The Partially Pre-mixed Charge Compression Ignition (PCCI) combustion was experimentally and computationally investigated with retarded injection timing for mixture homogeneity and for lower emissions. PCCI combustion concept was experimentally evaluated with retarded injection timing close to TDC with high EGR levels up to 50%. The CFD analysis has carried out for mixture homogeneity with different injection pressures and timings. A 4-cylinder TCIC engine having 2valves/cylinder were selected for experiments and speed vs. torque mapped for LCV applications. A Visio technique has been used to study the in-cylinder combustion. After fine tuning of injection pressure, injection timing and EGR ratio over entire range of engine speeds and loads, a 13-mode ESC test cycle has been carried out for EURO-IV and EURO-V emissions. Experimental results shows that it is possible to meet EURO-IV emissions with combined PCCI-DI combustion concept with economical aftertreatment solution. But for EURO-V norms, NOx, CO and THC emissions were within the regulation limits, but for PM was higher. In this study part load BSFC improvement was observed with PCCI combustion concept.


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    Title :

    Combined PCCI-DI Combustion to Meet EURO-IV Norms on LCV Engine - Experimental and Visulisation Study


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SIAT 2011 ; 2011



    Publication date :

    2011-01-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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