DPF's Regeneration Procedures and Emissions with RME Blend Fuels Univ. of Applied Sciences Biel-Bienne

Format:

Conference/Event

Author/Creator:

Czerwinski, Czerwinski, author.

Contributor:

Bonsack, Peter

Bürki, Samuel

D'Urbano, Giovanni

Dimopoulos Eggenschwiler, Panayotis

Heeb, Adm Norbert

Hermle, Sandra

Mayer, Andreas

Renz, Stephan

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

The fatty acid methyl esters (FAME's) - in Europe mostly RME(Rapeseed methyl ester) - are used in several countries asalternative biogene diesel fuels in various blending ratios withfossil fuels (Bxx). Questions often arise about the influences ofthese biocomponents on the modern exhaust aftertreatment systemsand especially on the regeneration of diesel particle filters(DPF).In the present work different regeneration procedures of DPFsystems were investigated with biofuels B0, B20 and B100. Thetested regeneration procedures were: - passive regenerations: DOC +CSF; CSF alone, and - active regenerations: standstill burner; fuelinjections and DOC.During each regeneration on-line measurements of regulated andunregulated emission components (nanoparticles and FTIR) wereconducted.It can be stated that the increased portion of RME in fuelprovokes longer time periods to charge the filter with soot. Thisis due to the lower PM emissions of the engine, as well as to thehigher reactivity and higher SOF portion of the particle mass fromRME.With the passive regeneration system with stronger catalyticactivity (DOC + CSF) there is a stronger NO₂ production with B100and due to the NO₂-supported oxidation of PM the balance pointtemperature is approximately 20°C lower, than with B0. For the activeregenerations the time histories of emissions and temperatures areclosely connected with the chosen regeneration strategy -switching, timing and intensity (of burner, or fuel aerosolgenerator).A higher portion of biocomponent usually causes a strongerbreakdown of the instantaneous DPF filtration efficiency during theregeneration procedure - this is an effect of stronger artifact ofspontaneous condensation after DPF.In summary there is no negative short-term effect of bio-blendfuels on the investigated regeneration procedures. Somerecommendations for a successful long-term operation, basing onother works and literature are given at the end of the paper

Notes:

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Publisher Number:

2012-01-0844

Access Restriction:

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