DE102006034075B4 - Method and device for the selective detection of conductive particles in gas streams - Google Patents
Method and device for the selective detection of conductive particles in gas streams Download PDFInfo
- Publication number
- DE102006034075B4 DE102006034075B4 DE102006034075A DE102006034075A DE102006034075B4 DE 102006034075 B4 DE102006034075 B4 DE 102006034075B4 DE 102006034075 A DE102006034075 A DE 102006034075A DE 102006034075 A DE102006034075 A DE 102006034075A DE 102006034075 B4 DE102006034075 B4 DE 102006034075B4
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- Germany
- Prior art keywords
- electrodes
- arrangement
- gas stream
- particles
- electrode
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- 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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Verfahren zur selektiven Erfassung von elektrisch leitfähigen und/oder elektrisch geladenen Partikeln in einem Gasstrom, insbesondere zur Erfassung von Russpartikeln, bei dem der Gasstrom durch eine Anordnung von Elektroden (E1, E2) strömt, zwischen denen ein elektrischer Strom fließt, welcher durch eine behinderte Entladung zwischen den Elektroden (E1, E2) verursacht wird, wobei an den Elektroden (E1, E2) eine elektrische Spannung anliegt und ein schaltbares zusätzliches elektrisches oder magnetisches Feld so gesteuert wird, dass die leitfähigen Teichen in Abhängigkeit von ihrer Masse und ihrer Ladung unterschiedlich abgelenkt werden.method for the selective detection of electrically conductive and / or electrically charged particles in a gas stream, in particular for detecting soot particles, wherein the gas flow through an array of electrodes (E1, E2) flows, between which an electric current flows, which by a disabled discharge between the electrodes (E1, E2), wherein at the electrodes (E1, E2) an electrical voltage is applied and a switchable additional electric or magnetic field is controlled so that the conductive ponds dependent on be distracted differently from their mass and their charge.
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur selektiven Erfassung von leitfähigen Teilchen in Gasströmen, insbesondere zur Erfassung von Russpartikeln.The The invention relates to a method and a device for selective Detection of conductive particles in gas streams, in particular for detecting soot particles.
Im Stand der Technik sind unterschiedliche Verfahren zur Erfassung der Russdichte in strömenden Gasen. Dazu werden kapazitive, optische und elektronische Verfahren verwendet. Dabei wird der Stromfluss über das Entladungssystem als Maß für die Teilchenanzahl ermittelt.in the Prior art are different methods of detection the russ density in pouring Gases. These are capacitive, optical and electronic methods used. The current flow through the discharge system as Measure of the number of particles determined.
Nach
Ferner
ist nach
Bei diesem Sensor kann auch ein kleiner Abstand zwischen den beiden Elektrodeneinrichtungen präzise realisiert werden, da dieser Abstand durch die Zwischenschicht aus dem elektrisch isolierenden Material vorgeben ist. Der Sensor weist mehrere freiliegende, dem Gasstrom im Abgasrohr aussetzbare und nur um die Dicke der Zwischenschicht voneinander beabstandete Randflächenpaare der Elektroden auf, deren Impedanz sich mit steigender Partikelbeladung ändert und so ein Signal für die Partikelbeladung ändert und so ein Signal für die Partikelbeladung des im Abgasrohr strömenden Abgases liefert.at This sensor can also be a small distance between the two Electrode devices precise be realized because this distance through the intermediate layer pretend the electrically insulating material. The sensor points several exposed, the gas flow in the exhaust pipe exposable and only by the thickness of the intermediate layer spaced edge surface pairs the electrodes whose impedance changes with increasing particle loading and such a signal for the particle loading changes and such a signal for the particle loading of the exhaust gas flowing in the exhaust pipe delivers.
Nachteilig bei den kapazitiven Anordnungen ist, dass die Halter für die Elektrodensysteme durch Ablagerungen verschmutzen und damit das Messergebnis verfälschen oder gar einen Kurzschluss zwischen den Elektroden verursachen.adversely in the capacitive arrangements is that the holders for the electrode systems contaminated by deposits and thus falsify the measurement result or even cause a short circuit between the electrodes.
In
Ferner
ist in
Nach
Ferner
ist in
In
Bei den bekannten Anordnungen ist nachteilig, dass die Entstehung der Ablagerungen nicht vermieden werden kann und keine Aussage über den Fehler, der durch die jeweils aktuelle Verunreinigung verursacht wird, getroffen werden kann.at the known arrangements is disadvantageous that the emergence of the Deposits can not be avoided and no statement about the error, which is caused by the current contamination, taken can be.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art anzugeben, bei der der Einfluss von Alterungsprozessen infolge von Ablagerungen weitgehend eliminiert wird.Of the Invention is based on the object, a method and an apparatus of the type mentioned above, in which the influence of aging processes as a result of deposits is largely eliminated.
Die Aufgabe wird erfindungsgemäß mit einem Verfahren, welches die in die im Anspruch 1 angegebenen Merkmale aufweist, und mit einer Vorrichtung, welche die in die im Anspruch 3 angegebenen Merkmale aufweist, gelöst.The Task is according to the invention with a Process which has the features specified in claim 1 and with a device having the in the claim 3 specified characteristics, solved.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.advantageous Embodiments are specified in the subclaims.
Die erfindungsgemäße Lösung besteht darin, dass einem elektrischen Feld ein zusätzliches schaltbares elektrisches oder magnetisches Feld überlagert wird.The inventive solution exists in that an electric field has an additional switchable electrical or magnetic field superimposed becomes.
Damit können die durch Ablagerungen an den Elektrodenfassungen hervorgerufenen Drifterscheinungen ermittelt und gegebenenfalls kompensiert werden, wobei die Größe der parasitären Nebenschlüsse ermittelt wird.In order to can caused by deposits on the electrode sockets Drifterscheinungen be determined and compensated if necessary, where the size of the parasitic shunts is determined becomes.
Die Erfindung wird im Folgenden anhand eines Ausführungsbeispieles näher erläutert.The Invention will be explained in more detail below with reference to an embodiment.
In der zugehörigen Zeichnung zeigtIn the associated Drawing shows
und
and
Die
in
Da durch das wechselnde An- und Abschalten des Feldes nur die frei beweglichen Teilchen beeinflusst werden und nicht die störenden parasitären Abla gerungen im Elektrodenbereich, kann daraus eine Information über die zu ermittelnden Parameter der frei beweglichen Teilchen gewonnen werden.There by changing the switching on and off of the field only the free be influenced by mobile particles and not disturbing parasitic Abla in the electrode area, it can provide information about the obtained to be determined parameters of the free moving particles become.
Bei
der in
- 11
- GasleitungsrohrGas Pipeline
- 22
- Isolierröhrcheninsulating tubes
- E1E1
- innere Elektrodeinner electrode
- E2, E3E2, E3
- äußere Elektrodeouter electrode
- MM
- Magnetspulesolenoid
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006034075A DE102006034075B4 (en) | 2006-03-16 | 2006-07-24 | Method and device for the selective detection of conductive particles in gas streams |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006012492.8 | 2006-03-16 | ||
| DE102006012492 | 2006-03-16 | ||
| DE102006034075A DE102006034075B4 (en) | 2006-03-16 | 2006-07-24 | Method and device for the selective detection of conductive particles in gas streams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102006034075A1 DE102006034075A1 (en) | 2007-09-20 |
| DE102006034075B4 true DE102006034075B4 (en) | 2009-03-19 |
Family
ID=38375032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102006034075A Expired - Fee Related DE102006034075B4 (en) | 2006-03-16 | 2006-07-24 | Method and device for the selective detection of conductive particles in gas streams |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102006034075B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FIU20100360U0 (en) * | 2010-08-20 | 2010-08-20 | Kauko Janka | Electrical particle measuring instrument |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823372A (en) * | 1972-11-06 | 1974-07-09 | Univ California | Method and apparatus for measuring the total surface area concentration of particles entrained in a gas |
| DE19817402C1 (en) * | 1998-04-20 | 1999-09-30 | Logistikzentrum Inst Fuer Mate | Sensor device for quantitative evaluation of particles suspended in gas flow e.g. smoke particles in diesel engine exhaust gas |
| DE10244702A1 (en) * | 2001-10-09 | 2003-05-08 | Bosch Gmbh Robert | Method for the detection of particles in a gas stream and sensor therefor |
| DE19904691C2 (en) * | 1999-02-05 | 2003-05-28 | Esytec En U Systemtechnik Gmbh | Device and method for the simultaneous in-situ determination of the particle size and mass concentration of fluid-borne particles |
| DE10345945A1 (en) * | 2003-10-02 | 2005-04-21 | Bosch Gmbh Robert | Exhaust system and method for regenerating a soot filter |
| DE10353860A1 (en) * | 2003-11-18 | 2005-06-09 | Robert Bosch Gmbh | Sensor for detecting particles in a gas stream, and method for its production |
| DE102004029523A1 (en) * | 2004-06-18 | 2006-01-12 | Robert Bosch Gmbh | Method, particle sensor and particle sensor system for measuring particles |
-
2006
- 2006-07-24 DE DE102006034075A patent/DE102006034075B4/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823372A (en) * | 1972-11-06 | 1974-07-09 | Univ California | Method and apparatus for measuring the total surface area concentration of particles entrained in a gas |
| DE19817402C1 (en) * | 1998-04-20 | 1999-09-30 | Logistikzentrum Inst Fuer Mate | Sensor device for quantitative evaluation of particles suspended in gas flow e.g. smoke particles in diesel engine exhaust gas |
| DE19904691C2 (en) * | 1999-02-05 | 2003-05-28 | Esytec En U Systemtechnik Gmbh | Device and method for the simultaneous in-situ determination of the particle size and mass concentration of fluid-borne particles |
| DE10244702A1 (en) * | 2001-10-09 | 2003-05-08 | Bosch Gmbh Robert | Method for the detection of particles in a gas stream and sensor therefor |
| DE10345945A1 (en) * | 2003-10-02 | 2005-04-21 | Bosch Gmbh Robert | Exhaust system and method for regenerating a soot filter |
| DE10353860A1 (en) * | 2003-11-18 | 2005-06-09 | Robert Bosch Gmbh | Sensor for detecting particles in a gas stream, and method for its production |
| DE102004029523A1 (en) * | 2004-06-18 | 2006-01-12 | Robert Bosch Gmbh | Method, particle sensor and particle sensor system for measuring particles |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006034075A1 (en) | 2007-09-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |