Exhaust aftertreatment system for hydrogen in combustion engines

Hydrogen have recently become a potential complement to electrification in order to create a zero-emission fleet of heavy trucks. The hydrogen could either be used in fuel cells or in conventional combustion engines. For the latter one of the challenges would be to tackle the differences in the exhaust stream.

The exhaust will typically be oxygen rich, similar to diesel, but will have almost no CO2, CO or HC but will contain large amounts of water. In addition there will be NOX and potentially even H2 and low but significant amounts particles.

This prestudy focus on understanding the demands that will be put on the future exhaust aftertreatment systems for hydrogen fuelled heavy trucks. With a special focus on the particulate emissions and their abatement as well as the impact of water on the performance and durability of the exhaust system. An important task is also to identify potential partners to be included in a future larger project in the same area