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1. WO2020110979 - EXHAUST PURIFICATION DEVICE AND VEHICLE

Publication Number WO/2020/110979
Publication Date 04.06.2020
International Application No. PCT/JP2019/045925
International Filing Date 25.11.2019
IPC
B01D 53/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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 or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
F01N 3/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
F01N 3/24 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
24characterised by constructional aspects of converting apparatus
CPC
B01D 53/94
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
F01N 3/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
F01N 3/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
24characterised by constructional aspects of converting apparatus
Applicants
  • いすゞ自動車株式会社 ISUZU MOTORS LIMITED [JP]/[JP]
Inventors
  • 金田 建都 KANEDA, Kento
  • 景山 遊大 KAGEYAMA, Yuuta
Agents
  • 特許業務法人鷲田国際特許事務所 WASHIDA & ASSOCIATES
Priority Data
2018-22338329.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) EXHAUST PURIFICATION DEVICE AND VEHICLE
(FR) DISPOSITIF DE PURIFICATION D’ÉCHAPPEMENT ET VÉHICULE
(JA) 排気浄化装置および車両
Abstract
(EN)
This exhaust purification device is provided with: an exhaust pipe through which exhaust gas generated in an internal combustion engine flows; a selective reduction catalyst which is provided in the exhaust pipe and which promotes reduction of nitrogen oxide in the exhaust gas; a reducing agent supply unit which is provided in a stage before the selective reduction catalyst in the exhaust pipe and which supplies a reducing agent for reducing nitrogen oxide in the exhaust gas; and a blocking unit which is disposed between the reducing agent supply unit and the selective reduction catalyst in the exhaust pipe and which, when a reducing agent solid flows through the exhaust pipe together with the exhaust gas, cuts off movement of the reducing agent solid towards the selective reduction catalyst.
(FR)
Ce dispositif de purification d'échappement comprend : un tuyau d'échappement à travers lequel s'écoule un gaz d'échappement généré dans un moteur à combustion interne; un catalyseur de réduction sélective qui est disposé dans le tuyau d'échappement et qui favorise la réduction de l'oxyde d'azote dans le gaz d'échappement; une unité d'alimentation en agent réducteur qui est disposée dans un étage avant le catalyseur de réduction sélective dans le tuyau d'échappement et qui fournit un agent réducteur pour réduire l'oxyde d'azote dans le gaz d'échappement; et une unité de blocage qui est disposée entre l'unité d'alimentation en agent réducteur et le catalyseur de réduction sélective dans le tuyau d'échappement et qui est disposée entre l'unité d'alimentation en agent réducteur et le catalyseur de réduction sélective dans le tuyau d'échappement et qui, lorsqu'un solide d'agent réducteur s'écoule à travers le tuyau d'échappement conjointement avec le gaz d'échappement, coupe le mouvement de l'agent réducteur solide vers le catalyseur de réduction sélective.
(JA)
排気浄化装置は、内燃機関で発生した排気ガスが流れる排気管と、排気管に設けられ、排気ガス中の窒素酸化物の還元を促進する選択還元型触媒と、排気管における選択還元型触媒の前段に設けられ、排気ガス中の窒素酸化物を還元する還元剤を供給する還元剤供給部と、排気管における還元剤供給部と選択還元型触媒との間に設けられ、還元剤固形物が排気ガスとともに排気管内を流れた場合に還元剤固形物の前記選択還元型触媒への移動を遮断する遮断部と、を備える。
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