WO2002071030A1 - Procede et appareil d'analyse d'emissions gazeuses et particulaires - Google Patents

Procede et appareil d'analyse d'emissions gazeuses et particulaires Download PDF

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Publication number
WO2002071030A1
WO2002071030A1 PCT/AU2002/000232 AU0200232W WO02071030A1 WO 2002071030 A1 WO2002071030 A1 WO 2002071030A1 AU 0200232 W AU0200232 W AU 0200232W WO 02071030 A1 WO02071030 A1 WO 02071030A1
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WO
WIPO (PCT)
Prior art keywords
raw exhaust
sample
diluting gas
withdrawn
exhaust sample
Prior art date
Application number
PCT/AU2002/000232
Other languages
English (en)
Inventor
Peter Anyon
Original Assignee
Parsons Advanced Technologies Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Parsons Advanced Technologies Inc. filed Critical Parsons Advanced Technologies Inc.
Publication of WO2002071030A1 publication Critical patent/WO2002071030A1/fr

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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
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • 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
    • F01N2270/00—Mixing air with exhaust gases
    • F01N2270/10—Mixing air with exhaust gases for rendering exhaust innocuous, e.g. by dilution
    • 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
    • F01N2560/07—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas flow rate or velocity meter or sensor, intake flow meters only when exclusively used to determine exhaust gas parameters
    • 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
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N2001/2264—Sampling from a flowing stream of gas with dilution
    • 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
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This invention relates to a method of and an assembly for sampling, preconditioning and measuring the concentrations and mass flow of gases and/or fine particle levels in a fluid stream.
  • the invention has particular but not exclusive application to the measurement of concentrations and mass flow of gases and/or fine particles in the exhaust stream of a combustion process.
  • Diesel particulate emissions comprising a mixture of very finely divided carbonaceous matter, sulfates and highly toxic compounds, are carcinogenic and can affect the neurological and reproductive systems of humans.
  • the most commonly used known method of meeting the above criteria is to entrain the full exhaust stream (or a known portion of the stream) with a flow of dilution air, and to draw the sample/diluent mixture through a critical flow venturi such that the sum of the instantaneous exhaust flow, plus the dilution air flow, remains constant. This is known as a Constant Volume Sampler.
  • a two-stage, or secondary dilution tunnel is frequently employed, together with its own mass-flow controllers and measurement systems.
  • FIG 1 schematically illustrates a known Constant Volume Sampling Emissions
  • the known method achieves three outcomes:
  • the critical flow (sonic) venturi maintains a nominally constant (and known) total flow of sample/diluent mixture; • if the sample exhaust is hot (as is often the case) the dilution air can reduce the temperature of the mixture to a level that published standards require for valid measurements to be obtained (ie, below 52deg Celsius for diesel particulate matter measurement); and
  • the sample mixture may be analysed using known gaseous and particulate measuring systems to determine the concentration of each emission of interest. Multiplying the total exhaust/diluent flow rate by the concentration of pollutant, either on a second-by-second basis or integrated over a period of time, delivers a mass emission rate for the whole exhaust stream.
  • a sample of the diluted exhaust stream may be drawn off, at a constant volumetric rate, into a bag or similar receptacle over the required total sampling period.
  • concentration of emissions measured as a homogenous mixture in the sample bag multiplied by the total flow through the venturi over the sampling period, delivers the total emissions of each pollutant over the same period.
  • the present invention aims to provide an alternative to known methods of and apparatus for testing particulate and gaseous exhaust emissions.
  • This invention in one aspect resides broadly in a method of testing particulate and gaseous exhaust emissions, the method including:- withdrawing a relatively small sample of raw exhaust from the raw exhaust stream; mixing a first portion of the withdrawn raw exhaust sample with a diluting gas in a predetermined constant proportion; testing a second portion of the withdrawn raw exhaust sample to measure gaseous emissions, and testing the mixed raw exhaust sample and diluting gas to measure particulate emissions. It is preferred that the method includes controlling the flow rate of the mixed raw exhaust sample and diluting gas.
