Prediction and Validation of Pressure Drop for Catalyzed Diesel Particulate Filters

Flörchinger, Peter; Anderson, Michael W.; Hou, Zhixin; Taubert, Todd; Steinbrueck, Ed; Angelo, Ted

doi:10.4271/2003-01-0843

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…Previous studies have indicated that changes in the amount of catalyst coating could affect the characteristics of pressure drop (Flörchinger et al, 2003). However, this study has showns that changes in the amount of catalyst coating have weak influence on the changes in pressure drop.…”

Section: Heat Transfer Inside the Filtermentioning

confidence: 91%

Pressure drop and heat transfer of catalyzed diesel particulate filters due to changes in soot loading and flow rate

Cho

Kim

Park

2008

Int.J Automot. Technol.

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When soot particles are loaded in a diesel particulate filter, it causes increase in back pressure of the exhaust system. To minimize this pressure drop due to DPF, the filter needs to be regenerated after a certain amount of soot has been accumulated. It is crucial to estimate the correct amount of soot that has been accumulated by measuring the differential pressure. It is also important to understand changes in pressure drop due to flow rate variations of the exhaust gas, since the pressure drop would be influenced by the exhaust flow rate as well as the amount of soot. Furthermore, the heat transfer characteristics of the catalyzed diesel particulate filter (CDPF) are another major issue, as the filter is occasionally exposed to high temperature gas. This study presents the characteristics of pressure drop according to the variation of soot loading and the mass flow rate in CDPF. In addition, heat transfer characteristics in the filter was investigated when a high temperature gas flows into the CDPF. Tests were performed in several CDPF samples having varying amounts of catalyst coating. Experimental results indicate that rig-based experiments are useful in understanding the characteristics of pressure drop in the CDPF. In the cake filtration region, a pressure drop has a proportional relationship according to soot loading and mass flow rate. It was found that an increased catalyst coating may lead to enhanced convective heat transfer.

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Section: Heat Transfer Inside the Filtermentioning

confidence: 91%

Pressure drop and heat transfer of catalyzed diesel particulate filters due to changes in soot loading and flow rate

Cho

Kim

Park

2008

Int.J Automot. Technol.

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show abstract

“…where b is the Forchheimer coefficient, representing quadratic drag in porous media flows (Florchinger et al, 2003):…”

Section: Governing Equations Of the Monolith Regionmentioning

confidence: 99%

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Кузнецов

Jasper

2011

Journal of Aerosol Science

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Meeting the US 2007 Heavy-Duty Diesel Emission Standards - Designing for the Customer

Dollmeyer¹,

Vittorio²,

Grana³

et al. 2007

SAE Technical Paper Series

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Prediction and Validation of Pressure Drop for Catalyzed Diesel Particulate Filters

Cited by 5 publications

References 6 publications

Pressure drop and heat transfer of catalyzed diesel particulate filters due to changes in soot loading and flow rate

Pressure drop and heat transfer of catalyzed diesel particulate filters due to changes in soot loading and flow rate

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Meeting the US 2007 Heavy-Duty Diesel Emission Standards - Designing for the Customer

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