Abgasnachbehandlungssystem, Motorsystem und Verfahren zur Steuerung des Betriebs davon

Details

Veröffentlichungs-Nr.

EP4796765

Anmeldetag

25. Februar 2025

Veröffentlichung

26. August 2026

Rechtsraum

EP

Abstract

An engine system (10) and an exhaust aftertreatment system (20) arranged in an exhaust flow path (26) of a hydrogen combustion engine (15), comprising: a selective catalytic reduction device (40) configured to reduce nitrogen oxides; a hydrogen and ammonia slip catalyst device (50) arranged downstream of the SCR device (40) in the exhaust flow path (26), the HASC device (50) comprising an oxidation catalyst coating (52) and a metal-zeolite coating (53), a loading of the metal-zeolite coating (53) decreasing along a direction of flow (D); and a particulate filter (60) arranged downstream of the HASC device. In response to determining that the temperature of the HASC device is below a threshold, the engine system (10) is operated with a relatively high percentage of water in the engine out exhaust gases, whereby water is adsorbed on the metal-zeolite coating and a quick temperature rise is achieved.

Anmelder

Firma

Volvo Truck Corporation

Land

🇸🇪 Schweden