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WO2019072753A1 - Procédé pour faire fonctionner un système de post-traitement des gaz d'échappement d'un moteur diesel avec commande des émissions en fonction du nh3 stocké - Google Patents

Procédé pour faire fonctionner un système de post-traitement des gaz d'échappement d'un moteur diesel avec commande des émissions en fonction du nh3 stocké Download PDF

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Publication number
WO2019072753A1
WO2019072753A1 PCT/EP2018/077296 EP2018077296W WO2019072753A1 WO 2019072753 A1 WO2019072753 A1 WO 2019072753A1 EP 2018077296 W EP2018077296 W EP 2018077296W WO 2019072753 A1 WO2019072753 A1 WO 2019072753A1
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WIPO (PCT)
Prior art keywords
scr
scr catalyst
exhaust gas
stored
calculated
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.)
Ceased
Application number
PCT/EP2018/077296
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German (de)
English (en)
Inventor
Hong Zhang
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.)
Continental Automotive GmbH
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Continental Automotive GmbH
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Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of WO2019072753A1 publication Critical patent/WO2019072753A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. by adjusting the 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
    • 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
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/12—Other sensor principles, e.g. using electro conductivity of substrate or radio frequency
    • 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
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • 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
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0422—Methods of control or diagnosing measuring the elapsed time
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1402—Exhaust gas composition
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • 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
    • F01N2900/1626—Catalyst activation temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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

Definitions

  • the present invention relates to a method for operating an exhaust aftertreatment system of a diesel engine having an exhaust line, in which an SCR catalyst is arranged, and the means for injecting an aqueous
  • the limit values for the exhaust emissions of diesel engines are set ever lower, and this applies in particular to real driving conditions with different ambient temperatures.
  • the NO x emissions of diesel engines play a major role here. Problems arise here in particular at cold temperatures during the heating phase of the corresponding catalysts.
  • SCR catalyst catalyst with selective catalytic reduction
  • the emission reduction described above only works to a limited extent. Performing a good and reliable NO x emissions reduction during the warm-up phase of a
  • This object is achieved in a method of the type specified in that the Abgasrohemissionen and / or the heating of the SCR catalyst during the warm-up phase of the diesel engine after the engine start depending on the ammonia stored in the SCR catalyst (NH 3 ) are controlled ,
  • the process has the advantage that in particular ⁇ sondere NO x emissions can be controlled in real driving conditions on cheap and easy way. This is done on the basis of the NH 3 stored in the SCR catalytic converter. The corresponding amount of ammonia stored in the SCR catalyst is measured and used as the basis for the control of emissions.
  • the measurement of the ammonia stored in the SCR catalytic converter can be carried out by means of an antenna sensor which is suitably arranged on the SCR catalytic converter.
  • SCR catalyst stored ammonia from readings of NO x sensors upstream and downstream of the SCR catalyst be ⁇ calculated.
  • the ge ⁇ stored in the SCR catalyst ammonia is estimated on the basis of the SCR efficiency, wherein the SCR efficiency from the measured values of NO x sensors is determined.
  • T_SCR_thr to release the dose of aqueous urea solution, so that the emissions can be kept below a limit.
  • This threshold may be, for example, 180 ° C.
  • delta_t_NH 3 (3 M_NH _real - M_NH 3 _LIM) / (NO x _raw * MAF / mol_mas)
  • NO x NO x concentration _raw as raw emission measured by
  • Mol_mass molar mass of the exhaust gas The time (delta_t_SCR_heat) that is needed until the
  • T_SCR_thr the temperature threshold
  • T_SCR_real instantaneous SCR temperature
  • the raw NO x emissions can be calculated , Specifically, from the equations (1) and (2) given above, the NO x raw emission can be calculated as follows:
  • the NO x raw emission should be below the value calculated according to equation (3). If the time measured by the NO x sensor is NO x -Rohemission higher than the calculated in the manner described above raw emission (according to equation (3)), the EGR rate can be increased.
  • the exhaust-gas temperature can also be controlled as a function of equation (1) and equation (2).
  • the exhaust gas temperature required is calculated as follows:
  • the exhaust gas temperature should therefore be higher than the exhaust gas temperature calculated according to equation (4). This can be achieved for example via post-injection or other measures, such as the electrical heating of the catalyst.
  • the NO x emissions can be conveniently and easily controlled under real driving conditions.
  • the NH 3 charge in the SCR catalytic converter can be determined via antenna sensors and / or NO x sensors.
  • Figure 1 is a schematic representation of a first
  • Embodiment of an exhaust aftertreatment ⁇ system of a diesel engine Embodiment of an exhaust aftertreatment ⁇ system of a diesel engine
  • FIG. 2 shows a second embodiment of a corresponding exhaust aftertreatment system.
  • the exhaust gas of the diesel engine in the FIGURE is removed from left to right via an exhaust gas line 1.
  • the exhaust gas passes successively an oxidation catalyst 2, a diesel particulate filter 3 and an SCR catalytic converter 6.
  • an aqueous urea solution at 5 is fed into the exhaust gas line from a container 4.
  • an antenna sensor 7 is provided on the SCR catalytic converter 6, which transmits its signal to a control / evaluation device, not shown here, which is the one in the SCR catalytic converter 6 stored NH 3 amount calculated.
  • the embodiment illustrated in FIG. 2 differs from that of FIG. 1 only in that, instead of an antenna sensor 7, an NO x sensor 8 is provided upstream and an NO x sensor 9 downstream of the SCR catalytic converter 6. Both sensors are also used to determine the ammonia storage in the
  • Sensors which calculates the SCR efficiency and, on that basis, estimates the amount of ammonia stored in the SCR catalyst.
  • the NH 3 amount measured in the manner described above and stored in the SCR catalyst 6 is used to calculate the raw exhaust emissions and / or the heating of the SCR catalyst during the warm-up phase of the diesel engine after engine start. In this way, in particular the NO x emissions can be controlled under real driving conditions in a simple and inexpensive manner.

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  • 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)
  • Analytical Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un système de post-traitement des gaz d'échappement d'un moteur diesel. Selon l'invention, les émissions brutes de gaz d'échappement et/ou l'échauffement d'un catalyseur SCR sont commandés pendant la phase de réchauffage du moteur diesel après le démarrage du moteur en fonction d'une quantité d'ammoniac stockée dans un catalyseur SCR. De cette manière, les émissions de NOx sont en particulier optimisées de manière simple et avantageuse.
PCT/EP2018/077296 2017-10-13 2018-10-08 Procédé pour faire fonctionner un système de post-traitement des gaz d'échappement d'un moteur diesel avec commande des émissions en fonction du nh3 stocké Ceased WO2019072753A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017218322.5A DE102017218322B4 (de) 2017-10-13 2017-10-13 Verfahren zum Betreiben einer Abgasnachbehandlungsanlage eines Dieselmotors mit Emissionssteuerung in Abhängigkeit vom gespeicherten NH3
DE102017218322.5 2017-10-13

Publications (1)

Publication Number Publication Date
WO2019072753A1 true WO2019072753A1 (fr) 2019-04-18

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PCT/EP2018/077296 Ceased WO2019072753A1 (fr) 2017-10-13 2018-10-08 Procédé pour faire fonctionner un système de post-traitement des gaz d'échappement d'un moteur diesel avec commande des émissions en fonction du nh3 stocké

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DE (1) DE102017218322B4 (fr)
WO (1) WO2019072753A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852624A (zh) * 2019-04-25 2020-10-30 丰田自动车株式会社 内燃机的排气净化装置
CN114396332A (zh) * 2022-01-17 2022-04-26 无锡伟博汽车科技有限公司 一种快速测量柴油车scr路线的最大nh3存储量的方法
CN120845158A (zh) * 2025-09-19 2025-10-28 无锡先进内燃动力技术创新中心 一种用于降低柴油机n2o排放的后处理方法及系统

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US20080216467A1 (en) * 2005-10-06 2008-09-11 Emitec Gesellschaft Fur Emissionstechnologie Mbh Method and Device for Reducing the Nitrogen Oxide Proportion in the Exhaust Gas of an Internal Combustion Engine
US20110265457A1 (en) * 2009-01-07 2011-11-03 Toyota Jidosha Kabushiki Kaisha Exhaust purifying device for internal combustion engine
US20150314239A1 (en) * 2012-11-07 2015-11-05 Toyota Jidosha Kabushiki Kaisha Exhaust gas control apparatus for internal combustion engine (as amended)
EP3081776A1 (fr) * 2015-04-14 2016-10-19 General Electric Company Système et procédé de commande d'injection d'urée dans la réduction catalytique sélective
EP3128142A1 (fr) * 2015-08-06 2017-02-08 Toyota Jidosha Kabushiki Kaisha Appareil de commande de gaz d'échappement et procédé de commande de gaz d'échappement pour moteur à combustion interne

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KR101251515B1 (ko) 2010-11-30 2013-04-05 현대자동차주식회사 배기가스 후처리 방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080216467A1 (en) * 2005-10-06 2008-09-11 Emitec Gesellschaft Fur Emissionstechnologie Mbh Method and Device for Reducing the Nitrogen Oxide Proportion in the Exhaust Gas of an Internal Combustion Engine
US20110265457A1 (en) * 2009-01-07 2011-11-03 Toyota Jidosha Kabushiki Kaisha Exhaust purifying device for internal combustion engine
US20150314239A1 (en) * 2012-11-07 2015-11-05 Toyota Jidosha Kabushiki Kaisha Exhaust gas control apparatus for internal combustion engine (as amended)
EP3081776A1 (fr) * 2015-04-14 2016-10-19 General Electric Company Système et procédé de commande d'injection d'urée dans la réduction catalytique sélective
EP3128142A1 (fr) * 2015-08-06 2017-02-08 Toyota Jidosha Kabushiki Kaisha Appareil de commande de gaz d'échappement et procédé de commande de gaz d'échappement pour moteur à combustion interne

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852624A (zh) * 2019-04-25 2020-10-30 丰田自动车株式会社 内燃机的排气净化装置
CN111852624B (zh) * 2019-04-25 2022-10-11 丰田自动车株式会社 内燃机的排气净化装置
CN114396332A (zh) * 2022-01-17 2022-04-26 无锡伟博汽车科技有限公司 一种快速测量柴油车scr路线的最大nh3存储量的方法
CN114396332B (zh) * 2022-01-17 2023-08-01 无锡伟博汽车科技有限公司 一种快速测量柴油车scr路线的最大nh3存储量的方法
CN120845158A (zh) * 2025-09-19 2025-10-28 无锡先进内燃动力技术创新中心 一种用于降低柴油机n2o排放的后处理方法及系统

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DE102017218322B4 (de) 2025-02-27
DE102017218322A1 (de) 2019-04-18

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