FR3050484B1 - REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE - Google Patents

REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE Download PDF

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Publication number
FR3050484B1
FR3050484B1 FR1653539A FR1653539A FR3050484B1 FR 3050484 B1 FR3050484 B1 FR 3050484B1 FR 1653539 A FR1653539 A FR 1653539A FR 1653539 A FR1653539 A FR 1653539A FR 3050484 B1 FR3050484 B1 FR 3050484B1
Authority
FR
France
Prior art keywords
reagent
reservoir
exhaust line
heat engine
injector
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.)
Active
Application number
FR1653539A
Other languages
French (fr)
Other versions
FR3050484A1 (en
Inventor
Mohamed Bozian
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Priority to FR1653539A priority Critical patent/FR3050484B1/en
Publication of FR3050484A1 publication Critical patent/FR3050484A1/en
Application granted granted Critical
Publication of FR3050484B1 publication Critical patent/FR3050484B1/en
Active 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
    • 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]
    • 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
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using 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
    • 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
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • 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
    • F01N2610/1466—Means for venting air out of conduits or tanks
    • 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
    • F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
    • 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

Landscapes

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

Abstract

L'invention concerne un système d'injection (1) de réactif dans la ligne d'échappement d'un moteur thermique, comprenant : - un réservoir (2) de réactif (4), - une pompe (6), - un injecteur (7), - un ensemble de conduits (7,8,9) assurant la connexion fluidique du réactif (4) depuis le réservoir(2) vers l'injecteur(7) par aspiration via la pompe (6), caractérisé en ce qu'il comprend un conduit supplémentaire (10) débouchant à une extrémité dans le réservoir (2) de réactif au-dessus du seuil de remplissage maximum (5) en réactif dudit réservoir et raccordé à l'autre de ses extrémités audit ensemble de conduits en amont de la pompe dans une zone de raccordement (11) munie d'un système de vannes pilotées autorisant le passage vers l'injecteur (7), soit du réactif, soit d'air prélevé au-dessus du niveau du réactif dans le réservoir via ledit conduit supplémentaire (10).The invention relates to a system for injecting reagent into the exhaust line of a heat engine, comprising: - a reservoir (2) of reagent (4), - a pump (6), - an injector (7), - a set of conduits (7,8,9) ensuring the fluid connection of the reagent (4) from the reservoir (2) to the injector (7) by suction via the pump (6), characterized in that that it comprises an additional conduit (10) opening at one end into the reservoir (2) of reagent above the maximum filling threshold (5) of reagent from said reservoir and connected at the other of its ends to said set of conduits upstream of the pump in a connection zone (11) provided with a system of piloted valves allowing passage to the injector (7), either of the reagent, or of air drawn above the level of the reagent in the tank via said additional conduit (10).

FR1653539A 2016-04-21 2016-04-21 REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE Active FR3050484B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1653539A FR3050484B1 (en) 2016-04-21 2016-04-21 REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1653539 2016-04-21
FR1653539A FR3050484B1 (en) 2016-04-21 2016-04-21 REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE

Publications (2)

Publication Number Publication Date
FR3050484A1 FR3050484A1 (en) 2017-10-27
FR3050484B1 true FR3050484B1 (en) 2020-01-10

Family

ID=56263925

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1653539A Active FR3050484B1 (en) 2016-04-21 2016-04-21 REAGENT INJECTION SYSTEM IN THE EXHAUST LINE OF A HEAT ENGINE

Country Status (1)

Country Link
FR (1) FR3050484B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004048075A1 (en) * 2004-10-02 2006-04-06 Robert Bosch Gmbh Dosing system for pollutant reduction in automotive exhaust gases
JP2008151094A (en) * 2006-12-20 2008-07-03 Aisan Ind Co Ltd Exhaust emission control device for internal combustion engine
US20130000743A1 (en) * 2011-06-29 2013-01-03 Ti Group Automotive Systems, L.L.C. Scr fluid distribution and circulation system
DE102012208936A1 (en) * 2012-05-29 2013-12-05 Robert Bosch Gmbh Injection system, exhaust aftertreatment device

Also Published As

Publication number Publication date
FR3050484A1 (en) 2017-10-27

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