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1. JP2020106011 - EXHAUST EMISSION CONTROL SYSTEM OF ENGINE

Office
Japan
Application Number 2018247795
Application Date 28.12.2018
Publication Number 2020106011
Publication Date 09.07.2020
Grant Number 6930521
Grant Date 16.08.2021
Publication Kind B2
IPC
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
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 or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
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
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 DENSO CORP
株式会社デンソー
Inventors FURUKAWA KENGO
古川 賢吾
MOTOE YUSUKE
本江 勇介
Agents 服部 雅紀
Title
(EN) EXHAUST EMISSION CONTROL SYSTEM OF ENGINE
(JA) エンジンの排気浄化システム
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an exhaust emission control device which can suppress the generation of deposits without reducing a supply quantity of a reductant or the like.

SOLUTION: An exhaust emission control system 10 comprises: a catalyst 11 for reducing and purifying prescribed components in the exhaust emission of an engine 90; a supply quantity calculation part 23 for calculating a necessary supply quantity of a reductant according to an operation state of the engine 90; an injection device 13 for supplying a liquid of the reductant as a spray; and a spray speed control part 24 which can control a spray flow speed. The spray speed control part 24 retards the spray flow speed as the deposits are determined to be liable to be generated on the basis of the operation state of the engine 90.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2020,JPO&INPIT

(JA)

【課題】還元剤等の供給量を減らすことなくデポジットの発生を抑制可能な排気浄化システムを提供する。
【解決手段】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の必要供給量を算出する供給量算出部23と、還元剤の液体を噴霧として供給する噴射装置13と、噴霧流れ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流れ速度を遅くする。
【選択図】図1

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