CN1806099A - NOx吸收剂再生气体的处理 - Google Patents

NOx吸收剂再生气体的处理 Download PDF

Info

Publication number
CN1806099A
CN1806099A CNA2004800164985A CN200480016498A CN1806099A CN 1806099 A CN1806099 A CN 1806099A CN A2004800164985 A CNA2004800164985 A CN A2004800164985A CN 200480016498 A CN200480016498 A CN 200480016498A CN 1806099 A CN1806099 A CN 1806099A
Authority
CN
China
Prior art keywords
absorbing agent
motor
reagent
gas
regeneration
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.)
Pending
Application number
CNA2004800164985A
Other languages
English (en)
Inventor
E·T·R·阿兰松
A·K·安德里松
M·拉夫纽斯
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of CN1806099A publication Critical patent/CN1806099A/zh
Pending legal-status Critical Current

Links

Images

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
    • 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
    • F01N13/0097—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 the purifying devices are arranged in a single housing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • 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
    • 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
    • F01N13/011—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 purifying devices arranged in parallel
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0231—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 using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0233—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 using means for regenerating the filters, e.g. by burning trapped particles periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
    • 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
    • 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
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with 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
    • 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
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0878—Bypassing 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
    • F01N3/10—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
    • F01N3/2093—Periodically blowing a gas through the converter, e.g. in a direction opposite to exhaust gas flow or by reversing exhaust gas flow direction
    • 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
    • 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
    • F02M26/16—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 with EGR valves located at or near the connection to the exhaust system
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • 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
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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
    • F01N2610/04—Adding substances to exhaust gases the substance being hydrogen
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails

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)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

一种处理稀薄燃烧的往复式发动机的排出气体的方法，包括，当该排出气体是稀薄气体时，通过至少一种NOx吸收剂(30A；30B)来吸收NOx，使所述至少一种NOx吸收剂与可用于将NOx转化成N2的试剂间歇式地接触，从而使所述至少一种NOx吸收剂再生，并将所述间歇式接触步骤的流出物供给至发动机入口(14)。

Description

NOX吸收剂再生气体的处理
本发明涉及发动机排出气体中的NOX的处理，更具体地涉及稀薄燃烧的往复式发动机的排气中的NOX吸收剂再生气体的处理。
已经提出通过在碱性氧化物材料中进行吸收，然后再生该材料，同时利用作为还原剂或NOX专用反应剂的试剂将NOX转化成N2，来除去这种NOX。这种工艺面临如何限制或避免将这种试剂排放到大气中的问题，这种试剂通常会过量使用，因此并未100％地发生反应。
在随后的描述和所附权利要求中，用语“吸收”用于表示“吸收”或“吸附”或者这两种过程的任意进行；可有效地用于吸收NOX的金属化合物称为“氧化物”，可以理解，该用语包括其它氧化的化合物，例如氢氧化物和碳酸盐，它们可有效地用作NOX吸附剂并处于排出气体处理的条件下。
EP-B-0341832(通过引用而结合于本文中)介绍了一种用于燃烧柴油机排出气体中的颗粒物质的工艺方法，该方法包括利用催化剂将排出气体中的一氧化氮氧化成二氧化氮，从排出气体中过滤掉颗粒物质，并在高达400℃的温度下燃烧过滤出的颗粒物质。这种系统可从Johnson Matthey公司得到，其注册名为CRT。
与NOx吸收剂再生相关的一个问题在于，它会产生包含作为还原剂的未燃烧的烃(HC)燃料和NOX的浓排出气体的脉冲。未反应的HC和NOX从尾管中排放出，并且经常可被看见为喷出的烟。由于典型的NOX吸收剂再生方法包括进行若干秒或每隔若干分钟的再生，因此这种排放会导致不能达到将来的针对颗粒、HC和NOX的排放标准。
本发明人已经发展出一种用于处理这种NOX吸收剂再生气体的
根据第一方面，本发明提供了一种处理包含NOX的稀薄燃烧的往复式发动机的排出气体的方法，该方法包括，当排出气体是稀薄的时，通过至少一种NOX吸收剂来吸收所述NOX，使至少一种NOX吸收剂与可用于将NOX转化成N2的试剂间歇式地接触，从而使至少一种NOX吸收剂再生，并将所述间歇式接触步骤的流出物供给至发动机入口。
根据第二方面，提供了一种稀薄燃烧的往复式发动机，其排出包含NOX的排出气体并且具有处理系统，该处理系统包括至少一种NOX吸收剂，用于当排出气体为稀薄燃烧气体时吸收NOX，使至少一种NOX吸收剂与可用于将NOX转化成N2的试剂间歇式地接触从而使至少一种NOX吸收剂再生的装置，以及将所述接触的流出物供给至发动机入口的装置。
发动机优选为装配成可在正常操作模式或非经常的操作模式中用于排气再循环(EGR)的发动机。或者，EGR系统可加装至通常为不使用EGR的发动机中。
由于将流出物供给至发动机入口仅仅是用于对包含在其中的试剂进行处理，因此其流率在原理上与传统EGR的发动机内的燃烧要求不相关。为了允许流出物的完全再循环而无需过度的EGR，该系统优选包括至少两种平行地设置的NOX吸收剂以及用于使并非全部的这些吸收剂选择性地与试剂接触的装置。在再生时NOX吸收剂中的气体的流率优选受到进一步的限制，从而小于其余NOx吸收剂的流率，尤其低于现有EGR系统中的再循环速率。这种系统优选包括EGR泵，该泵可确定循环流出物的流率。
通过将试剂注入即将进入相接触的NOX吸收剂的气体中，来方便地供应试剂。通过在浓的或近似中性的即λ＝1的空气燃料比下间歇式地操作这些汽缸中的并非全部、优选为一个汽缸，并将所得排气供给至NOX吸收剂以进行再生，而将还原剂提供至多缸式发动机中。
该试剂可以是非选择性的还原剂，例如烃、CO或氢，它们可以这样的形式或作为化合物、例如发动机燃料而被喷出，并且可在通过NOX吸收剂进行的再生条件下或在预喷射步骤中来进行转化。在一种具有公共供油管路燃料喷射系统的发动机中，可设有至NOX吸收剂喷射器的分路。如果提供了汽缸的浓的/中性的操作，则显然使用了非选择性的还原剂。
或者试剂可以是NOX专用反应剂，例如氮氢化物例如氨或联氨，它们可作为先质、例如酰胺如尿素或氨基甲酸铵来方便地提供，并且可以借助于可有效地用于产生自由氢化物的催化剂来供给。
除了NOX除去步骤之外，发动机排气系统还可包括：在NOX吸收剂上游，将HC和CO催化氧化成蒸气和CO2和/或将NO催化氧化成NO2；以及优选在该催化氧化的下游，进行PM收集；和/或在NOX吸收剂的下游，进行：残余HC和CO的催化氧化；通过NOX吸收剂、或因颗粒尺寸太小通过上游过滤器、或因过滤器回流所释放的PM的收集。
当系统包括PM收集时，发动机可被设计并校准成可排放出包含NOX的初始排出气体，NOX在NO氧化成NO2之后，足够用于所述PM的全部含碳成分的燃烧。或者该发动机可被设计并校准成可至少临时性地排放出初始排出气体，其包含的NOX太少，因此在NO氧化成NO2之后无法完成所述燃烧。PM收集装置优选包括可有效地促进所述燃烧的催化剂，并且还可包括储氧材料。在每一燃烧过程中，当PM已积聚到所设计的水平时，温度以连续或间断的方式处于或高于NO2的“平衡温度”，或者另外还处于或高于氧的“平衡温度”。如果PM收集使用了过滤器，可以提供从中通过的间歇式的流动反向。发动机控制系统可提供比正常运转要稀薄得多的入口空气燃料比(例如a/f＝30)，但当温度升高以用于通过氧来燃烧PM时提供中等稀薄的入口空气燃料比(例如a/f＝16)。
NOX吸附剂一般选自：
(a)碱金属、碱土金属、稀土金属和过渡金属的氧化物，它们能够形成在吸收条件下具有适当稳定性的硝基盐，并且能够在再生条件下释放/反应氮氧化物。
(b)吸附性材料，例如沸石、碳和高比面积的氧化物。
不管采用哪种化合物，都优选设有一种或多种催化材料，例如贵金属，尤其是Pt+Rh，它们可有效地用于促进NOX与还原剂或NOX专用反应剂的反应。
吸附剂和催化剂适当地设在流经的单块衬底上。该衬底由陶瓷、缠绕的波纹状金属、泡沫状的或烧结的金属，或者有序地或随意地捆扎的线或扁平线构成。过滤器(如果已采用)可使用与吸附剂和催化剂所有的衬底相类似的衬底，但该衬底为可透过气体但对PM具有有限透过性的“过滤器等级”。
为了对相继来自使用中和再生下的NOX吸收剂的气流进行切换，和/或使PM过滤器中的流动方向反向，系统适当地包括四通阀。这种阀一般包括：外圆柱形或截头锥体形外壳，其形成有成角度地间隔开的开孔，每一个开孔可通往外部流接头；以及偏转器装置，其可用于：将两股进入流中的任一股引导至单个出口；或者将单股进入流引导至两个出口中的任一个；或者将两股进入流组合成单股流。
阀装置还包括通过密封件来操作的促动器装置。偏转器优选可在要求选择性气流的两个极限位置之间的弧形路径上操作。偏转器可以是“蝶式”的。阀外壳可形成有对应于蝶式构形的预期跨度的更大直径的壁区域，并且该壁区域在该跨度的极端处改变至较小的直径，而形成作为顺应于蝶式构形的外形的台阶，并且可有效地作为防止气体泄漏的密封件。该蝶式构形的跨度一般为外壳周长的10至20％。如果要求有过渡的非选择性气流，则由促动器装置来提供。
偏转器装置可由流体式密封地处于外壳内的管筒式接头来提供，并且可在横向于流体流的主流方向的轴线上旋转；并且沿着管筒式接头的两个或多个径向平面中的每一平面而形成有至少一个流体密封式的分隔部分；并且在各分隔处形成有至少一条通道，其在围绕管筒式接头的周边相互间成角度的位置处开启，所述位置对应于开孔。
可通过将片材组合在一起以限定其外形和内部通道，或者将实心材料成形并通过对其进行钻孔而形成通道，来提供管筒式接头(如果使用了的话)，因此钻孔之间的余下部分构成了分隔部分。各通道通常具有与其入口成角度的出口，例如垂直于带有一个入口接头和两个或三个出口接头的四通阀。在具有两个入口接头和两个出口接头的四通阀中，各通道可具有一个入口和两个出口。
通过附图来解释本发明，其中：
图1是显示了排出气体处理系统的流程图，其中阀用于提供两种NOX吸收剂之间的流体切换；
图2是显示了排出气体处理系统的流程图，其中阀的一种变型用于提供经由PM过滤器进行的流体反向；
图3A，3B和3C显示了用于图1和2中的阀的放大平面图；和
图4A和4B显示了用于图1和2中的阀的放大平面图。
参见图1，在柴油发动机10中，入口系统包括燃料供给12，空气供给14和排气再循环(EGR)供给16，排出气体经由歧管18而排出至包括反应器20和随后的PM过滤器24的排出气体后处理系统19，反应器20包含由带有活化涂层(washcoat)和Pt的陶瓷蜂窝构成的氧化催化剂22。过滤器24由过滤器等级的陶瓷蜂窝构成，该陶瓷蜂窝过滤器的通道在入口端处交替地开启和关闭，并且对应于入口开启通道，并在出口端交替地关闭。它可带有用于烟炱氧化的催化剂，例如Pt或La/Cs/V2O5。在反应器20的下游端设有分别通往NOX吸收剂30A和30B的出口26，各NOX吸收剂保持有陶瓷蜂窝单元，陶瓷蜂窝单元带有包含金属Pt+Rh和钡氧化物的氧化铝活化涂层。吸收剂30A，30B可设在如图所示的分开的罐中，或者为了节省空间可设在单个罐的流体密封式隔室内。每一种吸收剂30A，30B都配备了用于来自于发动机的公共供油管路系统(连接未示出)的烃、或者氨或其先质的喷射器32A，32B。
吸收剂30A，30B的各出口端连接在四通阀28的两个入口中的一个上，连接在EGR入口16(借助于泵，未示出)上的其出口34以及至大气的出口36与箭头所示的其中一个出口或另一出口对准。阀28可在三个位置28X，28Y和28Z(位置Y和Z参见插图)之间操作。
(注意：阀的两个分隔部分称为“LHS”即左手边，以及“RHS”即右手边，但这是为了方便理解附图，并非试图表示实际的构造)
在位置X中，两吸收剂和两出口都是开启的：因此没有受阻的中间点。
在位置Y中，离开吸收剂30A的气体以EGR泵的入口额定值下仅仅流至34处。同时气体从吸收剂30B经由36流出。
在位置Z中，操作是相类似的，将30B的流出物供给至EGR和30A，并且经由36流出。
在发动机的正常工作中，排出气体，包括蒸气(气态H2O)、二氮(N2)、氧(O2)、二氧化碳(CO2)、未燃烧的烃燃料(HC)、一氧化碳(CO)、氮氧化物(NOX)和颗粒物质(PM)，例如在300℃下与催化剂22接触，从而将NO氧化成NO2，并且一部分HC和CO氧化成蒸气和CO2。排出气体然后进入过滤器24，在这里，大多数PM被收集，并且通过与催化剂24中所形成的NO2并可能与O2发生反应而燃烧。无PM的气体然后在以下三种模式之一中接受处理：28X：吸收剂30A和30B各自从总气体流量的大约一半中吸收NOX；吸收剂出口气体主要地排至大气或在36处接受进一步处理，部分地在EGR泵(未示出)的额定流率下排至34处的EGR；28Y：吸收剂30A接受总气体流量的对应于EGR泵额定值的一部分，以及在32A处注入的HC或氨。吸收剂30A进行再生，并且其流出物在34处供给至EGR；吸收剂30B吸收来自于总气体流量的大部分的NOX，并且其流出物排至大气，或者在36处接受进一步的处理；28Z：吸收剂30B和30A交换在28Y处执行的功能。当将不进行再生的吸收剂基本上充满了NOX，但具有足够的NOX吸收能力以处理再次过程中总气体的大部分的能力时，发动机控制系统(未示出)从28X改变至28Y或与之相反。
参见图2，项10-19与图1相同，并且示意性地示出。反应器20现在仅含有催化剂22。PM过滤器25处于分开的容器21中。在提供通过过滤器的流动方向的反向方面，存在不同。反应器20的出口通过单入口式反向阀23连接在过滤器容器21上，反向阀23可在位置23A和23B(见插图)中操作，以便使气体通过过滤器25而分别从RH流至LH，或者从LH流至RH。以任一方向离开过滤器25的气体经过阀23A或23B而到达分叉进入出口27中，各出口27通往NOX吸收剂30A或30B和下游的四通阀28。阀28的操作与图1相同，不同之处在于，至大气的出口36被通往用于保持过滤器40的容器38的接头37取代，过滤器40的功能是收集从过滤器25释放出的PM。这种PM一般为灰，在这种情形下，过滤器40可以是可处理过滤器，例如纤维或纸制的过滤器。过滤器40的另一功能可以是用于收集过滤器25未收集的任何超细可燃PM。
现代柴油发动机的一项特征是，对于采用如EP-B-0341832中所述的通过氧化NO来催化性地产生的NO2的被动式过滤器再生而言，发动机排出的NOX和/或排出气体温度都太低。这一问题的一种解决方案是，通过提高排气系统的温度并由此而燃烧过滤器上的PM，并且在可接受的设计容许度的范围内保持过滤器上的回压，来主动地再生过滤器。这种主动再生技术在例如EP0758713(通过引用而结合于本文中)中进行了描述。
公开于图2中的系统针对CRT工艺实践应用的一项优点是，过滤器中的流动反向可用于清理在驱动循环中不易于在NO2中燃烧的PM。未燃烧的PM可在以适当间隔设置的用于清除的第二级可处理过滤器上收集。因此，这种设置尤其可用于改型市场，从而针对安装昂贵且耗费燃料的主动式再生装置提供了一种实用和经济的备选方案。
参见图3A，3B和3C和图4A和4B，各外接头如图1和2中的标号所示。这些图中的平面图涉及一种大致圆柱形的阀外壳50，其在内部形成有更大直径的圆周区域52，从而限定了矩形蝶式偏转器54的跨度范围，该偏转器54具有借助于连接在促动器(未示出)上的密封件而延伸至阀外壳之外的枢轴式操作轴56。该跨度范围的极限由设在不同直径的区域之间的台阶58限定，这些台阶限制了气体沿其预期路径泄漏出。

