This paper presents experimental and modeling results related to the application of a novel material as a diesel particulate filter substrate. The material, trademarked as INCOFOAM® HighTemp, is a Ni-based superalloy foam. The material can be produced in sheet form with a large range of microstructure parameters. Thanks to the mechanical properties of the sheets, they can be flexibly shaped in various forms. The foam can be washcoated with active catalytic material to promote regeneration.The experimental testing covers flow and pressure drop behavior with air and exhaust gas, filtration efficiency measurements as function of particle size and regeneration rate measurements. The testing starts from mini-scale reactors and proceeds to real exhaust testing on the engine bench as well as vehicle tests with legislated driving cycles. Special emphasis is given to the characterization of the foam as a catalyst substrate. It is shown that the foam structure exhibits excellent mass-transport properties offering many possibilities for Precious Metal and catalyst volume saving.A mathematical model is applied to study and understand the filtration and pressure drop mechanisms, as well as surface reactions. The model is validated versus engine experiments. Moreover, CFD studies are also employed to optimize the macroscopic structure of the metal foam filter.The preliminary results show that the foam filter has a potential for reaching a filtration efficiency of the order of 90% with acceptable pressure drop. This can be accomplished by a proper macroscopic design of the filter, as well as careful selection of the microscopic pore size parameters. For the case of catalyst coated foams, the regeneration rates suggest a superior exploitation of the catalyst compared to conventional coated wall-flow filter concepts.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Design and Application of Catalyzed Metal Foam Particulate Filters


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Powertrain & Fluid Systems Conference and Exhibition ; 2006



    Publication date :

    2006-10-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Design and application of catalysed metal foam particulate filters

    Koltsakis,G.C. / Katsaounis,D.K. / Markomanolakis,I.A. et al. | Automotive engineering | 2006


    Performance of radial-type metal foam diesel particulate filters

    Lee, J. M. / Sung, N. W. / Cho, G. B. et al. | Springer Verlag | 2010


    Performance of radial-type metal foam diesel particulate filters

    Lee, J. M. / Sung, N. W. / Cho, G. B. et al. | British Library Online Contents | 2010


    Performance of radial-type metal foam diesel particulate filters

    Lee, J. M. / Sung, N. W. / Cho, G. B. et al. | Online Contents | 2010


    Application of Catalyzed Gasoline Particulate Filters to GDI Vehicles

    Richter, Joerg Michael / Wong, Ka-Fai / Klingmann, Raoul et al. | SAE Technical Papers | 2012