Abgasreinigungsvorrichtung für einen Verbrennungsmotor

Details

Veröffentlichungs-Nr.

EP3369904

Aktenzeichen

EP18159718

Anmeldetag

2. März 2018

Veröffentlichung

9. Oktober 2019

Erteilung

9. Oktober 2019

Rechtsraum

EP

IPC

F01N3/20F01N9/00

Abstract

In order to supply a reducing agent to an NOx catalyst in an appropriate manner when the temperature of the NOx catalyst is high, in cases where the temperature of the NOx catalyst is equal to or higher than a predetermined temperature at which ammonia is oxidized, and in cases where an NOx reduction rate in the NOx catalyst is smaller than a predetermined lower limit reduction rate, when the addition of the additive agent is carried out at least twice by changing an equivalent ratio with respect to an amount of NOx flowing into the NOx catalyst, the equivalent ratio in equivalent ratio control is made larger in the case where an amount of change of an amount of reduction of NOx accompanying a change of the equivalent ratio is larger than an amount of change of an amount of oxidation of ammonia accompanying the change of the equivalent ratio, than in the case where it is smaller than that.

Anmelder

Firma

TOYOTA JIDOSHA KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete