RU2015138472A - Способ и система снижения выброса оксидов азота при работе двигателя (варианты) - Google Patents

Способ и система снижения выброса оксидов азота при работе двигателя (варианты) Download PDF

Info

Publication number
RU2015138472A
RU2015138472A RU2015138472A RU2015138472A RU2015138472A RU 2015138472 A RU2015138472 A RU 2015138472A RU 2015138472 A RU2015138472 A RU 2015138472A RU 2015138472 A RU2015138472 A RU 2015138472A RU 2015138472 A RU2015138472 A RU 2015138472A
Authority
RU
Russia
Prior art keywords
ppoa
ratio
upstream
temperature
icv
Prior art date
Application number
RU2015138472A
Other languages
English (en)
Other versions
RU2015138472A3 (ru
RU2668593C2 (ru
Inventor
Джозеф Роберт ТЕЙС
Кристин Кэй ЛАМБЕРТ
Джастин Энтони УРА
Original Assignee
Форд Глобал Текнолоджиз, Ллк
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 Форд Глобал Текнолоджиз, Ллк filed Critical Форд Глобал Текнолоджиз, Ллк
Publication of RU2015138472A publication Critical patent/RU2015138472A/ru
Publication of RU2015138472A3 publication Critical patent/RU2015138472A3/ru
Application granted granted Critical
Publication of RU2668593C2 publication Critical patent/RU2668593C2/ru

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1461—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine
    • F02D41/1462—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine with determination means using an estimation
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1461—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1463—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases downstream of exhaust gas treatment apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/401—Controlling injection timing
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • F01N2410/06—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device at cold starting
    • 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
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in 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
    • 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
    • F01N2900/16—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
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1614—NOx amount trapped in 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
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0802—Temperature of the exhaust gas treatment apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0811—NOx storage efficiency
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Claims (34)

1. Способ для двигателя, содержащий этап, на котором корректируют момент впрыска топлива или степень рециркуляции выхлопных газов (РВГ) в качестве реакции на заполнение пассивного поглотителя оксидов азота NOx (ППОА) с целью поддержания соотношения компонентов NOx выше по потоку от катализатора избирательного каталитического восстановления (ИКВ) в устройстве очистки выхлопных газов.
2. Способ по п. 1, в котором заполнение ППОА компонентами NOx происходит в условиях холодного старта двигателя, когда температура катализатора ИКВ ниже температуры активации катализатора ИКВ.
3. Способ по п. 2, в котором заполнение ППОА определяют по рабочим условиям двигателя, в число которых входит один или несколько из следующих параметров: температура основания ППОА, соотношение воздух/топливо при сгорании, обеднение в двигателе и момент зажигания.
4. Способ по п. 3, в котором осуществляют корректировку, когда температура катализатора ИКВ выше указанной температуры активации, а температура основания ППОА выше пороговой температуры, при этом температуру основания ППОА оценивают датчиком температуры, соединенным с ППОА.
5. Способ по п. 4, в котором поддержание соотношения компонентов NOx выше по потоку от катализатора ИКВ содержит поддержание, по существу, на выбранном уровне отношения первого компонента NOx ко второму компоненту NOx.
6. Способ по п. 5, в котором первым компонентом NOx является NO, вторым компонентом NOx является NO2, а выбранным уровнем отношения NO:NO2 является 1:1.
7. Способ по п. 6, в котором ППОА расположен выше по потоку от катализатора ИКВ, соотношение компонентов NOx оценивают на основании выходных сигналов датчика содержания NOx, расположенного до ППОА выше по потоку от поглотителя ППОА, и датчика NOx, расположенного после ППОА ниже по потоку от ППОА и выше по потоку от катализатора ИКВ и от инжектора, доставляющего восстановительный агент в выхлопной канал выше по потоку от катализатора ИКВ.
8. Способ по п. 7, в котором доставляемый восстановительный агент содержит мочевину или аммиак.
9. Способ по п. 8, в котором корректировка включает в себя следующие действия:
увеличивают степень РВГ и/или задерживают момент впрыска топлива в качестве реакции на превышение отношением первого компонента NOx ко второму компоненту NOx выбранного значения указанного отношения; и
уменьшают степень РВГ и/или опережают момент впрыска топлива в качестве реакции на превышение отношением второго компонента NOx к первому компоненту NOx выбранного значения указанного отношения.
10. Способ по п. 9, в котором при корректировке дополнительно учитывают чувствительность регистрации NOx датчиками содержания NOx, расположенными до ППОА и после ППОА, и допустимое отклонение отношения.
11. Способ для двигателя, содержащий этапы, на которых
уменьшают степень РВГ и/или опережают момент впрыска топлива при первом условии, только когда температура основания пассивного поглотителя оксидов азота NOx (ППОА) выхлопа больше, чем пороговая температура, а концентрация NOx, оцененная у датчика после ППОА, больше, чем пороговая концентрация, определяемая на основании концентрации NOx, оцененной у датчика до ППОА;
увеличивают степень РВГ и/или задерживают момент впрыска топлива при втором условии, только когда температура основания ППОА выхлопа больше пороговой температуры, а концентрация NOx у датчика после ППОА меньше, чем указанная пороговая концентрация; причем
при обоих условиях соотношение NOx выше по потоку от катализатора ИКВ и ниже по потоку от ППОА поддерживают на выбранном уровне.
12. Способ по п. 11, в котором сохраняют NOx в ППОА, когда температура основания ППОА ниже, чем пороговая температура, и высвобождают NOx, когда температура основания выше, чем пороговая температура.
13. Способ по п. 12, в котором соотношение NOx выше по потоку от катализатора ИКВ и ниже по потоку от ППОА поддерживают на выбранном уровне, которым может быть в числе прочих соотношение 1:1.
14. Способ по п. 13, в котором выбранное соотношение NOx представляет собой отношение NO к NO2.
15. Способ по п. 14, в котором при первом условии степень РВГ дополнительно уменьшают и/или момент впрыска топлива устанавливают с дополнительным опережением на основании более высоких оценок заполнения ППОА, а при втором условии степень РВГ дополнительно увеличивают и/или момент впрыска топлива устанавливают с дополнительной задержкой на основании более низких оценок заполнения ППОА.
16. Способ по п. 15, в котором как при первом условии, так и при втором условии, оценки заполнения поглотителя ППОА выполняют на основании рабочих условий, в число которых входит одно или несколько следующих условий: температура основания ППОА, показание расположенного до ППОА датчика содержания NOx, отношение воздух/топливо при сгорании, обеднение в двигателе и момент зажигания.
17. Система двигателя, содержащая
двигатель, содержащий топливный инжектор;
выхлопной канал;
ППОА, соединенный с указанным выхлопным каналом;
датчик температуры, соединенный с ППОА для оценки температуры основания ППОА;
катализатор ИКВ, присоединенный к выхлопному каналу выше по потоку от поглотителя ППОА;
инжектор восстановителя, соединенный с баком мочевины и выполненный с возможностью подачи мочевины в выхлопной канал выше по потоку от катализатора ИКВ;
первый датчик содержания NOx, установленный до ППОА выше по потоку от поглотителя ППОА;
второй датчик содержания NOx, установленный после ППОА ниже по потоку от ППОА и выше по потоку от катализатора ИКВ и от инжектора;
канал РВГ, выполненный с возможностью рециркуляции выхлопных газов из выхлопа двигателя во впуск двигателя; и
контроллер с машиночитаемыми командами, сохраненными в энергонезависимой памяти с целью, при условиях, в которых ППОА высвобождает поглощенные NOx, корректировки скорости потока через канал РВГ на основании заполнения ППОА для поддержания на выбранном уровне отношения компонентов NOx, измеряемых или оцениваемых выше по потоку от ППОА, к компонентам NOx, измеряемым или оцениваемым ниже по потоку от ППОА.
18. Система по п. 17, в которой контроллер содержит дополнительные команды для дополнительной корректировки момента впрыска топлива на основании заполнения ППОА с целью поддержания на выбранном уровне отношения компонентов NOx, оцениваемых выше по потоку от ППОА, к компонентам NOx, оцениваемым ниже по потоку от ППОА.
19. Система по п. 18, в которой заполнение ППОА определяют на основании показаний расположенного до ППОА датчика содержания NOx.
RU2015138472A 2014-09-23 2015-09-10 Способ и система снижения выброса оксидов азота при работе двигателя (варианты) RU2668593C2 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/493,846 2014-09-23
US14/493,846 US9903291B2 (en) 2014-09-23 2014-09-23 Method of controlling NOx by PNA

Publications (3)

Publication Number Publication Date
RU2015138472A true RU2015138472A (ru) 2017-03-15
RU2015138472A3 RU2015138472A3 (ru) 2018-08-02
RU2668593C2 RU2668593C2 (ru) 2018-10-02

Family

ID=55444909

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2015138472A RU2668593C2 (ru) 2014-09-23 2015-09-10 Способ и система снижения выброса оксидов азота при работе двигателя (варианты)

Country Status (4)

