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GB201206162D0 - Method of operating a lean nox trap in an internal combustion engine - Google Patents

Method of operating a lean nox trap in an internal combustion engine

Info

Publication number
GB201206162D0
GB201206162D0 GBGB1206162.8A GB201206162A GB201206162D0 GB 201206162 D0 GB201206162 D0 GB 201206162D0 GB 201206162 A GB201206162 A GB 201206162A GB 201206162 D0 GB201206162 D0 GB 201206162D0
Authority
GB
United Kingdom
Prior art keywords
nox trap
lean nox
operating
internal combustion
combustion engine
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Withdrawn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
GBGB1206162.8A
Other versions
GB2500925A (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 GB1206162.8A priority Critical patent/GB2500925A/en
Publication of GB201206162D0 publication Critical patent/GB201206162D0/en
Publication of GB2500925A publication Critical patent/GB2500925A/en
Withdrawn legal-status Critical Current

Links

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
    • F01N3/0807—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
    • 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
    • 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
    • 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
    • F02D41/028—Desulfurisation of NOx traps or adsorbent
    • 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
    • F02D41/0285—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 SOx trap or adsorbent
    • 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
    • F02D41/029—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 particulate filter
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • 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
    • F02D2200/0818—SOx storage amount, e.g. for SOx trap or NOx trap

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Disclosed is a method of operating a lean NOx trap in an exhaust line of an internal combustion engine, the exhaust line being equipped with a diesel particulate filter. The method comprises the steps of starting a DeSOx regeneration event comprising a plurality of rich and lean combustion phases and varying the duration of the DeSOx regeneration event by a time interval that is a function of a parameter indicative of the amount of of SOx storage of the lean NOx trap, K_critical, and of a parameter indicative of a potential desulphation efficiency of the lean NOx trap for a particular engine state or mission profile. An engine system, computer program for calculating the regeneration event duration and engine control unit using the program are also disclosed.
GB1206162.8A 2012-04-05 2012-04-05 Method of operating a lean NOx trap Withdrawn GB2500925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1206162.8A GB2500925A (en) 2012-04-05 2012-04-05 Method of operating a lean NOx trap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1206162.8A GB2500925A (en) 2012-04-05 2012-04-05 Method of operating a lean NOx trap

Publications (2)

Publication Number Publication Date
GB201206162D0 true GB201206162D0 (en) 2012-05-23
GB2500925A GB2500925A (en) 2013-10-09

Family

ID=46176959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1206162.8A Withdrawn GB2500925A (en) 2012-04-05 2012-04-05 Method of operating a lean NOx trap

Country Status (1)

Country Link
GB (1) GB2500925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114109569A (en) * 2020-09-01 2022-03-01 长城汽车股份有限公司 Exhaust gas purification apparatus and method for preventing non-restorability after sulfur poisoning of LNT region
CN116044546A (en) * 2023-01-09 2023-05-02 长城汽车股份有限公司 Nitrogen oxide catcher control method and device and vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065035B1 (en) * 2017-04-11 2019-04-26 Peugeot Citroen Automobiles Sa METHOD FOR CONTROLLING THERMAL ENGINE COMBUSTION MODES
GB2581493B (en) * 2019-02-19 2021-11-03 Jaguar Land Rover Ltd Control apparatus and method
CN113803182B (en) * 2020-06-17 2024-01-19 北京福田康明斯发动机有限公司 SCR system performance recovery method and device, storage medium and vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6497092B1 (en) * 1999-03-18 2002-12-24 Delphi Technologies, Inc. NOx absorber diagnostics and automotive exhaust control system utilizing the same
DE10019245A1 (en) * 1999-05-19 2000-11-30 Ford Global Tech Inc Controlling rich regeneration of NOx storage unit of lean burn engine, determines oxygen storage during first regeneration, regenerates at rate related to NOx stored, and desulfurizes when regeneration interval is slight
DE10307457B4 (en) * 2003-02-21 2006-10-26 Audi Ag Method for operating a nitrogen oxide storage catalytic converter of an internal combustion engine
US6826902B2 (en) * 2003-03-18 2004-12-07 Ford Global Technologies, Llc Method and apparatus for estimating oxygen storage capacity and stored NOx in a lean NOx trap (LNT)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114109569A (en) * 2020-09-01 2022-03-01 长城汽车股份有限公司 Exhaust gas purification apparatus and method for preventing non-restorability after sulfur poisoning of LNT region
CN114109569B (en) * 2020-09-01 2023-01-31 长城汽车股份有限公司 Exhaust purification apparatus and method for preventing non-restorability after sulfur poisoning of LNT region
CN116044546A (en) * 2023-01-09 2023-05-02 长城汽车股份有限公司 Nitrogen oxide catcher control method and device and vehicle

Also Published As

Publication number Publication date
GB2500925A (en) 2013-10-09

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Legal Events

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