DE19743954A1 - Arrangement for analyzing motor vehicle exhaust gas - Google Patents
Arrangement for analyzing motor vehicle exhaust gasInfo
- Publication number
- DE19743954A1 DE19743954A1 DE19743954A DE19743954A DE19743954A1 DE 19743954 A1 DE19743954 A1 DE 19743954A1 DE 19743954 A DE19743954 A DE 19743954A DE 19743954 A DE19743954 A DE 19743954A DE 19743954 A1 DE19743954 A1 DE 19743954A1
- Authority
- DE
- Germany
- Prior art keywords
- cold start
- motor vehicle
- cuvette
- measuring system
- exhaust gas
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 8
- 239000004071 soot Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000013021 overheating Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 239000003054 catalyst Substances 0.000 description 12
- 229930195733 hydrocarbon Natural products 0.000 description 12
- 150000002430 hydrocarbons Chemical class 0.000 description 12
- 230000003197 catalytic effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004868 gas analysis Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004847 absorption spectroscopy Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/108—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using optical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
Abstract
Description
Das hier beschriebene Verfahren zur Schadstoffmessung im Kraftfahrzeug während der Kaltstartphase ist eine Erweiterung des Antrages auf Erteilung des Patentes "Vorrichtung zur Analyse des Abgases von Kraftfahrzeugen", Az. 197 36 864.6 des Deutschen Patentamtes.The method described here for measuring pollutants in the motor vehicle during Cold start phase is an extension of the application for the patent "device for Analysis of exhaust gas from motor vehicles ", Az. 197 36 864.6 of the German Patent Office.
In den ersten Sekunden des Kraftfahrzeugbetriebes, wenn der Katalysator seine Betriebstemperatur noch nicht erreicht hat, ist die Schadstoffminderung des Abgases durch den Katalysator, die sogenannte Konvertierungsrate, noch sehr niedrig. Da der Motor in der Kaltstartphase etwa 70% seiner gesamten Emissionen produziert, wäre jedoch eine optimale Schadstoffminderung gerade in dieser Phase wünschenswert. Ganz besonders muß das Konvertierungsverhalten für die unverbrannten Kohlenwasserstoffe (HC) verbessert werden.In the first few seconds of motor vehicle operation when the catalytic converter is its Has not yet reached operating temperature, the exhaust gas is reduced by the Catalyst, the so-called conversion rate, is still very low. Since the engine in the Cold start phase would produce around 70% of its total emissions, but would be an optimal one Pollutant reduction desirable in this phase. It has to be especially Conversion behavior for unburned hydrocarbons (HC) can be improved.
Im Hinblick auf die strengen US-Grenzwerte werden Maßnahmen notwendig, um eine hohe Konvertierungsrate auch beim Kaltstart zu gewährleisten. Die von der US-Regierung favorisierten Schlagwörter für die einzelnen Stufen zur Einführung abgasarmer Fahrzeuge sind Transitional- Low-Emission Vehicles TLEV, Low-Emission Vehicles LEV und Ultra-Low-Emission Vehicles ULEV.In view of the strict US limits, measures are necessary to achieve a high level To ensure conversion rate even on cold start. Those favored by the U.S. government Keywords for the individual stages for the introduction of low-emission vehicles are transitional Low-emission vehicles TLEV, low-emission vehicles LEV and ultra-low-emission vehicles ULEV.
Eine Möglichkeit zur Schadstoffreduzierung ist die Integration einer elektrischen Heizung im Katalysator, die während der Start- und Warmlaufphase den Katalysator beheizt. Bei Metallträger- Katalysatoren wird der Metallkörper als elektrischer Widerstand zum Heizen verwendet. Auch bei einem Katalysator mit Keramikträger ist die Beheizung durch Vorschalten eines elektrischen Heizkörpers möglich.One option for reducing pollutants is the integration of an electric heater in the Catalytic converter that heats the catalytic converter during the start-up and warm-up phase. With metal support For catalysts, the metal body is used as an electrical resistor for heating. Also at A catalyst with a ceramic carrier is the heating by an electrical one Radiator possible.
Bei einer anderen Technik wird Kraftstoff in den Katalysator gespritzt und verbrannt. Bei dieser Methode erreichen der Katalysator und die Lambda-Sonde nach wenigen Sekunden die Betriebstemperatur.Another technique injects fuel into the catalytic converter and burns it. At this The catalyst and the lambda probe reach the method after a few seconds Operating temperatur.
Eine bessere Möglichkeit ist die Adsorption von HC während der ersten Sekunden nach dem Start (HC-Falle). Die Desorption erfolgt dann, wenn der Katalysator eine Temperatur erreicht hat, bei der eine zufriedenstellende Konvertierung gesichert ist. Untersuchungen zeigen, daß mit diesem Verfahren eine Verringerung der HC-Emission von bis zu 50% möglich ist. A better option is to adsorb HC during the first few seconds after starting (HC trap). Desorption takes place when the catalyst has reached a temperature at which a satisfactory conversion is assured. Studies show that with this Procedure a reduction in HC emissions of up to 50% is possible.
Die Beheizung des Katalysators wird in /1/, /2/ und /3/ beschrieben.The heating of the catalyst is described in / 1 /, / 2 / and / 3 /.
Die Einspritzung und die Verbrennung von Kraftstoff werden in /4/ behandelt.The injection and combustion of fuel are dealt with in / 4 /.
Mit der Minderung der Kohlenwasserstoffkonzentration durch HC-Fallen befassen sich die Quellen /5/ und /6/.The sources are concerned with reducing the hydrocarbon concentration through HC traps / 5 / and / 6 /.
Aus diesen Literaturquellen ist zu entnehmen, daß momentan ein Meßgerät fehlt, das in der Lage ist, die tatsächliche Emission in der Kaltstartphase zu erfassen, um einen optimalen Betrieb zu ermöglichen und evtl. Fehler in der Technik zu signalisieren. Der Gegenstand der vorliegenden Patentanmeldung ist ein geeignetes Meßsystem, das die Emission in der Kaltstartphase erfassen und die Steuerung der Emissions-Minderungsanlage vornehmen kann.From these literature sources it can be seen that there is currently no measuring device capable of is to record the actual emission in the cold start phase to ensure optimal operation enable and signal any errors in the technology. The subject of the present Patent application is a suitable measuring system, which record the emission in the cold start phase and can control the emission reduction system.
Die Messung der Kaltstartemission wird mit Hilfe eines Meßsystems vorgenommen, das nach dem Prinzip des NDIR-Photometers arbeitet. Dieses Meßsystem besteht im wesentlichen aus einem Strahler, einem Empfänger und einer optischen Küvette. Solche Meßsysteme sind weltweit gut bekannt /7-22/.The measurement of the cold start emission is carried out with the aid of a measuring system which, according to the Principle of the NDIR photometer works. This measuring system consists essentially of one Emitter, a receiver and an optical cuvette. Such measuring systems are good worldwide known / 7-22 /.
Als eine besondere Neuigkeit ist bei der vorliegenden Vorrichtung zu betrachten, daß die optische Küvette nicht wie üblich aus einem Rohr mit einer möglichst gut reflektierenden Innenwandung besteht, sondern aus einem porösen Material. Dieses Material kann z. B. Sinterstahl oder Sinterbronze oder ein anderes gesintertes Material sein, das es ermöglicht, das zu messende Gas durch Diffusion in das Küvettenrohr zu führen, s. Fig. 1. Herkömmliche Gerate verfügen über ein nicht-poröses Küvettenrohr, in das das zu messende Gas durch eine externe Pumpe geführt wird. Dadurch benötigen diese Geräte eine aufwendige und somit kostspielige Gasaufbereitung, bestehend aus einer Tropfenabscheidevorrichtung, einer Pumpe, einem Druckminderer und einem Strömungsmesser /23/.A particular novelty in the present device is that the optical cuvette does not consist, as usual, of a tube with the best possible reflective inner wall, but of a porous material. This material can e.g. B. sintered steel or sintered bronze or another sintered material that allows the gas to be measured to be guided by diffusion into the cuvette tube, see. Fig. 1. Conventional devices have a non-porous cuvette tube into which the gas to be measured is fed by an external pump. As a result, these devices require complex and therefore costly gas treatment, consisting of a droplet separator, a pump, a pressure reducer and a flow meter / 23 /.
