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1. WO2020137739 - EXHAUST PURIFICATION SYSTEM FOR ENGINE

Publication Number WO/2020/137739
Publication Date 02.07.2020
International Application No. PCT/JP2019/049590
International Filing Date 18.12.2019
IPC
B01D 53/94 2006.1
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 2006.1
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
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 3/28
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
28Construction of catalytic reactors
Applicants
  • 株式会社デンソー DENSO CORPORATION [JP]/[JP]
Inventors
  • 古川 賢吾 FURUKAWA Kengo
  • 本江 勇介 HONGO Yusuke
Agents
  • 服部 雅紀 HATTORI Masaki
Priority Data
2018-24779528.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) EXHAUST PURIFICATION SYSTEM FOR ENGINE
(FR) SYSTÈME DE PURIFICATION DE GAZ D'ÉCHAPPEMENT POUR MOTEUR
(JA) エンジンの排気浄化システム
Abstract
(EN)
An exhaust purification system (10) for an engine (90) comprises a catalyst (11) that reduces and purifies a designated component in the engine (90) exhaust, a supply volume calculation unit (23) that calculates the required supply volume of a reducing agent or a precursor thereof in accordance with the operation status of the engine (90), an injection device (13) that supplies a liquid of the reducing agent or the precursor thereof as a spray, and a spray velocity control unit (24) that can control the velocity of the spray in the direction of the exhaust flow. The spray velocity control unit (24) decreases the spray velocity in the direction of the exhaust flow as the possibility of deposits being formed is determined to increase on the basis of the operation status of the engine (90).
(FR)
La présente invention concerne un système (10) de purification de gaz d'échappement pour un moteur (90) qui comprend un catalyseur (11) permettant de réduire et de purifier un composant désigné dans le gaz d'échappement du moteur (90), une unité (23) de calcul du volume d'alimentation permettant de calculer le volume d'alimentation requis d'un agent réducteur ou d'un précurseur de celui-ci conformément à l'état de fonctionnement du moteur (90), un dispositif d'injection (13) qui fournit un liquide de l'agent réducteur ou du précurseur de celui-ci en tant que pulvérisation, et une unité de commande (24) de vitesse de pulvérisation qui peut commander la vitesse de la pulvérisation dans la direction du flux d'échappement. L'unité de commande (24) de vitesse de pulvérisation réduit la vitesse de pulvérisation dans la direction du flux d'échappement lorsque la possibilité de formation de dépôts a tendance à augmenter sur la base de l'état de fonctionnement du moteur (90).
(JA)
エンジン(90)の排気浄化システム(10)は、エンジン(90)の排気中の所定成分を還元浄化する触媒(11)と、エンジン(90)の運転状態に応じて還元剤またはその前駆体の必要供給量を算出する供給量算出部(23)と、還元剤またはその前駆体の液体を噴霧として供給する噴射装置(13)と、噴霧の排気流れ方向の速度を制御可能な噴霧速度制御部(24)とを備える。噴霧速度制御部(24)は、エンジン(90)の運転状態に基づきデポジットが発生しやすいと判断されるほど噴霧の排気流れ方向の速度を遅くする。
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