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1. JP2012189048 - EXHAUST GAS PURIFICATION DEVICE

Office
Japan
Application Number 2011055368
Application Date 14.03.2011
Publication Number 2012189048
Publication Date 04.10.2012
Publication Kind A
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 53/86
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
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
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 3/24
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 TOYOTA INDUSTRIES CORP
株式会社豊田自動織機
Inventors ENDO YASUSHI
遠藤 恭
Agents 曾我 道治
古川 秀利
鈴木 憲七
梶並 順
田口 雅啓
Title
(EN) EXHAUST GAS PURIFICATION DEVICE
(JA) 排気ガス浄化装置
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide an exhaust gas purification device capable of improving purification efficiency in an SCR catalyst.

SOLUTION: An ECU 10 feeds a current to a nichrome wire 20 intermittently when a detected value by a temperature sensor 14 is equal to or less than an upper limit temperature, and does not feed the current to the nichrome wire 20 when the detected value exceeds the upper limit temperature. In the case of feeding the current to the nichrome wire 20 intermittently, the ECU 10 determines the length of time for not feeding the current to the nichrome wire 20 according to a map 30 for a heating means using the value detected by the temperature sensor 14 and a value detected by an air flow meter 7.

COPYRIGHT: (C)2013,JPO&INPIT

(JA)

【課題】SCR触媒での浄化効率を向上した排気ガス浄化装置を提供する。
【解決手段】ECU10は、温度センサ14による検出値が上限温度以下の場合には、ニクロム線20に断続的に通電し、上限温度を超える場合には、ニクロム線20に通電しない。ニクロム線20に断続的に通電する場合には、ECU10は、温度センサ14による検出値及びエアフローメータ7による検出値から、加熱手段用マップ30に基づいて、ニクロム線20への通電がオフとなる時間を決定する。
【選択図】図1