Field Trial for Diesel Passenger Cars with DPNR

Tsuzuki, Masato; Tahara, Jun; Sugiyama, Tatsumasa; Fujimura, Toshio; Hirota, Shinya; Paquet, Thiebault

doi:10.1007/bf03246784

Cited by 4 publications

(1 citation statement)

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“…The Opel Vectra was equipped with a catalytic coated SiC wall flow filter (CSF), which also is regenerated periodically. The third car, Toyota Avensis, had a combined particle filter and lean NOx-trap (D-cat) to simultaneously reduce particle and NOx emissions (19). The surface of this corderite wall flow filter is catalyst coated with catalyzing noble-metal for filter regeneration and with barium oxide for NO2 trapping during lean combustion phases.…”

Section: Methodsmentioning

confidence: 99%

Particle Emissions from Diesel Passenger Cars Equipped with a Particle Trap in Comparison to Other Technologies

Mohr

Forss

Lehmann

2006

Environ. Sci. Technol.

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Tail pipe particle emissions of passenger cars, with different engine and aftertreatment technologies, were determined with special focus on diesel engines equipped with a particle filter. The particle number measurements were performed, during transient tests, using a condensation particle counter. The measurement procedure complied with the draft Swiss ordinance, which is based on the findings of the UN/ECE particulate measurement program. In addition, particle mass emissions were measured by the legislated and a modified filter method. The results demonstrate the high efficiency of diesel particle filters (DPFs) in curtailing nonvolatile particle emissions over the entire size range. Higher emissions were observed during short periods of DPF regeneration and immediately afterward, when a soot cake has not yet formed on the filter surface. The gasoline vehicles exhibited higher emissions than the DPF equipped diesel vehicles but with a large variation depending on the technology and driving conditions. Although particle measurements were carried out during DPF regeneration, it was impossible to quantify their contribution to the overall emissions, due to the wide variation in intensity and frequency of regeneration. The numbers counting method demonstrated its clear superiority in sensitivity to the mass measurement. The results strongly suggest the application of the particle number counting to quantify future low tailpipe emissions.

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Section: Methodsmentioning

confidence: 99%