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1. (WO2018074368) ENGINE EXHAUST PURIFICATION CONTROL DEVICE
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Pub. No.: WO/2018/074368 International Application No.: PCT/JP2017/037231
Publication Date: 26.04.2018 International Filing Date: 13.10.2017
IPC:
F01N 3/20 (2006.01) ,F01N 3/08 (2006.01) ,F02D 41/04 (2006.01) ,F02D 45/00 (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
10
by thermal or catalytic conversion of noxious components of exhaust
18
characterised by methods of operation; Regulation
20
specially adapted for catalytic conversion
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
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
02
Circuit arrangements for generating control signals
04
Introducing corrections for particular operating conditions
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
45
Electrical control not provided for in groups F02D41/-F02D43/98
Applicants:
マツダ株式会社 MAZDA MOTOR CORPORATION [JP/JP]; 広島県安芸郡府中町新地3番1号 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima 7308670, JP
Inventors:
坪井 吾朗 TSUBOI Goro; JP
山口 能将 YAMAGUCHI Takayuki; JP
池田 大志 IKEDA Daishi; JP
富田 吉昭 TOMITA Yoshiaki; JP
石原 力 ISHIHARA Chikara; JP
Agent:
田中 伸一郎 TANAKA Shinichiro; JP
中村 稔 NAKAMURA Minoru; JP
大塚 文昭 OHTSUKA Fumiaki; JP
弟子丸 健 DESHIMARU Takeshi; JP
Priority Data:
2016-20544519.10.2016JP
Title (EN) ENGINE EXHAUST PURIFICATION CONTROL DEVICE
(FR) DISPOSITIF DE RÉGULATION DE PURIFICATION D'ÉCHAPPEMENT DE MOTEUR
(JA) エンジンの排気浄化制御装置
Abstract:
(EN) An NH3 supply amount control unit that reduces and corrects the amount of NH3 supplied to an SCR catalyst by an NH3 supply unit, when exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and the NOX occluded by the NOX catalyst is reduced to N2. The amount that the NH3 supply is reduced by the NH3 supply amount control unit is set so as to increase as the flowrate of exhaust gas detected or estimated by an exhaust gas flowrate detection unit increases.
(FR) L'invention concerne une unité de régulation de quantité d'alimentation en NH3 qui réduit et corrige la quantité de NH3 fournie à un catalyseur SCR par une unité d'alimentation NH3, lorsque le gaz d'échappement s'écoulant dans un catalyseur de NOX a un rapport air-carburant riche et que le NOX occlus par le catalyseur de NOX est réduit à N2. La quantité d'alimentation en NH3 qui est réduite par l'unité de régulation de quantité d'alimentation NH3 est réglée de manière à augmenter au fur et à mesure que le débit de gaz d'échappement détecté ou estimé par une unité de détection de débit de gaz d'échappement augmente.
(JA) NH3 供給量制御部が、NOX 触媒に流入する排気ガスの空燃比がリッチな状態であって当該NOX 触媒が吸蔵していたNOX がN2 に還元されている際には、NH3 供給部によるSCR触媒へのNH3 の供給量を削減補正する。NH3 供給量制御部によるNH3 の供給量の削減量は、排気ガス流量検出部によって検出ないし推定される排気ガスの流量が多い程、多量であるように設定されている。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)