WO2005016480A3 - Removing nitrogen oxides during a lean-burn engine cold start - Google Patents

Removing nitrogen oxides during a lean-burn engine cold start Download PDF

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Publication number
WO2005016480A3
WO2005016480A3 PCT/US2004/020404 US2004020404W WO2005016480A3 WO 2005016480 A3 WO2005016480 A3 WO 2005016480A3 US 2004020404 W US2004020404 W US 2004020404W WO 2005016480 A3 WO2005016480 A3 WO 2005016480A3
Authority
WO
WIPO (PCT)
Prior art keywords
lnt
coupled
close
nox
main
Prior art date
Application number
PCT/US2004/020404
Other languages
French (fr)
Other versions
WO2005016480A2 (en
Inventor
Wei Li
David R Monroe
Original Assignee
Gen Motors Corp
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 Gen Motors Corp filed Critical Gen Motors Corp
Priority to DE112004001449.2T priority Critical patent/DE112004001449T5/en
Publication of WO2005016480A2 publication Critical patent/WO2005016480A2/en
Publication of WO2005016480A3 publication Critical patent/WO2005016480A3/en

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
    • 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
    • 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
    • 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
    • F01N13/009—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
    • F01N13/0093—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 of the same type
    • 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
    • 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
    • F01N3/10—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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

An apparatus and method for removing NOx from an exhaust stream of a lean-­burn engine during an engine cold start is provided. The apparatus includes a close-­coupled LNT coupled to a main LNT by a hollow conduit. NOx from the cold exhaust is initially stored on the close-coupled LNT. As the engine exhaust warms up, the close-­coupled LNT reaches its operating temperature and reduces the stored NOx to N2. When the temperature of the close-coupled LNT reaches approximately 350 °C, NOx is released from the close-coupled LNT, is absorbed on the main LNT, and is converted to N2 during fuel-rich conditions. The close-coupled LNT can be regenerated after the engine is turned off by providing heat. The released NOx during the regeneration of the closed-coupled LNT is absorbed by the main LNT. The stored NOx on the main LNT can be reduced to N2 during the next vehicle operation.
PCT/US2004/020404 2003-08-07 2004-06-24 Removing nitrogen oxides during a lean-burn engine cold start WO2005016480A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112004001449.2T DE112004001449T5 (en) 2003-08-07 2004-06-24 Elimination of nitrogen oxides during a cold start of a lean-burn engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/636,676 US6938412B2 (en) 2003-08-07 2003-08-07 Removing nitrogen oxides during a lean-burn engine cold start
US10/636,676 2003-08-07

Publications (2)

Publication Number Publication Date
WO2005016480A2 WO2005016480A2 (en) 2005-02-24
WO2005016480A3 true WO2005016480A3 (en) 2005-08-11

Family

ID=34116456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/020404 WO2005016480A2 (en) 2003-08-07 2004-06-24 Removing nitrogen oxides during a lean-burn engine cold start

Country Status (5)

Country Link
US (1) US6938412B2 (en)
KR (1) KR100801675B1 (en)
CN (1) CN100529339C (en)
DE (1) DE112004001449T5 (en)
WO (1) WO2005016480A2 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020007629A1 (en) * 2000-07-21 2002-01-24 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
GB0305415D0 (en) 2003-03-08 2003-04-16 Johnson Matthey Plc Exhaust system for lean burn IC engine including particulate filter and NOx absorbent
JP3912354B2 (en) * 2003-10-10 2007-05-09 トヨタ自動車株式会社 Exhaust purification device and exhaust purification method for internal combustion engine
US7673445B2 (en) * 2004-11-09 2010-03-09 Ford Global Technologies, Llc Mechanical apparatus having a catalytic NOx storage and conversion device
EP1831509B1 (en) * 2004-12-23 2010-04-21 Umicore AG & Co. KG Method for monitoring the nitrogen oxide storage capacity of a nitrogen oxide trapping catalyst used as a start-up catalytic converter
US20060168949A1 (en) * 2005-02-02 2006-08-03 Lifeng Xu Alumina-based lean NOx trap system and method of use in dual-mode HCCI engines
US20060168948A1 (en) * 2005-02-02 2006-08-03 Lifeng Xu Alumina-based lean NOx trap system and method of use
US7644578B2 (en) * 2005-11-07 2010-01-12 Delphi Technologies, Inc. Vehicle exhaust aftertreatment system
US20080072575A1 (en) * 2006-09-21 2008-03-27 Eaton Corporation Catalyst to improve low temperature deNOx activity in a reformer-LNT exhaust aftertreatment system
JP4420048B2 (en) * 2007-03-20 2010-02-24 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
US7950226B2 (en) * 2007-05-14 2011-05-31 Eaton Corporation LNT-SCR system optimized for thermal gradient
US20090199547A1 (en) * 2008-02-08 2009-08-13 Gm Global Technology Operations, Inc. Method and apparatus for exhaust aftertreatment in a spark-ignition direct-injection internal combustion engine
KR101013964B1 (en) * 2008-03-31 2011-02-14 현대자동차주식회사 Regeneration system for emission reduce line of diesel vehicle and method thereof
US7885756B2 (en) * 2008-08-28 2011-02-08 Gm Global Technologies Operations, Inc. Multi-pulse spark ignition direct injection torque based system
FR2959277A3 (en) * 2010-04-27 2011-10-28 Renault Sa Method for controlling e.g. oil engine of vehicle, involves allowing internal combustion heat engine to take two operating modes, where emission rate of nitrogen oxides is greater than and lower than predetermined thresholds, respectively
US8661797B2 (en) * 2010-11-15 2014-03-04 GM Global Technology Operations LLC NOx adsorber regeneration system and method
US8857154B2 (en) * 2012-01-23 2014-10-14 Southwest Research Institute Exhaust aftertreatment for NOx-containing exhaust from an internal combustion engine
WO2013136463A1 (en) * 2012-03-14 2013-09-19 トヨタ自動車株式会社 Control device for internal combustion engine
US9003792B2 (en) * 2012-04-05 2015-04-14 GM Global Technology Operations LLC Exhaust aftertreatment and exhaust gas recirculation systems
US9574971B2 (en) * 2014-06-23 2017-02-21 GM Global Technology Operations LLC Monitoring cold start emission reduction strategy
DE102015206838A1 (en) 2015-04-16 2016-10-20 Ford Global Technologies, Llc Method for operating an exhaust aftertreatment device of a motor vehicle
DE102015219113A1 (en) * 2015-10-02 2017-04-06 Volkswagen Ag Method and device for exhaust aftertreatment of an internal combustion engine
DE102016222012B4 (en) 2015-12-18 2022-09-29 Ford Global Technologies, Llc Method for controlling a NOx storage catalyst
US10378404B2 (en) * 2016-04-27 2019-08-13 Ford Global Technologies, Llc Methods and systems for an engine after-treatment system
US20180058286A1 (en) * 2016-08-31 2018-03-01 GM Global Technology Operations LLC METHOD AND APPARATUS TO MINIMIZE DEACTIVATION OF A LOW TEMPERATURE NOx ADSORBER IN AN EXHAUST AFTERTREATMENT SYSTEM
BR112019008207A2 (en) * 2016-10-24 2019-07-09 Basf Corp exhaust gas treatment systems, method for treating an exhaust stream and catalytic article
JP6551426B2 (en) * 2017-01-13 2019-07-31 トヨタ自動車株式会社 Exhaust purification system for internal combustion engine
CN107261842B (en) * 2017-06-30 2020-04-21 浙江大学 Device for eliminating yellow smoke emitted from chimney at initial starting stage of combustion engine
DE102018218077A1 (en) 2018-10-23 2020-04-23 Ford Global Technologies, Llc Exhaust aftertreatment device with segmented lean NOx trap
DE102018222324A1 (en) 2018-12-19 2020-06-25 Ford Global Technologies, Llc Exhaust aftertreatment device with lean NOx traps upstream and downstream of a turbocharger
CN111346657B (en) * 2018-12-20 2021-05-14 中国石油化工股份有限公司 Regular structure catalyst, preparation method and application thereof, and treatment method of incomplete regenerated flue gas
DE102019104511B4 (en) * 2019-02-22 2021-09-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for operating an exhaust gas purification device and an exhaust gas purification device
WO2021119279A1 (en) * 2019-12-13 2021-06-17 Basf Corporation Lean nox trap plus low temperature nox adsorber for low temperature nox trapping
EP4012163B1 (en) 2020-12-09 2023-11-15 Cummins Inc. System and method for cold operation nox burden reduction
CN114645794A (en) * 2021-04-26 2022-06-21 长城汽车股份有限公司 Exhaust aftertreatment control method and device and terminal equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539709B2 (en) * 2000-05-02 2003-04-01 Nissan Motor Co., Ltd. Exhaust gas purifying system of internal combustion engine
US6729125B2 (en) * 2000-09-19 2004-05-04 Nissan Motor Co., Ltd. Exhaust gas purifying system

