An approach for raw exhaust gas sampling, different from the conventional diluted exhaust gas sampling method, has been adopted for a solid particle counting system developed in the previous study. The system has been applied for evaluating solid particle emission from a DI diesel engine with DPF. In addition the filtration efficiency of the DPF has been tested from the real time concentrations, measured at upstream and downstream of the DPF. High accuracy and stability of measurement of the system against high exhaust gas pressure condition have been confirmed. The system response satisfies the requirement of ISO 8178-11. Excellent correlation of direct sampling and diluted gas sampling has been achieved with this system. It is found that the filtration efficiency changes during the engine test cycle and is strongly affected by the pre-conditioning of DPF.


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    Title :

    Evaluation of Exhaust Particle Emissions from a DI Diesel Engine Using a Solid Particle Counting System with Direct Sampling Unit


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Powertrains, Fuels and Lubricants Meeting ; 2011



    Publication date :

    2011-08-30




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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