EP 2151554 B1 20100714 - Deterioration determination device and method for exhaust emission reduction device
Title (en)
Deterioration determination device and method for exhaust emission reduction device
Title (de)
Alterungsbestimmungsvorrichtung und Verfahren für Abgasreinigungsvorrichtung
Title (fr)
Dispositif de détermination de la détérioration et procédé pour dispositif de réduction des émissions d'échappement
Publication
Application
Priority
- JP 2008201476 A 20080805
- JP 2009043423 A 20090226
Abstract (en)
[origin: EP2151554A1] A deterioration determination device for an exhaust emission reduction device which is capable of accurately and rapidly determining deterioration of a NOx purifying catalyst. An ECU executes high NOx concentration control in deterioration determination, calculates a NOx supply (sumPreNOx) amount based on upstream NOx concentration detected during execution of the high NOx concentration control, calculates a NOx slip (sumPostNOx) amount based on downstream NOx concentration detected during execution of the high NOx concentration control, and determines the NOx purifying catalyst to be deteriorated when the condition of the NOx slip amount exceeds a reference value (NOxJUD) is satisfied, in a case where the NOx supply amount exceeds a predetermined threshold (NOxREF).
IPC 8 full level
F01N 3/08 (2006.01)
CPC (source: EP US)
F01N 3/0842 (2013.01 - EP US); F01N 3/0871 (2013.01 - EP US); F01N 13/0093 (2014.06 - EP US); F01N 2560/026 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2151554 A1 20100210; EP 2151554 B1 20100714; AT E474131 T1 20100715; DE 602009000061 D1 20100826; JP 2010059956 A 20100318; JP 4576464 B2 20101110; US 2010031634 A1 20100211
DOCDB simple family (application)
EP 09166320 A 20090724; AT 09166320 T 20090724; DE 602009000061 T 20090724; JP 2009043423 A 20090226; US 50199409 A 20090713