EP1286047A2 - Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine - Google Patents
Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine Download PDFInfo
- Publication number
- EP1286047A2 EP1286047A2 EP02025288A EP02025288A EP1286047A2 EP 1286047 A2 EP1286047 A2 EP 1286047A2 EP 02025288 A EP02025288 A EP 02025288A EP 02025288 A EP02025288 A EP 02025288A EP 1286047 A2 EP1286047 A2 EP 1286047A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- ion
- glow plug
- measuring
- signal
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 title claims description 23
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000000523 sample Substances 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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
- 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
- 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
- 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
- F02P2017/125—Measuring ionisation of combustion gas, e.g. by using ignition circuits
Definitions
- the present invention relates to a method for determination of the ion content after a combustion process in one autoignition internal combustion engine according to the preamble of Claim 1.
- a generic method is already known (WO 86/00961), in which an ion current measurement in a diesel engine to be done with a DC voltage.
- This will be a modified glow plug in the combustion chamber of the cylinder introduced, in which an ion current measurement is to take place.
- the modified glow plug points to its in the combustion chamber protruding dome on an electrically conductive layer on which connects an electrical conductor, which in one External connection for electrical contact ends.
- the Ion current is measured by the dome of the glow plug towards the ground potential of the combustion chamber wall on a DC potential of 250 V is applied.
- the crest of the Glow plug thus forms the one electrode while on Ground potential combustion chamber wall, the other electrode forms.
- the inventive use of an AC voltage is the Understanding that the aforementioned Shunt resistance in the ion current measurement with a DC voltage is annoying because when creating a DC voltage as measuring voltage in the order of a few one hundred volts of adjusting current over this Shunt resistance can be in the same order of magnitude as the ionic current to be evaluated. It turns out that the Field strength with respect to the polarity of the voltage at the glow plug not is symmetrical. At the negative polarity of the glow plug shows a much weaker intensity than the positive polarity of the glow plug. This results in a Measuring signal in which the input signal through the different strong forming electric fields in Dependence on the polarity of the glow plug through the itself each adjusting ion current is modulated. By the Soot layer is formed only an ohmic resistance, by which the measuring signal is not modulated.
- the measurement signal as a voltage over evaluated a measuring resistor. This is a very simple one Possibility of detecting the measured signal given.
- Measure the ion current signal obtained by changing the voltage across the measuring resistor is subjected to a low-pass filtering. It shows that due to the modulation of the measuring signal, which is due to the ionic current, a comparatively high Power density in the evaluated ion current signal at lower frequencies. Due to the low-pass filtering the measuring signal, this signal component can be evaluated.
- the invention is in Dependence of the filtered by the bandpass signal component heated a glow plug. As a result, if necessary, the glow plug be burned.
- FIG. 1 shows the use of a glow plug 1 as a probe.
- This Glow plug 1 has a filament 2.
- an ion probe 3 provided for the determination of Ion content is on the glow plug 1 also an ion probe 3 provided.
- This ion probe 3 consists of a Coating, which by means of an insulation 4 against the Engine mass is isolated. Furthermore, with the connection of the 5 Ion probe 3 denotes.
- Figure 2 shows the overall arrangement with a glow plug 1 as Probe. Again, it is the insulation 4 shown in FIG see the filament 2 and the terminal 5.
- the coating 3 is shown as an electrode of a capacitor.
- the another electrode is formed by the combustion chamber wall 6. Of the Terminal 5 and the combustion chamber wall 6 are provided with a Evaluation circuit 7 contacted.
- the filament 2 instead of the shown Embodiment, it is also possible, instead of the Coating 3 the filament 2 as one of the electrodes of the Provide capacitor.
- FIG. 3 shows an equivalent circuit diagram of the overall arrangement Figure 2.
- the relevant parts of the glow plug are the Coating 3 as well as with this coating 3 corresponding combustion chamber wall 6.
- To the terminal 8 is applied to the ground an AC voltage.
- the equivalent circuit diagram are still substitute resistors drawn for the soot coating, which in a self-igniting internal combustion engine during the running Stops operation.
- the equivalent resistance 9 represents the Carbon fouling, which acts as a coating over the glow plug and the Combustion chamber wall lays.
