TY - JOUR
TI - Numerical investigation on the energetic performances of conventional and pellet aftertreatment systems in flow-through and reverse-flow designs
AU - Morrone Pietropaolo
AU - Algieri Angelo
JN - Thermal Science
PY - 2011
VL - 15
IS - 4
SP - 1049
EP - 1064
PT - Article
AB - The aim of the paper is the analysis of the energetic performances of  structured and pelletized aftertreatment systems in flow-through and  reverse-flow designs (passive and active flow control respectively) for  diesel internal combustion engines. To this purpose, the influence of the  engine operating conditions on the system performances has been investigated  adopting a one-dimensional time-dependent model. Specifically, the thermal  behaviour and the fuel saving capability of several arrangements have been  characterized. The analysis has shown that the active emission control system  with pelletized design guarantees higher heat retention capability.  Furthermore, the numerical model has revealed the significant influence of  the solid and exhaust gas temperature on the energy efficiency of the  aftertreatment systems and the large effect of exhaust mass flow rate and  unburned hydrocarbons concentration.