DE102005010263A1 - Sensor element and sensor containing this - Google Patents
Sensor element and sensor containing this Download PDFInfo
- Publication number
- DE102005010263A1 DE102005010263A1 DE200510010263 DE102005010263A DE102005010263A1 DE 102005010263 A1 DE102005010263 A1 DE 102005010263A1 DE 200510010263 DE200510010263 DE 200510010263 DE 102005010263 A DE102005010263 A DE 102005010263A DE 102005010263 A1 DE102005010263 A1 DE 102005010263A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- sensor element
- measuring electrodes
- element according
- ceramic
- 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- Withdrawn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
- 239000002245 particle Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000004071 soot Substances 0.000 claims abstract description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 18
- 239000007784 solid electrolyte Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000011195 cermet Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/05—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a particulate sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1466—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being a soot concentration or content
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Es wird ein Sensorelement zur Bestimmung von Partikeln in Gasgemischen, insbesondere für Rußsensoren, beschrieben, das einen keramischen Sensorkörper, in den ein Heizelement integriert ist, aufweist, sowie eine erste und eine zweite Messelektrode (14, 16), die auf keramischen Schichten (12a, 12b) des Sensorkörpers angeordnet sind, wobei zwischen erster und zweiter Messelektrode (14, 16) eine Hochspannung anlegbar ist, derart, dass es zu einer elektrischen Entladung zwischen den Messelektroden (14, 16) kommt.The invention relates to a sensor element for determining particles in gas mixtures, in particular for soot sensors, which has a ceramic sensor body into which a heating element is integrated, and a first and a second measuring electrode (14, 16) which are disposed on ceramic layers (12a , 12b) of the sensor body are arranged, wherein between the first and second measuring electrode (14, 16), a high voltage can be applied, such that there is an electrical discharge between the measuring electrodes (14, 16).
Description
Die Erfindung geht von einem Sensorelement zur Bestimmung von Partikeln in Gasgemischen. insbesondere Rußsensor, und einem Sensor dieses enthaltend gemäß der im Oberbegriff der unabhängigen Ansprüche definierten Art aus.The The invention is based on a sensor element for the determination of particles in gas mixtures. especially soot sensor, and a sensor this containing according to the im Generic term of the independent claims defined type.
Im Zuge einer sich verschärfenden Umweltgesetzgebung erlangen zunehmend Abgasnachbehandlungssysteme Bedeutung, die die Filtration bzw. Eliminierung von in Verbrennungsabgasen existierenden Rußpartikeln ermöglichen. Um die Funktionstüchtigkeit derartiger Abgasnachbehandlungssysteme zu überprüfen bzw. zu überwachen, werden Sensoren benötigt, mit denen auch im Langzeitbetrieb eine genaue Ermittlung der aktuell im Verbrennungsabgas vorliegenden Partikelkonzentration ermöglicht werden kann. Darüber hinaus soll mittels derartiger Sensoren eine Beladungsprognose von beispielsweise in einem Abgassystem vorgesehenen Dieselpartikelfiltern durchführbar sein, um eine hohe Systemsicherheit zu erreichen und dadurch kostengünstigere Filtermaterialien einsetzen zu können.in the Course of a tightening Environmental legislation is increasingly gaining exhaust aftertreatment systems Meaning, the filtration or elimination of in combustion gases existing soot particles enable. To the functionality such exhaust aftertreatment systems to check or monitor, sensors are needed with which even in long-term operation an accurate determination of the current be made possible in the combustion exhaust gas particle concentration can. About that addition, by means of such sensors, a loading prediction of For example, provided in an exhaust system diesel particulate filters feasible to achieve high system security and thus lower cost filter materials to be able to use.
Aus
der
Aufgabe der vorliegenden Erfindung ist es, einen Sensor zur Bestimmung der Konzentration von Partikeln in Gasgemischen bereitzustellen, der eine hohe Lebensdauer aufweist und dennoch kostengünstig hergestellt werden kann.task The present invention is a sensor for determining the To provide concentration of particles in gas mixtures, the has a long life and yet manufactured inexpensively can be.
