This work investigates the effect of engine operating conditions and exhaust sampling conditions (i.e. dilution ratio) on engine-out, nano-scale, particulate matter emissions from a gasoline direct-injection engine during cold-start and warm-up transients. The engine used for this research was an in-line four cylinder, four stroke, wall-guided direct-injection, turbo-charged and inter-cooled 1.6 l gasoline engine. A fast-response particulate spectrometer for exhaust nano-particle measurement up to 1000 nm was utilized, along with a spark-plug mounted pressure transducer for combustion analysis. It was observed that the total particle count decreases during the cold-start transient, and has a distinct relationship with the engine body temperature. Tests have shown that the engine body temperature may be used as a control strategy for engine-out particulate emissions. This work has identified that up to 95 % of particles emitted during the cold-start transient are in the 5-23 nm size range. It is also evident that the dilution ratio of the exhaust sample has a significant effect on the particulate matter number and size distribution.


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    Titel :

    The Effect of Engine Operating Conditions on Engine-out Particulate Matter from a Gasoline Direct-injection Engine during Cold-start


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Timoney, David (Autor:in) / Whelan, Ian (Autor:in) / Samuel, Stephen (Autor:in) / Smith, William (Autor:in)

    Kongress:

    SAE 2012 International Powertrains, Fuels & Lubricants Meeting ; 2012



    Erscheinungsdatum :

    2012-09-10




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch