhang stehenden Größe mit einer Referenz (Psoll),c) dann, wenn die Größe (Pist) mehr als ein vorbestimmtes Ausmaß der Refefenz (Psoll) abweicht, Verändern der Heizleistung derart, dass die Größe (Pist) sich in Richtung Referenz verändert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL04015371T PL1493969T3 (pl) | 2003-07-03 | 2004-06-30 | Sposób eksploatacji elementu zapłonowego żarowego urządzenia grzewczego pojazdu podczas rozruchu urządzenia grzewczego pojazdu |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10330086A DE10330086A1 (de) | 2003-07-03 | 2003-07-03 | Verfahren zum Betreiben eines Glühzündelements einer Fahrzeugheizeinrichtung beim Starten der Fahrzeugheizeinrichtung |
| DE10330086 | 2003-07-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1493969A2 true EP1493969A2 (de) | 2005-01-05 |
| EP1493969A3 EP1493969A3 (de) | 2008-03-26 |
| EP1493969B1 EP1493969B1 (de) | 2016-12-07 |
Family
ID=33426849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04015371.0A Expired - Lifetime EP1493969B1 (de) | 2003-07-03 | 2004-06-30 | Verfahren zum betreiben eines glühzündelements einer fahrzeugheizeinrichtung beim starten der fahrzeugheizeinrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1493969B1 (de) |
| JP (1) | JP2005022633A (de) |
| DE (1) | DE10330086A1 (de) |
| PL (1) | PL1493969T3 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1674794A1 (de) * | 2004-12-27 | 2006-06-28 | J. Eberspächer GmbH Co. KG | Verfahren zum Starten eines Fahrzeugheizgerätes und Fahrzeugheizgerät |
| EP3279566A1 (de) * | 2016-08-03 | 2018-02-07 | Eberspächer Climate Control Systems GmbH & Co. KG. | Verfahren zum betreiben eines brennstoffbetriebenen fahrzeugheizgerätes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425482A1 (de) | 1993-07-21 | 1995-01-26 | Budd Co | Mikroprozessor-Steuergerät für mit Dieselkraftstoff betriebene Heizgeräte |
| DE19936729C1 (de) | 1999-08-06 | 2000-11-16 | Webasto Thermosysteme Gmbh | Verfahren zum Ansteuern eines Glühstifts für das Zünden eines Fahrzeugheizgeräts |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829700A1 (de) * | 1978-07-06 | 1980-01-17 | Bosch Gmbh Robert | Verfahren zum vorwaermen von brennkraftmaschinen der diesel- o.ae. bauart mittels gluehkerzen |
| DE3433367A1 (de) * | 1984-09-12 | 1986-03-20 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zur steuerung der energiezufuhr zu einer heissen stelle |
| DE4446113C5 (de) * | 1994-12-22 | 2008-08-21 | J. Eberspächer GmbH & Co. KG | Zündvorrichtung für Heizgeräte |
| DE19605152C1 (de) * | 1996-02-13 | 1997-03-13 | Webasto Thermosysteme Gmbh | Verfahren und Glüheinrichtung zum Betreiben eines Fahrzeugzusatzheizgerätes |
| DE19605216C5 (de) * | 1996-02-13 | 2010-01-21 | Webasto Ag | Verfahren zum Betreiben eines Fahrzeugzusatzheizgerätes und Glüheinrichtung |
| US5725368A (en) * | 1997-02-20 | 1998-03-10 | Emerson Electric Co. | System for providing rapid warm-up of electrical resistance igniter |
| DE10025953C2 (de) * | 2000-05-26 | 2002-04-18 | Webasto Thermosysteme Gmbh | Verfahren zum Ansteuern eines Glühstifts zum Zünden eines Fahrzeugheizgeräts |
| DE10048021A1 (de) * | 2000-09-26 | 2002-04-11 | Nanogate Gemki Gmbh | SiC-Glühzünder-Anordnung |
| US6521869B1 (en) * | 2001-10-04 | 2003-02-18 | Emerson Electric Co. | System for powering an igniter to a level proven to ignite gas |
-
2003
- 2003-07-03 DE DE10330086A patent/DE10330086A1/de not_active Ceased
-
2004
- 2004-03-26 JP JP2004091845A patent/JP2005022633A/ja active Pending
- 2004-06-30 PL PL04015371T patent/PL1493969T3/pl unknown
- 2004-06-30 EP EP04015371.0A patent/EP1493969B1/de not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425482A1 (de) | 1993-07-21 | 1995-01-26 | Budd Co | Mikroprozessor-Steuergerät für mit Dieselkraftstoff betriebene Heizgeräte |
| DE19936729C1 (de) | 1999-08-06 | 2000-11-16 | Webasto Thermosysteme Gmbh | Verfahren zum Ansteuern eines Glühstifts für das Zünden eines Fahrzeugheizgeräts |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1674794A1 (de) * | 2004-12-27 | 2006-06-28 | J. Eberspächer GmbH Co. KG | Verfahren zum Starten eines Fahrzeugheizgerätes und Fahrzeugheizgerät |
| EP3279566A1 (de) * | 2016-08-03 | 2018-02-07 | Eberspächer Climate Control Systems GmbH & Co. KG. | Verfahren zum betreiben eines brennstoffbetriebenen fahrzeugheizgerätes |
| DE102016114315A1 (de) * | 2016-08-03 | 2018-02-08 | Eberspächer Climate Control Systems GmbH & Co. KG | Verfahren zum Betreiben eines brennstoffbetriebenen Fahrzeugheizgerätes |
| US11142041B2 (en) | 2016-08-03 | 2021-10-12 | Eberspächer Climate Control Systems GmbH | Method for operating a fuel-operated vehicle heater |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1493969B1 (de) | 2016-12-07 |
| PL1493969T3 (pl) | 2017-05-31 |
| EP1493969A3 (de) | 2008-03-26 |
| JP2005022633A (ja) | 2005-01-27 |
| DE10330086A1 (de) | 2005-01-27 |
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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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