Vorteile der ErfindungAdvantages of invention
Das Sensorelement mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, dass es die der Erfindung zugrundeliegende Aufgabe in vorteilhafter Weise löst. Dies beruht insbesondere auf dessen einfachem Aufbau und auf der Verwendung robuster Bauelemente, die sich im Bereich keramischer Sauerstoffsensoren bewährt haben. Zum Schutz vor einer Beeinträchtigung der Messelektroden durch sich ablagernde Partikel weist das Sensorelement ein in das Sensorelement integriertes Heizelement auf, das eine gelegentliche oder regelmäßige Regenerierung des Sensorelementes insbesondere durch Abbrand der Partikel ermöglicht.The Sensor element with the characterizing features of claim 1 has the advantage that it is the object underlying the invention in dissolves advantageously. This is based in particular on its simple structure and on the Use of robust components in the field of ceramic Oxygen sensors proven to have. To protect against impairment of the measuring electrodes by depositing particles, the sensor element has a in the Sensor element integrated heating element, which is an occasional or regular regeneration of the sensor element in particular by burning of the particles allows.
Weitere vorteilhafte Ausführungsformen des vorliegenden Sensors ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the present sensor will become apparent from the dependent claims.
So ist es von Vorteil, wenn der Sensorkörper des Sensorelementes eine Aussparung oder einen Durchbruch aufweist, an die mindestens eine der Messelektroden grenzt. Dies ermöglicht einen Aufbau des Sensorelementes, bei dem die Großflächen der mindestens einen Messelektrode weitgehend von keramischem Material bedeckt ist und somit korrosiven Einflüssen des Gasgemisches entzogen sind. Lediglich eine Stirnseite der Messelektrode grenzt an die Aussparung bzw. den Durchbruch und gewährleistet eine zuverlässige Bestimmung der Partikel im Gasgemisch.So It is advantageous if the sensor body of the sensor element a Recess or breakthrough, at least one the measuring electrodes are adjacent. This allows a structure of the sensor element, in which the large areas of the at least one measuring electrode largely of ceramic material is covered and thus withdrawn corrosive influences of the gas mixture. Only one end face of the measuring electrode adjoins the recess or breakthrough and guaranteed a reliable one Determination of the particles in the gas mixture.
Weiterhin ist von Vorteil, wenn das Sensorelement in einen Sensor integriert ist, der eine Auswertungsvorrichtung aufweist, die die Anzahl der dielektrischen Entladungen pro Zeiteinheit ermittelt und diese als Maß für die Partikelkonzentration im Gasgemisch ausgibt.Farther is advantageous if the sensor element is integrated in a sensor is having an evaluation device, the number of determined dielectric discharges per unit time and this as Measure of particle concentration in the gas mixture.
Es ist besonders vorteilhaft, wenn eine der Messelektroden mit dem Heizelement auf einen gemeinsamen Masseanschluss gelegt ist, da dies die Zahl der nötigen elektrischen Anschlüsse des Sensorelementes begrenzt.It is particularly advantageous when one of the measuring electrodes with the Heating element is placed on a common ground connection, there this the number of needed electrical connections limited the sensor element.
In einer besonders vorteilhaften Ausführungsform ist der Sensorkörper des Sensorelementes aus planaren keramischen Schichten aufgebaut und es befinden sich die beiden Messelektroden und/oder eine der Messelektroden und das Heizelement in einer Schichtebene des Sensorkörpers. Diese Ausführungsform ermöglicht einen besonders einfachen Aufbau des Sensorelementes.In In a particularly advantageous embodiment, the sensor body of the Sensor element constructed of planar ceramic layers and there are the two measuring electrodes and / or one of the measuring electrodes and the heating element in a layer plane of the sensor body. These embodiment allows a particularly simple construction of the sensor element.
Zeichnungdrawing
Zwei
Ausführungsbeispiele
des erfindungsgemäßen Sensorelementes
sind in der Zeichnung dargestellt und werden in der nachfolgenden
Beschreibung näher
erläutert.
