Enhanced calibration strategies and innovative engine combustion technologies are required to meet the new limits on exhaust gas emissions enforced in the field of marine propulsion and on-board energy production.The goal of the paper is to optimize the control parameters of a 4.2 dm3 unit displacement marine DI Diesel engine, in order to enhance the efficiency of the combustion system and reduce engine out emissions. The investigation is carried out by means of experimental tests and CFD simulations.For a better control of the testing conditions, the experimental activity is performed on a single cylinder prototype, while the engine test bench is specifically designed to simulate different levels of boosting.The numerical investigations are carried out using a set of different CFD tools: GT-Power for the engine cycle analysis, STAR-CD for the study of the in-cylinder flow, and a customized version of the KIVA-3V code for combustion. All the models are calibrated through the above mentioned experimental campaign.Then, CFD simulations are applied to optimize the injection parameters and to explore the potential of the Miller combustion concept. It is found that the reduction of the charge temperature, ensuing the adoption of an early intake valve closing strategy, strongly affects combustion. With a proper valve actuation strategy, an increase of boost pressure and an optimized injection advance, a 40% reduction of NOx emissions can be obtained, along with a significant reduction of in-cylinder peak pressure, without penalizing fuel efficiency.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Combustion Optimization of a Marine DI Diesel Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    11th International Conference on Engines & Vehicles ; 2013



    Erscheinungsdatum :

    08.09.2013




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Combustion Optimization of a Marine DI Diesel Engine

    Mattarelli, E. / Fontanesi, S. / Rinaldini, C. et al. | British Library Conference Proceedings | 2013


    Combustion Residue of Marine Diesel Engine

    Takase, Toshikazu / Yamawaki, Makoto / Takahashi, Mitsuo et al. | TIBKAT | 1997


    Combustion development of new medium-speed marine diesel engine

    Zhang,W. / Ren,L. / Wang,C. et al. | Kraftfahrwesen | 2013


    MARINE DIESEL ENGINE

    Europäisches Patentamt | 2024

    Freier Zugriff

    MARINE DIESEL ENGINE

    TSUJI YOHEI / MITSUYANAGI AKIHIRO / YAMAUCHI TAKAHIRO | Europäisches Patentamt | 2018

    Freier Zugriff