The members of W2 have attended the 9th International Congress on Combustion Engines in Lublin on 27-28 of September 2021. They attended the conference with the paper entitled „Ammonia CI engine aftertreatment systems design and flow simulation”. This paper is focused on the design and flow simulation of the ammonia CI engine aftertreatment as well as the 1D model of the engine.


Investigation of exhaust emissions and ammonia flow behaviour in the exhaust system incorporating with Selective Catalytic Reduction (SCR) unit is discussed. An aftertreatment system is designed to work without additional urea injection. This study is focused on obtaining optimal parameters for catalysis. Its effectiveness is considered as a function of basic parameters of exhaust gases mixture and SCR material characteristics. A 3D geometry of SCR with porous volume has been simulated using Ansys Fluent. Moreover, a 1D model of ammonia dual-fuel CI engine has been obtained. Results were focused on obtaining local temperature, velocity, and exhaust gases composition to predict optimal probes placement, pipes insulation parameters, and characteristic dimensions.

Keywords: Ammonia, SCR, Compression Ignition Engine, Test rig, Emissions

Poster sensation

The poster of the paper has been presented at the conference by PhD students Ebrahim Nadimi and Kacper Kuta as well as Prof. Grzegorz Przybyła and Prof. Zbigniew Żmudka.