  • the flow rate is controlled by applying a negative pressure to the mixed raw exhaust sample and diluting gas.
  • the mixing is performed at relatively low flow rates. It is preferred that the withdrawn raw exhaust sample and the diluting gas are respectively passed through substantially identical apertures.
  • the proportions of the withdrawn raw exhaust sample and the diluting gas are controlled by passing each through a respective predetermined number of the apertures.
  • the withdrawn raw exhaust sample may be mixed with the diluting gas in the predetermined proportion by:- introducing a first portion of the withdrawn raw exhaust sample and diluting gas into respective inlet means, and passing the first portion of the withdrawn raw exhaust sample and the diluting gas through a plurality of apertures into outlet means for receiving the mixed raw exhaust sample and diluting gas; the proportion of withdrawn raw exhaust sample to diluting gas being determined by the ratio of the total area of the apertures through which the withdrawn raw exhaust sample is passed to the total area of the apertures through which the diluting gas is passed.
  • the method includes substantially equalising the temperature of the withdrawn raw exhaust sample and diluting gas prior to mixing. It is also preferred that the temperature equalising is achieved by passing the withdrawn raw exhaust sample and diluting gas along coaxial pipes or the like.
  • this invention resides broadly in an apparatus for testing particulate and gaseous exhaust emissions, the apparatus including:- sampling means for withdrawing a relatively small sample of raw exhaust from the raw exhaust stream; mixing means for mixing a first portion of the withdrawn raw exhaust sample with a diluting gas in a predetermined constant proportion; gas testing means for testing a second portion of the withdrawn raw exhaust sample to measure gaseous emissions, and particulate testing means for testing the mixed raw exhaust sample and diluting gas to measure particulate emissions.
  • the apparatus includes flow rate control means for controlling the flow rate of the mixed raw exhaust sample and diluting gas.
  • the flow rate control means includes pump means for applying a negative pressure to the mixed raw exhaust sample and diluting gas.
  • the mixing means includes a plurality of substantially identical apertures for having passed through respective ones thereof the withdrawn raw exhaust sample and the diluting gas.
  • the mixing means includes respective inlet means for receiving the withdrawn raw exhaust sample and the diluting gas and outlet means for receiving the mixed raw exhaust sample and diluting gas.
  • the mixing means may include:- respective inlet means for receiving the first portion of the withdrawn raw exhaust sample and the diluting gas and outlet means for receiving the mixed raw exhaust sample and diluting gas, and a plurality of apertures for having passed through respective ones thereof the withdrawn raw exhaust sample and the diluting gas; wherein the predetermined proportion is the ratio of the total area of the apertures for having passed therethrough the withdrawn raw exhaust sample to the total area of the apertures for having passed therethrough the diluting gas.
  • the inlet and outlet means comprise coaxial pipes or the like whereby the temperature of the withdrawn raw exhaust sample and diluting gas is substantially equalised prior to mixing.
  • the mixing means includes baffle plate means the apertures forming passages therethrough.
  • baffle plate means separates the inlet means and the outlet means.
  • FIG 2 is a schematic diagram showing the elements of the invention connected to an internal combustion engine exhaust system
  • FIG 3 is a sectioned diagram of an example of a diluter for mixing a controlled portion of the raw exhaust stream with a controlled amount of diluent gas.
  • the internal combustion engine exhaust pipe (1) is connected via a gas-tight sleeve (2) to a length of flexible hose (3).
  • This hose is, in turn, connected to a circular duct (4), of sufficient length to minimise turbulence and to establish substantially laminar flow of the exhaust stream.
  • a circular duct (4) of sufficient length to minimise turbulence and to establish substantially laminar flow of the exhaust stream.
  • an averaging pitot-static tube assembly (5) is positioned to sense the stagnation and static pressures in the duct created by flow of the exhaust gases.
  • the pitot-static outputs are in turn connected to a differential pressure transducer (6), which measures the difference between the stagnation and static pressures in the duct.