Die Verwendung einer porösen Küvette aus Sintermaterial ist hingegen in der Kfz-Technik besonders vorteilhaft, da bei dieser Anordnung die Schmutz-, vor allem aber die Rußpartikel, an der als Filter wirkenden Siebschicht des Sintermaterials zurückgehalten werden. Das Entfernen der Ruß- und Schmutzpartikel könnte in gewissen Zeitabständen durch Rückspülen mit Druckluft erfolgen, s. Fig. 2. Das Rückspülen könnte z. B. mit Hilfe einer an den Tankstellen benutzten Druckluftvorrichtung für das Aufblasen der Reifen vorgenommen werden.The use of a porous cuvette made of sintered material, on the other hand, is particularly advantageous in automotive engineering, since with this arrangement the dirt particles, but above all the soot particles, are retained on the sieve layer of the sintered material which acts as a filter. The soot and dirt particles could be removed at certain intervals by backwashing with compressed air, see. Fig. 2. The backwashing could e.g. B. with the help of a compressed air device used at the filling stations for inflating the tires.
In Fig. 1 sind die optischen Komponenten des Meßsystems dargestellt. Diese sind: Das poröse Küvettenrohr aus Sintermaterial (1), der Strahler (2) mit Reflektor (3) und der Detektor (4) mit einer Linse (5) zum bündeln der infraroten Strahlung.In Fig. 1, the optical components of the measuring system are shown. These are: the porous cuvette tube made of sintered material ( 1 ), the emitter ( 2 ) with reflector ( 3 ) and the detector ( 4 ) with a lens ( 5 ) for focusing the infrared radiation.
Die Fig. 2 soll das Rückspülen der Rußpartikel (9) mit Druckluft (8) erläutern. Die von außen kommende Druckluftleitung wird mit ihrer Anschlußkupplung (6) an den von außen am Kraftfahrzeug zugänglichen Einlaßstutzen (7) angekoppelt. Die Druckluft (8) entfernt dabei die an der Außenseite des Küvettenrohres (1) haftenden Rußpartikel (9). FIG. 2 is intended to illustrate the backwashing of the soot particles (9) with compressed air (8). The compressed air line coming from the outside is coupled with its connecting coupling ( 6 ) to the inlet connection ( 7 ) accessible from the outside of the motor vehicle. The compressed air ( 8 ) removes the soot particles ( 9 ) adhering to the outside of the cuvette tube ( 1 ).
Wie vorhergehend beschrieben, gibt es verschiedene Möglichkeiten einer Schadstoffminderung während der Kaltstartphase.As described above, there are various ways of reducing pollutants during the cold start phase.
Die einfachste Möglichkeit ist das Vorheizen des Katalysators vor dem Start. Erfolgt das Vorheizen des Katalysators elektrisch, so wird, bedingt durch die Masse und thermische Trägheit des Katalysators, der Akkumulator des Kraftfahrzeuges stark beansprucht. An kalten Wintertagen und bei nicht ganz neuen, bzw. nicht vollgeladenen Akkumulatoren entsteht die Situation, daß der Wagen nach dem Vorheizen nicht mehr gestartet werden kann.The easiest way is to preheat the catalyst before starting. The preheating takes place of the catalyst electrically, it is, due to the mass and thermal inertia of the Catalyst, the battery of the motor vehicle is heavily used. On cold winter days and in the case of not completely new or not fully charged accumulators, the situation arises that the Trolley can no longer be started after preheating.
Eine bessere Möglichkeit zur Schadstoffminderung ist der Einsatz von HC-Fallen. Um jedoch eine hohe Effizienz einer solchen HC-Falle zu ermöglichen, ist es unbedingt notwendig, die Kohlenwasserstoffkonzentration im Abgas zu messen.A better way to reduce pollutants is to use HC traps. However, around one To enable high efficiency of such an HC trap, it is imperative that Measure the hydrocarbon concentration in the exhaust gas.
Da das Kaltstart-Meßsystem nur einen geringen Energiebedarf hat, kann es bereits vor der Kaltstartphase in Betrieb genommen werden. Dazu scheinen z. B. ein Sitzbelegungssensor (10) oder andere Sensoren im Kraftfahrzeug geeignet zu sein, um bereits beim Einsteigen in das Kraftfahrzeug das Kaltstart-Meßsystem zu aktivieren, siehe Fig. 3. Gleichzeitig könnte auch die HC-Falle eingeschaltet werden. Since the cold start measuring system has only a low energy requirement, it can be put into operation before the cold start phase. For this seem z. B. a seat occupancy sensor ( 10 ) or other sensors in the motor vehicle to be suitable for activating the cold start measuring system when entering the motor vehicle, see FIG. 3. At the same time, the HC trap could also be switched on.
