FR3035442B1 - PROCESS FOR MONITORING AN SCR CATALYST - Google Patents

PROCESS FOR MONITORING AN SCR CATALYST Download PDF

Info

Publication number
FR3035442B1
FR3035442B1 FR1653537A FR1653537A FR3035442B1 FR 3035442 B1 FR3035442 B1 FR 3035442B1 FR 1653537 A FR1653537 A FR 1653537A FR 1653537 A FR1653537 A FR 1653537A FR 3035442 B1 FR3035442 B1 FR 3035442B1
Authority
FR
France
Prior art keywords
scr catalyst
monitoring
reducing agent
predetermined
overstoichiometric
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
Application number
FR1653537A
Other languages
French (fr)
Other versions
FR3035442A1 (en
Inventor
Alexander Franz
Cornelia Nagel
Tobias Pfister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR3035442A1 publication Critical patent/FR3035442A1/en
Application granted granted Critical
Publication of FR3035442B1 publication Critical patent/FR3035442B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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, e.g. for catalytic activity
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/005—Electrical control of exhaust gas treating apparatus using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
    • 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
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1616—NH3-slip from catalyst
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1621—Catalyst conversion efficiency
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1622—Catalyst reducing agent absorption capacity or consumption amount
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Procédé pour surveiller un catalyseur SCR, notamment en surveillant sa capacité de stockage de NH3 dans lequel, à des fins de diagnostic, on prévoit un dosage sur-stœchiométrique (42) d'agent réducteur dans le catalyseur SCR jusqu'à atteindre un niveau de NH3, prédéterminé ou une dose d'agent réducteur (38, 45) prédéterminée. On termine prématurément la phase de dosage surstoechiométrique (42) dès qu'on conclut à un glissement de NH3 à l'aide de signaux augmentés fournis par un capteur NOx installé en aval du catalyseur SCR.A method of monitoring an SCR catalyst, in particular by monitoring its NH3 storage capacity in which, for diagnostic purposes, an over-stoichiometric dosage (42) of reducing agent in the SCR catalyst is provided until a level of NH3, predetermined or a predetermined dose of reducing agent (38, 45). The overstoichiometric dosing phase (42) is prematurely terminated as soon as an NH3 slip is concluded with the aid of increased signals supplied by an NOx sensor installed downstream of the SCR catalyst.

FR1653537A 2015-04-27 2016-04-21 PROCESS FOR MONITORING AN SCR CATALYST Expired - Fee Related FR3035442B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015207670.9A DE102015207670A1 (en) 2015-04-27 2015-04-27 Method for monitoring an SCR catalyst

Publications (2)

Publication Number Publication Date
FR3035442A1 FR3035442A1 (en) 2016-10-28
FR3035442B1 true FR3035442B1 (en) 2021-02-19

Family

ID=57110723

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1653537A Expired - Fee Related FR3035442B1 (en) 2015-04-27 2016-04-21 PROCESS FOR MONITORING AN SCR CATALYST

Country Status (2)

Country Link
DE (1) DE102015207670A1 (en)
FR (1) FR3035442B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3546712A4 (en) * 2016-11-24 2019-11-20 Toyota Jidosha Kabushiki Kaisha Exhaust gas purifying device abnormality diagnosing system
DE102017218480A1 (en) 2017-10-16 2019-04-18 Robert Bosch Gmbh A method of determining NOx concentration and NH3 slip downstream of an SCR catalyst
DE102018217047B4 (en) * 2018-10-05 2022-01-27 Vitesco Technologies GmbH Method and device for determining a state of an exhaust gas treatment element for a motor vehicle
WO2021026317A1 (en) * 2019-08-07 2021-02-11 Cummins Inc. Systems and methods for measuring exhaust gas species and scr catalyst nox storage for scr-related controls and diagnostics
CN114964793B (en) * 2022-04-24 2024-07-19 潍柴动力股份有限公司 SDPF ash load detection method and equipment, SDPF ash load monitoring method and device and vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029740B4 (en) 2010-06-07 2022-05-12 Robert Bosch Gmbh Procedure for monitoring an SCR catalytic converter
DE102012201749B4 (en) 2012-02-07 2024-02-15 Robert Bosch Gmbh Method for monitoring an SCR catalytic converter

Also Published As

Publication number Publication date
DE102015207670A1 (en) 2016-10-27
FR3035442A1 (en) 2016-10-28

Similar Documents

Publication Publication Date Title
FR3035442B1 (en) PROCESS FOR MONITORING AN SCR CATALYST
FR2986038B1 (en) METHOD FOR DETECTING THE BELLING OF A DOSING VALVE OF A CATALYTIC REDUCTION CATALYST CATALYST SYSTEM
EA201690286A1 (en) SYSTEMS AND METHODS FOR MEASURING THE FLOW OF MULTI-PHASE FLOW WITH ACCOUNT OF DISSOLVED GAS
JP2011131070A5 (en)
CL2014002684A1 (en) Method for monitoring a fluid system of a mining machine, comprises detecting a pressure level of a fluid, analyzing the pressure level data, determining at least one result, and issuing an alert; mining machine
GB2549017A (en) Determining the oleophilic to aqueous phase fluid ratio for drilling fluids
FR3011770B1 (en) METHOD FOR OPERATING A SYSTEM FOR MONITORING THE PRESSURE AND / OR THE TEMPERATURE OF THE TIRES OF A VEHICLE AND DEVICE FOR PERFORMING IT
BR112017026340A2 (en) system and method for monitoring an oscillating component
FR3027819B1 (en) METHOD FOR DEACIDIFYING A GASEOUS EFFLUENT BY AN ABSORBENT SOLUTION WITH STEAM INJECTION IN THE REGENERATED ABSORBENT SOLUTION AND DEVICE FOR CARRYING OUT SAID METHOD
BR112015009005A2 (en) aldehyde removal in acetic acid production
FR3020682B1 (en) METHOD AND SYSTEM FOR DETECTING AT LEAST ONE PARTICLE IN A BODILY LIQUID, AND ASSOCIATED METHOD FOR DIAGNOSING MENINGITIS
FR2971008B1 (en) METHOD FOR MONITORING A DOSING SYSTEM, PARTICULARLY FOR AN SCR CATALYST
FR3013123B1 (en) METHOD AND DEVICE FOR MONITORING A RISK AREA, IN PARTICULAR A SWIMMING AREA
IT201600105530A1 (en) PROCEDURE FOR THE PREPARATION OF POLIBUTADIENE 1.2 SINDIOTATTICO IN THE PRESENCE OF A CATALYTIC SYSTEM INCLUDING A PYRIDYLUM IRON COMPLEX
RU2016132304A (en) PIPELINE CONTROL
PH12018500246A1 (en) Method and device for determining a substance concentration or a substance in a liquid medium
FR3041918B1 (en) METHOD AND DEVICE FOR MONITORING THE DRIVING OF A VEHICLE, METHOD OF PREVENTING THE REVERSE OF SAID VEHICLE
FR2990935B1 (en) METHOD AND DEVICE FOR PROCESSING THE PURIFICATION OF LIQUID EFFLUENTS, ESPECIALLY AQUEOUS BY PHOTOCATALYSIS
GB2546034A (en) Sweep efficiency for hole cleaning
WO2018034751A3 (en) Use of seawater conditioning byproducts for energy industry operations
FR3024540B1 (en) FLOW METER USED FOR THE ASSAY OF ENERGY USED IN A PROCESS USING A CRYOGENIC FLUID
FR3004538B1 (en) METHOD FOR DETERMINING THE ACTUAL QUANTITY OF AN ACTIVE PRODUCT ENTERING A CATALYSIS DEVICE OF AN EXHAUST LINE OF A VEHICLE
EA201800160A1 (en) GRANULES FROM DISPLEMENTED POLYPROPYLENE
FR3034870B1 (en) OPTODE TYPE CHEMICAL SENSOR, PROCESS FOR PREPARING THE SAME AND USES THEREOF
FR3032592B1 (en) DEVICE FOR GUIDING A COUPLING DRIVEN BY A VEHICLE, AND CORRESPONDING METHOD

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 2

PLFP Fee payment

Year of fee payment: 3

PLSC Publication of the preliminary search report

Effective date: 20181102

PLFP Fee payment

Year of fee payment: 4

PLFP Fee payment

Year of fee payment: 5

PLFP Fee payment

Year of fee payment: 6

PLFP Fee payment

Year of fee payment: 7

ST Notification of lapse

Effective date: 20231205