  • a fast-response thermocouple and associated signal conditioning assembly (7) measures the temperature of the exhaust stream in the duct.
  • Both the differential pressure transducer and the thermocouple outputs are transmitted to a computer (not shown), which uses the measurements to calculate the instantaneous average velocity of the exhaust stream and hence, as the diameter of the duct is known, the mass flow of exhaust in the duct.
  • a sample line (8) allows a portion of the exhaust stream to be directed to the various analysers and instruments used to measure emissions of interest.
  • This sample line may be heated or insulated, as required, to prevent precipitation of water in the line through condensation due to cooling of the sample.
  • a known exhaust opacity meter (9) may optionally be connected to the sample line to continuously or periodically measure opacity (visible smoke) levels of the exhaust stream.
  • Known low-cost gas analysers suitable for measuring gaseous concentrations of specific gases in a raw exhaust stream, may also be arranged to communicate with the sample line.
  • the sample for gaseous analysis is first passed through a filter (10) to remove smoke and particulates which could contaminate the optical systems in the gas analyser(s).
  • An arrangement for drying or de-watering the gaseous sample may optionally be fitted in series with the filter.
  • a sample of the exhaust stream is drawn through a diluter assembly (12) described in more detail below with reference to FIG 3.
  • the diluted stream is then conducted to a known means of measuring particulate matter concentration (14).
  • Dilution of the raw exhaust sample is achieved using a suitable, substantially non-reactive gas such as dry nitrogen or dried and filtered air. If ambient air is at low relative humidity levels, it is feasible to only filter the air to remove background particulate contamination.
  • a pump optionally a vane or diaphragm type, draws both the dilution gas and the exhaust sample through the diluter assembly, wherein the two streams are mixed in a known proportion.
  • FIG 3 is a sectioned diagram of one embodiment of a diluter for mixing a controlled portion of the raw exhaust stream with a controlled amount of diluent gas.
  • Inner rigid tube (16) is connected to the raw gas sample line.
  • An outer casing (17) is located substantially coaxial with the inner tube and is fitted with an inlet tube (23) for dilution gas towards the end in closest proximity to the raw exhaust sample inlet.
  • a threaded cap (18) is connected to the outer casing (17) such that the assembly comprises a chamber, which is closed except for the two inlet tubes and one outlet tube.
  • the threaded cap and the outer casing locate and engage an orifice plate (20), which, through the use of appropriate seals (not shown) permits the axial flow of dilution gas only through a number of small holes (21) normal to the face of orifice plate (20).
  • the orifice holes (21) may optionally be arranged in a circular pattern coaxial with the body of the diluter assembly.
  • a second orifice plate (19) is retained by a threaded cap and again sealed to only perr ⁇ it the axial passage of exhaust sample through one or more small orifice holes (22) normal to the face of orifice plate (19).
  • both orifice plates are of the same thickness and that all orifice holes are of substantially the same diameter and finish.
  • Both the dilution gas line and the raw exhaust sample line are arranged such that they are maintained at substantially ambient atmospheric pressure.
  • a negative pressure is applied to the diluted sample outlet of the diluter assembly, using a suitable pumping means (15). Because this negative pressure acts on both orifice plates (19 & 20) and their corresponding orifice holes (22 and 21), an axial flow of raw exhaust sample and dilution gas is induced.
  • the flow rate of dilution gas relative to the flow rate of exhaust sample will be predetermined and in the ratio of the number of orifice holes in each plate, respectively. This predetermined dilution ratio will be maintained regardless of the actual level of pressure differential applied.
  • the dilution and sample streams in this example run coaxially for a suitable distance prior to passing through the orifices. This technique promotes temperature equalisation between the two streams.
  • the assembly includes a means of connecting the exhaust outlet of an internal combustion engine to an emissions measuring apparatus such that either a portion (or optionally the total) of the exhaust gas flow is conducted to the emissions measuring apparatus.
  • Means are provided to continuously or periodically measure the total exhaust mass flow of the engine.