Eine besonders günstige Möglichkeit für die Unterbringung des Kaltstart-Meßsystems ist ein zylinderförmiger Behälter (12) als Zwischenstück des Auspuffrohres (11), ähnlich zu einem Katalysator oder einem Schalldämpfer. Mögliche Ausbildungsformen zeigt die Fig. 4. In diesem, an den letzten Schalldämpferkasten angeschlossenen, Zylinder befindet sich die aus dem gesinterten Rohrmaterial bestehende optische Küvette sowie die elektronische Schaltung für die Meßdatenerfassung.A particularly favorable option for accommodating the cold start measuring system is a cylindrical container ( 12 ) as an intermediate piece of the exhaust pipe ( 11 ), similar to a catalytic converter or a silencer. Fig. 4 shows possible forms of training . In this cylinder, which is connected to the last silencer box, there is the optical cuvette consisting of the sintered tube material and the electronic circuit for the measurement data acquisition.
Da das Kaltstart-Meßsystem als letztes Element an das Abgasbehandlungssystem des Kraftfahrzeuges angeschlossen wird, ist das zu messende Gas selbst nach längeren Fahrten, nach einer Fahrt mit höherer Geschwindigkeit oder an warmen Sommertagen bereits so kühl, daß die optische Vorrichtung ohne besondere Schutzmaßnahmen direkt im Gasweg installiert werden kann. Since the cold start measuring system as the last element to the exhaust gas treatment system of the Connected to the vehicle, the gas to be measured is even after long journeys, after a drive at higher speed or on warm summer days it is so cool that the optical device can be installed directly in the gas path without special protective measures can.
/1/ Härkönen M., Malvile P.: Optimisation of Metallic TWC-Behaviour and Precious Metal Costs,
SAE 920395.
/2/ Kaiser W. F., Maus W., Swars H., Brück R.: Optimisation of an Electrically-Heated Catalytic
Converter System-Calculations and Application, SAE 930384, 1993.
/3/ Hellmann K. H., Piotrowski G. K., Schaefer R. M.: Start Catalyst Systems Employing Heated
Catalyst Technology for Control of Emissions from Methanol-Fueled Vehicles, SAE 930382, 1993.
/4/ Ma T., Collings N., Hands T.: Exhaust Gas Ignition (EGI)- A New Concept for Rapid Light-Off
of Automotiv Exhaust Catalytic Converters, SAE 920400.
/5/ Hochmuth J. K., Burk P. L., Tolentino C., Mignano M. J.:
Hydrocarbon Traps for Controlling Cold-Start Emission, SAE 930739, 1993.
/6/ Minami T., Nagase T.: Exhaust Gas Purification Device in Variable Combination of Absorbent
and Catalyst According to Gas Temperature. EP 424966, 1990.
/7/ Offenlegungsschrift 2457521: Einrichtung für einen nichtdispersiven kontinuierlich arbeitenden
Wechsellicht -Infrarot-Gasanalysator ohne mechanisch bewegte Teile. 05. 12. 1974.
/8/ Offenlegungsschrift DE 44 13 670 A1: Gerät für Infrarotanalysen von insbesondere
gasförmigen Stoffen. 20. 04. 1994.
/9/ US-Patent 5,340,986: Diffusion-Type Gas Sample Chamber. Aug. 23, 1994.
/10/ US-Patent 5,060,508: Gas-Sample Chamber. Oct. 29, 1991.
/11/ Patentschrift der DDR 110561: Vorrichtung zur Erzeugung einer konstanten
Strahlungsleistung für Infrarot-Analysatoren. 18.03.1974.
/12/ Offenlegungsschrift DE 43 20 873 A1: Schaltungsanordnung für einen optischen Melder zur
Umweltüberwachung und Anzeige eines Störmediums. 23.06.1993.
/13/ Offenlegungsschrift DE 36 19 301 A1: Verfahren und Einrichtung zur Messung der
Aldehydkonzentration in Abgasen. 07.06.1986.
/14/ US-Patent 5,065,025: Gas Sample Analysis Provided by Light Pipe Radiation Structure. Nov.
12,1991.
/15/ US-Patent 5,041,723: Ifrared Ray Detector with Multiple Optical Filters. Aug. 20,1991.
/16/ UK Patent Application 2 263 766 A: Calibration method for gas concentration measurements.
30.01.1992.
