DE3921579C2 - Exhaust gas measuring system - Google Patents
Exhaust gas measuring systemInfo
- Publication number
- DE3921579C2 DE3921579C2 DE19893921579 DE3921579A DE3921579C2 DE 3921579 C2 DE3921579 C2 DE 3921579C2 DE 19893921579 DE19893921579 DE 19893921579 DE 3921579 A DE3921579 A DE 3921579A DE 3921579 C2 DE3921579 C2 DE 3921579C2
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- sampling
- line
- measuring system
- soot filter
- 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 - Fee Related
Links
- 238000005070 sampling Methods 0.000 claims description 21
- 239000004071 soot Substances 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000004868 gas analysis Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 2
- 108700023863 Gene Components Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- 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
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
Die Erfindung bezieht sich auf eine Abgasmeßanlage zur Bestimmung der Schadstoffemission einer Dieselbrennkraft maschine mit den weiteren im Oberbegriff des Patentan spruchs angegebenen Merkmalen.The invention relates to an exhaust gas measuring system for Determination of pollutant emissions from a diesel engine machine with the others in the preamble of patent characteristics specified.
Eine Abgasmeßanlage der gattungsgemäßen Bauart ist aus dem Fachbuch "Emission- und Imissionstechnik im Verkehrswesen, Verlag TÜV Rheinland", 1983, Seite 142 bekannt.An exhaust gas measuring system of the generic type is from the Technical book "Emission and immission technology in transport, Verlag TÜV Rheinland ", 1983, page 142 known.
Die Probenentnahmeleitung ist in mehrere zu den einzelnen Analysatoren führenden Stichleitungen verzweigt, wobei in jeder Stichleitung ein Rußfilter angeordnet ist. Diese bekannte Anordnung der Rußfilter hat den Nachteil, daß jedem Analysator ein separates Rußfilter zugeordnet ist. Hinzu kommt, daß die einzelnen Rußfilter sich im Laufe der Testprogramme, z. B. nach 1 bis 2 Vollastkurven mit Ruß partikeln zusetzen und daher ständig gereinigt oder er neuert werden müssen. Dies ist jeweils mit einem hohen Zeit- und Kostenaufwand verbunden.The sampling line is divided into several for each Branch lines leading analyzers, wherein in a soot filter is arranged in each branch line. These known arrangement of the soot filter has the disadvantage that a separate soot filter is assigned to each analyzer. In addition, the individual soot filters change in the course of Test programs, e.g. B. after 1 to 2 full load curves with soot clogged particles and therefore constantly cleaned or he need to be renewed. This is always with a high Time and cost involved.
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsge mäße Abgasmeßanlage so auszubilden, daß einerseits eine Vereinfachung der Anlage und andererseits ein wartungs freier Betrieb der Rußfilter erreicht wird.The invention has for its object a genus moderate exhaust gas measuring system so that on the one hand Simplification of the system and, on the other hand, maintenance free operation of the soot filter is achieved.
Die Aufgabe ist erfindungsgemäß durch die im Kennzeichen des Patentanspruchs angegebenen Merkmale gelöst.The task is according to the invention in the in the mark of the features specified solved.
Die erfindungsgemäße Abgasmeßanlage zeichnet sich dadurch aus, daß zur Versorgung der einzelnen Analysatoren nur ein einziger Rußfilter erforderlich ist. Dies führt zu einer wesentlichen Vereinfachung der Anlage und zu einer erheb lichen Kosteneinsparung. Außerdem wird durch die Anordnung des Rußfilters im Probenentnahmeelement erreicht, daß auf dem Filter abgelagerte Rußpartikel durch die hohe Abgas temperatur und den Restsauerstoffgehalt im Abgas jeweils selbsttätig abbrennen, bzw. vom Abgasstrom von der Fil teroberfläche wieder abgelöst werden, so daß infolge die ses Selbstreinigungseffekts ein Verstopfen des Rußfilters verhindert wird. Hierdurch wird ein wartungsfreier Betrieb des Rußfilters erreicht.The exhaust gas measuring system according to the invention is characterized by this from that to supply the individual analyzers only one only soot filter is required. This leads to a significant simplification of the system and to a significant cost savings. In addition, the arrangement of the soot filter in the sampling element reaches that on soot particles deposited in the filter due to the high exhaust gas temperature and the residual oxygen content in the exhaust gas in each case burn off automatically, or from the exhaust gas flow from the fil surface are removed again, so that as a result of the This self-cleaning effect clogs the soot filter is prevented. This makes maintenance-free operation of the soot filter reached.
In der Zeichnung ist ein Ausführungsbeispiel der Er findung dargestellt. Es zeigt:In the drawing, an embodiment of the He shown. It shows:
Fig. 1 in schematischer Darstellung eine Abgasmeß anlage mit einer Probenentnahmesonde als Entnahmeelement und mit einer Anordnung des Rußfilters an der Sonde. Fig. 1 shows a schematic representation of an exhaust gas measuring system with a sampling probe as a sampling element and with an arrangement of the soot filter on the probe.
In der Figur sind von einer Abgasmeßanlage nur diejeni gen Bauelemente dargestellt, die zur Erläuterung der er findungsgemäßen Ausführung unbedingt notwendig sind.In the figure, only those of an exhaust gas measuring system are shown gene components shown to explain the he execution according to the invention are absolutely necessary.
