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Modeling Catalytic Regeneration of Wall-Flow Particulate Filters
Industrial & Engineering Chemistry Research, 1996The problem of initiating and controlling the regeneration of diesel particulate filters is the major obstacle in the wide application of trap systems in diesel-powered vehicles. The most promising solution approaches to this problem, in terms of minimization of system cost and of additional fuel consumption, are based on the use of catalysts to lower ...
Grigorios C. Koltsakis +1 more
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High Temperature Fatigue in Ceramic Wall-Flow Diesel Filters
SAE Technical Paper Series, 1985<div class="htmlview paragraph">Under certain operating conditions when the combined stresses in a ceramic wall-flow diesel filter from mechanical, thermal, and vibrational loads exceed its threshold strength, the fatigue effects become important.
Suresh T. Gulati, John D. Helfinstine
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Study on Reliability of Wall-Flow Type Diesel Particulate Filter
SAE Technical Paper Series, 2004<div class="htmlview paragraph">In this paper a method of DPF(Diesel Particulate Filter) lifetime estimation against the thermal stress is presented. In the method, experimentally measured material fatigue property and DPF temperature distributions under various conditions including regeneration mode were used to perform FEM stress analyses and ...
Tatsuyuki Kuki +4 more
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Advanced High Porosity Ceramic Honeycomb Wall Flow Filters
SAE Technical Paper Series, 2008<div class="htmlview paragraph">A new platform of advanced ceramic composite filter materials for diesel particulate matter and exhaust gas emission control has been developed. These materials exhibit high porosity, narrow pore-size distribution, robust thermo-mechanical strength, and are extruded into high cell density honeycomb structures for ...
Bilal Zuberi +6 more
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A Novel Technique to Measure Wall Flow in Diesel Particulate Filters
SAE Technical Paper Series, 2003<div class="htmlview paragraph">A novel technique for measuring the axial distribution of wall flow in diesel particle filters is described. It is based on measuring the dilution of a tracer gas (introduced at the upstream end of an outlet channel) as it passes along a filter channel, due to the wall flow. A relation is derived between the change
Ganapathi Subbu, Nick Collings
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Oxidation of Diesel Particulates by Catalyzed Wall-Flow Monolith Filters
SAE Technical Paper Series, 1987<div class="htmlview paragraph">Regeneration characteristics of three catalyzed wall-flow monolith (WFH) diesel particulate filters (one commercial filter and two experimental filters designated GMR-Pt and GMR-Ag, respectively) were compared in dynamometer tests with a GM 4.3 L diesel engine, All three filters regenerated at temperatures below ...
Robert W. McCabe, Robert M. Sinkevitch
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Thermal Durability of Wall-Flow Ceramic Diesel Particulate Filters
SAE Technical Paper Series, 2001<div class="htmlview paragraph">The maximum use temperature of a diesel particulate filter is often thought to be limited only by the melting point of the filter material itself. This paper suggests that the maximum practical use temperature for filters is limited not by the intrinsic filter melting temperature, but by the temperature at which ...
G. A. Merkel, W. A. Cutler, C. J. Warren
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A New Closing Method for Wall Flow Diesel Particulate Filters
SAE Technical Paper Series, 1996<div class="htmlview paragraph">A new method has been developed to close the ends of a wall flow filterused for removing particulate matter from diesel engine exhaust. In thismethod, the ends of the honeycomb structure are capped by deforming andclosing the ends of the channel walls between the extrusion and firingstages of production.</div>
Per Stobbe +3 more
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Simulation of Triangular-Cell-Shaped, Fibrous Wall-Flow Filters
SAE Technical Paper Series, 2003<div class="htmlview paragraph">In the present work we apply a computational simulation framework developed for square-cell shaped honeycomb Diesel Particulate Filters to study the filtration, pressure drop and soot oxidation characteristics of recently developed triangular-cell-shaped, high porosity wall-flow filters.
Athanasios G. Konstandopoulos +3 more
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Thermal Stresses in Ceramic Wall Flow Diesel Filters
SAE Technical Paper Series, 1983<div class="htmlview paragraph">Thermal stresses constitute a major portion of the total stress which the ceramic wall flow filter experiences in service. The primary source of these stresses is the temperature gradients, both in radial and axial directions, which attain their maximum values during regeneration.
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