Claims (21)

1.一种处理包含NOX的稀薄燃烧的往复式发动机的排出气体的方法，所述方法包括，当所述排出气体是稀薄的时，通过至少一种NOX吸收剂(30)来吸收所述NOX，使所述至少一种NOX吸收剂与可用于将NOX转化成N2的试剂间歇式地接触，从而使所述至少一种NOX吸收剂再生，并将所述间歇式接触步骤的流出物供给至所述发动机入口(14)。
2.根据权利要求1所述的方法，其特征在于，所述方法包括同时地使所述稀薄的排出气体与至少两种平行地设置的NOX吸收剂(30A，30B)相接触，以及使并非全部的所述NOX吸收剂同时地与所述试剂间歇式地接触。
3.根据权利要求2所述的方法，其特征在于，在再生的所述或各所述NOX吸收剂中的气体流量小于在未再生的所述或各NOX吸收剂中的气体流量，并且所再生的所述或各所述NOX吸收剂的基本上全部的流出物供给至所述发动机入口。
4.根据权利要求1、2或3所述的方法，其特征在于，所述试剂是非选择性的还原剂，例如烃(HC)、CO或氢。
5.根据权利要求4所述的方法，其特征在于，所述试剂是发动机燃料。
6.根据权利要求1、2或3所述的方法，其特征在于，所述试剂是氮氢化物。
7.根据上述权利要求中任一项所述的方法，其特征在于，所述方法包括，在所述或各所述NOX吸收剂的上游，将HC和CO催化氧化(22)成蒸气(气态H2O)及CO2和/或将NO催化氧化(22)成NO2。
8.根据权利要求7所述的方法，其特征在于，所述方法包括在NO氧化和NOX吸附作用之间的颗粒物质(PM)收集(24)。
9.一种稀薄燃烧的往复式发动机(10)，其排出包含NOX的排出气体并且具有处理系统(19)，所述处理系统包括至少一种NOX吸收剂(30)，用于当所述排出气体为稀薄气体时吸收NOX，使所述至少一种NOX吸收剂与可用于将NOX转化成N2的试剂间歇式地接触、使至少一种NOX吸收剂再生的装置(32)，以及将所述接触的流出物供给至所述发动机入口(14)的装置。
10.根据权利要求9所述的发动机，其特征在于，所述发动机包括可在正常操作模式或非经常的操作模式中使用的排气再循环(EGR)装置(28，34，16)，所述EGR装置选择性地包括泵。
11.根据权利要求9或10所述的发动机，其特征在于，所述发动机包括至少两种平行地设置的NOX吸收剂(30A，30B)，以及使并非全部的所述至少两种NOX吸收剂选择性地与所述试剂接触的装置。
12.根据权利要求11所述的发动机，其特征在于，所述发动机包括在至少一种NOX吸收剂的再生过程中，相对于至少另一种非再生的NOX吸收剂而减少至所述至少一种NOX吸收剂的气体流量的装置，以及将再生的所述或各所述NOX吸收剂的基本上全部的流出物供给至所述发动机入口(14)的装置。
13.根据权利要求9，10，11或12所述的发动机，其特征在于，所述或各所述吸收剂(30)与喷射器装置(32A，32B)相关联，所述喷射器装置(32A，32B)用于在再生过程中将所述试剂在所述或各所述吸收剂(30A，30B)的入口处引入气体中。
14.根据权利要求9至13中任一项所述的发动机，其特征在于，所述发动机包括试剂的供应装置。
15.根据权利要求14所述的发动机，其特征在于，所述试剂是非选择性的还原剂，例如烃(HC)、CO或氢。
16.根据权利要求15所述的发动机，其特征在于，所述试剂是发动机燃料。
17.根据权利要求13所述的发动机，其特征在于，所述发动机包括公共供油管路燃料喷射(12)系统，其带有至所述或各所述吸收剂喷射器(30A，30B)的分路。
18.根据权利要求14所述的发动机，其特征在于，所述试剂是氮氢化物。
19.根据权利要求9至18中任一项所述的发动机，其特征在于，所述发动机包括这样的装置，所述装置在使用中用于控制至少一种NOX吸收剂(30)的间歇式再生以及所述或各所述吸收剂再生的流出物至所述发动机入口(14)的供给，因而相对于缺乏用于将NOX吸收剂再生流出物供给至所述发动机入口的装置的类似发动机而言，减少了排放至大气中的所述再生试剂的量。
20.根据权利要求9至19中任一项所述的发动机，其特征在于，所述系统包括氧化催化剂(22)，其设在所述或各所述吸收剂(30)的上游，用于为将HC和CO氧化成蒸气和CO2和/或将NO氧化成NO2的氧化作用提供催化。
21.根据权利要求20所述的发动机，其特征在于，所述系统包括设在NO氧化催化剂(20)和所述或各所述吸收剂(30)之间的颗粒物质(PM)过滤器(24)。
CNA2004800164985A 2003-06-18 2004-06-18 NOx吸收剂再生气体的处理 Pending CN1806099A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0314245.2 2003-06-18
GBGB0314245.2A GB0314245D0 (en) 2003-06-18 2003-06-18 Engine exhaust gas treatment

Publications (1)

Publication Number Publication Date
CN1806099A true CN1806099A (zh) 2006-07-19

Family

ID=27636877

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2004800164985A Pending CN1806099A (zh) 2003-06-18 2004-06-18 NOx吸收剂再生气体的处理

Country Status (8)

Country Link
US (1) US20060213189A1 (zh)
EP (1) EP1633961A1 (zh)
JP (1) JP2006527814A (zh)
KR (1) KR20060038947A (zh)
CN (1) CN1806099A (zh)
GB (1) GB0314245D0 (zh)
MX (1) MXPA05013254A (zh)
WO (1) WO2004113693A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9140155B2 (en) * 2013-06-03 2015-09-22 Caterpillar Inc. Modular exhaust system
CN112221301B (zh) * 2020-09-30 2022-12-23 武汉钢铁有限公司 活性炭烟气净化系统及其方法
EP4080035A1 (en) 2021-04-21 2022-10-26 Volvo Truck Corporation Internal combustion engine system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699683A (en) * 1971-04-05 1972-10-24 Chemical Construction Corp Engine exhaust emission control system
US4902487A (en) 1988-05-13 1990-02-20 Johnson Matthey, Inc. Treatment of diesel exhaust gases
US5409784A (en) * 1993-07-09 1995-04-25 Massachusetts Institute Of Technology Plasmatron-fuel cell system for generating electricity
DE19628796C1 (de) * 1996-07-17 1997-10-23 Daimler Benz Ag Abgasreinigungsanlage mit Stickoxid-Adsorbern für eine Brennkraftmaschine
DE19747670C1 (de) * 1997-10-29 1998-12-10 Daimler Benz Ag Abgasreinigungsanlage für eine Brennkraftmaschine
DE19747671C1 (de) * 1997-10-29 1999-07-08 Daimler Chrysler Ag Verfahren zum Betrieb eines mehrzylindrigen Verbrennungsmotors
AU6111799A (en) * 1998-10-12 2000-05-01 Johnson Matthey Public Limited Company Process and apparatus for treating combustion exhaust gas
US6560958B1 (en) * 1998-10-29 2003-05-13 Massachusetts Institute Of Technology Emission abatement system
JP2003065095A (ja) * 2001-08-27 2003-03-05 Yanmar Co Ltd 内燃機関の運転制御方法

Also Published As

Publication number Publication date
JP2006527814A (ja) 2006-12-07
US20060213189A1 (en) 2006-09-28
KR20060038947A (ko) 2006-05-04
WO2004113693A1 (en) 2004-12-29
MXPA05013254A (es) 2006-03-09
EP1633961A1 (en) 2006-03-15
GB0314245D0 (en) 2003-07-23

Similar Documents

Publication Publication Date Title
US6820417B2 (en) Exhaust aftertreatment system and method for an internal combustion engine
US8276366B2 (en) Closely coupled exhaust aftertreatment system for an internal combustion engine having twin turbochargers
US20060251548A1 (en) Exhaust aftertreatment device
KR101448734B1 (ko) 질소 산화물 저감 촉매 및 이를 이용한 배기 장치
KR101986388B1 (ko) Egr 회로에서 암모니아 슬립 촉매를 가지는 배기 시스템
JP5141900B2 (ja) 排気浄化装置
CN1813120A (zh) 微粒捕集器的再生
JP2007291980A (ja) 排気浄化装置
CN102220895A (zh) 用于涡轮增压发动的紧密连接的排气后处理系统
EP0957243B1 (de) Stickoxidbehandlung bei einem Mager-Otto-Motor
JP4784761B2 (ja) 排気浄化装置
KR20110023158A (ko) 배기 시스템
KR101807053B1 (ko) 배기 가스 정화 장치 및 그 재생 방법
KR20120128938A (ko) 차량용 매연 필터 및 이를 포함하는 배기 장치
CN1806098A (zh) 包括过滤器的排气系统中的流动反向
KR101776730B1 (ko) 배출 가스 정화 장치
KR102563441B1 (ko) 배출 가스 정화 장치
KR101806180B1 (ko) 배기 가스 정화 장치
CN1806099A (zh) NOx吸收剂再生气体的处理
CN107035468B (zh) 催化颗粒过滤器
US9962653B2 (en) Catalyzed particulate filter
KR101091633B1 (ko) 질소 산화물 저감 촉매 및 이를 이용한 배기 장치
US20100154392A1 (en) Adjusting nitrogen oxide ratios in exhaust gas
KR100716369B1 (ko) 디젤매연촉매여과필터의 제조방법
KR100303978B1 (ko) 자동차의린번엔진용배기후처리시스템및그방법

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1094018

Country of ref document: HK

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1094018

Country of ref document: HK