Abgasüberwachungsvorrichtung und Abgasüberwachungsverfahren

Details

Veröffentlichungs-Nr.

EP4796767

Anmeldetag

18. Februar 2026

Veröffentlichung

26. August 2026

Rechtsraum

EP

IPC

F01N3/20, F01N9/00, F01N11/00

Abstract

An exhaust monitoring apparatus includes an exhaust purification device that removes nitrogen oxides, and a nitrogen oxide sensor that measures a concentration of nitrogen oxides contained in exhaust gas that has passed through the exhaust purification device. The exhaust monitoring apparatus acquires upstream and downstream concentrations. The upstream concentration is a concentration of nitrogen oxides contained in exhaust gas flowing into the exhaust purification device. The downstream concentration is an output value of the sensor. When the downstream concentration is greater than an upper limit value calculated from the upstream concentration, the exhaust monitoring apparatus outputs a processed concentration obtained by replacing the downstream concentration with the upper limit value, as a value indicating the concentration of the nitrogen oxides contained in the exhaust gas that has passed through the exhaust purification device.

Anmelder

Firma

Toyota Jidosha Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete