FR3126237B1 - METHOD FOR COOLING A UREA DELIVERY PIPE - Google Patents

METHOD FOR COOLING A UREA DELIVERY PIPE Download PDF

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Publication number
FR3126237B1
FR3126237B1 FR2108825A FR2108825A FR3126237B1 FR 3126237 B1 FR3126237 B1 FR 3126237B1 FR 2108825 A FR2108825 A FR 2108825A FR 2108825 A FR2108825 A FR 2108825A FR 3126237 B1 FR3126237 B1 FR 3126237B1
Authority
FR
France
Prior art keywords
urea
cooling
exhaust gas
delivery pipe
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
FR2108825A
Other languages
French (fr)
Other versions
FR3126237A1 (en
Inventor
Jonathan Brettar
De Almeida David Nunes
Jérémy Lecaudey
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.)
Vitesco Technologies
Original Assignee
Vitesco Technologies
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 Vitesco Technologies filed Critical Vitesco Technologies
Priority to FR2108825A priority Critical patent/FR3126237B1/en
Priority to PCT/EP2022/073006 priority patent/WO2023025639A1/en
Publication of FR3126237A1 publication Critical patent/FR3126237A1/en
Application granted granted Critical
Publication of FR3126237B1 publication Critical patent/FR3126237B1/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]
    • 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
    • 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
    • F01N2260/024—Exhaust treating devices having provisions not otherwise provided for for cooling the device using a liquid
    • 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
    • F01N2610/1433—Pumps
    • F01N2610/144—Control thereof
    • 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
    • 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
    • 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
    • F01N2900/1602—Temperature of exhaust gas 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
    • 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
    • F01N2900/1811—Temperature

Landscapes

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

Abstract

PROCEDE DE REFROIDISSEMENT D’UN CONDUIT D’ACHEMINEMENT D’UREE Un aspect de l’invention concerne un procédé (100) de refroidissement d’un conduit d’acheminement d’urée d’une ligne d’urée comportant les étapes de : activer (101) une pompe (18) pour créer une dépression dans la ligne d’urée ;appliquer (102) une pression ambiante dans la ligne d’urée ;mesurer (103) une température des gaz d’échappement ;mesurer (104) une température d’un injecteur d’urée ;si la température des gaz d’échappement mesurée est supérieure à un seuil de température des gaz d’échappement et la température de l’injecteur mesurée est supérieure à un seuil de température d’injecteur, le procédé (100) comporte une étape de refroidir (105) le conduit d’acheminement d’urée par l’introduction, puis le retrait de solution d’urée dans le conduit d’acheminement d’urée. Figure à publier avec l’abrégé : Figure 3METHOD FOR COOLING A UREA DELIVERY PIPE One aspect of the invention relates to a method (100) for cooling a urea conveyance pipe of a urea line comprising the steps of: activating (101) a pump (18) for creating a vacuum in the urea line; applying (102) an ambient pressure in the urea line; measuring (103) an exhaust gas temperature; measuring (104) a temperature of a urea injector; if the measured exhaust gas temperature is above an exhaust gas temperature threshold and the measured injector temperature is above an injector temperature threshold, the method (100) comprises a step of cooling (105) the urea delivery conduit by introducing and then withdrawing urea solution into the urea delivery conduit. Figure to be published with the abstract: Figure 3

FR2108825A 2021-08-23 2021-08-23 METHOD FOR COOLING A UREA DELIVERY PIPE Active FR3126237B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2108825A FR3126237B1 (en) 2021-08-23 2021-08-23 METHOD FOR COOLING A UREA DELIVERY PIPE
PCT/EP2022/073006 WO2023025639A1 (en) 2021-08-23 2022-08-17 Method for cooling a urea feed pipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2108825 2021-08-23
FR2108825A FR3126237B1 (en) 2021-08-23 2021-08-23 METHOD FOR COOLING A UREA DELIVERY PIPE

Publications (2)

Publication Number Publication Date
FR3126237A1 FR3126237A1 (en) 2023-02-24
FR3126237B1 true FR3126237B1 (en) 2023-11-03

Family

ID=77711257

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2108825A Active FR3126237B1 (en) 2021-08-23 2021-08-23 METHOD FOR COOLING A UREA DELIVERY PIPE

Country Status (2)

Country Link
FR (1) FR3126237B1 (en)
WO (1) WO2023025639A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5912232B2 (en) * 2010-07-08 2016-04-27 いすゞ自動車株式会社 SCR system
JP5906637B2 (en) 2011-09-28 2016-04-20 いすゞ自動車株式会社 Foreign matter removal method and selective reduction catalyst system
FR3010732B1 (en) * 2013-09-19 2015-10-02 Peugeot Citroen Automobiles Sa METHOD FOR PURGING A SELECTIVE CATALYTIC REDUCTION SYSTEM
JP6570255B2 (en) * 2015-02-06 2019-09-04 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Control device and control method for reducing agent injection device

Also Published As

Publication number Publication date
FR3126237A1 (en) 2023-02-24
WO2023025639A1 (en) 2023-03-02

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