Modeling Catalytic Regeneration of Diesel Particulate Filters, Taking into Account Adsorbed Hydrocarbon Oxidation

Initiation of the regeneration of porous ceramic diesel particulate filters at low exhaust gas temperatures and the subsequent control of the soot oxidation rate is necessary in order to allow a wide applicability of filter systems in diesel-powered vehicles. The use of catalysts in this respect, in particular catalytic fuel additives, has been proven to be successful, leading to a minimization of the system's cost and additional fuel consumption. Better understanding and modeling of the catalytic activity at low temperatures necessitates that one takes into account the oxidation not only of dry particulate but also of the volatile hydrocarbons adsorbed on the particulate. In this paper, the oxidation of the hydrocarbons adsorbed on the particulate is modeled, to allow a better understanding of the filter regeneration behavior at very low temperatures (150−300 °C). A simplified reaction scheme and tunable kinetics are employed in the description of adsorbed hydrocarbon oxidation. The mechanism is incorpor...

[1]  J. Lemaire,et al.  QUASI-CONTINUOUS PARTICLE TRAP REGENERATION BY CERIUM-ADDITIVES , 1995 .

[2]  Max R. Montierth.  Fuel Additive Effect upon Diesel Particulate Filters , 1984 .

[3]  Grigorios C. Koltsakis,et al.  CATALYTIC AUTOMOTIVE EXHAUST AFTERTREATMENT , 1997 .

[4]  Grigorios C. Koltsakis,et al.  Modeling thermal regeneration of wall‐flow diesel particulate traps , 1996 .

[5]  F. Moser,et al.  ZUR PARTIKELEMISSION VON NUTZFAHRZEUG-DIESELMOTOREN , 1990 .

[6]  B. Wiedemann,et al.  Vehicular Experience with Additives for Regeneration of Ceramic Diesel Filters , 1985 .

[7]  Charles N. Satterfield,et al.  Heterogeneous catalysis in practice , 1980 .

[8]  John H. Johnson,et al.  A Study of the Regeneration Process in Diesel Particulate Traps Using a Copper Fuel Additive , 1996 .

[9]  Werner Engeler,et al.  Regeneration of Particulate Filters at Low Temperatures , 1983 .

[10]  Anastassios M. Stamatelos,et al.  Modeling Catalytic Regeneration of Wall-Flow Particulate Filters , 1996 .

[11]  A Computer Heat Transfer and Hydrocarbon Adsorption Model for Predicting Diesel Particulate Emissions in Dilution Tunnels , 1982 .

[12]  Grigorios C. Koltsakis,et al.  Modes of Catalytic Regeneration in Diesel Particulate Filters , 1997 .

[13]  Werner Engeler,et al.  Application of Particulate Traps and Fuel Additives for Reduction of Exhaust Emissions , 1984 .

[14]  Anastassios M. Stamatelos,et al.  Computer Aided Engineering in the Design of Catalytically Assisted Trap Systems , 1997 .