  • a tubular sample probe, or the like is arranged in the emissions measuring apparatus to conduct a portion of the exhaust stream to a means of diluting the exhaust stream with a known proportion of suitable dilution gas.
  • the dilution means is arranged such that the predetermined ratio of diluent to exhaust sample remains substantially constant regardless of the temperature and/or pressure of the diluent and the exhaust sample.
  • the means for controlling the flow of both exhaust sample and diluent gas also includes means for mixing the exhaust sample and the diluent in such a manner as to achieve a substantially homogenous mixture that is at a temperature consistent with that prescribed in applicable standards or regulations pertaining to the measurement of particles in an exhaust stream.
  • the predetermined ratio of diluent gas to exhaust sample is controlled at a rate such that the dew point temperature of the mixture is lower than the actual temperature of the mixture as it passes into and through the particulate measuring instrument. This ensures that particulates in the sample stream are not entrapped by condensed vapours in the sample line, nor can small condensed water particles entrained in the sample stream lead to erroneous particle concentration measurements.
  • the present invention can be characterised as a " variable volume, constant dilution” system.
  • the total volumetric flow rate of diluent/exhaust sample mixture is limited to only what is required for correct operation of the known particulate emissions measuring instrument or apparatus.
  • gaseous emissions measuring instruments For the measurement of gaseous emissions, similar tubular sample probes or the like, communicate directly with the gaseous emissions measuring instruments. If known gaseous emissions measuring instruments are used that are affected by the presence of smoke, particulates or water content in the sample, means are provided to filter and/or de-water the sample prior to entry into the instruments. Such de-watering may optionally be achieved through the use of a water trap, desiccant absorber, chiller or the like.
  • suitable known means of measuring opacity shall be arranged to communicate directly with a portion of the raw exhaust stream.
  • the present invention which provides a reliable and accurate measurement of emission rates of fine particulates in the exhaust stream of combustion processes, has a number of advantages over known systems and methods.
  • the present invention provides a significant advance in the performance/cost ratio of emissions measuring equipment by enabling the use of both raw and diluted exhaust stream measurement in a single unit.
  • the system and its principal components described above constitute a compact, simple, reliable and low cost alternative to existing arrangements for measuring, controlling and pre-conditioning the flow of exhaust constituents prior to determining the concentration of emissions in the stream using known emission measuring instruments.
  • the present invention does not require the use of large, bulky and expensive ducts, fans and venturi as are commonly employed in existing systems utilised for similar tasks.
  • the present invention can, if required, be packaged into a compact, lightweight container capable of being lifted readily by a human and is thus highly suitable for remote site testing or on-vehicle measurements of emissions.
  • the present invention has no moving parts except for a simple and rugged pump, the system is much more amenable to transportation than other arrangements that are simply miniaturised versions of the full-scale prior art described above.
  • the gaseous emissions measuring instruments must be very sensitive and of a much higher grade than would be required to obtain acceptably accurate measurements of undiluted, raw exhaust gas concentrations.
  • the dilution gas and exhaust stream orifices may be arranged in alternative configurations to FIG 3.
  • the dilution orifices may be located on a cylindrical or conical section of the outer casing, such that their axes are directed towards the axis of revolution of the outer casing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un procédé d'analyse d'émissions d'échappement gazeuses et particulaires, consistant à extraire un échantillon relativement petit d'échappement brut (8) à partir d'un flux d'échappement brut (4), à mélanger à un gaz de dilution une première portion de l'échantillon d'échappement brut extrait dans une proportion constante prédéterminée (12), à analyser une seconde portion de l'échantillon d'échappement brut extrait afin de mesurer des émissions gazeuses (11), puis à analyser le mélange échantillon d'émission brute et gaz de dilution afin de mesurer des émissions particulaires (14).
PCT/AU2002/000232 2001-03-02 2002-03-04 Procede et appareil d'analyse d'emissions gazeuses et particulaires WO2002071030A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR3479A AUPR347901A0 (en) 2001-03-02 2001-03-02 Particulate and gaseous emission testing method of apparatus
AUPR3479 2001-03-02

Publications (1)

Publication Number Publication Date
WO2002071030A1 true WO2002071030A1 (fr) 2002-09-12

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WO (1) WO2002071030A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1813787A3 (fr) * 2005-12-29 2009-03-04 DiTest Fahrzeugdiagnose GmbH Procédé et dispositif pour examiner des gaz d'échappement dans moteurs diesel
US7798020B2 (en) * 2004-07-21 2010-09-21 Sensors, Inc. Fast response proportional sampling system and method for exhaust gas analysis
EP2302354A1 (fr) * 2008-07-16 2011-03-30 HORIBA, Ltd. Dispositif de mesure de matière particulaire
EP2631628A1 (fr) * 2012-02-22 2013-08-28 CGS Prozessanalytic GmbH Procédé et dispositif de mesure, notamment de gaz hilarant ou d'ammoniaque dans des gaz d'échappement de moteurs à combustion interne
CN103323292A (zh) * 2013-06-09 2013-09-25 上海大学 一种捕集燃煤排放不同粒径颗粒物的采集系统
FR2991770A1 (fr) * 2012-06-11 2013-12-13 Ecomesure Procede de conditionnement d'un echantillon de melange gazeux transitant dans une canalisation et dispositif correspondant
CN104155153A (zh) * 2013-05-15 2014-11-19 吉林省电力有限公司电力科学研究院 一种负压烟道烟尘采样装置
AT514381A1 (de) * 2013-04-04 2014-12-15 Avl List Gmbh Venturiverdünner
CZ305784B6 (cs) * 2009-11-12 2016-03-16 Technická univerzita v Liberci Zařízení k zjišťování koncentrace a/nebo množství alespoň jedné látky ve výfukových emisích ze spalovacích motorů
WO2017154688A1 (fr) * 2016-03-09 2017-09-14 本田技研工業株式会社 Procédé et dispositif d'analyse d'émission ouverte
CN109838289A (zh) * 2017-11-27 2019-06-04 罗伯特·博世有限公司 尿素水溶液喷射系统的回抽过程监测系统和方法
EP3683563A1 (fr) * 2019-01-18 2020-07-22 Shanghai Volvo Car Research and Development Co., Ltd. Système et procédé de surveillance de condensation aqueuse interne d'un tunnel de dilution pour des essais d'émission de véhicule

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CN111397977B (zh) * 2020-05-08 2023-05-23 西安热工研究院有限公司 固定污染源废气中硒及硒化合物采样及测试的系统及方法
CN114459958B (zh) * 2022-02-11 2023-07-21 华北电力大学（保定） 一种气流特征快速测量装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058440A (en) * 1990-09-04 1991-10-22 Caterpillar Inc. Gas sampling device and dilution tunnel used therewith
US5090258A (en) * 1989-09-29 1992-02-25 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Multiple flow-dividing dilution tunnel system
EP0471174B1 (fr) * 1990-08-14 1996-03-20 Steyr Nutzfahrzeuge Ag Installation pour l'analyse d'éléments polluants, en particulier d'émissions de particules de gaz d'échappement de moteurs diesel, avec un dispositif de dilution d'un courant partiel
EP0611962B1 (fr) * 1993-02-19 1998-04-29 IVECO FIAT S.p.A. Méthode et dispositif pour l'extraction de particules des gaz d'échappement de moteurs diesel
US6016711A (en) * 1997-11-21 2000-01-25 Southwest Research Institute Mobile vehicle emissions sampling system
JP2001188031A (ja) * 1999-10-18 2001-07-10 Firmware Technology Co Ltd 排気ガス中の粒子状物質の測定方法および測定装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090258A (en) * 1989-09-29 1992-02-25 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Multiple flow-dividing dilution tunnel system