Dabei zeigt
Beschreibung der Ausführungsbeispieledescription the embodiments
In
Auf
den Festelektrolytschichten
Die
integrierte Form des planaren keramischen Körpers des Sensorelements
Auf
der der Festelektrolytschicht
An
die Messelektroden
Auf
der der Festelektrolytschicht
Die
Widerstandleiterbahn
Die
elektrische Widerstandsleiterbahn
Weiterhin
umfasst das Sensorelement
An
die Bohrung
Während des
Betriebs des Sensorelementes
In
Das
in
In
Dabei
ist eine der Messelektroden
Das
Sensorelement
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510010263 DE102005010263A1 (en) | 2005-03-07 | 2005-03-07 | Sensor element and sensor containing this |
EP06724910A EP1858904A1 (en) | 2005-03-07 | 2006-03-02 | Sensor element and sensor containing said element |
PCT/EP2006/060381 WO2006094923A1 (en) | 2005-03-07 | 2006-03-02 | Sensor element and sensor containing said element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510010263 DE102005010263A1 (en) | 2005-03-07 | 2005-03-07 | Sensor element and sensor containing this |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005010263A1 true DE102005010263A1 (en) | 2006-09-21 |
Family
ID=36384467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510010263 Withdrawn DE102005010263A1 (en) | 2005-03-07 | 2005-03-07 | Sensor element and sensor containing this |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1858904A1 (en) |
DE (1) | DE102005010263A1 (en) |
WO (1) | WO2006094923A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019052785A1 (en) * | 2017-09-12 | 2019-03-21 | Robert Bosch Gmbh | Particle sensor having a planar, exposed corona discharge electrode |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI404924B (en) | 2005-08-26 | 2013-08-11 | Semiconductor Energy Lab | Particle detection sensor, method for manufacturing particle detection sensor, and method for detecting particle using particle detection sensor |
JP5219710B2 (en) * | 2008-09-25 | 2013-06-26 | 日本碍子株式会社 | Particulate matter detection device and manufacturing method thereof |
JP2010210534A (en) * | 2009-03-12 | 2010-09-24 | Ngk Insulators Ltd | Particulate matter detector |
JP5164896B2 (en) * | 2009-03-12 | 2013-03-21 | 日本碍子株式会社 | Particulate matter detector |
JP2010210535A (en) * | 2009-03-12 | 2010-09-24 | Ngk Insulators Ltd | Granular substance detector |
JP2010210533A (en) * | 2009-03-12 | 2010-09-24 | Ngk Insulators Ltd | Particulate matter detector |
JP6368855B2 (en) * | 2015-11-25 | 2018-08-01 | 京セラ株式会社 | Sensor substrate and sensor device |
CN111141799A (en) * | 2020-02-19 | 2020-05-12 | 浙江百岸科技有限公司 | Chip of nitrogen-oxygen sensor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304548A1 (en) * | 1983-02-10 | 1984-08-16 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD AND DEVICE FOR MEASURING THE CONTENT OF CONDUCTIVE PARTICLES IN GASES |
DE10244702A1 (en) * | 2001-10-09 | 2003-05-08 | Bosch Gmbh Robert | Method for the detection of particles in a gas stream and sensor therefor |
DE10229411A1 (en) * | 2002-06-29 | 2004-01-29 | Robert Bosch Gmbh | Diesel engine exhaust soot determination comprises passing gases through high voltage electrical field, and monitoring frequency of discharges produced by interaction with particles |
DE10319664A1 (en) * | 2003-05-02 | 2004-11-18 | Robert Bosch Gmbh | Particle detection sensor |
-
2005
- 2005-03-07 DE DE200510010263 patent/DE102005010263A1/en not_active Withdrawn
-
2006
- 2006-03-02 EP EP06724910A patent/EP1858904A1/en not_active Withdrawn
- 2006-03-02 WO PCT/EP2006/060381 patent/WO2006094923A1/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019052785A1 (en) * | 2017-09-12 | 2019-03-21 | Robert Bosch Gmbh | Particle sensor having a planar, exposed corona discharge electrode |
CN111094935A (en) * | 2017-09-12 | 2020-05-01 | 罗伯特·博世有限公司 | Particle sensor with flat, exposed corona discharge electrode |
CN111094935B (en) * | 2017-09-12 | 2023-05-02 | 罗伯特·博世有限公司 | Particle sensor with flat, exposed corona discharge electrode |
Also Published As
Publication number | Publication date |
---|---|
EP1858904A1 (en) | 2007-11-28 |
WO2006094923A1 (en) | 2006-09-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20111122 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |