Modelling of a Lean NOx-Trap system with NO/NO₂ differentiation and sulfur poisoning

Comprehensive modeling study analyzing the insights of the NO–NO2 conversion process in current diesel engines

“…Nowadays, due to this substantial increase of the NO 2 emissions [14], the interest for this phenomenon is high and multiple studies have been developed focusing on exhaust-out [15][16][17][18][19][20][21][22][23] and engine-out emissions [24][25][26][27][28][29][30][31][32]. Concerning this latter group the main influence comes from the fuel's characteristics (i.e: blends and/or composition) and the influence of the combustion process.…”

Reduced-Order Models for a LNT-SCR Diesel After-treatment Architecture with NO/NO2 Differentiation

“…Many studies have been completed to identify and model mechanisms and kinetics of NO x trap catalysts during both lean and rich operation, see [6], [7], [8], [11], [12], [13], [14] which are presented in the sequel.…”