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1. (WO2005121517) EXHAUST GAS PURIFIER AND METHOD OF EXHAUST GAS PURIFICATION
PCT Biblio. Data
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Pub. No.:
WO/2005/121517
International Application No.:
PCT/JP2004/007965
Publication Date:
22.12.2005
International Filing Date:
08.06.2004
Chapter 2 Demand Filed:
23.02.2005
IPC:
F01N 3/08
(2006.01),
F01N 3/10
(2006.01)
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
Applicants:
HONDA MOTOR CO., LTD.
[JP/JP]; 1-1, Minami-Aoyama 2-chome Minato-ku, Tokyo 1078556 (JP)
(For All Designated States Except US)
.
MATSUO, Yuichi
[JP/JP]; (JP)
(For US Only)
.
KIGUCHI, Kazunori
[JP/JP]; (JP)
(For US Only)
.
SUZUKI, Norihiko
[JP/JP]; (JP)
(For US Only)
.
FURUKAWA, Atsushi
[JP/JP]; (JP)
(For US Only)
Inventors:
MATSUO, Yuichi
; (JP).
KIGUCHI, Kazunori
; (JP).
SUZUKI, Norihiko
; (JP).
FURUKAWA, Atsushi
; (JP)
Agent:
SUENARI, Mikio
; Asaco Kyobashi Building 3rd Floor 6-13, Kyobashi 1-chome Chuo-ku, Tokyo 1040031 (JP)
Priority Data:
Title
(EN)
EXHAUST GAS PURIFIER AND METHOD OF EXHAUST GAS PURIFICATION
(FR)
ÉPURATEUR DE GAZ D’ÉCHAPPEMENT ET MODE D’ÉPURATION DE GAZ D’ÉCHAPPEMENT
(JA)
排気ガス浄化装置および排気ガス浄化方法
Abstract:
(EN)
A technology exhibiting a high efficiency of depollution of nitrogen oxides contained in exhaust gas from a stoichiometric combustion gasoline engine and capable of depollution of nitrogen oxides contained in an oxygen excess exhaust gas such as exhaust gas from a diesel engine. In particular, LnAlO
3
(Ln: rare earth element) carrying Pd oxide is employed as a catalyst material incorporated in catalyst converter (103). Hydrogen supply unit (102) is disposed upstream of the catalyst converter (103), and hydrogen is fed into the exhaust gas from the hydrogen supply unit. LnAlO
3
carrying Pd oxide exhibits high reactivity with nitrogen oxides even in the presence of oxygen to thereby enable obtaining a high depollution ratio. Therefore, it can be utilized as not only a purification catalyst for exhaust gas from a stoichiometric combustion gasoline engine but also a purification catalyst for exhaust gas from a diesel engine.
(FR)
Il est prévu une technologie présentant une efficacité élevée de dépollution d’oxydes d’azote contenus dans le gaz d’échappement provenant d’un moteur à essence à combustion stœchiométrique et capable de dépolluer des oxydes d’azote contenus dans un gaz d’échappement avec surplus d’oxygène tel qu’un gaz d’échappement provenant d’un moteur diesel. En particulier, on emploie un LnAlO
3
(Ln: élément de terres rares) portant un oxyde Pd comme matériau catalytique incorporé dans le convertisseur catalytique (103). L’unité d’arrivée d’hydrogène (102) est disposée en amont du convertisseur catalytique (103), et l’on injecte de l’hydrogène dans le gaz d’échappement en partant de l’unité d’arrivée d’hydrogène. LnAlO
3
portant un oxyde Pd présente une réactivité élevée avec des oxydes d’azote même en présence d’oxygène pour ainsi permettre d’obtenir un rapport de dépollution élevé. C’est la raison pour laquelle on peut l’utiliser non seulement comme catalyseur d’épuration pour gaz d’échappement provenant d’un moteur à essence à combustion stœchiométrique, mais également comme catalyseur d’épuration pour gaz d’échappement provenant d’un moteur diesel.
(JA)
ストイキ燃焼ガソリンエンジンの排気ガス中に含まれる窒素酸化物の浄化効率が高く、さらにディーゼルエンジンの排気ガスのような酸素過剰排気ガス中の窒素酸化物の浄化も行える技術を提供する。すなわち、触媒コンバータ103内の触媒材料として、Pd酸化物を担持したLnAlO
3
(Ln:希土類元素)を採用し、さらに触媒コンバータ103の上流に水素供給装置102を配置し、そこから水素を排気ガス中に供給する。Pd酸化物を担持したLnAlO
3
は、酸素共存下においても窒素酸化物に対する反応性が高く、高い浄化率を得ることができる。そのため、ストイキ燃焼ガソリンエンジンの排気ガスの浄化触媒として利用できると共に、ディーゼルエンジンの排気ガスの浄化触媒として利用することもできる。
Designated States:
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
Japanese (
JA
)
Filing Language:
Japanese (
JA
)