EP 2556227 A1 20130213 - DEVICE AND METHOD FOR DETECTING A STATE OF A SENSOR IN THE EXHAUST SYSTEM OF A MOTOR VEHICLE
Title (en)
DEVICE AND METHOD FOR DETECTING A STATE OF A SENSOR IN THE EXHAUST SYSTEM OF A MOTOR VEHICLE
Title (de)
VORRICHTUNG UND VERFAHREN ZUR ERKENNUNG DES STATUS EINES SENSORS IM ABGASSYSTEM EINES MOTORFAHRZEUGS
Title (fr)
DISPOSITIF ET PROCEDE DE DETECTION D'ETAT DE CAPTEUR DANS SYSTEME D'ECHAPPEMENT DE VEHICULE AUTOMOBILE
Publication
Application
Priority
- SE 1050343 A 20100408
- SE 2011050360 W 20110330
Abstract (en)
[origin: WO2011126429A1] The invention relates to a method for determining a state of at least one sensor (240; 270) of a motor vehicle (100; 112) which has an engine (230) and an exhaust system with a catalyst (260). The method comprises the steps of: - altering a NOx gas concentration downstream of the engine (230) by controlling operation of the engine (230) in a predetermined way; - determining a difference in a first NOx gas concentration upstream of said catalyst (260); - determining a difference in a second NOx gas concentration downstream of said catalyst; and - determining a state of said at least one sensor (240; 270) on the basis of said difference in the first NOx gas concentration and said difference in the second NOx gas concentration. The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to a device for determining a state of a sensor of a motor vehicle, and to a motor vehicle which is equipped with the device.
IPC 8 full level
F01N 11/00 (2006.01); F02D 41/14 (2006.01)
CPC (source: EP SE)
F01N 3/208 (2013.01 - EP); F01N 11/00 (2013.01 - SE); F02D 41/0235 (2013.01 - SE); F02D 41/1461 (2013.01 - SE); F02D 41/1463 (2013.01 - SE); F02D 41/222 (2013.01 - EP); F01N 2560/026 (2013.01 - EP SE); F01N 2560/14 (2013.01 - EP SE); F01N 2570/14 (2013.01 - SE); F01N 2610/02 (2013.01 - EP); F01N 2900/1402 (2013.01 - EP); F02D 41/146 (2013.01 - EP); Y02A 50/20 (2018.01 - EP); Y02T 10/12 (2013.01 - EP); Y02T 10/40 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011126429 A1 20111013; BR 112012025542 A2 20200818; EP 2556227 A1 20130213; EP 2556227 A4 20180321; SE 1050343 A1 20111009; SE 535748 C2 20121204
DOCDB simple family (application)
SE 2011050360 W 20110330; BR 112012025542 A 20110330; EP 11766236 A 20110330; SE 1050343 A 20100408