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Energy Efficiency Analysis of Monolith and Pellet Emission Control Systems in Unidirectional and Reverse-Flow Designs
ISSN: 1946-3936, e-ISSN: 1946-3944
Published September 13, 2009 by Consiglio Nazionale delle Ricerche in Italy
Citation: ALGIERI, A., AMELIO, M., BOVA, S., and MORRONE, P., "Energy Efficiency Analysis of Monolith and Pellet Emission Control Systems in Unidirectional and Reverse-Flow Designs," SAE Int. J. Engines 2(2):684-693, 2010, https://doi.org/10.4271/2009-24-0155.
The work aims at analysing the energetic performances of monolith and pellet emission control systems using unidirectional and reverse-flow design (passive and active flow control respectively). To this purpose a one-dimensional transient model has been developed and the cooling process of different system configurations has been studied. The influence of the engine operating conditions on the system performances has been analysed and the fuel saving capability of the several arrangements has been investigated. The analysis showed that the system with active reverse flow and pellet packed bed design presents higher heat retention capability. Moreover, the numerical model put in evidence the large influence of the exhaust gas temperature on the energy efficiency of the emission control systems and the significant effect of unburned hydrocarbons concentration.
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