JP2005538291A - リーンバーンエンジン用排気機構 - Google Patents
リーンバーンエンジン用排気機構 Download PDFInfo
- Publication number
- JP2005538291A JP2005538291A JP2004533631A JP2004533631A JP2005538291A JP 2005538291 A JP2005538291 A JP 2005538291A JP 2004533631 A JP2004533631 A JP 2004533631A JP 2004533631 A JP2004533631 A JP 2004533631A JP 2005538291 A JP2005538291 A JP 2005538291A
- Authority
- JP
- Japan
- Prior art keywords
- nox
- scr catalyst
- exhaust mechanism
- specific reactant
- absorbent
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims description 60
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 515
- 239000003054 catalyst Substances 0.000 claims abstract description 157
- 239000000376 reactant Substances 0.000 claims abstract description 84
- 239000002250 absorbent Substances 0.000 claims abstract description 72
- 230000002745 absorbent Effects 0.000 claims abstract description 72
- 239000002243 precursor Substances 0.000 claims abstract description 41
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000012298 atmosphere Substances 0.000 claims abstract description 10
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 33
- 238000011069 regeneration method Methods 0.000 claims description 26
- 230000008929 regeneration Effects 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 17
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 51
- 238000006243 chemical reaction Methods 0.000 description 28
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 14
- 239000004202 carbamide Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 239000010457 zeolite Substances 0.000 description 13
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 12
- 229910021536 Zeolite Inorganic materials 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- -1 nitroxy salts Chemical class 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 229910052697 platinum Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000004913 activation Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 241000264877 Hippospongia communis Species 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 150000001342 alkaline earth metals Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- 229910052703 rhodium Inorganic materials 0.000 description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910002480 Cu-O Inorganic materials 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000011865 Pt-based catalyst Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052680 mordenite Inorganic materials 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- KSSJBGNOJJETTC-UHFFFAOYSA-N COC1=C(C=CC=C1)N(C1=CC=2C3(C4=CC(=CC=C4C=2C=C1)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)C1=CC(=CC=C1C=1C=CC(=CC=13)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)C1=CC=C(C=C1)OC Chemical compound COC1=C(C=CC=C1)N(C1=CC=2C3(C4=CC(=CC=C4C=2C=C1)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)C1=CC(=CC=C1C=1C=CC(=CC=13)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)N(C1=CC=C(C=C1)OC)C1=C(C=CC=C1)OC)C1=CC=C(C=C1)OC KSSJBGNOJJETTC-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910020647 Co-O Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910020704 Co—O Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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
- 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
- F01N3/10—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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
- B01D53/9431—Processes characterised by a specific device
-
- 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
