Hydrogen Combustion Engines – Chances and Challenges on the Way Towards a Decarbonized Mobility

Abstract

On the way towards a decarbonized mobility, hydrogen combustion engines can particularly contribute to applications for heavy-duty and long-haul routes. Using clean hydrogen as fuel results in formation of nitrogen oxides as quasi-exclusive pollutant emissions, which can be minimized by combining motor-related measures with an emission control system in the exhaust tailpipe. This review provides an overview on the impact of various engine operation conditions on the emissions of a hydrogen combustion engine and summarizes state-of-the-art and future concepts for an efficient exhaust gas after-treatment.