A Quasi Two Dimensional Model of Transport Phenomena in Diesel Particulate Filters - The Effects of Particle and Wall Pore Diameter on the Pressure Drop -

2015 ◽  
Author(s):  
Toru Uenishi ◽  
Eijiro Tanaka ◽  
Genki Shigeno ◽  
Takao Fukuma ◽  
Jin Kusaka ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Pore Diameter ◽  
Transport Phenomena ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Two Dimensional Model

Performance trends in wall-flow diesel particulate filters: Comparative analysis of their filtration efficiency and pressure drop

2020 ◽  
Vol 260 ◽  
pp. 120863 ◽  
Author(s):  
M. Pilar Orihuela ◽  
Ricardo Chacartegui ◽  
Aurora Gómez-Martín ◽  
Joaquín Ramírez-Rico ◽  
José A. Becerra Villanueva
Keyword(s):  
Comparative Analysis ◽  
Pressure Drop ◽  
Filtration Efficiency ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Performance Trends ◽  
Wall Flow

Experimental investigation of the pressure drop in porous ceramic diesel particulate filters

2002 ◽  
Vol 216 (9) ◽  
pp. 773-784 ◽  
Author(s):  
G A Stratakis ◽  
D L Psarianos ◽  
A M Stamatelos
Keyword(s):  
Pressure Drop ◽  
Porous Ceramic ◽  
Computer Calculation ◽  
Fuel Additive ◽  
Complex Flow ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Experimental Apparatus ◽  
Soot Loading

Understanding of the mechanisms that affect flow and pressure drop in porous ceramic diesel particulate filters is important in the design optimization of this class of diesel exhaust after- treatment systems. Furthermore, determination of the parameters involved in the calculation of pressure drop as a function of collected soot mass is important for successful filter loading and regeneration modelling. This paper presents the results of an experimental analysis of pressure drop as a function of the geometric and operating parameters of cordierite and SiC diesel filters. Single- cell filters from cordierite and silicon carbide were prepared to single out any effects from the complex flow processes that take place in a full-sized filter. The product of soot layer permeability and density was experimentally determined by employing a specially designed experimental apparatus. The calculation was supported by a simple computer calculation that is also presented in this paper. The distribution of soot loading inside the channels of a full-sized filter, in various loaded and partially regenerated conditions, was assessed by connecting the apparatus to discharge through selected channels of the filter. The results are shown to improve understanding of the effects of partial regeneration and fuel additive residuals on filter back pressure and flow and soot loading distribution.

scholarly journals Preliminary study on the performance of biomorphic silicon carbide as substrate for diesel particulate filters

2018 ◽  
Vol 22 (5) ◽  
pp. 2053-2064
Author(s):  
Maria Orihuela ◽  
Aurora Gomez-Martin ◽  
Jose Becerra-Villanueva ◽  
Javier Serrano-Reyes ◽  
Francisco Jimenez-Espadafor ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Pressure Drop ◽  
Space Velocity ◽  
Diesel Particle Filter ◽  
Diesel Particulate ◽  
Pressure Drops ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Hierarchical Porous ◽  
Porous Microstructure

This paper presents the results of a preliminary experimental study to assess the performance of biomorphic silicon carbide when used for the abatement of soot particles in the exhaust of Diesel engines. Given its optimal thermal and mechanical properties, silicon carbide is one of the most popular substrates in commercial diesel particulate filters. Biomorphic silicon carbide is known for having, be-sides, a hierarchical porous microstructure and the possibility of tailoring that microstructure through the selection of a suitable wood precursor. An experimental rig was designed and built to be integrated within an engine test bench that allowed to characterizing small lab-scale biomorphic silicon carbide filter samples. A particle counter was used to measure the particles distribution before and after the samples, while a differential pressure sensor was used to measure their pressure drop during the soot loading process. The experimental campaign yielded promising results: for the flow rate conditions that the measuring devices imposed (1 litre per minute; space velocity = 42,000 L/h), the samples showed initial efficiencies above 80%, pressure drops below 20 mbar, and a low increase in the pressure drop with the soot load which allows to reach almost 100% efficiency with an increase in pressure drop lower than 15%, when the soot load is still less than 0.01 g/L. It shows the potential of this material and the interest for advancing in more complex diesel particle filter designs based on the results of this work.

A control-oriented modular one-dimensional model for wall-flow diesel particulate filters

2017 ◽  
Vol 19 (3) ◽  
pp. 329-346 ◽  
Author(s):  
Soroosh Hassanpour ◽  
John McPhee
Keyword(s):  
Differential Equations ◽  
Dimensional Model ◽  
Orthogonal Collocation ◽  
Diesel Particulate ◽  
One Dimensional ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Wall Flow ◽  
Flow Pressure ◽  
Regeneration Processes

A comprehensive modular one-dimensional physics-based mathematical model is developed for non-isothermal compressible flow, pressure drop, and filtration and regeneration processes in wall-flow diesel particulate filters. Employing a modified orthogonal collocation method and symbolic computation in Maple™, the governing partial differential equations are reduced to a control-oriented model governed by ordinary differential equations which can be solved in real time. Numerical examples are provided to indicate the accuracy and computational efficiency of the developed model and to study the different behaviors of wall-flow diesel particulate filters.

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