Country Link
US (1) US9903291B2 (ru)
CN (1) CN105443202B (ru)
DE (1) DE102015115104A1 (ru)
RU (1) RU2668593C2 (ru)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9512761B2 (en) * 2014-02-28 2016-12-06 Cummins Inc. Systems and methods for NOx reduction and aftertreatment control using passive NOx adsorption
SE539130C2 (sv) * 2015-08-27 2017-04-11 Scania Cv Ab Förfarande och avgasbehandlingssystem för behandling av en avgasström
GB2551946A (en) * 2016-01-22 2018-01-10 Gm Global Tech Operations Method of controlling the operation of an after-treatment system of a motor vehicle
KR101795394B1 (ko) * 2016-05-25 2017-12-01 현대자동차 주식회사 배기 시스템 및 우레아 공급량 제어 방법
DE102016219561B4 (de) * 2016-10-07 2023-02-23 Vitesco Technologies GmbH Verfahren zur Steuerung eines Verbrennungsmotors in einem Kraftfahrzeug
DE102017130314A1 (de) 2016-12-19 2018-06-21 Johnson Matthey Public Limited Company Erhöhte NOx-Umwandlung durch Einführung von Ozon
EP3428415B1 (en) 2017-07-13 2022-02-23 FPT Industrial S.p.A. Pollutant abatement system of an internal combustion engine, internal combustion engine comprising the abatement system and method for the pollutant abatement
JP6627839B2 (ja) * 2017-10-05 2020-01-08 マツダ株式会社 エンジンの排気浄化制御装置
US10920645B2 (en) * 2018-08-02 2021-02-16 Ford Global Technologies, Llc Systems and methods for on-board monitoring of a passive NOx adsorption catalyst
US10480369B1 (en) 2018-09-26 2019-11-19 FEV North America Inc. Exhaust after-treatment system for diesel internal combustion engines
CN109281736A (zh) * 2018-09-28 2019-01-29 潍柴动力股份有限公司 被动氮氧化合物吸附pna系统、后处理系统及控制方法
CN110284954A (zh) * 2019-07-04 2019-09-27 中自环保科技股份有限公司 一种柴油机尾气处理系统及控制方法
CN111485983B (zh) * 2020-04-27 2021-08-31 一汽解放汽车有限公司 一种pna状态机控制方法、装置、后处理器及介质
KR20210150180A (ko) * 2020-06-03 2021-12-10 현대자동차주식회사 Scr용 우레아 분사 제어방법 및 시스템
EP4012163B1 (en) * 2020-12-09 2023-11-15 Cummins Inc. System and method for cold operation nox burden reduction
DE102021113523A1 (de) 2021-05-26 2022-12-01 Volkswagen Aktiengesellschaft Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors sowie Abgasnachbehandlungssystem
CN113356978B (zh) * 2021-07-27 2022-04-15 湖南大学 控制发动机冷起动时排气系统中排气温度的方法
CN114151217B (zh) * 2021-11-29 2023-12-22 一汽解放汽车有限公司 车辆dpf保护方法和保护系统
CN115518675B (zh) * 2022-09-13 2023-11-10 东风商用车有限公司 具有低温NOx吸附功能的SCR催化剂及其应用

