Engine Bench and Vehicle Durability Tests of Si bonded SiC Particulate Filters

Schäfer-Sindlinger, A.; Vogt, Claus; Okumura, J.; Toyoshima, Tetsuo; Hashimoto, S.

doi:10.4271/2004-01-0952

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…33 Nevertheless, extensive durability tests have proved a successful performance to date. 34,35 Other SiC-Based Materials: Porous silicate-bonded SiC filter materials are well established for hot gas cleanup in pressurized fluidized-bed combustion (PFBC)coal combustion installations up to 8501C. 36 There are also attempts to use similar SiC ceramics with honeycomb shape in an unsegmented design as DPF; 37 however, corrosion and thermal stability are not well proven to date.…”

Section: Silicon Carbidementioning

confidence: 99%

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Ceramic Diesel Particulate Filters

Adler

2005

Int J Applied Ceramic Tech

293

125

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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.

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Section: Silicon Carbidementioning

confidence: 99%

“…Besides the thermal conductivity of Si–SiC is a bit lower than that of RSiC because SiC–Si grain boundaries work as a thermal barrier 33 . Nevertheless, extensive durability tests have proved a successful performance to date 34,35 …”

mentioning

confidence: 99%

Ceramic Diesel Particulate Filters

Adler

2005

Int J Applied Ceramic Tech

293

125

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“…Due to reduced soot storage volume the maximum temperature in the filter slightly increased ( figure 18). But the temperature readings from thermocouples at the outlet of the filter decreased significantly while the back pressure of the system rose due to ash deposition [14].…”

Section: Engine Durability Tests Of Fuel Additive Systemsmentioning

confidence: 99%

Efficient material design for diesel particulate filters

Schaefer-Sindlinger¹,

Lappas²,

Vogt³

et al. 2007

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This paper will give an overview about the filter development for diesel particulate emission control in automotive applications. The material development for passenger car diesel particulate filters led to new materials like silicon carbide while for heavy duty applications still Cordierite plays a major role. But in the future other materials might also be used for passenger cars. This paper will show the basic difference between both applications and describe the material design in terms of filter properties (base material, back pressure aspects, filtration efficiency, coating impact). Current application on vehicles with catalysed soot filters (CSF) with and without oxidation catalyst will be presented. Furthermore an outlook will be given on materials for catalysed soot filters for the future.

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“…If such conditions are maintained, and it the PM would be continuously clogging in the filter and it may cause the back pressure due to the agglomeration of PM and the deterioration of engine performance. On the other hand, frequent active regenerations by an electric heater or burner need to be avoided due to higher fuel economy and reduced durability of the filters (Schafer-Sindlinger et al, 2004;Merkel et al, 2001). In order to perform proper regeneration, an ECU has to decide whether the filter needs to be regenerated or not.…”

Section: Introductionmentioning

confidence: 99%

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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Engine Bench and Vehicle Durability Tests of Si bonded SiC Particulate Filters

Cited by 8 publications

References 7 publications

Ceramic Diesel Particulate Filters

Ceramic Diesel Particulate Filters

Efficient material design for diesel particulate filters

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

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