An einem 2-Takt Detroit-Dieselmotor wurden die Partikelemissionen und die Regenerationen verschiedener Partikelfilter untersucht. Als Hilfsmaßnahmen für die Regeneration wurden Drosselung, Additive, Oxidationskatalysator, katalytische Beschichtung und deren Kombinationen verwendet. Es zeigte sich, dass die Partikelemission des 2-Takters etwa doppelt soviel SOF wie beim 4-Takter beinhaltet und dass die Kombinationen der genannten Hilfsmaßnahmen zusammen mit entsprechenden beständigen Filtermaterialien aussichtsreiche Potenziale für die Nachrüstung des 2-Takt Dieselmotors bieten. Aufgrund zahlreicher Parameter, die eine Regeneration des DPF beeinflussen und die auch vom Belastungskollektiv des Fahrzeuges stark abhängen, ist die abschließende Beurteilung eines Filter-Regenerationssystems nur im Feldversuch möglich.

    Different diesel particulate filters (DPF) were tested on a 2-stroke Detroit-Diesel bus engine 6V 92 TA. The investigations focused on soot burden and regeneration of the DPF with special filter materials. Also examined was promoting the regeneration by throttling, additive (FBC), oxidation catalytic converter upstream of DPF and the catalytic coating of the filter material. The metrics were the particulate matter emission, its composition and the nanoparticles. The most important results are: The average SOF content in the engine exhaust particulate matter is 77.6 % and the majority of it is emitted as bigger droplets. The wire-mesh filter catalyst (WFC) - an novel emission reduction technology, substantially curtails the SOF and PM. WFC traps and oxidizes the oil droplets and produces a 'dry' soot. This can be very advantageous for the DPF downstream of WFC (WFC can be also very interesting for 2-S gasoline engines). - The investigated combination of WFC, FBC, throttling and some highly resistant filter materials, offer new potential DPF-systems to fulfil the retrofitting requirements of 2-stroke diesel. Successful field regeneration depends upon many parameters, which are variable with the engine operating conditions. The real-world regeneration and the long time behaviour of the DPF system can be reliably checked only in field tests.


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    Title :

    Research of the particulate emission and regenerations of different DPF's on a Detroit Diesel 2-stroke bus engine


    Additional title:

    Besonderheiten der Partikelemission und Varianten für DPF-Retrofitting von 2-Takt Detroit Dieselmotoren


    Contributors:
    Czerwinski, J. (author) / Mayer, A. (author) / Hebert, A. (author)


    Publication date :

    2005


    Size :

    51 Seiten, 9 Bilder, 9 Quellen


    Remarks:

    (+ 37 S. overhead presentation)


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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