Several methods to reduce ignition delay period were tested in combination with a high pressure injection and effects on combustion improvement were examined.It was found that the reduction of ignition delay does not give so much improvement at the usual injection timing before TDC, but when the injection timing is considerably retarded or when the original ignition delay is relatively long, shortening of the ignition delay is effective to reduce pre-mixed combustion and NOx emission.Further, assuming the combustion system which conforms to the 1983 Japanese regulation as the reference system, it was found that the combination of pilot injection and high injection pressure, simultaneously reduces NOx by approximately 35% and smoke by 60-80% without worsening the fuel economy.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    NOx Reduction from Diesel Combustion Using Pilot Injection with High Pressure Fuel Injection


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1992



    Publication date :

    1992-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    NOx reduction from diesel combustion using pilot injection with high pressure fuel injection

    Shundoh,S. / Komori,M. / Tsujimura,K. et al. | Automotive engineering | 1992


    Diesel Combustion Improvement and Emissions Reduction Using VCO Nozzles with High Pressure Fuel Injection

    Tsujimura, Kinji / Komori, Masanori / Ishikawa, Naoya et al. | SAE Technical Papers | 1994


    Diesel combustion improvement and emissions reduction using VCO nozzles with high pressure fuel injection

    Takeda,Y. / Ishikawa,N. / Komori,M. et al. | Automotive engineering | 1994


    Pilot injection devices in diesel fuel injection systems

    Jones,A.G. / Lucas CAV,GB | Automotive engineering | 1989


    Spectral IR images of direct-injection diesel combustion by high-pressure fuel injection

    Clasen,E. / Campbell,S. / Rhee,K.T. et al. | Automotive engineering | 1995