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182443B1 (en) 1999-02-09 2001-02-06 Ford Global Technologies, Inc. Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent
US7134273B2 (en) * 2002-09-04 2006-11-14 Ford Global Technologies, Llc Exhaust emission control and diagnostics
US6779337B2 (en) * 2002-09-20 2004-08-24 Ford Global Technologies, Llc Hydrogen fueled spark ignition engine
US6846464B2 (en) 2002-11-20 2005-01-25 Ford Global Technologies, Llc Bimodal catalyst-urea SCR system for enhanced NOx conversion and durability
JP2007218140A (ja) * 2006-02-15 2007-08-30 Toyota Industries Corp 排気浄化装置及び排気浄化方法
US7726118B2 (en) 2006-09-18 2010-06-01 Ford Global Technologies, Llc Engine-off ammonia vapor management system and method
JP5363345B2 (ja) 2007-02-21 2013-12-11 ボルボ ラストバグナー アーベー 排気後処理システムを制御するための制御方法と排気後処理システム
US8122712B2 (en) * 2008-01-03 2012-02-28 GM Global Technology Operations LLC Exhaust system with improved NOX emission control
GB0812544D0 (en) * 2008-07-09 2008-08-13 Johnson Matthey Plc Exhaust system for a lean burn IC engine
WO2011061820A1 (ja) * 2009-11-18 2011-05-26 トヨタ自動車株式会社 内燃機関の排気浄化システム
US8635861B2 (en) 2009-12-23 2014-01-28 Caterpillar Inc. Exhaust aftertreatment system
EP2410144B1 (en) 2010-07-19 2013-03-27 Delphi Technologies Holding S.à.r.l. Method of Controlling NOx Emissions in an Internal Combustion Engine
US8745969B2 (en) 2010-09-08 2014-06-10 GM Global Technology Operations LLC Methods for engine exhaust NOx control using no oxidation in the engine
WO2012118861A1 (en) 2011-02-28 2012-09-07 Cummins Intellectual Property, Inc. Engine exhaust aftertreatment system
EP2541011A1 (en) * 2011-06-30 2013-01-02 Ford Global Technologies, LLC A method for minimizing ammonia slip from SCR catalysts
US9010093B2 (en) * 2011-09-06 2015-04-21 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus for an internal combustion engine
JP2013174149A (ja) * 2012-02-24 2013-09-05 Nissan Motor Co Ltd 内燃機関の制御装置
US9162183B2 (en) 2012-03-06 2015-10-20 Cummins Inc. System and method to manage SCR catalyst NO2/NOX ratio
US8920756B2 (en) * 2012-05-07 2014-12-30 GM Global Technology Operations LLC Silver promoted close-coupled NOx absorber
US8420036B1 (en) 2012-07-02 2013-04-16 Southwest Research Institute Control of NO/NO2 ratio to improve SCR efficiency for treating engine exhaust using bypass oxidation catalyst
US8562924B1 (en) 2012-07-02 2013-10-22 Southwest Research Institute Control of NO/NOx ratio to improve SCR efficiency for treating engine exhaust
US9512761B2 (en) * 2014-02-28 2016-12-06 Cummins Inc. Systems and methods for NOx reduction and aftertreatment control using passive NOx adsorption
KR101655211B1 (ko) * 2015-03-30 2016-09-07 현대자동차 주식회사 린 녹스 트랩과 선택적 환원 촉매를 구비한 배기 가스 정화 장치 및 이의 제어 방법

Also Published As

Publication number Publication date
CN105443202B (zh) 2019-10-08
CN105443202A (zh) 2016-03-30
US9903291B2 (en) 2018-02-27
RU2015138472A3 (ru) 2018-08-02
DE102015115104A1 (de) 2016-03-24
RU2668593C2 (ru) 2018-10-02
US20160084185A1 (en) 2016-03-24

Similar Documents

Publication Publication Date Title
RU2015138472A (ru) Способ и система снижения выброса оксидов азота при работе двигателя (варианты)
US10100695B2 (en) Exhaust fluid dosing control system and method
RU140878U1 (ru) Система
US8176729B2 (en) Perturbation control strategy for low-temperature urea SCR NOx reduction
JP2016530423A5 (ru)
US20110005209A1 (en) Ammonia storage set-point control for selective catalytic reduction applications
RU2014127720A (ru) Способ для двигателя с каталитическим нейтрализатором с избирательным каталитическим восстановлением и способ для дизельного двигателя с каталитическим нейтрализатором с избирательным каталитическим восстановлением (варианты)
US8621847B2 (en) Engine off NH3 based selective catalytic reduction NOX adsorber
US10415490B2 (en) Control apparatus for internal combustion engine
US20100223908A1 (en) AMMONIA (NH3) STORAGE CONTROL SYSTEM AND METHOD BASED ON A NITROGEN OXIDE (NOx) SENSOR
US10247076B2 (en) Exhaust treatment system including ammonia storage control system
RU2013114803A (ru) Способы работы двигателя
US20100269489A1 (en) Oxidation catalyst outlet temperature correction systems and methods
CN106014556A (zh) 内燃机的排气净化装置
EP2873823A1 (en) Exhaust gas purification system for an internal combustion engine
US8789358B2 (en) Selective catalytic reduction catalyst ammonia storage control systems and methods
CN106437954A (zh) 内燃机的排气净化装置
JP2016098692A (ja) 内燃機関の排気浄化装置
RU2017138920A (ru) Устройство управления выхлопными газами для двигателя внутреннего сгорания и способ управления для устройства управления выхлопными газами
JP2014111918A (ja) 内燃機関の制御装置
US10704439B2 (en) Exhaust gas purification apparatus for an internal combustion engine
US9719393B2 (en) Exhaust system for dual fuel engines
US9567889B2 (en) Exhaust purification system for internal combustion engine
JP5880592B2 (ja) 排気浄化装置の異常検出装置
US10184411B2 (en) Exhaust purification system for internal combustion engine

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20200911