Anomaliendiagnosevorrichtung für Nox-Speicherung-Reduktionskatalysator

Details

Veröffentlichungs-Nr.

EP3124763

Aktenzeichen

EP16181494

Anmeldetag

27. Juli 2016

Veröffentlichung

12. Dezember 2018

Erteilung

12. Dezember 2018

Rechtsraum

EP

IPC

F01N3/08F02D41/02F01N13/00F01N11/00

Abstract

An apparatus according to the present invention is adapted to calculate an NO X storage rate defined as the rate of the quantity of NO X stored into the NSR catalyst (5) to the quantity of NO X flowing into the NSR catalyst (5), based on quantity of NO X flowing into the NSR catalyst (5) and the quantity of NO X flowing out of the NSR catalyst (5) in a state in which the amount of NO X stored in the NSR catalyst (5) is equal to or larger than the breakthrough start amount of a criterion catalyst and the flow rate of exhaust gas flowing through the NSR catalyst (5) is equal to or higher than a predetermined lower limit flow rate. The apparatus diagnoses the NSR catalyst (5) as normal if the NO X storage rate thus calculated is equal to or higher than a predetermined threshold and as abnormal if the NO X storage rate is lower than the predetermined threshold.

Anmelder

Firmen

TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Jidosha Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete