This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Pressure Drop and Soot Accumulation Characteristics through Diesel Particulate Filters Considering Various Soot and Ash Distribution Types
Technical Paper
2017-01-0959
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Although diesel engines offer higher thermal efficiency and lower fuel consumption, larger amounts of Particulate Matters (PM) are emitted in comparison with gasoline engines. The Diesel Particulate Filters (DPF) have proved one of the most promising technologies due to the “particle number” emissions regulations. In this study, the Computational Fluid Dynamics (CFD) multi-channel model of DPF was built properly by utilizing AVL-Fire software code to evaluate the pressure drop and soot accumulation characteristics of DPF. The main objective of this paper was to investigate the effects of soot (capacity and deposit forms) and ash (capacity and distribution factors) interaction on DPF pressure drop and soot accumulation, as well as the effects of DPF boundary conditions (inlet mass flow rate and inlet temperature) on pressure drop. The Asymmetric Cell Technology (ACT) of DPF was proposed to evaluate the effects of the inlet to outlet width ratios on pressure drops and soot regeneration, and optimize the filter structure in practical applications. The results showed that the pressure drop sensitivity increases with the increased DPF inlet mass flow, inlet temperature, soot loading and ash accumulation, and the pressure drop change is not linear relationship with inlet temperature. The PM distribution is non-uniform and both ends of DPF contain a higher soot loading than the middle part. The “Linear decrease” soot pattern has a lower pressure loss and faster regeneration rate. The ash deposited on inlet channel walls results in larger pressure drops and prevents soot accumulation in the pores dramatically compared with ash deposited as plug. The ACT design filter can reduce the pressure drop, improve the soot accumulation performance, and accelerate regeneration rate at high soot and ash loads.
Recommended Content
Authors
Topic
Citation
Zhao, C., Zhu, Y., and Huang, S., "Pressure Drop and Soot Accumulation Characteristics through Diesel Particulate Filters Considering Various Soot and Ash Distribution Types," SAE Technical Paper 2017-01-0959, 2017, https://doi.org/10.4271/2017-01-0959.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
[Unnamed Dataset 1] | ||
[Unnamed Dataset 2] |
Also In
References
- Fayyazbakhsh, A. and Pirouzfar, V., “Investigating the Influence of Additives-fuel On Diesel Engine Performance and Emissions: Analytical modeling and experimental validation”. Fuel, 2016, 171(10): 167-177, doi: 10.1016/j.fuel.2015.12.028.
- Basu, S., Henrichsen, M., Tandon, P., He, S. et al., "Filtration Efficiency and Pressure Drop Performance of Ceramic Partial Wall Flow Diesel Particulate Filters," SAE Int. J. Fuels Lubr. 6(3):877-893, 2013, doi:10.4271/2013-01-9072.
- Sappok, A. and Wong, V., "Ash Effects on Diesel Particulate Filter Pressure Drop Sensitivity to Soot and Implications for Regeneration Frequency and DPF Control," SAE Int. J. Fuels Lubr. 3(1):380-396, 2010, doi:10.4271/2010-01-0811.
- Wurzenberger, J. and Kutschi, S., "Advanced Simulation Technologies for Diesel Particulate Filters, A Fundamental Study on Asymmetric Channel Geometries," SAE Technical Paper 2007-01-1137, 2007, doi:10.4271/2007-01-1137.
- Yang, S, C., Deng, C., and Gao, Y, F., “Diesel Particulate Filter Design Simulation: A Review,” Advances in Mechanical Engineering. 8(3):1-14, 2016, doi: 10.1177/1687814016637328.
- Adler, J., “Ceramic diesel particulate filters”. International Journal of Applied Ceramic Technology / Functional Ceramics, 2005, 2(6): 429-439, doi: 10.1111/j.1744-7402.2005.02044.x.
- AVL Fire. Diesel Particulate Filter Model.
- Zhang, W, F., “Computational and Experimental Investigation of Soot Load and Regeneration Characteristics in Diesel Particulate Filters,” Tianjin: Tianjin University, 2011.
- Sappok, A. and Wong, V., “Lubricant-Derived Ash Properties and Their Effects on Diesel Particulate Filter Pressure-Drop Performance”. Journal of Engineering for Gas Turbines and Power. 133(3):03280-03292, 2011, doi: 10.1115/1.4001944.
- Tsuneyoshi, K., Takagi, O., and Yamamoto, K., "Effects of Washcoat on Initial PM Filtration Efficiency and Pressure Drop in SiC DPF," SAE Technical Paper 2011-01-0817, 2011, doi:10.4271/2011-01-0817.
- Hou, P, H., “Numeral Simulation for Flow and Regeneration Character of Diesel Particulate Filter,” Tianjin: Tianjin University, 2014.
- Ogyu, K., Ohno, K., Hong, S., and Komori, T., "Ash Storage Capacity Enhancement of Diesel Particulate Filter," SAE Technical Paper 2004-01-0949, 2004, doi:10.4271/2004-01-0949.
- Ogyu, K., Oya, T., Ohno, K., and Konstandopoulos, A., "Improving of the Filtration and Regeneration Performance by the Sic-DPF with the Layer Coating of PM Oxidation Catalyst," SAE Technical Paper 2008-01-0621, 2008, doi:10.4271/2008-01-0621.
- Zhang, X., Tennison, P., and Yi, J., "3-D Numerical Study of Fluid Flow and Pressure Loss Characteristics through a DPF with Asymmetrical Channel size," SAE Technical Paper 2011-01-0818, 2011, doi:10.4271/2011-01-0818.
- Zhao, C., Bai, M., Yang, J., Shang, F. et al., "Pressure Drop Characteristics Through DPF with Various Inlet to Outlet Channel Width Ratios," SAE Technical Paper 2015-01-1019, 2015, doi:10.4271/2015-01-1019.
- Eggenschwiler, P, D. and Liati, A., “Soot and Ash Layer Characteristics in Ceramic Diesel Particulate Filters”. Advances in Science and Technology. 65:225-231, 2010, doi: 10.4028/www.scientific.net/AST.65.225.
- Bensaid, S., Marchisio, D, L., Russo, N. et al. “Experimental Investigation of Soot Deposition in Diesel Particulate Filters”. Catalysis Today, 2009, 147: 295-300, doi: 10.1016./j.cattod.2009.07.039.
- Bensaid, S., Marchisio, D, L., and Fino, D., “Numerical Simulation of Soot Filtration and Combustion within Diesel Particulate Filters”. Chemical Engineering Science, 2010, 65(1): 357-363, doi: 10.1016/j.ces.2009.06.051.
- Wu, G., Kuznetsov, A., and Jasper J., “Distribution Characteristics of Exhaust Gases and Soot Particles in A Wall-flow Ceramics Filter”. Journal of Aerosol Science, 2011, 42(7): 447-461, doi: 10.1016/j.jaerosci.2011.04.003.
- Lupse, J., Campolo, M., and Soldati, A., “Modeling Soot Deposition and Monolith Regeneration for Optimal Design of Automotive DPFs”. Chemical Engineering Science, 2016, 151: 36-54, doi: 10.1016/j.ces.2016.05.008.
- Basu, S. and Currier, N., "Analytic Solution for the Flow Distribution and Pressure Drop of Ceramic Partially-Plugged Wall Flow Diesel Particulate Filters," SAE Int. J. Engines 8(4):1478-1491, 2015, doi:10.4271/2015-01-1056.