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1. (WO2018063052) MULTIPLE BANK EXHAUST SYSTEM COMPRISING REDUCTANT SUPPLY SYSTEM ARRANGED UPSTREAM OF A TURBINE
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Pub. No.: WO/2018/063052 International Application No.: PCT/SE2017/050838
Publication Date: 05.04.2018 International Filing Date: 22.08.2017
IPC:
F02B 37/02 (2006.01) ,F01N 3/20 (2006.01) ,F01N 13/10 (2010.01) ,F02B 37/22 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37
Engines characterised by provision of pumps driven at least for part of the time by exhaust
02
Gas passages between engine outlet and pump drive, e.g. reservoirs
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
13
Exhaust or silencing apparatus characterised by constructional features
08
Other arrangements or adaptations of exhaust conduits
10
of exhaust manifolds
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37
Engines characterised by provision of pumps driven at least for part of the time by exhaust
12
Control of the pumps
22
by varying the cross-section of exhaust passages or air passages
Applicants:
SCANIA CV AB [SE/SE]; 151 87 Södertälje, SE
Inventors:
GAWELL, Anders; SE
HJORTBORG, Daniel; SE
Agent:
WALLIN, Ulf; SE
Priority Data:
1651286-530.09.2016SE
Title (EN) MULTIPLE BANK EXHAUST SYSTEM COMPRISING REDUCTANT SUPPLY SYSTEM ARRANGED UPSTREAM OF A TURBINE
(FR) SYSTÈME D'ÉCHAPPEMENT À MULTIPLES RANGÉES COMPRENANT UN SYSTÈME D'APPORT D'AGENT RÉDUCTEUR AGENCÉ EN AMONT D'UNE TURBINE
Abstract:
(EN) The present disclosure relates to an exhaust system for an internal combustion engine (2), the exhaust system comprising: - a first exhaust conduit (4) leading from a first exhaust bank of the internal combustion engine to a first turbocharger turbine inlet (17, 117) arranged downstream of the first exhaust bank in the direction of travel of a first exhaust stream; - a second exhaust conduit (6) leading from a second exhaust bank of the internal combustion engine to a second turbocharger turbine inlet (17, 217) arranged downstream of the second exhaust bank in the direction of travel of a second exhaust stream; - an SCR catalyst (10) arranged downstream of the first turbocharger turbine inlet (15, 115) and/or second turbocharger turbine inlet (17, 217); and - a reductant supply system comprising a distributor pipe (12) and a reductant injector (14). The distributor pipe (12) is configured to fluidly connect the first exhaust conduit (4) to the second exhaust conduit (6) upstream of the first turbocharger turbine inlet (15, 115) and second turbocharger turbine inlet (17, 117), and the reductant injector (14) is configured to supply a reductant to the distributor pipe (12). The present disclosure further relates to a method of supplying reductant to such an exhaust system and a vehicle (1) comprising such an exhaust system.
(FR) La présente invention concerne un système d'échappement pour un moteur (2) à combustion interne, le système d'échappement comprenant : un premier conduit (4) d'échappement partant d'une première rangée d'orifices d'échappement du moteur à combustion interne en direction d'un premier orifice d'entrée (17, 117) de turbine de turbocompresseur, agencé en aval de la première rangée d'orifices d'échappement dans le sens de déplacement d'un premier flux d'échappement ; un second conduit (6) d'échappement partant d'une seconde rangée d'orifices d'échappement du moteur à combustion interne en direction d'un second orifice d'entrée (17, 217) de turbine de turbocompresseur, agencé en aval de la seconde rangée d'orifices d'échappement dans le sens de déplacement d'un second flux d'échappement ; un catalyseur (10) de réduction catalytique sélective, agencé en aval du premier orifice d'entrée (15, 115) de turbine de turbocompresseur et/ou du second orifice d'entrée (17, 217) de turbine de turbocompresseur ; et un système d'apport d'agent réducteur comprenant un tuyau de distribution (12) et un injecteur (14) d'agent réducteur. Le tuyau de distribution (12) est conçu pour relier fluidiquement le premier conduit (4) d'échappement au second conduit (6) d'échappement, en amont du premier orifice d'entrée (15, 115) de turbine de turbocompresseur et du second orifice d'entrée (17, 117) de turbine de turbocompresseur, et l'injecteur (14) d'agent réducteur est conçu pour fournir un agent réducteur au tuyau de distribution (12). La présente invention concerne en outre un procédé d'apport d'agent réducteur à un tel système d'échappement, et un véhicule (1) comprenant un tel système d'échappement.
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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, JP, 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: English (EN)
Filing Language: English (EN)