- B01D53/92—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
-
- 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
- F01N13/0097—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
- F01N3/02—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
-
- 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
- F01N3/033—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
- F01N3/0871—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
- F01N3/10—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/911—NH3-storage component incorporated in the catalyst
-
- 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
- B01D53/949—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start for storing sulfur 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Testing Of Engines (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
CO(NH2)2+H2O→2NH3+CO2 (1)
CO(NH2)2→.NH2+CO (2)
.NH2+NO→N2+H2O (3)
4NO+4NH3+O2→4N2+6H2O (4)
4NH3+5O2→4NO+6H2O (5)
2NH3+2NO2+H2O→NH4NO3+NH4NO2 (6)
コージーライトモノリス(直径5.66インチ(14.4cm)、長さ6インチ(15.24cm)、400セル/1平方インチ(62.0セルcm−2)、壁厚千分の6インチ(0.15mm)を、十分な固体を脱イオン水中にスラリー化し、固体含有量45%にしたガンマアルミナ(表面積120m2g−1)からなるウォッシュコートで被覆した。スラリーを面上に注ぎ、セラミックモノリスの通路を下方に流した。過剰のスラリーは圧縮空気により通路から除去した。次いで、高温の空気流(150℃)中でウォッシュコートを乾燥させることにより水分を除去した。次いで、乾燥被覆モノリスを500℃で1時間か焼した。被覆したモノリス上の総ウォッシュコート装填量は2.5gインチ−3(152.6gl−1)であった。次いで、被覆したモノリスを白金テトラ−アミン溶液中に5分間浸漬し、取り出し、吸引により過剰の溶液を除去した。次いで、モノリスを熱風流(150℃)中で乾燥させ、500℃で1時間か焼した。溶液の濃度は、モノリス上の白金装填量が100gft−3(3.53gl−1)になる様に選択した。次いで、モノリスを酢酸バリウムの水溶液で含浸させた。モノリスを溶液中に5分間浸漬し、取り出し、吸引により過剰の溶液を除去した。次いで、モノリスを熱風流(150℃)中で乾燥させ、500℃で1時間か焼した。溶液の濃度は、モノリス上の最終的なバリウム装填量が800gft−3(28.24gl−1)になる様に選択した。
この温度/流量/NH3注入レベルでは、SCR触媒から大量のNH3がすり抜けることができる。これは、NH3をNOxトラップ触媒(存在する場合)に到達させ、国際特許第WO02/068099号明細書(ここにその内容全体を参考として含める)に記載されている方法を実行するために望ましいことであった。
排気中にNOxトラップ触媒が存在すると、NH3のすり抜けが大幅に低下し(図2参照)、10分間のNH3注入後、最大20ppmのNH3すり抜けが起こる。これは、SCR機構におけるNH3すり抜けの阻止にNOxトラップ触媒を使用できることを示している。
Claims (42)
- リーンバーン内燃機関用の排気機構であって、
前記機構が、酸化窒素(NOx)吸収材と、
NOx特異性反応物によるNOxの選択的触媒還元(SCR)を触媒作用させる触媒と、
前記SCR触媒上流に、NOx特異性反応物またはその前駆物質を排気ガス中に導入するための第一手段と、および
前記第一導入手段により、前記NOx特異性反応物またはその前駆物質を前記排気ガス中に導入することを制御する手段とを備えてなり、
前記SCR触媒が、前記NOx吸収材の上流に、および所望により前記NOx吸収材と共に配置されてなり、
前記制御手段が、前記SCR触媒が活性である場合にのみ、前記第一導入手段により、前記NOx特異性反応物またはその前駆物質を排気ガスに導入するように設計されてなり、それによって大気中へのNOx特異性反応物の排出が実質的に阻止されてなる、排気機構。 - 前記SCR触媒の活性が、その温度によって決定される、請求項1に記載の排気機構。
- 前記SCR触媒が第一の予め決定された温度より高い時に、前記制御手段が前記NOx特異性反応物またはその前駆物質を導入するものである、請求項2に記載の排気機構。
- 前記SCR触媒がNOx特異性反応物をNOに酸化するのに十分に高温である時に、前記制御手段が前記NOx特異性反応物またはその前駆物質の前記排気ガスへ供給することを中断するように設計されてなる、請求項1〜3のいずれか一項に記載の排気機構。
- 前記SCR触媒が第二の予め決定された温度より高い時に、前記NOx特異性反応物またはその前駆物質の供給が中断されてなる、請求項1に記載の排気機構。
- 前記NOx特異性反応物またはその前駆物質を導入する第二手段を備えてなり、
前記第二導入手段が、前記NOx吸収材の上流であり、かつ、前記SCR触媒の下流に配置されてなる、請求項1〜5のいずれか一項に記載の排気機構。 - 前記NOx吸収材がNOx再生が有効である温度より高い時にのみ、前記制御手段が、前記NOx特異性反応物またはその前駆物質を前記排気ガスに供給するように設計されてなる、請求項6に記載の排気機構。
- 前記NOx再生が有効である温度が、第三の予め決定された温度である、請求項7に記載の排気機構。
- 前記NOx吸収材がNOx貯蔵効果が熱的に制限される温度より高い時に、前記制御手段が、前記NOx特異性反応物またはその前駆物質の前記排気ガスへの供給を中断するように設計されてなる、請求項7または8に記載の排気機構。
- 前記NOx貯蔵が効果的に熱的に制限される温度が、第四の予め決定された温度である、請求項9に記載の排気機構。
- 前記第一の予め決定された温度が100〜600℃、好ましくは150〜500℃、最も好ましくは200〜450℃である、請求項3に記載の排気機構。
- 前記第二の予め決定された温度が450〜900℃、好ましくは550〜800℃、最も好ましくは650〜700℃である、請求項5に記載の排気機構。
- 前記第三の予め決定された温度が75〜200℃、好ましくは100〜175℃、最も好ましくは125〜600℃である、請求項8または11に記載の排気機構。
- 前記第一の予め決定された温度が前記第三の予め決定された温度と等しい、請求項13に記載の排気機構。
- 前記第四の予め決定された温度が350〜600℃、好ましくは400〜550℃、最も好ましくは450〜500℃である、請求項10に記載の排気機構。
- 前記排気ガス中のNOをNO2に酸化するための触媒と、および
NO2中で400℃までで燃焼させるための、前記排気ガス中の粒子状物質を集めるフィルターとを備えてなる、請求項1〜15のいずれか一項に記載の排気機構。 - 前記フィルターが、前記SCR触媒の上流にある、請求項16に記載の排気機構。
- 前記SCR触媒が前記フィルター上に配置されてなる、請求項16に記載の排気機構。
- 前記NOx吸収材が前記フィルター上に配置されてなる、請求項16または18に記載の排気機構。
- 前記NOx吸収材の下流に配置された第二のSCR触媒をさらに備えてなる、請求項1〜19のいずれか一項に記載の排気機構。
- 前記SCR触媒の下流に配置された、前記排気ガス中の前記NOx特異性反応物またはその前駆物質の濃度を検出するための少なくとも一個のセンサーを包含してなる、請求項1〜20のいずれか一項に記載の排気機構。
- 前記排気ガス中の前記NOx特異性反応物またはその前駆物質の濃度を検出するための、前記NOx吸収材の下流に配置された少なくとも一個のセンサーを包含する、請求項1〜21のいずれか一項に記載の排気機構。
- 前記制御手段が、前記排気ガス中の前記NOx特異性反応物またはその前駆物質の検出された濃度に応答して、前記NOx特異性反応物またはその前駆物質の供給を調整し、それによって前記NOx特異性反応物またはその前駆物質のすり抜けを低減させる、請求項21または22に記載の排気機構。
- 前記制御手段が、排気ガス温度に応答して、前記NOx特異性反応物またはその前駆物質の供給を調整する、請求項1〜23のいずれか一項に記載の排気機構。
- 前記制御手段が、エンジン速度/負荷マップにおける予め決定された設定に応答して、前記NOx特異性反応物またはその前駆物質の供給を調整してなる、請求項1〜24のいずれか一項に記載の排気機構。
- 前記制御手段が、前記NOx特異性反応物またはその前駆物質を間欠的に、かつ、「スパイク」濃度で供給するように設計されてなる、請求項1〜25のいずれか一項に記載の排気機構。
- 前記NOx特異性反応物またはその前駆物質の供給の期間が、1秒間〜10分間の範囲から選択されるものである、請求項26に記載の排気機構。
- 請求項1〜27のいずれか一項に記載の排気機構を包含する、リーンバーン内燃機関。
- 前記リーンバーン内燃機関が、ディーゼルエンジンまたはガソリンエンジンである、請求項28に記載の機関。
- リーンバーン内燃機関から出る排気ガス中のNOxを処理する方法であって、
前記内燃機関が、酸化窒素(NOx)吸収材と、およびNOx特異性反応物によるNOxの選択的触媒還元(SCR)を触媒作用させる触媒とを備えてなる排気機構を包含してなり、
前記SCR触媒が、前記NOx吸収材の上流に、および所望により前記NOx吸収材と共に配置されてなり、
前記SCR触媒が不活性である時に、前記NOx吸収材を不十分なNOx特異性反応物と接触させ、前記NOx吸収材上に貯蔵された総NOxを完全に還元し、それによって前記NOx吸収材を再生させ、および
前記SCR触媒が活性である時に、前記SCR触媒を十分なNOx特異性反応物と接触させ、前記排気ガス中のNOxをN2に還元し、それによって大気中へのNOx特異性反応物の排出を実質的に阻止することを含んでなる、方法。 - 前記SCR触媒の活性が、第一の予め決定された温度に対する前記SCR触媒の温度によって決定される、請求項30に記載の方法。
- 前記SCR触媒が不活性である時に、前記NOx吸収材と接触させる前記NOx特異性反応物が前記触媒と接触しない、請求項30または31に記載の方法。
- 前記SCR触媒が活性である時、十分なNOx特異性反応物が前記SCR触媒と接触し、前記排気ガス中のNOxをN2に還元し、かつ、前記SCR触媒をすり抜けて前記NOx吸収材と接触し、それによって貯蔵されているNOxを還元し、
前記工程が、すり抜けるNOx特異性反応物が貯蔵された総NOxを完全に還元するには不十分であるように制御されてなる、請求項30〜32のいずれか一項に記載の方法。 - 前記第一の予め決定された温度が100〜600℃、好ましくは150〜500℃、最も好ましくは200〜450℃である、請求項31に記載の排気機構。
- 再生の後、前記NOx吸収材が、再生開始時に存在するNOx含有量の5〜50%で含有されてなる、請求項30〜34のいずれか一項に記載の方法。
- 前記吸収材がNOxのすり抜けが起こる前記NOx含有量の5〜50%を含有する時に、再生が開始する、請求項30〜35のいずれか一項に記載の方法。
- 再生が、下記:
NOx特異性反応物が、前記NOx吸収材を担持している基材の長さに沿った途中の地点で検出された時、
固体吸収材を直列に担持されている2個の基材を有する機構において、NOx特異性反応物が前記基材同士の間の地点で検出された時、
エンジン速度/負荷マップ中で予め決定されたデータに基づいて規定されたNOx含有量のレベルに達した時、
NOx特異性反応物のすり抜けの初期観察から反復的に確立されたNOx含有量のレベルに達した時、
の一つの時点で停止するように制御されてなる、請求項30〜36のいずれか一項に記載の方法。 - 吸収および/または再生の期間が1秒間〜10分間の範囲内にある、請求項30〜37のいずれか一項に記載の方法。
- 前記NOx吸収材が第一基材上に支持され、前記SCR触媒が第二基材上に支持されてなる、請求項30〜38のいずれか一項に記載の方法。
- 前記NOx特異性反応物がその前駆物質からその場で形成されてなる、請求項30〜39のいずれか一項に記載の方法。
- 前記NOx特異性反応物の前駆物質を触媒作用により反応させ、NOx特異性反応物を形成する、請求項40に記載の方法。
- 出発ガスがリーンバーン、特にディーゼル内燃機関の排気である、請求項30〜41のいずれか一項に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0220645.6A GB0220645D0 (en) | 2002-09-05 | 2002-09-05 | Exhaust system for a lean burn ic engine |
PCT/GB2003/003827 WO2004022935A1 (en) | 2002-09-05 | 2003-09-03 | Exhaust system for lean burn ic engines |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010106241A Division JP5528195B2 (ja) | 2002-09-05 | 2010-05-06 | リーンバーンエンジン用排気機構 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005538291A true JP2005538291A (ja) | 2005-12-15 |
JP2005538291A5 JP2005538291A5 (ja) | 2006-10-26 |
JP4628787B2 JP4628787B2 (ja) | 2011-02-09 |
Family
ID=9943553
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004533631A Expired - Lifetime JP4628787B2 (ja) | 2002-09-05 | 2003-09-03 | リーンバーンエンジン用排気機構 |
JP2010106241A Expired - Lifetime JP5528195B2 (ja) | 2002-09-05 | 2010-05-06 | リーンバーンエンジン用排気機構 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010106241A Expired - Lifetime JP5528195B2 (ja) | 2002-09-05 | 2010-05-06 | リーンバーンエンジン用排気機構 |
Country Status (12)
Country | Link |
---|---|
US (1) | US7178331B2 (ja) |
EP (1) | EP1534941B1 (ja) |
JP (2) | JP4628787B2 (ja) |
KR (1) | KR101060125B1 (ja) |
AT (1) | ATE556203T1 (ja) |
AU (1) | AU2003269109A1 (ja) |
BR (1) | BR0313501A (ja) |
CA (1) | CA2494112A1 (ja) |
GB (1) | GB0220645D0 (ja) |
MX (1) | MXPA05001877A (ja) |
WO (1) | WO2004022935A1 (ja) |
ZA (1) | ZA200500919B (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006342735A (ja) * | 2005-06-09 | 2006-12-21 | Mitsubishi Fuso Truck & Bus Corp | 排気浄化装置 |
JP2008121598A (ja) * | 2006-11-14 | 2008-05-29 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2009524765A (ja) * | 2006-01-27 | 2009-07-02 | ピールブルク ゲゼルシャフト ミット ベシュレンクテル ハフツング | 内燃機関の排ガス中の窒素酸化物を還元するための装置 |
JP2014118945A (ja) * | 2012-12-19 | 2014-06-30 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
Families Citing this family (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10315593B4 (de) * | 2003-04-05 | 2005-12-22 | Daimlerchrysler Ag | Abgasnachbehandlungseinrichtung und -verfahren |
JP4020054B2 (ja) * | 2003-09-24 | 2007-12-12 | トヨタ自動車株式会社 | 内燃機関の排気浄化システム |
US7490464B2 (en) * | 2003-11-04 | 2009-02-17 | Basf Catalysts Llc | Emissions treatment system with NSR and SCR catalysts |
JP2006046200A (ja) * | 2004-08-05 | 2006-02-16 | Hitachi Ltd | ディーゼル内燃機関用排ガス浄化フィルタとその製造方法及び排ガス浄化装置 |
DE102004046640B4 (de) * | 2004-09-25 | 2013-07-11 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102005002289B4 (de) * | 2005-01-17 | 2007-04-19 | J. Eberspächer GmbH & Co. KG | Abgasbehandlungssystem |
JP4525442B2 (ja) * | 2005-04-21 | 2010-08-18 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US7862640B2 (en) * | 2006-03-21 | 2011-01-04 | Donaldson Company, Inc. | Low temperature diesel particulate matter reduction system |
JP2007285295A (ja) * | 2006-03-24 | 2007-11-01 | Ngk Insulators Ltd | 排気ガス浄化システム |
DE102006025257B4 (de) * | 2006-05-31 | 2016-09-01 | Volkswagen Ag | Verfahren zum Betreiben eines SCR-Katalysators sowie Programmalgorithmus zur Ausführung des Verfahrens |
WO2008006427A1 (de) * | 2006-07-08 | 2008-01-17 | Umicore Ag & Co. Kg | Strukturierter scr-katalysator zur reduktion von stickoxiden im abgas von magermotoren unter verwendung von ammoniak als reduktionsmittel |
US20080141662A1 (en) * | 2006-12-14 | 2008-06-19 | Markus Schuster | Fluid injecting and mixing systems for exhaust after-treatment devices |
DE102007027677B4 (de) | 2007-06-15 | 2010-12-09 | Süd-Chemie AG | Abgasreinigungssystem |
US8146343B2 (en) * | 2007-08-08 | 2012-04-03 | Ford Global Technologies, Llc | Approach for injecting a reductant |
KR101379955B1 (ko) * | 2007-08-10 | 2014-03-28 | 에스케이이노베이션 주식회사 | 다단 저감 방식의 배기가스 정화 장치 |
US8001769B2 (en) * | 2007-08-20 | 2011-08-23 | Caterpillar Inc. | Control of SCR system having a filtering device |
US7966812B2 (en) | 2007-08-29 | 2011-06-28 | Ford Global Technologies, Llc | Multi-stage regeneration of particulate filter |
JP4286888B2 (ja) * | 2007-09-28 | 2009-07-01 | 日産ディーゼル工業株式会社 | 排気浄化装置 |
DE102007046460A1 (de) * | 2007-09-28 | 2009-04-02 | Daimler Ag | Verfahren zur Verminderung der Emission von Stickstoffdioxid bei einem Kraftfahrzeug mit einer mager betriebenen Brennkraftmaschine |
JP4286887B2 (ja) * | 2007-09-28 | 2009-07-01 | 日産ディーゼル工業株式会社 | 排気浄化装置 |
US7657364B2 (en) * | 2007-10-10 | 2010-02-02 | Cummins IP. Inc | Apparatus, system, and method for thermal management of an engine comprising a continuously variable transmission |
JP4947036B2 (ja) * | 2007-11-14 | 2012-06-06 | マツダ株式会社 | エンジンの排気浄化方法 |
KR100999616B1 (ko) | 2007-12-14 | 2010-12-08 | 기아자동차주식회사 | 배기 가스 내의 질소산화물 저감 장치 |
KR100911586B1 (ko) * | 2007-12-14 | 2009-08-10 | 현대자동차주식회사 | 선택적 촉매 환원장치용 일산화탄소 저감장치 |
EP2072773A1 (en) | 2007-12-21 | 2009-06-24 | Umicore AG & Co. KG | Method for treating NOx in exhaust gas and system therefore |
JP2009162157A (ja) * | 2008-01-08 | 2009-07-23 | Honda Motor Co Ltd | 内燃機関の排気浄化装置 |
