JPS62117620A - Method for removing nitrogen oxide contained in exhaust gas of gasoline engine - Google Patents

Method for removing nitrogen oxide contained in exhaust gas of gasoline engine

Info

Publication number
JPS62117620A
JPS62117620A JP25773485A JP25773485A JPS62117620A JP S62117620 A JPS62117620 A JP S62117620A JP 25773485 A JP25773485 A JP 25773485A JP 25773485 A JP25773485 A JP 25773485A JP S62117620 A JPS62117620 A JP S62117620A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
catalyst
exhaust gas
introduced
nox
method
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
JP25773485A
Inventor
Akira Inoue
Tomohisa Ohata
Koichi Saito
Original Assignee
Nippon Shokubai Kagaku Kogyo Co Ltd
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828Exhaust 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
    • F01N3/0842Nitrogen oxides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/009Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/011Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871Regulation of absorbents or adsorbents, e.g. purging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0878Bypassing absorbents or adsorbents
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00Combinations of different methods of purification
    • F01N2250/12Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/04Exhaust treating devices having provisions not otherwise provided for for regeneration or reactivation, e.g. of catalyst
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00Engines characterised by fuel-air mixture compression
    • F02B1/02Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Abstract

PURPOSE:To efficiently perform denitration by bringing NOx into contact with a catalyst under the presence of O2 to oxidize and absorb it and stopping the pass of exhaust gas at the point of time when the absorption efficiency of the catalyst is reduced and using a gaseous reducing agent to reduce NO2 of the catalyst. CONSTITUTION:Exhaust gas discharged from a manifold is introduced into an oxidizing catalyst to convert CO into CO2 and introduced into either catalyst of the parallel catalysts A, B and NOx is oxidized and absorbed to the catalyst under the presence of O2. Various metals such as Mn and Fe, oxide thereof and composite oxide are used as the catalyst. When exhaust gas is introduced into the catalyst layer of one hand for a specified time and absorption efficiency is reduced, the flow of exhaust gas is changeovered to the catalyst layer of the other hand and H2 is introduced into the catalyst layer wherein exhaust gas is not flowed from an H2 generator to remove NOx and the catalyst is regenerated.
JP25773485A 1985-11-19 1985-11-19 Method for removing nitrogen oxide contained in exhaust gas of gasoline engine Pending JPS62117620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25773485A JPS62117620A (en) 1985-11-19 1985-11-19 Method for removing nitrogen oxide contained in exhaust gas of gasoline engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25773485A JPS62117620A (en) 1985-11-19 1985-11-19 Method for removing nitrogen oxide contained in exhaust gas of gasoline engine

Publications (1)

Publication Number Publication Date
JPS62117620A true true JPS62117620A (en) 1987-05-29

Family

ID=17310352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25773485A Pending JPS62117620A (en) 1985-11-19 1985-11-19 Method for removing nitrogen oxide contained in exhaust gas of gasoline engine

Country Status (1)

Country Link
JP (1) JPS62117620A (en)

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560991A1 (en) * 1991-10-03 1993-09-22 Toyota Jidosha Kabushiki Kaisha Device for purifying exhaust of internal combustion engine
EP0582917A1 (en) * 1992-08-04 1994-02-16 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an engine
US5388403A (en) * 1993-03-12 1995-02-14 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5402641A (en) * 1992-07-24 1995-04-04 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus for an internal combustion engine
US5404719A (en) * 1992-10-13 1995-04-11 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5412945A (en) * 1991-12-27 1995-05-09 Kabushiki Kaisha Toyota Cho Kenkusho Exhaust purification device of an internal combustion engine
US5423181A (en) * 1992-09-02 1995-06-13 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device of an engine
US5433074A (en) * 1992-07-30 1995-07-18 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5437153A (en) * 1992-06-12 1995-08-01 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5448887A (en) * 1993-05-31 1995-09-12 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5450722A (en) * 1992-06-12 1995-09-19 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5461857A (en) * 1993-06-11 1995-10-31 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5471836A (en) * 1991-10-14 1995-12-05 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5473890A (en) * 1992-12-03 1995-12-12 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5483795A (en) * 1993-01-19 1996-01-16 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
EP0702134A2 (en) 1994-09-16 1996-03-20 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an engine
US5551231A (en) * 1993-11-25 1996-09-03 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5575983A (en) * 1993-09-24 1996-11-19 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gases and process for purifying exhaust gases
EP0922840A2 (en) 1997-12-09 1999-06-16 Hitachi, Ltd. Method of purifying exhaust gas of internal combustion engine and apparatus thereof
US5951956A (en) * 1992-03-23 1999-09-14 Kabushiki Kaisha Toyota Chuo Kenkyusho Catalyst for purifying exhaust gas and method for purifying exhaust gas
US5968462A (en) * 1994-02-04 1999-10-19 Toyota Jidosha Kabushiki Kaisha Process for purifying exhaust gases
US6010673A (en) * 1992-09-21 2000-01-04 Toyota Jidosha Kabushiki Kaisha Method for purifying exhaust gas
EP0994243A2 (en) * 1998-10-14 2000-04-19 Nissan Motor Co., Ltd. Exhaust gas purifying device
US6161378A (en) * 1996-06-10 2000-12-19 Hitachi, Ltd. Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine
US6308515B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
US6374597B1 (en) 2000-03-17 2002-04-23 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
US6477832B1 (en) 2000-03-17 2002-11-12 Ford Global Technologies, Inc. Method for improved performance of a vehicle having an internal combustion engine
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6487849B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency
US6499293B1 (en) 2000-03-17 2002-12-31 Ford Global Technologies, Inc. Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine
EP1053390A4 (en) * 1998-02-04 2003-05-21 Goal Line Environmental Tech Regeneration of catalyst/absorber
US6594989B1 (en) 2000-03-17 2003-07-22 Ford Global Technologies, Llc Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine
US6596247B1 (en) 1996-10-25 2003-07-22 Hitachi, Ltd. Method for purifying exhaust gas from internal combustion engines
US6708483B1 (en) 2000-03-17 2004-03-23 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine based upon predicted performance impact
US6810659B1 (en) 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6843051B1 (en) 2000-03-17 2005-01-18 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine to purge trap of stored NOx
US6863874B1 (en) 1998-10-12 2005-03-08 Johnson Matthey Public Limited Company Process and apparatus for treating combustion exhaust gas
US7861516B2 (en) 2003-06-18 2011-01-04 Johnson Matthey Public Limited Company Methods of controlling reductant addition
WO2015159698A1 (en) * 2014-04-18 2015-10-22 株式会社アツミテック Exhaust gas purification system, catalyst and exhaust gas purification method
EP3043038A1 (en) * 2015-01-12 2016-07-13 Inergy Automotive Systems Research (Société Anonyme) NOx reduction system

