Multichannel Simulation of Soot Oxidation in Diesel Particulate Filters

2003 ◽  
Author(s):  
Athanasios G. Konstandopoulos ◽  
Margaritis Kostoglou ◽  
Paraskevi Housiada ◽  
Nickolas Vlachos ◽  
Dimitrios Zarvalis
Keyword(s):  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters

Modelling of soot oxidation by NO2 in various types of diesel particulate filters

Fuel ◽  
2010 ◽  
Vol 89 (9) ◽  
pp. 2365-2375 ◽  
Author(s):  
M. Schejbal ◽  
J. Štěpánek ◽  
M. Marek ◽  
P. Kočí ◽  
M. Kubíček
Keyword(s):  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters

Regeneration Characteristics of Diesel Particulate Filters Under Transient Exhaust Conditions

2005 ◽  
Author(s):  
M. Rizwan Khan ◽  
Tariq Shamim
Keyword(s):  
Steady State ◽  
Soot Oxidation ◽  
Effect Of Temperature ◽  
Particulate Emissions ◽  
Computational Investigation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Fundamental Understanding ◽  
Careful Design

Particulate emissions from diesel engines, which have hazardous effects on living beings and environment, can be controlled by employing diesel particulate filters (DPFs). The DPF cleans the exhaust by physical trapping of the particulates. A major challenge in developing a DPF with wider applications is its lower durability. The filter durability may be increased by careful design of regeneration (soot oxidation) strategies. The regeneration characteristics of a DPF under steady state conditions are well known. However, during a typical driving cycle, a DPF is subjected to highly transient conditions due to changes in driving modes. These transients result in fluctuations of exhaust flow rate, gas composition and temperature. Such modulating exhaust conditions make the DPF performance and regeneration characteristics differ significantly from that under steady state conditions. The objective of this paper is to investigate the thermal and catalytic regeneration characteristics of DPF under transient exhaust conditions. In this work, a computational investigation is conducted to determine the effect of temperature and exhaust flow modulations on a DPF. The paper contributes to a better fundamental understanding of the filter’s performance under transient driving conditions.

112 Effect of Catalyst Coating Method on Soot Oxidation Performance in Diesel Particulate Filters

2014 ◽  
Vol 2014.67 (0) ◽  
pp. _112-1_-_112-2_
Author(s):  
Shotaro OSHIMA ◽  
Ryosuke FUJIWARA ◽  
Shohei YAMAMOTO ◽  
Hironobu UEKI ◽  
Masahiro ISHIDA
Keyword(s):  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Catalyst Coating ◽  
Coating Method ◽  
Oxidation Performance

Soot Oxidation Kinetics in Diesel Particulate Filters

2007 ◽  
Author(s):  
Athanasios G. Konstandopoulos ◽  
Margaritis Kostoglou ◽  
Souzana Lorentzou ◽  
Chrysa Pagkoura ◽  
Eleni Papaioannou ◽  
...  
Keyword(s):  
Oxidation Kinetics ◽  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters

Development of a Surface Area Dependent Rate Expression for Soot Oxidation in Diesel Particulate Filters

2013 ◽  
Vol 56 (1-8) ◽  
pp. 499-503 ◽  
Author(s):  
Josh A. Pihl ◽  
Jennifer A. Lewis ◽  
Todd J. Toops ◽  
Brad J. Adelman ◽  
Ed M. Derybowski
Keyword(s):  
Surface Area ◽  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Rate Expression ◽  
Dependent Rate

Experimental evaluation of apparent soot oxidation rates in diesel particulate filters

2004 ◽  
Vol 35 (4) ◽  
pp. 365 ◽  
Author(s):  
Onoufrios A. Haralampous ◽  
Ioannis P. Kandylas ◽  
Grigorios C. Koltsakis ◽  
Zissis C. Samaras
Keyword(s):  
Experimental Evaluation ◽  
Soot Oxidation ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Oxidation Rates

scholarly journals The Issue of Soot-Catalyst Contact in Regeneration of Catalytic Diesel Particulate Filters: A Critical Review

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1307
Author(s):  
Luciana Lisi ◽  
Gianluca Landi ◽  
Valeria Di Sarli
Keyword(s):  
Soot Oxidation ◽  
Critical Issue ◽  
Intrinsic Activity ◽  
Contact Conditions ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Literature Reviews ◽  
Soot Distribution ◽  
Catalyst Dispersion

Soot-catalyst contact represents the main critical issue for an effective regeneration of catalytic (i.e., catalyst-coated) diesel particulate filters (DPFs). Most of the literature reviews on this topic have mainly been focused on studies dealing with powdered soot-catalyst mixtures. Although the results obtained on powders surely provide significant indications, especially in terms of intrinsic activity of materials towards soot oxidation, they cannot be directly extended to DPFs due to completely different soot-catalyst contact conditions generated during filtration and subsequent regeneration. In this work, attention is devoted to catalytic DPFs and, more specifically, studies on both catalyst dispersion and soot distribution inside the filter are critically reviewed from the perspective of soot-catalyst contact optimization. The main conclusion drawn from the literature analysis is that, in order to fully exploit the potential of catalytic DPFs in soot abatement, both a widespread and homogeneous presence of catalyst in the macro-pores of the filter walls and a suitably low soot load are needed. Under optimal soot-catalyst contact conditions, the consequent decrease in the temperature required for soot oxidation to values within the temperature range of diesel exhausts suggests the passage to a continuous functioning mode for catalytic filters with simultaneous filtration and regeneration, thus overcoming the drawbacks of periodic regeneration performed in current applications.

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