- This sooting has a finite Resistance that also bridges the insulation 4.
- About these Resistance path can be a current when a voltage is applied flow over the coating 3 of the glow plug, the soot layer to the engine mass (combustion chamber wall 6). Parallel to this Resistance is the capacity that is still formed through the coating 3 and the combustion chamber wall 6.
- This evaluation circuit consists of a Measuring resistor 703.
- the voltage across this measuring resistor 703 is measured in terms of the ion content by a low pass filter 701 evaluated.
- a bandpass filter 702 may be provided his. This bandpass allows in particular frequencies around the Frequency of the applied AC voltage happen. This Signal represents the sooting.
- Figure 4 shows a schematic representation of the Representation of the frequency band f over the relative intensity the signals. Based on this representation, the effect can be the bandpass 702 and the low pass 701 explain.
- the Low pass 701 filters out of the modulated AC voltage with the Frequency f is an ion current signal 401 corresponding to can be evaluated to specific parameters for the To provide combustion process.
- the bandpass filter 702 detects the from Shunt of the glow plug resulting signal components 402.
- the glow plug can be heated to the glow plug when needed "F Drubrete".
- the ion content of a Evaluation of the measured capacitance between the electrodes 3 and 6 to determine. Thereby the change of the dielectricity becomes evaluated.
- the change of the dielectricity between the Electrodes result from the ion density. From a measurement the capacity can therefore be closed to the dielectric become. From the dielectricity can turn the ion density be derived.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
- Fig. 1
- die Verwendung einer Glühkerze als Sonde,
- Fig. 2
- die Gesamtanordnung mit einer Glühkerze als Sonde,
- Fig. 3
- eine Ersatzschaltbild und
- Fig. 4
- eine Darstellung des Frequenzspektrums des sich ergebenden Signales.
Claims (4)
- Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine, bei dem sich im Inneren wenigstens eines Zylinders zwei Elektroden (3,6) befinden,
dadurch gekennzeichnet, dass an die Elektroden (3, 6) eine elektrische Spannung mit einem Wechselspannungsanteil anlegbar ist, dass das Meßsignal als Spannung über einem Meßwiderstand (703) ausgewertet wird und dass das Ionenstromsignal gewonnen wird, indem die Spannung über dem Meßwiderstand (703) einer Tiefpaßfilterung (701) unterzogen wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass ein Bandpaß (702) vorgesehen ist, der Frequenzen um die Frequenz der Wechselspannungsanteile passieren läßt. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, dass in Abhängigkeit des durch den Bandpaß gefilterten Signalanteiles eine Glühkerze erhitzt wird. - Verfahren nach Anspruch 3,
dadurch gekennzeichnet,
ein gleichzeitiges Glühen und Messen des Ionenstromes möglich ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19838223A DE19838223C2 (de) | 1998-08-22 | 1998-08-22 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
| DE19838223 | 1998-08-22 | ||
| EP99113437A EP0982495B1 (de) | 1998-08-22 | 1999-07-10 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99113437A Division EP0982495B1 (de) | 1998-08-22 | 1999-07-10 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1286047A2 true EP1286047A2 (de) | 2003-02-26 |
Family
ID=7878407
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02025288A Withdrawn EP1286047A2 (de) | 1998-08-22 | 1999-07-10 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
| EP99113437A Expired - Lifetime EP0982495B1 (de) | 1998-08-22 | 1999-07-10 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99113437A Expired - Lifetime EP0982495B1 (de) | 1998-08-22 | 1999-07-10 | Verfahren zur Bestimmung des Ionenanteiles nach einem Verbrennungsvorgang in einer selbstzündenden Brennkraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6348799B1 (de) |