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3375790B2 (en) * 1995-06-23 2003-02-10 日本碍子株式会社 Exhaust gas purification system and exhaust gas purification method
US5795553A (en) * 1996-07-03 1998-08-18 Low Emmissions Technologies Research And Development Partnership Nitrogen oxide adsorbing material
JPH10180041A (en) * 1996-12-20 1998-07-07 Ngk Insulators Ltd Catalyst for purification of exhaust gas and exhaust gas purifying system
JPH10238339A (en) * 1997-02-20 1998-09-08 Nissan Motor Co Ltd Exhaust emission control device
JP4034375B2 (en) * 1997-04-03 2008-01-16 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
WO1998051919A1 (en) * 1997-05-12 1998-11-19 Toyota Jidosha Kabushiki Kaisha Exhaust emission controlling apparatus of internal combustion engine
US5910293A (en) * 1997-07-22 1999-06-08 General Motors Corporation Exhaust management system control
JP3557928B2 (en) * 1998-12-22 2004-08-25 トヨタ自動車株式会社 Internal combustion engine having lean NOx catalyst
KR100319922B1 (en) * 1999-03-05 2002-01-09 이형도 catalyst for reduction of exhaust gas from diesel engine
US6293092B1 (en) * 1999-04-12 2001-09-25 General Motors Corporation NOx adsorber system regeneration fuel control
US6360529B1 (en) * 2000-03-17 2002-03-26 Ford Global Technologies, Inc. Method and apparatus for enabling lean engine operation upon engine start-up
US6557342B2 (en) * 2000-09-19 2003-05-06 Nissan Motor Co., Ltd. Exhaust gas purifying system
JP2002168117A (en) * 2000-09-19 2002-06-14 Nissan Motor Co Ltd Exhaust emission control system
US6422003B1 (en) * 2000-11-15 2002-07-23 General Motors Corporation NOX catalyst exhaust feedstream control system
JP3815256B2 (en) * 2001-05-29 2006-08-30 トヨタ自動車株式会社 NOx emission suppression operation method for intermittent operation internal combustion engine for vehicle
US20040226287A1 (en) * 2003-02-18 2004-11-18 Edgar Bradley L. Automated regeneration apparatus and method for a particulate filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539709B2 (en) * 2000-05-02 2003-04-01 Nissan Motor Co., Ltd. Exhaust gas purifying system of internal combustion engine
US6729125B2 (en) * 2000-09-19 2004-05-04 Nissan Motor Co., Ltd. Exhaust gas purifying system

Also Published As

Publication number Publication date
DE112004001449T5 (en) 2014-04-17
CN1829856A (en) 2006-09-06
KR20060076273A (en) 2006-07-04
US6938412B2 (en) 2005-09-06
US20050028518A1 (en) 2005-02-10
KR100801675B1 (en) 2008-02-11
CN100529339C (en) 2009-08-19
WO2005016480A2 (en) 2005-02-24

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