This work aimed to study nano-scale particulate matter originating from gasoline direct injection engine during cold start and warm up operating conditions and to identify the role of the three-way catalytic converter on nano-scale particulate during cold-start and warm-up operating conditions. This work used a 4-stroke, 1.6 litre, wall guided gasoline direct injected, turbocharged and intercooled SI engine equipped with a three-way catalytic converter for this investigation. It used a fast particle spectrometer for the measurement of exhaust nano-scale particles upto 1000 nm diameter. This work identified that about 98% of the particles during cold-start are in the size range below 25 nm diameter; the particle count during cold-start measured upstream of the catalytic converter is three orders of magnitude higher than the downstream measurement; the difference observed for the particles in the size range 5-25 nanometer diameter seems to follow the trend of the conversion characteristics of CO in the catalytic converter during the warm-up period at low load and low speed engine operating conditions.


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    Title :

    Particulate Matter Emissions and the Role of Catalytic Converter During Cold Start of GDI Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2010 Powertrains Fuels & Lubricants Meeting ; 2010



    Publication date :

    2010-10-25




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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