US8091345B2 (en) * | 2008-02-06 | 2012-01-10 | Cummins Ip, Inc | Apparatus, system, and method for efficiently increasing exhaust flow temperature for an internal combustion engine |
DE102008013541B4 (de) * | 2008-03-11 | 2014-05-15 | Süd-Chemie AG | Abgasreinigungssystem zur selektiven katalytischen Reduktion von Stickoxiden, Verfahren und Verwendung |
DE102008016177A1 (de) | 2008-03-28 | 2009-10-08 | Süd-Chemie AG | Harnstoffhydrolysekatalysator |
ATE460973T1 (de) * | 2008-04-11 | 2010-04-15 | Umicore Ag & Co Kg | Abgasreinigungssystem zur behandlung von motorenabgasen mittels scr-katalysator |
US8156730B2 (en) * | 2008-04-29 | 2012-04-17 | Cummins, Inc. | Engine performance management during a diesel particulate filter regeneration event |
DE102008026178A1 (de) * | 2008-05-30 | 2009-12-03 | Deutz Ag | SCR-Katalysator mit hohem Wirkungsgrad |
US8302385B2 (en) * | 2008-05-30 | 2012-11-06 | Cummins Ip, Inc. | Apparatus, system, and method for controlling engine exhaust temperature |
JP5251266B2 (ja) * | 2008-06-03 | 2013-07-31 | いすゞ自動車株式会社 | 排気ガス浄化装置及び排気ガス浄化システム |
GB0812544D0 (en) | 2008-07-09 | 2008-08-13 | Johnson Matthey Plc | Exhaust system for a lean burn IC engine |
US20100050604A1 (en) * | 2008-08-28 | 2010-03-04 | John William Hoard | SCR-LNT CATALYST COMBINATION FOR IMPROVED NOx CONTROL OF LEAN GASOLINE AND DIESEL ENGINES |
US9194273B2 (en) | 2008-10-31 | 2015-11-24 | Cummins Inc. | Apparatus, system, and method for aftertreatment control and diagnostics |
US8648322B2 (en) * | 2008-10-31 | 2014-02-11 | Cummins Inc. | Optical sensing in an adverse environment |
US8223337B2 (en) * | 2008-10-31 | 2012-07-17 | Cummins Inc. | Apparatus, system, and method for aftertreatment control and diagnostics |
DE102008055890A1 (de) * | 2008-11-05 | 2010-05-12 | Süd-Chemie AG | Partikelminderung mit kombiniertem SCR- und NH3-Schlupf-Katalysator |
US8196391B2 (en) * | 2008-12-02 | 2012-06-12 | Ford Global Technologies, Llc | SCR emissions-control system |
US20100170225A1 (en) * | 2009-01-08 | 2010-07-08 | Caterpillar Inc. | Exhaust treatment system having a reductant supply system |
US8844274B2 (en) * | 2009-01-09 | 2014-09-30 | Ford Global Technologies, Llc | Compact diesel engine exhaust treatment system |
US8266899B2 (en) * | 2009-01-13 | 2012-09-18 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification apparatus for internal combustion engine |
US8920759B2 (en) * | 2009-03-02 | 2014-12-30 | GM Global Technology Operations LLC | Method and apparatus for reducing NOx emissions from a lean burning hydrocarbon fueled power source |
US9662611B2 (en) | 2009-04-03 | 2017-05-30 | Basf Corporation | Emissions treatment system with ammonia-generating and SCR catalysts |
US8062618B2 (en) * | 2009-04-17 | 2011-11-22 | Ford Global Technologies, Llc | Exhaust aftertreatment system and method of treating exhaust gas |
US20110047970A1 (en) * | 2009-09-01 | 2011-03-03 | Cummins Intellectual Properties, Inc. | HIGH EFFICIENCY NOx REDUCTION SYSTEM AND METHOD |
US20110064633A1 (en) * | 2009-09-14 | 2011-03-17 | Ford Global Technologies, Llc | Multi-Functional Catalyst Block and Method of Using the Same |
US8915062B2 (en) | 2009-10-09 | 2014-12-23 | GM Global Technology Operations LLC | Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system |
GB2481057A (en) * | 2010-06-11 | 2011-12-14 | Johnson Matthey Plc | Exhaust system comprising a catalyst with a downstream filter and SCR catalyst |
US8218147B2 (en) | 2010-06-18 | 2012-07-10 | Cummins Inc. | Apparatus, system, and method for detecting engine fluid constituents |
CN103124837B (zh) * | 2010-07-02 | 2016-06-22 | 马克卡车公司 | 处理柴油发动机排气的方法、柴油发动机和排气后处理系统以及车辆 |
US8466083B2 (en) * | 2010-08-27 | 2013-06-18 | GM Global Technology Operations LLC | Bi-functional catalyst materials for lean exhaust NOx reduction |
US9441517B2 (en) * | 2010-09-02 | 2016-09-13 | Ford Global Technologies, Llc | Diesel engine exhaust treatment system |
US8776503B2 (en) | 2010-09-20 | 2014-07-15 | GM Global Technology Operations LLC | Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system |
US8137648B2 (en) * | 2010-10-12 | 2012-03-20 | Ford Global Technologies, Llc | Diesel engine exhaust treatment system and method including a platinum group metal trapping device |
KR101190934B1 (ko) | 2011-02-15 | 2012-10-12 | 성균관대학교산학협력단 | 수소 생산용 개질부를 구비하는 연소장치 |
WO2013022517A1 (en) * | 2011-08-09 | 2013-02-14 | International Engine Intellectual Property Company, Llc | Method and system for reducing nox in engine exhaust using a cooling element |
US8813478B2 (en) * | 2011-12-15 | 2014-08-26 | GM Global Technology Operations LLC | Selective catalytic reduction (SCR) system for NOx storage |
EP2868881A4 (en) * | 2012-06-19 | 2015-07-29 | Toyota Motor Co Ltd | EXHAUST GAS CLEANING DEVICE FOR A COMBUSTION ENGINE |
US9260994B2 (en) | 2012-08-24 | 2016-02-16 | Cummins Ip, Inc. | Reductant injection and mixing system |
BR112016005657B1 (pt) * | 2013-09-16 | 2022-03-29 | Johnson Matthey Public Limited Company | Sistema de escape para tratamento de um gás de escape, e, método para tratar gás de escape de um motor de combustão interna de um veículo |
KR101684502B1 (ko) * | 2013-11-22 | 2016-12-08 | 현대자동차 주식회사 | 배기 가스 정화 장치 및 배기 가스 정화 방법 |
GB201401115D0 (en) | 2014-01-23 | 2014-03-12 | Johnson Matthey Plc | Diesel oxidation catalyst and exhaust system |
KR102506874B1 (ko) * | 2018-07-31 | 2023-03-08 | 현대자동차주식회사 | 배기가스 후처리시스템의 우레아 분사제어방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63146116U (ja) * | 1987-03-13 | 1988-09-27 | ||
JPH03129712U (ja) * | 1990-04-10 | 1991-12-26 | ||
JPH05302508A (ja) * | 1992-02-25 | 1993-11-16 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2000029728A1 (en) * | 1998-11-13 | 2000-05-25 | Engelhard Corporation | STAGED REDUCTANT INJECTION FOR IMPROVED NOx REDUCTION |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4902487A (en) | 1988-05-13 | 1990-02-20 | Johnson Matthey, Inc. | Treatment of diesel exhaust gases |
DE4038054A1 (de) | 1990-11-29 | 1992-06-04 | Man Technologie Gmbh | Verfahren und vorrichtung zur selektiven katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion in sauerstoffhaltigen abgasen |
US5316661A (en) | 1992-07-08 | 1994-05-31 | Mobil Oil Corporation | Processes for converting feedstock organic compounds |
DE4315278A1 (de) | 1993-05-07 | 1994-11-10 | Siemens Ag | Verfahren und Einrichtung zur Dosierung eines Reduktionsmittels in ein stickoxidhaltiges Abgas |
DE59503286D1 (de) | 1994-08-10 | 1998-09-24 | Siemens Ag | Verfahren zur katalytischen umsetzung von im abgas eines verbrennungsmotors enthaltenen stickoxiden |
GB9511421D0 (en) | 1995-06-06 | 1995-08-02 | Johnson Matthey Plc | Improvements in emissions control |
DE19646643C1 (de) | 1996-11-12 | 1998-02-12 | Daimler Benz Ag | Anlage zur Stickoxid-Reduktionsmitteleinspritzung in einen Abgasstrom |
US5976475A (en) | 1997-04-02 | 1999-11-02 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction |
US5968464A (en) | 1997-05-12 | 1999-10-19 | Clean Diesel Technologies, Inc. | Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction |
JP3353650B2 (ja) * | 1997-06-20 | 2002-12-03 | トヨタ自動車株式会社 | 内燃機関の触媒被毒再生装置 |
DE19807935C1 (de) | 1998-02-25 | 1999-08-26 | Siemens Ag | Vorrichtung zur Reduzierung des NO¶x¶-Gehaltes im Abgas einer Brennkraftmaschine |
GB9808876D0 (en) | 1998-04-28 | 1998-06-24 | Johnson Matthey Plc | Combatting air pollution |
DE69916312T2 (de) * | 1998-10-12 | 2005-03-17 | Johnson Matthey Public Ltd., Co. | Verfahren und vorrichtung zur behandlung von verbrennungsabgasen |
ATE224507T1 (de) * | 1998-12-05 | 2002-10-15 | Johnson Matthey Plc | Verbesserungen bei abgaspartikelkontrolle |
FR2787037B1 (fr) | 1998-12-09 | 2002-01-11 | Inst Francais Du Petrole | Procede et dispositif d'elimination des oxydes d'azote dans une ligne d'echappement de moteur a combustion interne |
JP3674358B2 (ja) | 1999-02-16 | 2005-07-20 | 日産自動車株式会社 | 内燃機関の排気浄化装置 |
JP2000282843A (ja) | 1999-03-31 | 2000-10-10 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
DE19921974A1 (de) | 1999-05-12 | 2000-11-16 | Volkswagen Ag | Vorrichtung zum Reduzieren von schädlichen Bestandteilen im Abgas einer Brennkraftmaschine, insbesondere einer Diesel-Brennkraftmaschine |
GB9913331D0 (en) * | 1999-06-09 | 1999-08-11 | Johnson Matthey Plc | Treatment of exhaust gas |
US6615580B1 (en) * | 1999-06-23 | 2003-09-09 | Southwest Research Institute | Integrated system for controlling diesel engine emissions |
GB9915939D0 (en) * | 1999-07-08 | 1999-09-08 | Johnson Matthey Plc | Improvements in pollution control |
US6295809B1 (en) | 1999-07-12 | 2001-10-02 | Ford Global Technologies, Inc. | Emission control system with a catalyst |
US6354079B1 (en) | 1999-11-26 | 2002-03-12 | Hyundai Motor Company | Apparatus and method of purifying NOx in the exhaust gas of the diesel engine |
DE19961165A1 (de) * | 1999-12-17 | 2001-08-02 | Volkswagen Ag | Verfahren zur Entschwefelung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NO¶x¶-Speicherkatalysators |
US6470673B1 (en) | 2000-02-22 | 2002-10-29 | Ford Global Technologies, Inc. | Control of a NOX reductant delivery system |
JP2001314763A (ja) | 2000-05-10 | 2001-11-13 | Johnson Matthey Japan Inc | NOx吸蔵還元型触媒用支持材とそれを用いたNOx吸蔵還元型触媒 |
US6415602B1 (en) * | 2000-10-16 | 2002-07-09 | Engelhard Corporation | Control system for mobile NOx SCR applications |
JP3794468B2 (ja) | 2000-12-19 | 2006-07-05 | 三菱電機株式会社 | 内燃機関の排気ガス浄化装置 |
GB0104682D0 (en) | 2001-02-26 | 2001-04-11 | Johnson Matthey Plc | Gas treatment using ammonia |
WO2003054364A2 (en) | 2001-12-20 | 2003-07-03 | Johnson Matthey Public Limited Company | Method and apparatus for filtering partriculate matter and selective catalytic reduction of nox |
US6996975B2 (en) * | 2004-06-25 | 2006-02-14 | Eaton Corporation | Multistage reductant injection strategy for slipless, high efficiency selective catalytic reduction |
US7063642B1 (en) * | 2005-10-07 | 2006-06-20 | Eaton Corporation | Narrow speed range diesel-powered engine system w/ aftertreatment devices |
-
2002
- 2002-09-05 GB GBGB0220645.6A patent/GB0220645D0/en not_active Ceased
-
2003
- 2003-09-03 EP EP03750891A patent/EP1534941B1/en not_active Expired - Lifetime
- 2003-09-03 AU AU2003269109A patent/AU2003269109A1/en not_active Abandoned
- 2003-09-03 WO PCT/GB2003/003827 patent/WO2004022935A1/en active Application Filing
- 2003-09-03 MX MXPA05001877A patent/MXPA05001877A/es active IP Right Grant
- 2003-09-03 ZA ZA200500919A patent/ZA200500919B/en unknown
- 2003-09-03 CA CA002494112A patent/CA2494112A1/en not_active Abandoned
- 2003-09-03 KR KR1020057003827A patent/KR101060125B1/ko active IP Right Grant
- 2003-09-03 AT AT03750891T patent/ATE556203T1/de active
- 2003-09-03 JP JP2004533631A patent/JP4628787B2/ja not_active Expired - Lifetime
- 2003-09-03 BR BR0313501-2A patent/BR0313501A/pt not_active IP Right Cessation