/17/ Daetz M., Treptow T., Wiedermann B.: Mikroprocessorgesteuertes Meßgerät für die
Gasüberwachung. Technisches Messen tm 54, H. 1111987 S. 439-441.
/18/ Staab J.: Industrielle Gasanalyse. A Absorptionsspektrometrie. Technisches Messen tm 60
(1993), S. 111-117.
/19/ Staab J.: Industrielle Gasanalyse. A Absorptionsspektrometrie. Technisches Messen tm 61
(1994), S. 221-227.
/20/ Pichlmaier J.: Kalibriertechnik für Gassensoren. Technisches Messen tm 57 (1990), S. 419-
423.
/21/ Offenlegungsschrift DE 44 41 023 A1: Gasanalysator und Gasanalysiermechanismus. 17.11.1994.
/22/ Offenlegungsschrift DE 38 03 108 A1: Einrichtung zur Ein- oder Mehrkomponentenanalyse
mittels Strahlungsabsorption. 03.02.1988.
/23/ Offenlegungsschrift DE 196 05 053 A1: On-Board-Diagnose /OBD/-Verfahren und
Vorrichtung im Mikromaßstab zur kontinuierlichen Messung des Schadstoffaustrages aus
Kraftfahrzeugen. 12.02.1996. / 1 / Härkönen M., Malvile P .: Optimization of Metallic TWC-Behavior and Precious Metal Costs, SAE 920395.
/ 2 / Kaiser WF, Maus W., Swars H., Brück R .: Optimization of an Electrically-Heated Catalytic Converter System-Calculations and Application, SAE 930384, 1993.
/ 3 / Hellmann KH, Piotrowski GK, Schaefer RM: Start Catalyst Systems Employing Heated Catalyst Technology for Control of Emissions from Methanol-Fueled Vehicles, SAE 930382, 1993.
/ 4 / Ma T., Collings N., Hands T .: Exhaust Gas Ignition (EGI) - A New Concept for Rapid Light-Off of Automotiv Exhaust Catalytic Converters, SAE 920400.
/ 5 / Hochmuth JK, Burk PL, Tolentino C., Mignano MJ: Hydrocarbon Traps for Controlling Cold-Start Emission, SAE 930739, 1993.
/ 6 / Minami T., Nagase T .: Exhaust Gas Purification Device in Variable Combination of Absorbent and Catalyst According to Gas Temperature. EP 424966, 1990.
/ 7 / Offenlegungsschrift 2457521: Device for a non-dispersive, continuously operating alternating light infrared gas analyzer without mechanically moving parts. December 05, 1974.
/ 8 / laid-open specification DE 44 13 670 A1: device for infrared analysis of in particular gaseous substances. April 20, 1994.
/ 9 / U.S. Patent 5,340,986: Diffusion-Type Gas Sample Chamber. Aug. 23, 1994.
/ 10 / U.S. Patent 5,060,508: Gas Sample Chamber. Oct. 29, 1991.
/ 11 / GDR 110561 patent: Device for generating a constant radiation power for infrared analyzers. 3/18/1974.
/ 12 / Offenlegungsschrift DE 43 20 873 A1: Circuit arrangement for an optical detector for environmental monitoring and display of an interference medium. 06/23/1993.
/ 13 / Offenlegungsschrift DE 36 19 301 A1: Method and device for measuring the aldehyde concentration in exhaust gases. 06/07/1986.
/ 14 / U.S. Patent 5,065,025: Gas Sample Analysis Provided by Light Pipe Radiation Structure. Nov. 12,1991.
/ 15 / U.S. Patent 5,041,723: Ifrared Ray Detector with Multiple Optical Filters. Aug 20, 1991.
/ 16 / UK Patent Application 2 263 766 A: Calibration method for gas concentration measurements. January 30, 1992.
/ 17 / Daetz M., Treptow T., Wiedermann B .: Microprocessor-controlled measuring device for gas monitoring. Technical measurement tm 54, H. 1111987 pp. 439-441.
/ 18 / Staab J .: Industrial gas analysis. A absorption spectrometry. Technischen Messen tm 60 (1993), pp. 111-117.
/ 19 / Staab J .: Industrial gas analysis. A absorption spectrometry. Technischen Messen tm 61 (1994), pp. 221-227.
/ 20 / Pichlmaier J .: Calibration technology for gas sensors. Technischen Messen tm 57 (1990), pp. 419- 423.
/ 21 / laid-open specification DE 44 41 023 A1: gas analyzer and gas analysis mechanism. 11/17/1994.
/ 22 / laid-open specification DE 38 03 108 A1: device for single or multi-component analysis by means of radiation absorption. 02/03/1988.
/ 23 / laid-open specification DE 196 05 053 A1: on-board diagnosis / OBD / method and device on a microscale for the continuous measurement of the emission of pollutants from motor vehicles. 02/12/1996.
11
Küvettenrohr aus Sintermaterial
Cell tube made of sintered material
22nd
Strahler
Spotlights
33rd
Reflektor
reflector
44th
Detektor
detector
55
Linselens
Fig.Fig.
2 Rückspülung mit Druckluft2 Backwashing with compressed air
6 Anschlußkupplung
7 Einlaßstutzen
8 Druckluft
9 Rußpartikel 6 connection coupling
7 inlet connection
8 compressed air
9 soot particles
1010th
SitzbelegungssensorSeat occupancy sensor
1111
Auspuffrohr
Exhaust pipe
1212th
Zylinderförmiger BehälterCylindrical container
Claims (4)
Priority Applications (22)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19743954A DE19743954C2 (en) | 1997-10-04 | 1997-10-04 | Cold start measuring system for measuring the cold start emission |
| PT98115926T PT909941E (en) | 1997-08-25 | 1998-08-24 | DEVICE FOR ANALYSIS OF AUTOMATIC VEHICLE EXHAUST GASES |
| PCT/DE1998/002494 WO1999010728A2 (en) | 1997-08-25 | 1998-08-24 | Device for analysing exhaust emissions from motor vehicles |
| JP51378899A JP3516691B2 (en) | 1997-08-25 | 1998-08-24 | Equipment for analyzing exhaust emissions from motor vehicles |
| BR9811356-9A BR9811356A (en) | 1997-08-25 | 1998-08-24 | Device for analyzing the exhaust gas of motor vehicles. |
| DK98115926T DK0909941T3 (en) | 1997-08-25 | 1998-08-24 | Infrared analysis of motor vehicle exhaust with zero point adjustment or correction for temperature operation |
| AT98115926T ATE202417T1 (en) | 1997-08-25 | 1998-08-24 | INFRARED MOTOR VEHICLE EMISSION ANALYSIS WITH ZERO POINT ADJUSTMENT OR TEMPERATURE DRIFT CORRECTION |
| AU90461/98A AU9046198A (en) | 1997-08-25 | 1998-08-24 | Device for analysing exhaust emissions from motor vehicles |
| RU2000104000/28A RU2180107C2 (en) | 1997-08-25 | 1998-08-24 | Automobile exhaust-gas analyzer |
| EP98115926A EP0909941B1 (en) | 1997-08-25 | 1998-08-24 | Infrared analysis of motor vehicle exhaust with zero point adjustment or correction of temperature drift |
| ES98115926T ES2157629T3 (en) | 1997-08-25 | 1998-08-24 | INFRARED ANALYSIS OF EXHAUST GASES OF MOTOR VEHICLES WITH ADJUSTMENT OF THE ZERO POINT OR CORRECTION OF THE INFLUENCE OF THE TEMPERATURE. |
| NZ502545A NZ502545A (en) | 1997-08-25 | 1998-08-24 | Infrared cell analysis of exhaust emissions with clean air calibration pump |
| CA002306483A CA2306483A1 (en) | 1997-08-25 | 1998-08-24 | Device for the analysis of motor vehicles exhaust emissions |
| US09/486,579 US6439040B1 (en) | 1997-08-25 | 1998-08-24 | Device for analyzing exhaust emissions from motor vehicles |
| EP98952506A EP1007945A2 (en) | 1997-08-25 | 1998-08-24 | Device for analysing exhaust emissions from motor vehicles |
| CN98807663.2A CN1265191A (en) | 1997-08-25 | 1998-08-24 | Device for analysing exhaust emissions from motor vehicles |
| KR10-2000-7000848A KR100372381B1 (en) | 1997-08-25 | 1998-08-24 | device for analysing exhaust emissions from motor vehicles |
| DE59800882T DE59800882D1 (en) | 1997-08-25 | 1998-08-24 | Infrared motor vehicle exhaust gas analysis with zero point adjustment or temperature drift correction |
| TR2000/00507T TR200000507T2 (en) | 1997-08-25 | 1998-08-24 | Instrument for the analysis of motor vehicle exhaust emissions |
| GR20010400965T GR3036115T3 (en) | 1997-08-25 | 2001-06-22 | Apparatus for analysing motor vehicles exhaust |
| CN01132597.6A CN1338625A (en) | 1997-08-25 | 2001-09-07 | Automotive exhaust analyzing device |
| HK02103218.8A HK1044587A1 (en) | 1997-08-25 | 2002-04-30 | Device for analysing exhaust emissions from motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19743954A DE19743954C2 (en) | 1997-10-04 | 1997-10-04 | Cold start measuring system for measuring the cold start emission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19743954A1 true DE19743954A1 (en) | 1999-06-02 |
| DE19743954C2 DE19743954C2 (en) | 2000-10-12 |
Family
ID=7844640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19743954A Expired - Fee Related DE19743954C2 (en) | 1997-08-25 | 1997-10-04 | Cold start measuring system for measuring the cold start emission |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19743954C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11460407B2 (en) | 2017-08-04 | 2022-10-04 | Carl Zeiss Jena Gmbh | Sample-based gas quality control by means of raman spectroscopy |
| CN117388201A (en) * | 2023-12-08 | 2024-01-12 | 至芯半导体(杭州)有限公司 | Gas concentration detection method and system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0138152A2 (en) * | 1983-10-18 | 1985-04-24 | Ab Leo | Cuvette |
| US4709150A (en) * | 1986-03-18 | 1987-11-24 | Burough Irvin G | Method and apparatus for detecting gas |
| DE9202965U1 (en) * | 1991-05-04 | 1992-07-23 | Keesmann, Till, 6900 Heidelberg, De | |
| US5163332A (en) * | 1990-04-02 | 1992-11-17 | Gaztech International Corporation | Gas sample chamber |
| GB2262338A (en) * | 1991-07-02 | 1993-06-16 | Stephen William Goom | Infra red gas detector |
| DE4235225A1 (en) * | 1992-10-13 | 1994-06-09 | Iris Gmbh Infrared & Intellige | Sensor arrangement for monitoring the conversion rate of an exhaust gas catalytic converter |
| DE4330997A1 (en) * | 1993-09-13 | 1995-03-16 | Bosch Gmbh Robert | Method for monitoring the light-off performance of a catalytic converter system in a motor vehicle |
| US5475223A (en) * | 1994-04-25 | 1995-12-12 | Ford Motor Company | System for monitoring exhaust gas composition |
| DE19605053A1 (en) * | 1995-03-10 | 1996-09-26 | Palocz Andresen Michael Dr Ing | On board diagnostic system for motor vehicle IC engine |
| DE19540943A1 (en) * | 1995-11-03 | 1997-05-07 | Bosch Gmbh Robert | Method for checking vehicle subsystems in motor vehicles |
| DE19541903A1 (en) * | 1995-11-10 | 1997-05-15 | Bayerische Motoren Werke Ag | Monitoring system for the exhaust gas purification of an internal combustion engine |
| DE19709197A1 (en) * | 1996-03-07 | 1997-10-30 | Whitaker Corp | Sensor apparatus of seat occupant detection system used in motor vehicle |
| DE19616571A1 (en) * | 1996-04-25 | 1997-10-30 | Paul Schreiber | Measuring cuvette, e.g. for spectral photometers or colour meters |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121520C2 (en) * | 1990-07-07 | 2003-02-13 | Volkswagen Ag | Circuit arrangement for preheating ignition devices in the manner of glow plugs for an internal combustion engine driving a motor vehicle |
-
1997
- 1997-10-04 DE DE19743954A patent/DE19743954C2/en not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0138152A2 (en) * | 1983-10-18 | 1985-04-24 | Ab Leo | Cuvette |
| US4709150A (en) * | 1986-03-18 | 1987-11-24 | Burough Irvin G | Method and apparatus for detecting gas |
| US5163332A (en) * | 1990-04-02 | 1992-11-17 | Gaztech International Corporation | Gas sample chamber |
| DE9202965U1 (en) * | 1991-05-04 | 1992-07-23 | Keesmann, Till, 6900 Heidelberg, De | |
| GB2262338A (en) * | 1991-07-02 | 1993-06-16 | Stephen William Goom | Infra red gas detector |
| DE4235225C2 (en) * | 1992-10-13 | 1994-11-10 | Iris Gmbh Infrared & Intellige | Sensor arrangement and method for monitoring the conversion rate of an exhaust gas catalytic converter |
| DE4235225A1 (en) * | 1992-10-13 | 1994-06-09 | Iris Gmbh Infrared & Intellige | Sensor arrangement for monitoring the conversion rate of an exhaust gas catalytic converter |