EP0471174B1 (fr) * 1990-08-14 1996-03-20 Steyr Nutzfahrzeuge Ag Installation pour l'analyse d'éléments polluants, en particulier d'émissions de particules de gaz d'échappement de moteurs diesel, avec un dispositif de dilution d'un courant partiel
US5058440A (en) * 1990-09-04 1991-10-22 Caterpillar Inc. Gas sampling device and dilution tunnel used therewith
EP0611962B1 (fr) * 1993-02-19 1998-04-29 IVECO FIAT S.p.A. Méthode et dispositif pour l'extraction de particules des gaz d'échappement de moteurs diesel
US6016711A (en) * 1997-11-21 2000-01-25 Southwest Research Institute Mobile vehicle emissions sampling system
JP2001188031A (ja) * 1999-10-18 2001-07-10 Firmware Technology Co Ltd 排気ガス中の粒子状物質の測定方法および測定装置

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7798020B2 (en) * 2004-07-21 2010-09-21 Sensors, Inc. Fast response proportional sampling system and method for exhaust gas analysis
EP1813787A3 (fr) * 2005-12-29 2009-03-04 DiTest Fahrzeugdiagnose GmbH Procédé et dispositif pour examiner des gaz d'échappement dans moteurs diesel
EP2302354A1 (fr) * 2008-07-16 2011-03-30 HORIBA, Ltd. Dispositif de mesure de matière particulaire
EP2302354A4 (fr) * 2008-07-16 2014-05-14 Horiba Ltd Dispositif de mesure de matière particulaire
EP2730913A1 (fr) * 2008-07-16 2014-05-14 Horiba, Ltd. Dispositif de mesure de matière particulaire
CZ305784B6 (cs) * 2009-11-12 2016-03-16 Technická univerzita v Liberci Zařízení k zjišťování koncentrace a/nebo množství alespoň jedné látky ve výfukových emisích ze spalovacích motorů
EP2631628A1 (fr) * 2012-02-22 2013-08-28 CGS Prozessanalytic GmbH Procédé et dispositif de mesure, notamment de gaz hilarant ou d'ammoniaque dans des gaz d'échappement de moteurs à combustion interne
FR2991770A1 (fr) * 2012-06-11 2013-12-13 Ecomesure Procede de conditionnement d'un echantillon de melange gazeux transitant dans une canalisation et dispositif correspondant
WO2013186479A1 (fr) * 2012-06-11 2013-12-19 Ecomesure Procede de conditionnement d'un echantillon de melange gazeux transitant dans une canalisation et dispositif correspondant
CN104583751A (zh) * 2012-06-11 2015-04-29 易科摩洛公司 调控在管道中流动的气态混合物的样本的方法及对应设备
AT514381A1 (de) * 2013-04-04 2014-12-15 Avl List Gmbh Venturiverdünner
AT514381B1 (de) * 2013-04-04 2015-05-15 Avl List Gmbh Venturiverdünner
CN104155153A (zh) * 2013-05-15 2014-11-19 吉林省电力有限公司电力科学研究院 一种负压烟道烟尘采样装置
CN103323292A (zh) * 2013-06-09 2013-09-25 上海大学 一种捕集燃煤排放不同粒径颗粒物的采集系统
WO2017154688A1 (fr) * 2016-03-09 2017-09-14 本田技研工業株式会社 Procédé et dispositif d'analyse d'émission ouverte
JP2017161373A (ja) * 2016-03-09 2017-09-14 本田技研工業株式会社 オープンエミッション分析方法及び装置
US10794799B2 (en) 2016-03-09 2020-10-06 Honda Motor Co., Ltd. Open emission analysis method and device
CN109838289A (zh) * 2017-11-27 2019-06-04 罗伯特·博世有限公司 尿素水溶液喷射系统的回抽过程监测系统和方法
CN109838289B (zh) * 2017-11-27 2022-03-15 罗伯特·博世有限公司 尿素水溶液喷射系统的回抽过程监测系统和方法
EP3683563A1 (fr) * 2019-01-18 2020-07-22 Shanghai Volvo Car Research and Development Co., Ltd. Système et procédé de surveillance de condensation aqueuse interne d'un tunnel de dilution pour des essais d'émission de véhicule

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