| EP (2) | EP1286047A2 (de) |
| DE (2) | DE19838223C2 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10015277B4 (de) * | 2000-03-28 | 2009-01-08 | Infineon Technologies Ag | Vorrichtung zur Erzeugung eines Ionenstroms im Verbrennungsraum eines Dieselmotors sowie eine Glühkerze |
| US7055372B2 (en) * | 2002-11-01 | 2006-06-06 | Visteon Global Technologies, Inc. | Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging |
| US7251571B2 (en) * | 2003-09-05 | 2007-07-31 | Visteon Global Technologies, Inc. | Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal |
| DE102004005537B3 (de) * | 2004-02-04 | 2005-09-01 | Beru Ag | Verfahren zum Analysieren des Zustandes der Verbrennung im 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 |
| US7603226B2 (en) * | 2006-08-14 | 2009-10-13 | Henein Naeim A | Using ion current for in-cylinder NOx detection in diesel engines and their control |
| EP2820580A4 (de) * | 2012-02-28 | 2015-07-29 | Univ Wayne State | Verwendung eines ionenstromsignals für techniken zur messung von motorleistung und -emissionen sowie verfahren dafür |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2939690A1 (de) * | 1979-09-29 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zur zuendungszeitpunktregelung |
| JPS5697865A (en) * | 1980-01-07 | 1981-08-06 | Hitachi Ltd | Ionization detector |
| DE3005928A1 (de) * | 1980-02-16 | 1981-09-10 | Robert Bosch Gmbh, 7000 Stuttgart | Beheizte ionenstromsonde fuer hohe zemperaturen |
| ATE43406T1 (de) * | 1981-07-23 | 1989-06-15 | Ail Corp | Verfahren und einrichtung zur erzeugung eines verbrennungsbeginnsignal fuer eine selbszuendende brennkraftmaschine. |
| US4456883A (en) * | 1982-10-04 | 1984-06-26 | Ambac Industries, Incorporated | Method and apparatus for indicating an operating characteristic of an internal combustion engine |
| DE3428371A1 (de) * | 1984-08-01 | 1986-02-13 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zur messung und regelung von betriebsdaten von verbrennungsmotoren |
| SE442345B (sv) * | 1984-12-19 | 1985-12-16 | Saab Scania Ab | Forfarande for detektering av joniseringsstrom i en tendkrets ingaende i en forbrenningsmotors tendsystem jemte arrangemang for detektering av joniseringsstrom i en forbrenningsmotors tendsystem med minst en tendkrets |
| JP3050019B2 (ja) * | 1993-10-12 | 2000-06-05 | トヨタ自動車株式会社 | 内燃機関の酸素センサ制御装置 |
| US6104195A (en) * | 1995-05-10 | 2000-08-15 | Denso Corporation | Apparatus for detecting a condition of burning in an internal combustion engine |
| DE19614287C1 (de) * | 1996-04-11 | 1997-06-26 | Telefunken Microelectron | Schaltungsanordnung zur Ionenstrommessung im Verbrennungsraum einer Brennkraftmaschine und zur Wechselstromzündung der Brennkraftmaschine |
| DE19720532C2 (de) * | 1997-05-16 | 1999-04-22 | Telefunken Microelectron | Verfahren zur Bestimmung des Zustandes einer Zündkerze in den Verbrennungsräumen einer Brennkraftmaschine |
| DE19727004A1 (de) * | 1997-06-25 | 1999-01-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Erkennung von Zündaussetzern einer Brennkraftmaschine |
| DE19828595C2 (de) * | 1998-06-26 | 2002-09-26 | Beru Ag | Verfahren und Vorrichtung zum Überwachen der Verbrennungsvorgänge im Brennraum einer Brennkraftmaschine |
| JP3753290B2 (ja) * | 1998-12-28 | 2006-03-08 | 三菱電機株式会社 | 内燃機関の燃焼状態検出装置 |
-
1998
- 1998-08-22 DE DE19838223A patent/DE19838223C2/de not_active Expired - Fee Related
-
1999
- 1999-07-10 DE DE59906834T patent/DE59906834D1/de not_active Expired - Lifetime
- 1999-07-10 EP EP02025288A patent/EP1286047A2/de not_active Withdrawn
- 1999-07-10 EP EP99113437A patent/EP0982495B1/de not_active Expired - Lifetime
- 1999-08-23 US US09/382,191 patent/US6348799B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6348799B1 (en) | 2002-02-19 |
| DE59906834D1 (de) | 2003-10-09 |
| DE19838223A1 (de) | 2000-02-24 |
| EP0982495B1 (de) | 2003-09-03 |
| DE19838223C2 (de) | 2003-02-06 |
| EP0982495A1 (de) | 2000-03-01 |
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