Engine system comprising a hydrogen combustion engine

An engine system comprising a hydrogen combustion engine and an exhaust aftertreatment system configured to reduce emissions of the engine exhausts, wherein the EATS comprises:

• an exhaust gas inlet for receiving engine exhaust from the hydrogen combustion engine;
• a plurality of emission reducing modules arranged downstream of the exhaust gas inlet and being configured to reduce emissions of the engine exhausts, the plurality of emission reducing modules comprising at least:
• a first emission reducing module with a porous substrate having an inlet face and an outlet face, the porous substrate comprising inlet channels extending from the inlet face, and outlet channels extending from the outlet face;
• the inlet channels and the outlet channels being separated by a plurality of filter walls having a porous structure;
• the inlet channels of the porous substrate being loaded with a powder coating configured to filter particles from the engine exhaust, and the porous structure of the filter walls and/or the outlet channels of the porous substrate being loaded with a selective catalyst reduction, SCR, catalyst coating;
• a second emission reducing module being a selective catalyst reduction, SCR, catalyst unit;
• wherein the first emission reducing module is arranged as the first occurring emission reducing module of the EATS downstream of the exhaust gas inlet,
• wherein the EATS is free of any oxidation catalyst arranged downstream of the exhaust gas inlet and upstream of the first and second emission reducing modules.