So ist mit 1 eine von einer Dieselbrennkraftmaschine ab geführte Abgasleitung bezeichnet, in deren Verlauf ein Probenentnahmeelement angeordnet ist. An das Probeentnah meelement 2 ist eine Probenentnahmeleitung 3 angeschlos sen, die mit einer Abgasanalyseeinheit 4 verbunden ist. Die Probeentnahmeleitung 3 kann ggf. beheizt sein, um eine bestimmte Temperatur der dem Abgasstrom aus der Abgaslei tung entnommenen Abgasprobe aufrechtzuerhalten. In der Probenentnahmeleitung 3 ist eine Probenpumpe 5 zur Gas förderung vorgesehen. Die Abgasanalyseeinheit 4 enthält verschiedene Analysatoren zur Bestimmung der Abgasbestand teile wie HC, CO und NOx.Thus, 1 denotes an exhaust pipe led from a diesel internal combustion engine, in the course of which a sampling element is arranged. At the Probeentnah meelement 2 , a sampling line 3 is ruled out, which is connected to an exhaust gas analysis unit 4 . The sampling line 3 may optionally be heated in order to maintain a certain temperature of the exhaust gas sample taken from the exhaust line from the exhaust line. In the sampling line 3 , a sample pump 5 is provided for gas promotion. The exhaust gas analysis unit 4 contains various analyzers for determining the exhaust gas components such as HC, CO and NO x .
Damit in den einzelnen Analysastoren nur gasförmige Ab gasbestandteile ausgewertet werden können, ist erfindungsgemäß das Probenentnahmeelement 2 mit einem Ruß filter 6 versehen.So that only gaseous gas components can be evaluated in the individual analysis ports, the sampling element 2 is provided with a soot filter 6 according to the invention.
Gemäß dem Ausführungsbeispiel der Fig. 1 besteht das Pro benentnahmeelement 2 aus einer rohrförmigen Probenentnahme sonde 7 die mit ihren Entnahmeöffnungen 8 in den Strömungs querschnitt der Abgasleitung 1 eingetaucht ist. An die Probenentnahmesonde 7 ist in einer nicht näher dargestell ten Weise die Probenentnahmeleitung 3 angeschlossen. Das Rußfilter 6 ist schlauchförmig ausgestaltet und auf die Sonde 7 aufgesteckt, so daß die Entnahmeöffnungen 8 zum Rohrgasstrom hin durch das Rußfilter 6 abgedeckt sind. Das Rußfilter 6 ist noch an der Sonde 7 durch Schweißen befe stigt. Durch ein zusätzliches Heizelement 25 an der Sonde 7 kann ein Verstopfen des Filters 6 verhindert werden.According to the embodiment of FIG. 1, the pro benentnahmeelement 2 consists of a tubular sampling probe 7 which is immersed with its removal openings 8 in the flow cross section of the exhaust pipe 1 . The sampling line 3 is connected to the sampling probe 7 in a manner not shown in detail. The soot filter 6 is of tubular design and is plugged onto the probe 7 , so that the removal openings 8 are covered by the soot filter 6 to the tube gas flow. The soot filter 6 is still attached to the probe 7 by welding. Clogging of the filter 6 can be prevented by an additional heating element 25 on the probe 7 .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893921579 DE3921579C2 (en) | 1989-06-30 | 1989-06-30 | Exhaust gas measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893921579 DE3921579C2 (en) | 1989-06-30 | 1989-06-30 | Exhaust gas measuring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3921579A1 DE3921579A1 (en) | 1991-01-10 |
| DE3921579C2 true DE3921579C2 (en) | 1995-02-02 |
Family
ID=6384052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19893921579 Expired - Fee Related DE3921579C2 (en) | 1989-06-30 | 1989-06-30 | Exhaust gas measuring system |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3921579C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9105354U1 (en) * | 1991-04-30 | 1992-06-04 | Siemens AG, 8000 München | Facility for the treatment of exhaust gases loaded with soot particles for analysis |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE526569C (en) * | 1927-05-25 | 1931-06-08 | Siemens Ag | Device for the extraction of flue gas with a heating jacket for the extraction pipe protruding from the smoke channel |
| GB756380A (en) * | 1953-12-08 | 1956-09-05 | Kelvin & Hughes Ltd | Improvements in or relating to gas sampling apparatus |
| DE1169162B (en) * | 1962-07-20 | 1964-04-30 | Maihak Ag | Gas sampling device with water cooling for hot, dusty gases for the purpose of gas analysis |
| DD112523A1 (en) * | 1973-04-09 | 1975-04-12 | ||
| DE2416576C2 (en) * | 1974-04-05 | 1987-02-19 | Illmann Knapp | Pre-filter between heated sampling line and analyzer with filter |
| US4161883A (en) * | 1978-05-23 | 1979-07-24 | The Bendix Corporation | Conditioning assembly for continuous stack monitoring |
| US4286472A (en) * | 1980-05-05 | 1981-09-01 | The Babcock & Wilcox Company | Flexible filter |
| DE3235952A1 (en) * | 1982-09-29 | 1984-03-29 | Robert Bosch Gmbh, 7000 Stuttgart | Device for removing solid components from the exhaust gas of internal combustion engines, especially soot components |
| US4653334A (en) * | 1986-01-21 | 1987-03-31 | Ametek, Inc. | Flow inducer |
| DE3602154A1 (en) * | 1986-01-24 | 1987-07-30 | Man Technologie Gmbh | Particle filter for exhaust gases |
-
1989
- 1989-06-30 DE DE19893921579 patent/DE3921579C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3921579A1 (en) | 1991-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE |
|
| 8339 | Ceased/non-payment of the annual fee |