- 2003-09-03 US US10/526,511 patent/US7178331B2/en not_active Expired - Lifetime
-
2010
- 2010-05-06 JP JP2010106241A patent/JP5528195B2/ja not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63146116U (ja) * | 1987-03-13 | 1988-09-27 | ||
JPH03129712U (ja) * | 1990-04-10 | 1991-12-26 | ||
JPH05302508A (ja) * | 1992-02-25 | 1993-11-16 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2000029728A1 (en) * | 1998-11-13 | 2000-05-25 | Engelhard Corporation | STAGED REDUCTANT INJECTION FOR IMPROVED NOx REDUCTION |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006342735A (ja) * | 2005-06-09 | 2006-12-21 | Mitsubishi Fuso Truck & Bus Corp | 排気浄化装置 |
JP4592505B2 (ja) * | 2005-06-09 | 2010-12-01 | 三菱ふそうトラック・バス株式会社 | 排気浄化装置 |
JP2009524765A (ja) * | 2006-01-27 | 2009-07-02 | ピールブルク ゲゼルシャフト ミット ベシュレンクテル ハフツング | 内燃機関の排ガス中の窒素酸化物を還元するための装置 |
JP2008121598A (ja) * | 2006-11-14 | 2008-05-29 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2014118945A (ja) * | 2012-12-19 | 2014-06-30 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2004022935A1 (en) | 2004-03-18 |
KR20050057213A (ko) | 2005-06-16 |
MXPA05001877A (es) | 2005-06-03 |
AU2003269109A1 (en) | 2004-03-29 |
JP5528195B2 (ja) | 2014-06-25 |
KR101060125B1 (ko) | 2011-08-29 |
ZA200500919B (en) | 2006-10-25 |
JP2010236554A (ja) | 2010-10-21 |
US20060254258A1 (en) | 2006-11-16 |
BR0313501A (pt) | 2005-06-21 |
US7178331B2 (en) | 2007-02-20 |
CA2494112A1 (en) | 2004-03-18 |
GB0220645D0 (en) | 2002-10-16 |
JP4628787B2 (ja) | 2011-02-09 |
EP1534941B1 (en) | 2012-05-02 |
ATE556203T1 (de) | 2012-05-15 |
EP1534941A1 (en) | 2005-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5528195B2 (ja) | リーンバーンエンジン用排気機構 | |
JP6573862B2 (ja) | 触媒化基材モノリス | |
EP1458960B1 (en) | Improvements in selective catalytic reduction | |
KR101659788B1 (ko) | 조건에 따라 이산화질소를 제공하기 위한 온도제어식 프리캐탈리스트를 사용하는 디젤기관 배기가스의 질소 산화물 제거 | |
JP6182537B2 (ja) | Scr触媒を備えたリーンバーン内燃機関用排気システム | |
RU2620474C2 (ru) | Выхлопная система для двигателя ic, работающего на бедных смесях, содержащая компонент pgm и катализатор scr | |
US10215072B2 (en) | Methods for controlling and detecting catalyst poisoning of selective catalytic reduction devices | |
JP2006522272A (ja) | 粒子状物質フィルターおよびNOx吸収材を包含する、リーンバーンエンジン用排気機構 | |
WO2006013998A1 (ja) | 窒素酸化物を接触還元する方法 | |
WO2018025827A1 (ja) | コールドスタート対応尿素scrシステム | |
JP2008516152A (ja) | 二酸化窒素の分解方法 | |
US20180038298A1 (en) | Method for controlling an exhaust gas treatment system | |
GB2497598A (en) | Catalysed substrate monolith and its use in an exhaust system for a lean burn ic engine | |
EP1370343B1 (en) | GAS TREATMENT USING NOx-SPECIFIC REACTANT | |
JP4874093B2 (ja) | 二酸化窒素の分解方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060904 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060904 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090424 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20090724 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20090731 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20091026 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100105 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100506 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20100511 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100625 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100915 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20101015 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20101110 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131119 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4628787 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |