A dual fuel operation with different reactivity fuels has the possibility of optimizing performance and emissions in premixed charge compression ignition engines by controlling the spatial concentration and distribution of both fuels.In the present study, n-heptane and i-octane were independently injected through two different injectors. In-cylinder pressure analysis and emissions measurement were performed in a compression ignition engine. Injection timings, fuel quantity ratio between the injections were changed for the two cases, in which one fuel was injected using a port fuel injection system while the other was directly injected into the cylinder, in order to drastically vary mixture distributions and ignition timings. In addition, an optical diagnostic was performed in a rapid compression and expansion machine to develop an understanding of the ignition processes of the two mixtures.The experimental results show that not only the mixedness of the more reactive fuel n-heptane but also that of the less reactive fuel i-octane have significant impacts on the ignition timings, burn rates and emissions. As a first step to establish an optimum method of controlling burn rate, engine performance and emissions formation processes, the present study developed an understanding of the effects of the mixture distributions and ignition timings of two fuels on emissions and thermal efficiency.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effects of Mixedness and Ignition Timings on PCCI Combustion with a Dual Fuel Operation


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Tanaka, Daijiro (Autor:in) / Senda, Jiro (Autor:in) / Kishiura, Masato (Autor:in) / Kato, Satoshi (Autor:in) / Maruko, Teppei (Autor:in) / Kobashi, Yoshimitsu (Autor:in)

    Kongress:

    SAE International Powertrains, Fuels and Lubricants Meeting ; 2011



    Erscheinungsdatum :

    30.08.2011




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Effects of Mixedness and Ignition Timings on PCCI Combustion with a Dual Fuel Operation

    Kobashi, Y. / Tanaka, D. / Maruko, T. et al. | British Library Conference Proceedings | 2011


    Remote Combustion Sensing Methodology for PCCI and Dual-Fuel Combustion Control

    Moro, Davide / Ponti, Fabrizio / Stola, Federico et al. | SAE Technical Papers | 2015


    Remote Combustion Sensing Methodology for PCCI and Dual-Fuel Combustion Control

    Ponti, Fabrizio / Ravaglioli, Vittorio / De Cesare, Matteo et al. | British Library Conference Proceedings | 2015


    Combustion Phasing Controllability with Dual Fuel Injection Timings

    Johansson, B.H. / Leermakers, C.A.J. / Somers, L.M.T. | SAE Technical Papers | 2012


    An Optical Investigation of Ignition Processes in Fuel Reactivity Controlled PCCI Combustion

    Splitter, Derek / Rein, Keith / Hanson, Reed et al. | SAE Technical Papers | 2010