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560991A1 (en) * 1991-10-03 1993-09-22 Toyota Jidosha Kabushiki Kaisha Device for purifying exhaust of internal combustion engine
EP0560991B1 (en) * 1991-10-03 1997-07-30 Toyota Jidosha Kabushiki Kaisha Device for purifying exhaust of internal combustion engine
US5473887A (en) * 1991-10-03 1995-12-12 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5471836A (en) * 1991-10-14 1995-12-05 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5412945A (en) * 1991-12-27 1995-05-09 Kabushiki Kaisha Toyota Cho Kenkusho Exhaust purification device of an internal combustion engine
US5951956A (en) * 1992-03-23 1999-09-14 Kabushiki Kaisha Toyota Chuo Kenkyusho Catalyst for purifying exhaust gas and method for purifying exhaust gas
US5450722A (en) * 1992-06-12 1995-09-19 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5437153A (en) * 1992-06-12 1995-08-01 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5402641A (en) * 1992-07-24 1995-04-04 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus for an internal combustion engine
US5433074A (en) * 1992-07-30 1995-07-18 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
EP0582917A1 (en) * 1992-08-04 1994-02-16 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an engine
US5472673A (en) * 1992-08-04 1995-12-05 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5423181A (en) * 1992-09-02 1995-06-13 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device of an engine
US6010673A (en) * 1992-09-21 2000-01-04 Toyota Jidosha Kabushiki Kaisha Method for purifying exhaust gas
US5404719A (en) * 1992-10-13 1995-04-11 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5473890A (en) * 1992-12-03 1995-12-12 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5483795A (en) * 1993-01-19 1996-01-16 Toyota Jidosha Kabushiki Kaisha Exhaust purification device of internal combustion engine
US5388403A (en) * 1993-03-12 1995-02-14 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5448887A (en) * 1993-05-31 1995-09-12 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
US5461857A (en) * 1993-06-11 1995-10-31 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5575983A (en) * 1993-09-24 1996-11-19 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gases and process for purifying exhaust gases
US5551231A (en) * 1993-11-25 1996-09-03 Toyota Jidosha Kabushiki Kaisha Engine exhaust gas purification device
US5968462A (en) * 1994-02-04 1999-10-19 Toyota Jidosha Kabushiki Kaisha Process for purifying exhaust gases
EP0702134A2 (en) 1994-09-16 1996-03-20 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an engine
US6409973B1 (en) 1994-09-16 2002-06-25 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
EP0702134A3 (en) * 1994-09-16 1996-07-03 Toyota Motor Co Ltd An exhaust gas purification device for an engine
US6397582B1 (en) 1996-06-10 2002-06-04 Hitachi, Ltd. Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine
US6161378A (en) * 1996-06-10 2000-12-19 Hitachi, Ltd. Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine
US7093432B2 (en) 1996-06-10 2006-08-22 Hitachi, Ltd. Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine
US6596247B1 (en) 1996-10-25 2003-07-22 Hitachi, Ltd. Method for purifying exhaust gas from internal combustion engines
US6305161B1 (en) 1997-12-09 2001-10-23 Hitachi, Ltd. Method of purifying exhaust gas of internal combustion engine and apparatus thereof
EP0922840A2 (en) 1997-12-09 1999-06-16 Hitachi, Ltd. Method of purifying exhaust gas of internal combustion engine and apparatus thereof
EP1053390A4 (en) * 1998-02-04 2003-05-21 Goal Line Environmental Tech Regeneration of catalyst/absorber
US6863874B1 (en) 1998-10-12 2005-03-08 Johnson Matthey Public Limited Company Process and apparatus for treating combustion exhaust gas
EP0994243A2 (en) * 1998-10-14 2000-04-19 Nissan Motor Co., Ltd. Exhaust gas purifying device
EP0994243A3 (en) * 1998-10-14 2003-01-15 Nissan Motor Co., Ltd. Exhaust gas purifying device
US6843051B1 (en) 2000-03-17 2005-01-18 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine to purge trap of stored NOx
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
US6477832B1 (en) 2000-03-17 2002-11-12 Ford Global Technologies, Inc. Method for improved performance of a vehicle having an internal combustion engine
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6487849B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency
US6308515B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6499293B1 (en) 2000-03-17 2002-12-31 Ford Global Technologies, Inc. Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6374597B1 (en) 2000-03-17 2002-04-23 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6594989B1 (en) 2000-03-17 2003-07-22 Ford Global Technologies, Llc Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6708483B1 (en) 2000-03-17 2004-03-23 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine based upon predicted performance impact
US6810659B1 (en) 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6490856B2 (en) 2000-03-17 2002-12-10 Ford Global Technologies, Inc. Control for improved vehicle performance
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance
US7861516B2 (en) 2003-06-18 2011-01-04 Johnson Matthey Public Limited Company Methods of controlling reductant addition
WO2015159698A1 (en) * 2014-04-18 2015-10-22 株式会社アツミテック Exhaust gas purification system, catalyst and exhaust gas purification method
WO2016113260A1 (en) * 2015-01-12 2016-07-21 Plastic Omnium Advanced Innovation And Research Nox reduction system
EP3043038A1 (en) * 2015-01-12 2016-07-13 Inergy Automotive Systems Research (Société Anonyme) NOx reduction system

Similar Documents

Publication Publication Date Title
US5650127A (en) NOx removal process
US6718753B2 (en) Emission abatement system utilizing particulate traps
US3767764A (en) System for removing nitrogen oxide from automotive exhaust
US5451558A (en) Process for the reaction and absorption of gaseous air pollutants, apparatus therefor and method of making the same
US6546717B1 (en) Combatting air pollution
US6732507B1 (en) NOx aftertreatment system and method for internal combustion engines
Farrauto et al. Catalytic converters: state of the art and perspectives
US20040055285A1 (en) Process for regenerating a nitrogen oxides storage catalyst
US6038854A (en) Plasma regenerated particulate trap and NOx reduction system
US4912776A (en) Process for removal of NOx from fluid streams
US20020054844A1 (en) Exhaust gas treatment unit for the selective catalytic reduction of nitrogen oxides under lean exhaust gas conditions and a process for the treatment of exhaust gases
EP0773057A1 (en) Exhaust gas purifying catalyst
US20070110643A1 (en) Apparatus and method for catalytic treatment of exhaust gases
US6089015A (en) Method of purifying a lean exhaust gas and catalytic system therefor
US7198764B2 (en) Gas treatment system and a method for using the same
US6696031B1 (en) Treatment of exhaust gas
US5727385A (en) Lean-burn nox catalyst/nox trap system
EP1027919A2 (en) Apparatus and method for treating exhaust gases from a diesel engine using nitrogen oxide absorbent
US5788936A (en) Catalyst system for converting emissions of a lean-burn engine
US20070110650A1 (en) Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions
Matsumoto DeNOx catalyst for automotive lean-burn engine
US6482377B2 (en) Method for bypassing sulfur dioxide around an aftertreatment device in an exhaust gas aftertreatment system
Hoard Plasma-catalysis for diesel exhaust treatment: current state of the art
US3701822A (en) Process and catalyst for treating combustion exhaust gas
US20100050604A1 (en) SCR-LNT CATALYST COMBINATION FOR IMPROVED NOx CONTROL OF LEAN GASOLINE AND DIESEL ENGINES