GB201206166D0 - Method of optimizing ammonia generation in an exhaust system of an internal combustion engine - Google Patents

Method of optimizing ammonia generation in an exhaust system of an internal combustion engine

Info

Publication number
GB201206166D0
GB201206166D0 GB201206166A GB201206166A GB201206166D0 GB 201206166 D0 GB201206166 D0 GB 201206166D0 GB 201206166 A GB201206166 A GB 201206166A GB 201206166 A GB201206166 A GB 201206166A GB 201206166 D0 GB201206166 D0 GB 201206166D0
Authority
GB
United Kingdom
Prior art keywords
exhaust system
ammonia production
combustion engine
internal combustion
catalytic reduction
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.)
Withdrawn
Application number
GB201206166A
Other versions
GB2500928A (en
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.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
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 GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to GB201206166A priority Critical patent/GB2500928A/en
Publication of GB201206166D0 publication Critical patent/GB201206166D0/en
Publication of GB2500928A publication Critical patent/GB2500928A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • 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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
    • 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
    • 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
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
    • 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
    • F01N3/0828—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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Toxicology (AREA)

Abstract

A method of optimising ammonia generation in an exhaust system (270, fig 1) of an internal combustion engine 100, the exhaust system comprising at least two after-treatment devices (280, fig 1), the after-treatment devices being at least a lean NOx trap 281 and a selective catalytic reduction system 282 or a selective catalytic reduction system comprising a particulate filter 283, the method comprising: predicting or measuring (20, fig 6) the present ammonia production from said lean NOx trap 281 during its regeneration phase under rich combustion conditions, comparing (21, fig 6) said present ammonia production with an optimal ammonia production needed by the selective catalytic reduction system 282, 283 and acting on at least one parameter, such as a target value air/fuel ratio and/or end criteria (23, fig 7) influencing said lean NOx trap regeneration phase, to reach the optimal ammonia production.
GB201206166A 2012-04-05 2012-04-05 Optimising ammonia generation in an exhaust system having a lean NOx trap and a selective catalytic reduction system Withdrawn GB2500928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201206166A GB2500928A (en) 2012-04-05 2012-04-05 Optimising ammonia generation in an exhaust system having a lean NOx trap and a selective catalytic reduction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201206166A GB2500928A (en) 2012-04-05 2012-04-05 Optimising ammonia generation in an exhaust system having a lean NOx trap and a selective catalytic reduction system

Publications (2)

Publication Number Publication Date
GB201206166D0 true GB201206166D0 (en) 2012-05-23
GB2500928A GB2500928A (en) 2013-10-09

Family

ID=46176963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201206166A Withdrawn GB2500928A (en) 2012-04-05 2012-04-05 Optimising ammonia generation in an exhaust system having a lean NOx trap and a selective catalytic reduction system

Country Status (1)

Country Link
GB (1) GB2500928A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2527443A (en) * 2015-09-15 2015-12-23 Gm Global Tech Operations Inc Method of operating an aftertreatment system of an internal combustion engine
CN106837480B (en) * 2016-12-26 2019-02-12 潍柴动力股份有限公司 A kind of urea injecting quantity control method and post-processing control system based on model
DE102017219561B4 (en) 2017-11-03 2024-03-21 Ford Global Technologies, Llc Method and device for exhaust gas aftertreatment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7472545B2 (en) * 2006-05-25 2009-01-06 Delphi Technologies, Inc. Engine exhaust emission control system providing on-board ammonia generation
US8196391B2 (en) * 2008-12-02 2012-06-12 Ford Global Technologies, Llc SCR emissions-control system
US8209955B2 (en) * 2010-04-07 2012-07-03 Ford Global Technologies, Llc Reduction of particulate, NOx, and ammonia emissions

Also Published As

Publication number Publication date
GB2500928A (en) 2013-10-09

Similar Documents

Publication Publication Date Title
EP2554816A3 (en) NH3 emissions management in a nox reduction system
WO2012024653A3 (en) System and methods for skip fire engine with a lean nox trap
WO2013004629A3 (en) Ammonia gas generator and method for producing ammonia in order to reduce nitrogen oxides in exhaust gases
EA201491619A1 (en) METHOD AND SYSTEM FOR REMOVING HARMFUL COMPOUNDS FROM THE EXHAUST GAS OF THE ENGINE
EP2570638A3 (en) Coordinated emissions control system of a diesel engine with selective catalytic reduction
WO2010053505A3 (en) Flex fuel internal combustion engine system
GB2521576A (en) Close-coupled SCR system
WO2009071994A3 (en) Abnormality detection system and abnormality detection method for internal combustion engine
IN2015DN03792A (en)
EA201490924A1 (en) FUEL OPTIMIZATION SYSTEM FOR MOBILE MEANS AND RELATED METHOD
MX2018003059A (en) System and method for improving the performance of combustion engines employing primary and secondary fuels.
WO2011041576A3 (en) Techniques for enhancing aftertreatment regeneration capability
MX2017013268A (en) Engine exhaust emissions treatment system.
BR112012021919A2 (en) exhaust gas aftertreatment system and method for a diesel engine vehicle, vehicle, and method for reducing total hydrocarbons
EP2685072A8 (en) Control device for internal combustion engine
WO2015150153A3 (en) Regeneration method for exhaust-gas aftertreatment systems
MX340768B (en) Device and method for controlling variable compression ratio internal combustion engine.
MX2016013655A (en) A method of reducing engine oil dilution.
RU2014148068A (en) DEVICE FOR PROTECTING THE CATALYST AND METHOD OF PROTECTING THE CATALYST FOR THE INTERNAL COMBUSTION ENGINE
GB201206145D0 (en) Method of increasing the efficiency of a lean nox trap device in a hybrid powertrain
AU2012344972A8 (en) Exhaust gas purification device for internal combustion engine
GB201206166D0 (en) Method of optimizing ammonia generation in an exhaust system of an internal combustion engine
GB201206162D0 (en) Method of operating a lean nox trap in an internal combustion engine
MY182863A (en) Emission control system and emission control method for internal combustion engine
GB201210017D0 (en) The easy fence panel clip

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)