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1. (WO2017138873) METHOD AND SYSTEM FOR DIAGNOSING EXHAUST SENSORS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/138873 International Application No.: PCT/SE2017/050123
Publication Date: 17.08.2017 International Filing Date: 09.02.2017
IPC:
F01N 9/00 (2006.01) ,F01N 3/20 (2006.01) ,F01N 11/00 (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
9
Electrical control of exhaust gas treating apparatus
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
11
Monitoring or diagnostic devices for exhaust-gas treatment apparatus
Applicants:
SCANIA CV AB [SE/SE]; 151 87 Södertälje, SE
Inventors:
LUNDSTRÖM, Mikael; SE
Agent:
GARDEMARK, Niklas; SE
Priority Data:
1650164-510.02.2016SE
Title (EN) METHOD AND SYSTEM FOR DIAGNOSING EXHAUST SENSORS
(FR) PROCÉDÉ ET SYSTÈME POUR DIAGNOSTIQUER DES CAPTEURS D'ÉCHAPPEMENT
Abstract:
(EN) The invention relates to a method for diagnosing exhaust sensors, where at least one substance (NOx) resulting from combustion is reduced by supplying an additive. A first sensor subjected to the exhaust gas stream is intended to measure an occurrence of said substance (NOx) upstream said supply of additive, and a second sensor (208) subjected to the exhaust gas stream is intended to measure an occurrence of said substance (NOx) downstream said supply of additive. The method includes: - determining whether the locations of said first (207) and second sensor are reversed, the determination comprising: - determining if a second measurement value of said second sensor (208) exceeds a corresponding first measurement value of said first sensor (207) at least to a first extent, and - when said second measurement value exceeds said corresponding first measurement value at least to said first extent, determining that the locations of said first (207) and second (208) sensor are reversed, said measurement values are determined when a supply of additive is set to obtain at least a first reduction of said at least one substance (NOx) to be reduced.
(FR) L'invention concerne un procédé de diagnostic de capteurs d'échappement, dans lequel procédé au moins une substance (NOx) résultant de la combustion est réduite par délivrance d'un additif. Un premier capteur soumis au courant de gaz d'échappement est conçu pour mesurer une présence de ladite substance (NOx) en amont de ladite délivrance d'additif et un second capteur (208) soumis au courant de gaz d'échappement est conçu pour mesurer une présence de ladite substance (NOx) en aval de ladite délivrance d'additif. Le procédé met en œuvre : - la détermination du fait de savoir si des emplacements desdits premier (207) et second capteurs sont inversés, la détermination comprenant : - la détermination du fait de savoir si une seconde valeur de mesure dudit second capteur (208) dépasse une première valeur de mesure correspondante du premier capteur (207) au moins d'une première ampleur, et - quand ladite seconde valeur de mesure dépasse ladite première valeur de mesure correspondante au moins de ladite première ampleur, la détermination du fait que les emplacements desdits premier (207) et second (208) capteurs sont inversés, lesdites valeurs de mesure étant déterminées quand une délivrance d'additif est établie pour obtenir au moins une première réduction de ladite ou desdites substances (NOx) à réduire.
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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, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)
Also published as:
KR1020180102679CN108603433EP3414434BR112018014647