This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Study on Filter Substrate Structure for Lower Backpressure and Higher Regeneration Performance
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2006 by SAE International in United States
Annotation ability available
The trade-off between NOx and particulate matter (PM) has been a technological challenge with respect to diesel engine emissions. However, the practical use of diesel particulate filters (DPF) has made diesel emission control possible, in which NOx emissions are reduced through engine control and nearly all emitted PM is completely removed by DPF from diesel exhaust emissions. This has helped to contribute to laying the foundation for pursuing of the high theoretical thermal efficiency of diesel engines. However, it is also a fact that such emission controls have resulted in considerable impairments on the original and greatest advantages of diesel engines. This includes fuel penalties with accompanying increases in fuel consumption caused by pressure losses due to the attachment of the DPF itself and the accumulation of PM in the DPF, as well as fuel losses that occur when fuel is used to regenerate collected PM. When fuel consumption penalties resulting from the installation of DPFs are examined for current DPF systems, the fuel loss caused by the forced regeneration gives a higher contribution than that caused by the pressure losses in current DPF systems. Especially, C-DPF systems have a higher proportion of the fuel loss by the forced regeneration than FBC system. Through the fundamental study on batch PM oxidation test, it was found that the PM regeneration activity was more due to differences in PM/catalyst contact rather than the activation energy of the catalyst based on the chemical reaction kinetics of the reaction of PM oxidation. The porous material which collects PM within the filter wall, not surface of the wall, made it possible to increase the oxidation rate of collected PM more than five times current levels by improving PM/catalyst contact. At the same time, it was found a possibility to achieve lower pressure loss by the deep-bed filtration.
CitationOgyu, K., Oya, T., Kasuga, T., and Ohno, K., "Study on Filter Substrate Structure for Lower Backpressure and Higher Regeneration Performance," SAE Technical Paper 2006-01-1526, 2006, https://doi.org/10.4271/2006-01-1526.
- Salvat et al. “Passenger Car Serial Application of a Particulate Filter System on a Common Rail Direct Injection Engine” SAE Paper 2000-01-0473
- Ido T. et al. “Study on the Filter Structure of SiC-DPF with Gas Permeability for Emission control” SAE Paper 2005-01-0578
- Oya T. et al. “Effect of PM/Catalyst Contact on PM Combustion rate in Current DPF System” JSAE Paper 20056058
- Blanchard G. et al. “Ceria-Based Fuel-Borne Catalysts for Series Diesel Particulate Filter Regeneration” SAE Paper 2003-01-0378
- Lee Jin-ha et al. “Control of Diesel Catalyzed Particulate Filter System I (The CPF System Influence Assessment According to a Regeneration Condition)” SAE Paper 2005-01-0661
- Pfeifer M. et al. “The Second Generation of Catalyzed Diesel Particulate Filter Systems for Passenger Cars - Particulate Filters with Integrated Oxidation Catalyst Function -” SAE Paper 2005-01-1756
- Campenon Thierry et al. “Improvement and Simplification of DPF System Using a Ceria-based Fuel-borne Catalyst for Diesel Particulate Filter Regeneration in Serial Applications” SAE Paper 2004-01-0071
- Bonnefoy F. et al. “A Comparative Study of Carbon Black and Diesel Soot Reactivity in the Temperature Range 500 - 600 °C - Effect of Additives” Carbon 32 7 1333 1340 1994
- Lahaye J. et al. “Influence of Cerium Oxide on the Formation and Oxidation of Soot” COMBUSTION AND FLAME 104 199 207 1996
- Stanmore B. et al. “The Ignition and Combustion of Cerium Doped Diesel Soot” SAE Paper 1999-01-0115
- Konstandopoulos A.G. et al. “Catalytic Filter Systems with Direct and Indirect Soot Oxidation Activity” SAE Paper 2005-01-0670
- Konstandopoulos A.G. et al. “Progress in Diesel Particulate Filter Simulation” SAE Paper 2005-01-0946
- Konstandopoulos A.G. et al. “Fundamental Studies of Diesel Particulate Filters: Transient Loading, Regeneration and Aging” SAE Paper 2000-01-1016
- Konstandopoulos A.G. et al. “Validation of a Model and Development of a Simulator for Predicting the Pressure Drop of Diesel Particulate Filters” SAE Paper 2001-01-0911
- Konstandopoulos A.G. et al. “Microstructual Properties of Soot Deposits in Diesel Particulate Traps” SAE Paper 2002-01-1015
- Konstandopoulos A.G. et al. “Flow Resistance Descriptors for Diesel Particulate Filters: Definitions, Measurements and Testing” SAE Paper 2003-01-0846