Overview of Ceramic Materials for Diesel Particulate Filter Applications

Cutler, Willard A.

doi:10.1002/9780470291184.ch61

Cited by 23 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The properties of the filter materials are described in detail in the filter materials section. A comprehensive article about material attributes concerning ceramic DPF materials has been published recently 9 …”

Section: Filter Materialsmentioning

confidence: 99%

“…A comprehensive article about material attributes concerning ceramic DPF materials has been published recently. 9 The properties of the different filter materials can only be compared directly, if they show the same pore volume and mean pore size. Unfortunately, there is a lack of reliable and comparable data in the literature, mainly regarding strength.…”

Section: Materials Selectionmentioning

confidence: 99%

See 1 more Smart Citation

Ceramic Diesel Particulate Filters

Adler

2005

Int J Applied Ceramic Tech

288

125

View full text Add to dashboard Cite

Twenty‐five years of diesel particulate filter (DPF) developments have shown that ceramic materials are well‐suited candidates to fulfill the harsh requirements of exhaust after treatment. The introduction of DPF in passenger cars in Europe in 2000 was a real breakthrough from both a scientific and a commercial point of view. Different systems and filter materials can be used as DPF; however, at the moment silicon carbide wall flow filters seem to be at advantage. There is a continual demand for cost‐effective and reliable materials and systems forced by increasing legal emission standards.

show abstract

Section: Filter Materialsmentioning

confidence: 99%

Section: Materials Selectionmentioning

confidence: 99%

Ceramic Diesel Particulate Filters

Adler

2005

Int J Applied Ceramic Tech

288

125

View full text Add to dashboard Cite

show abstract

“…The preferred approach is the diesel particulate filter (DPF), which exists in many variations (Cutler, 2004). Most are wall-flow devices, which remove PM from exhaust by forcing it through porous walls separating adjacent channels in a monolithic substrate.…”

Section: Introductionmentioning

confidence: 99%

Chemical characterization of particulate emissions from diesel engines: A review

Maricq

2007

Journal of Aerosol Science

746

122

View full text Add to dashboard Cite

“…This leads to local ignition and formation of a sharp temperature front that propagates along the surface combusting the PM 5, 6. Experience revealed that the exothermic regeneration sometimes creates excessively hot local regions that melt the cordierite ceramic filter (melting temperature ∼1250°C) 7–9. Unfortunately, the knowledge and understanding of what causes the formation of the hot regions is still an open question.…”

Section: Introductionmentioning

confidence: 99%

Counter‐intuitive temperature excursions during regeneration of a diesel particulate filter

Chen¹,

Martirosyan²,

Luss³

2010

AIChE Journal

View full text Add to dashboard Cite

A major technological challenge in the regeneration of diesel particulate filters (DPFs) is that sometimes local high temperature excursions melt the cordierite ceramic filter. The cause of this melting is still an open question as the highest temperature attained under stationary (constant feed) combustion of the accumulated particulate matter is too low to cause this melting (melting temperature $1250 C). We recently conjectured that the high temperature excursions are a counterintuitive response to a rapid deceleration, which decreases the exhaust gas temperature and flow rate and increases the oxygen concentration. Infrared measurements of the spatiotemporal temperature during soot combustion on a single-layer DPF showed that a simultaneous step change of the feed temperature, flow rate, and oxygen concentration can lead to a transient temperature that exceeds the highest attained for stationary operation under either the initial or the final operation conditions. The experiments revealed that the magnitude of the temperature rise depends in a complex way on several factors, such as the direction of movement of the propagating temperature front. The amplitude of the temperature rise is a monotonic decreasing function of the distance that the temperature front moved before the step change. The rapid response to the feed oxygen concentration increases initially the moving front temperature. The slow response of the ceramic DPF to a decrease in the feed temperature may eventually decrease the moving front temperature and even lead to premature extinction and partial regeneration.

show abstract

Overview of Ceramic Materials for Diesel Particulate Filter Applications

Cited by 23 publications

References 0 publications

Ceramic Diesel Particulate Filters

Ceramic Diesel Particulate Filters

Chemical characterization of particulate emissions from diesel engines: A review

Counter‐intuitive temperature excursions during regeneration of a diesel particulate filter

Contact Info

Product

Resources

About