| DE4330997A1 (en) * | 1993-09-13 | 1995-03-16 | Bosch Gmbh Robert | Method for monitoring the light-off performance of a catalytic converter system in a motor vehicle |
| US5475223A (en) * | 1994-04-25 | 1995-12-12 | Ford Motor Company | System for monitoring exhaust gas composition |
| DE19605053A1 (en) * | 1995-03-10 | 1996-09-26 | Palocz Andresen Michael Dr Ing | On board diagnostic system for motor vehicle IC engine |
| DE19540943A1 (en) * | 1995-11-03 | 1997-05-07 | Bosch Gmbh Robert | Method for checking vehicle subsystems in motor vehicles |
| DE19541903A1 (en) * | 1995-11-10 | 1997-05-15 | Bayerische Motoren Werke Ag | Monitoring system for the exhaust gas purification of an internal combustion engine |
| DE19709197A1 (en) * | 1996-03-07 | 1997-10-30 | Whitaker Corp | Sensor apparatus of seat occupant detection system used in motor vehicle |
| DE19616571A1 (en) * | 1996-04-25 | 1997-10-30 | Paul Schreiber | Measuring cuvette, e.g. for spectral photometers or colour meters |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11460407B2 (en) | 2017-08-04 | 2022-10-04 | Carl Zeiss Jena Gmbh | Sample-based gas quality control by means of raman spectroscopy |
| CN117388201A (en) * | 2023-12-08 | 2024-01-12 | 至芯半导体(杭州)有限公司 | Gas concentration detection method and system |
| CN117388201B (en) * | 2023-12-08 | 2024-03-08 | 至芯半导体(杭州)有限公司 | Gas concentration detection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19743954C2 (en) | 2000-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3497309B1 (en) | Diagnostic method and device for checking the functionality of a component for exhaust-gas aftertreatment | |
| Howitt et al. | Cellular ceramic diesel particulate filter | |
| DE19714293C1 (en) | Procedure for checking the convertibility of a catalytic converter | |
| DE19747670C1 (en) | Exhaust gas cleaning system for internal combustion engine | |
| CN103016119B (en) | The on-board diagnostic method that NO2 in oxidation catalyst is formed | |
| RU2180107C2 (en) | Automobile exhaust-gas analyzer | |
| EP1084331B1 (en) | Method and device to monitor the functioning of a catalyst in an internal combustion engine | |
| EP2531835A1 (en) | Optical gas sensor | |
| CN104047691B (en) | The recovery of single palladium diesel oxidation catalyst controls | |
| DE3935149C2 (en) | ||
| DE102016224317A1 (en) | Method and control unit for carrying out diagnoses of an exhaust system of an internal combustion engine | |
| WO2012080347A2 (en) | Method for operating a soot sensor | |
| CN112412597B (en) | Catalyst degradation diagnosis system and catalyst degradation diagnosis method | |
| WO2015150153A2 (en) | Regeneration method for exhaust-gas aftertreatment systems | |
| DE4341632A1 (en) | Method and device for testing and regulating motor vehicles | |
| DE102008015722A1 (en) | exhaust gas purification device | |
| DE102019006426A1 (en) | Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method | |
| EP2347104B1 (en) | Method for diagnosing the performance of a catalytic converter | |
| DE19743954A1 (en) | Arrangement for analyzing motor vehicle exhaust gas | |
| Dearth et al. | SemtechD: the chassis roll evaluation of a commercial portable emission measurement system (PEMS) | |
| DE102018119156A1 (en) | Method and device for exhaust gas aftertreatment of an internal combustion engine | |
| EP0298240B1 (en) | Process and device for controlling the concentration of noxious matter in the exhaust gases from combustion engines | |
| DE19541903A1 (en) | Monitoring system for the exhaust gas purification of an internal combustion engine | |
| DE4124116A1 (en) | SPECTRAL PYROELECTRIC INFRARED MOTOR SENSOR | |
| Sluder et al. | Catalyzed diesel particulate filter performance in a light-duty vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8125 | Change of the main classification |
Ipc: G01N 21/35 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |