EP0967391B1 - Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge in der Brennkammer einer Brennkraftmaschine - Google Patents
Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge in der Brennkammer einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0967391B1 EP0967391B1 EP99111230A EP99111230A EP0967391B1 EP 0967391 B1 EP0967391 B1 EP 0967391B1 EP 99111230 A EP99111230 A EP 99111230A EP 99111230 A EP99111230 A EP 99111230A EP 0967391 B1 EP0967391 B1 EP 0967391B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- high frequency
- combustion
- glow plug
- heater rod
- 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
Images
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
- F02P19/028—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 the glow plug being combined with or used as a sensor
-
- 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
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/12—Testing characteristics of the spark, ignition voltage or current
-
- 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
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
- F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/021—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using an ionic current sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
- F02D35/024—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure using an estimation
-
- 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
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/12—Testing characteristics of the spark, ignition voltage or current
- F02P2017/125—Measuring ionisation of combustion gas, e.g. by using ignition circuits
Definitions
- the invention relates to a method and a device to monitor the combustion processes in the combustion chamber an internal combustion engine, in particular a diesel engine, at least one glow plug in the cylinder head is arranged with heating element.
- EP-A-0 834 652 already describes a method and a device for monitoring the combustion processes in the Combustion chamber of an internal combustion engine known, in the Cylinder head at least one glow plug with heating element is arranged, in which the heating element of the glow plug against the cylinder head with an alternating voltage is applied and the ion current, which then between the heating rod area projecting into the combustion chamber and of the cylinder head wall on the combustion chamber and is evaluated.
- Electrodes an ion current sensor namely the electrodes a spark plug with a high-frequency AC voltage act upon the accuracy when capturing the To improve ion current.
- the invention is intended to provide a method and a Device of the type mentioned are created with which the combustion processes in the combustion chamber one Internal combustion engine can be monitored in a simple manner without significant structural changes to the Machine must be made.
- the device according to the invention measures the ion current and evaluated, which is between the heating rod surface the heating element of the glow plug and the combustion chamber surface trains and is a measure of the combustion processes.
- the im Cylinder head already used glow plug and the ion current modulation occurring at the glow plug is Signal to monitor the combustion processes, especially to determine the combustion chamber pressure, evaluated.
- the cylinder head is 1 a glow plug with heating element 2 is arranged in a diesel engine.
- the one arranged in the heating element 2 Filament supplied by a battery 6 with a direct current.
- a High-frequency generator 4 is provided, which is a high-frequency AC voltage generated on the heating element 2 of the glow plug lies.
- a switch 5 is preferably provided, the two Has switch positions in which he either the battery 6 with the heating element 2 of the glow plug for glow operation or the high-frequency generator 4 with the heating element 2 the glow plug for combustion monitoring operation, in particular for measuring the combustion chamber pressure.
- a demodulator, comparator and evaluation circuit 3 is used to that coming from heating element 2 in monitoring mode Evaluate signal. For this purpose, this circuit is 3rd both with the heating element 2 and the high-frequency generator 4 connected. At its output 7 it delivers a signal that for the parameters of the combustion processes in the combustion chamber of the Machine representative, especially proportional to combustion chamber pressure, is.
- the arrangement shown in Fig. 1 works in the following way:
- the modulating supply frequency can be chosen in this way be that as a microstructure on the compression / Decompression wave appears, with the frequency value of the corresponds to the required resolution of the pressure wave.
- the temporal Change in amplitude and phase of the ion current function is proportional to the pressure change in the combustion chamber over time. Because of the differentiation according to time, all are the signal current influencing parasitic impedances, such as contact resistances at electrical connection points or Shunts due to soot or coal formation between the heating element 2 and cylinder head 1 suppressed. The pressure change over time is therefore proportional to the temporal current signal.
- a switch 5 is provided, via which between the Supply of heating element 2 with current from battery 6 or with a high-frequency AC voltage from the high-frequency generator 4 can be switched, it is also possible the high frequency AC voltage of the glow voltage of overlay the battery 6. To do this, however, appropriate Interference suppression measures are taken in order to to avoid disruptive influences in the rest of the electrical system.
- FIG. 2 A particularly preferred form of training is shown in FIG. 2 shown in the drawing.
- the heating element 2 is electrically insulated via insulation 9 installed the glow plug body 10 and lies the glow voltage from the battery 6 on the glow tube 8 of the heating element 2.
- the im Glow tube 8 is arranged heating coil with its combustion chamber side End connected to the glow tube 8 and lies with their other end in mass.
- the heating element 2 is particularly mounted and is galvanically isolated in the glow plug body 10 the glow plug body 10 with its external thread in the cylinder head 1 screwed. It is therefore at ground potential.
- the glow tube 8 is defined with an alternating voltage Amplitude and frequency applied by the high-frequency generator 4, this in turn forms between the ground potential located cylinder head wall on the combustion chamber side and the one with high-frequency AC voltage Glow tube 8 an ion current 11, the current function as Parameters include the combustion chamber pressure.
- the embodiment shown in Fig. 2 has the special advantage that in the circuit shown there the glow resistance of the filament of the heating element 2 as Termination resistance of the resonant circuit acts.
Description
Claims (7)
- Verfahren zum Überwachen der Verbrennungsvorgänge im Brennraum einer Brennkraftmaschine, in deren Zylinderkopf wenigstens eine Glühkerze mit Heizstab angeordnet ist, dadurch gekennzeichnet, daß der Heizstab der Glühkerze gegenüber dem Zylinderkopf mit einer hochfrequenten Spannung beaufschlagt wird, und der Ionenstrom, der sich daraufhin zwischen dem in den Brennraum ragenden Heizstabbereich und der brennraumseitigen Zylinderkopfwand ausbildet, gemessen und dadurch ausgewertet wird, dass die am Heizstab der Glühkerze liegende hochfrequente Spannung mit dem vom Heizstab kommenden ionenstrommodulierten Signal hinsichtlich Amplitude und Phase verglichen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Parameter der Verbrennungsvorgänge der Druck im Brennraum überwacht wird und der gemessene Ionenstrom zu einem brennraumdruckproportionalen Signal ausgewertet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen dem normalen Betrieb der Glühkerze und dem Überwachungsbetrieb mit anliegender hochfrequenter Spannung umgeschaltet wird.
- Vorrichtung zur Überwachung der Verbrennungsvorgänge im Brennraum einer Brennkraftmaschine zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch einen Hochfrequenzgenerator (4), dessen Ausgangsspannung am Heizstab (2) der Glühkerze liegt, und eine Auswerteschaltung (3), die zwischen den Heizstab (2) der Glühkerze und den Hochfrequenzgenerator (4) geschaltet ist.
- Vorrichtung nach Anspruch 4, gekennzeichnet durch einen Schalter (5) mit zwei Stellungen, der je nach Stellung die Spannung einer Batterie (6) oder die hochfrequente Spannung des Hochfrequenzgenerators (4) an den Heizstab (2) legt.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Ausgangsspannung des Hochfrequenzgenerators der Batteriespannung überlagert ist, die am Heizstab liegt.
- Vorrichtung nach Anspruch 4, 5 oder 6, dadurch gekennzeichnet, daß der Heizstab (2) der Glühkerze elektrisch isoliert im Zylinderkopf (1) angeordnet ist, die hochfrequente Spannung am Glührohr (8) der Glühkerze liegt und die Glühwendel der Glühkerze einerseits mit dem Glührohr (8) verbunden ist und andererseits an Masse liegt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19828595 | 1998-06-26 | ||
DE19828595A DE19828595C2 (de) | 1998-06-26 | 1998-06-26 | Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge im Brennraum einer Brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0967391A2 EP0967391A2 (de) | 1999-12-29 |
EP0967391A3 EP0967391A3 (de) | 2002-01-23 |
EP0967391B1 true EP0967391B1 (de) | 2004-09-08 |
Family
ID=7872159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99111230A Expired - Lifetime EP0967391B1 (de) | 1998-06-26 | 1999-06-09 | Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge in der Brennkammer einer Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0967391B1 (de) |
AT (1) | ATE275697T1 (de) |
DE (2) | DE19828595C2 (de) |
ES (1) | ES2224496T3 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19838223C2 (de) * | 1998-08-22 | 2003-02-06 | Daimler Chrysler Ag | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
DE10011614A1 (de) * | 2000-03-10 | 2001-09-13 | Delphi Tech Inc | Verfahren zum Bestimmen des Beginns einer Verbrennung im Zylinder eines Verbrennungsmotors |
DE10015277B4 (de) * | 2000-03-28 | 2009-01-08 | Infineon Technologies Ag | Vorrichtung zur Erzeugung eines Ionenstroms im Verbrennungsraum eines Dieselmotors sowie eine Glühkerze |
JP3894442B2 (ja) * | 2003-05-14 | 2007-03-22 | 三菱電機株式会社 | 内燃機関制御装置 |
DE102004005537B3 (de) * | 2004-02-04 | 2005-09-01 | Beru Ag | Verfahren zum Analysieren des Zustandes der Verbrennung im Brennraum einer Brennkraftmaschine |
DE102005005280B4 (de) * | 2005-02-04 | 2009-09-24 | Continental Automotive Gmbh | Vorrichtung zum Erfassen des Drucks in einem Brennraum einer Brennkraftmaschine |
FR2878314A1 (fr) * | 2005-05-19 | 2006-05-26 | Siemens Vdo Automotive Sas | Equipement, notamment bougie pour moteur a combustion interne a capteur integre et cablage unique, et vehicule utilisant cet equipement |
DE102010011044B4 (de) * | 2010-03-11 | 2012-12-27 | Borgwarner Beru Systems Gmbh | Verfahren zum Regeln einer Glühkerze |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2734022B1 (fr) * | 1995-05-10 | 1998-06-26 | Nippon Soken | Appareil de surveillance de la combustion dans un moteur a combustion interne |
WO1997038223A1 (fr) * | 1996-04-10 | 1997-10-16 | Denso Corporation | Bougie de prechauffage, son procede de fabrication, et detecteur de courant ionique |
DE19614288C1 (de) * | 1996-04-11 | 1997-08-07 | Telefunken Microelectron | Schaltungsanordnung zur Ionenstrommessung im Verbrennungsraum einer Brennkraftmaschine und zur Wechselstromzündung der Brennkraftmaschine |
-
1998
- 1998-06-26 DE DE19828595A patent/DE19828595C2/de not_active Expired - Fee Related
-
1999
- 1999-06-09 AT AT99111230T patent/ATE275697T1/de not_active IP Right Cessation
- 1999-06-09 EP EP99111230A patent/EP0967391B1/de not_active Expired - Lifetime
- 1999-06-09 ES ES99111230T patent/ES2224496T3/es not_active Expired - Lifetime
- 1999-06-09 DE DE59910432T patent/DE59910432D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59910432D1 (de) | 2004-10-14 |
ATE275697T1 (de) | 2004-09-15 |
DE19828595C2 (de) | 2002-09-26 |
EP0967391A3 (de) | 2002-01-23 |
DE19828595A1 (de) | 1999-12-30 |
EP0967391A2 (de) | 1999-12-29 |
ES2224496T3 (es) | 2005-03-01 |
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