Mechanical load and thermal load are the two main barriers limiting the engine power output of heavy duty (HD) diesel engines. Usually, the peak cylinder pressure could be reduced by retarding combustion phasing while introducing the drawback of higher thermal load and exhaust temperature. In this paper, Miller cycle with late intake valve closing was investigated at high speed high load condition (77 kW/L) on a single cylinder HD diesel engine. The results showed the simultaneous reduction of mechanical and thermal loads. In the meanwhile, higher boosting pressure was required to compensate the Miller loss of the intake charge during intake and compression process. The combustion temperature, cylinder pressure, exhaust temperature and NOx emission were reduced significantly with Miller cycle at the operating condition. Furthermore, the combustion process, smoke number and fuel consumption were analysed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The Reduction of Mechanical and Thermal Loads in a High-Speed HD Diesel Engine Using Miller Cycle with Late Intake Valve Closing


    Additional title:

    Sae Technical Papers


    Contributors:
    Guo, Chao (author) / Bai, Honglin (author) / liu, Jinlong (author) / Zhang, Yan (author) / Li, Yufeng (author) / Wang, Ziyu (author)

    Conference:

    WCX™ 17: SAE World Congress Experience ; 2017



    Publication date :

    2017-03-28




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Effect of EGR on The Late Intake-Valve Closing Miller Cycle for Natural Gas Engines

    Okamoto, K. / Zhang, F.-R. / Shimogata, S. et al. | British Library Online Contents | 1998


    NOx Reduction in a Medium-Speed Single-Cylinder Diesel Engine using Miller Cycle with Very Advanced Valve Timing

    Antila, Eero / Kallio, Ilari / Larmi, Martti et al. | SAE Technical Papers | 2009


    Insulated Miller Cycle Diesel Engine

    Reid, Michael / Mavinahally, Nagesh / Kamo, Roy et al. | SAE Technical Papers | 1996


    Development of a Late Intake-Valve Closing (LIVC) Miller Cycle for Stationary Natural Gas Engines - Effect of EGR Utilization

    Zhang, Fu-Rong / Shoji, Fujio / Okamoto, Kazuhisa et al. | SAE Technical Papers | 1997