FR2971008B1 - Procede de surveillance d'un systeme de dosage, notamment pour un catalyseur scr - Google Patents

Procede de surveillance d'un systeme de dosage, notamment pour un catalyseur scr Download PDF

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Publication number
FR2971008B1
FR2971008B1 FR1250942A FR1250942A FR2971008B1 FR 2971008 B1 FR2971008 B1 FR 2971008B1 FR 1250942 A FR1250942 A FR 1250942A FR 1250942 A FR1250942 A FR 1250942A FR 2971008 B1 FR2971008 B1 FR 2971008B1
Authority
FR
France
Prior art keywords
monitoring
scr catalyst
dosing system
reference values
transfer pump
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
FR1250942A
Other languages
English (en)
Other versions
FR2971008A1 (fr
Inventor
Buelent BARCIN
Claus Linsenmaier
Cem Karaca
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 FR2971008A1 publication Critical patent/FR2971008A1/fr
Application granted granted Critical
Publication of FR2971008B1 publication Critical patent/FR2971008B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • 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
    • F01N2550/05—Systems for adding substances into 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
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • 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
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1808—Pressure
    • 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)
  • Exhaust Gas After Treatment (AREA)

Abstract

Procédé de surveillance d'un système de dosage, notamment pour un catalyseur SCR (12) comprenant un réservoir (14) contenant un liquide, une pompe de transfert (16) régulée en pression et au moins une soupape de dosage (13). On compare la valeur de commande de la pompe de transfert (16) à des valeurs de référence prédéfinies et en cas de dépassement vers le haut et/ou vers le bas des valeurs de référence, on estime que le système de dosage a un défaut.
FR1250942A 2011-02-02 2012-02-01 Procede de surveillance d'un systeme de dosage, notamment pour un catalyseur scr Expired - Fee Related FR2971008B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011003499A DE102011003499A1 (de) 2011-02-02 2011-02-02 Verfahren zur Überwachung eines Dosiersystems insbesondere für einen SCR-Katalysator
DE102011003499.4 2011-02-02

Publications (2)

Publication Number Publication Date
FR2971008A1 FR2971008A1 (fr) 2012-08-03
FR2971008B1 true FR2971008B1 (fr) 2020-06-19

Family

ID=46511265

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1250942A Expired - Fee Related FR2971008B1 (fr) 2011-02-02 2012-02-01 Procede de surveillance d'un systeme de dosage, notamment pour un catalyseur scr

Country Status (2)

Country Link
DE (1) DE102011003499A1 (fr)
FR (1) FR2971008B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9546585B2 (en) 2013-02-27 2017-01-17 Cummins Ip, Inc. Apparatus, method, and system for diagnosing reductant delivery performance
FR3002782B1 (fr) * 2013-03-01 2015-03-27 Peugeot Citroen Automobiles Sa Procede de detection d'un dysfonctionnement d'un systeme de reduction catalytique selective
DE102014210877A1 (de) * 2014-06-06 2015-12-17 Continental Automotive Gmbh Funktionsüberwachung einer Einspritzanlage
DE102014223069B4 (de) 2014-11-12 2023-06-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Erkennung von Gasblasen in einer Fördereinrichtung für Reduktionsmittel
DE102018200471A1 (de) * 2018-01-12 2019-07-18 Robert Bosch Gmbh Verfahren zur Detektion einer Funktionsstörung eines eine Förderpumpe aufweisenden Fördermoduls eines SCR-Katalysatorsystems
DE102018200469A1 (de) * 2018-01-12 2019-07-18 Robert Bosch Gmbh Verfahren zur Überwachung einer Veränderung eines Pumpenmerkmals über Lebenszeit eines eine Förderpumpe aufweisenden Fördermoduls eines SCR-Katalysatorsystems
DE102018200467A1 (de) * 2018-01-12 2019-07-18 Robert Bosch Gmbh Verfahren zum Einlernen von mindestens einem Pumpenmerkmal einer Pumpe eines Fördermoduls eines SCR-Katalysatorsystems

Also Published As

Publication number Publication date
DE102011003499A1 (de) 2012-08-02
FR2971008A1 (fr) 2012-08-03

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