Reactivity Controlled Compression Ignition (RCCI) has been shown to be an attractive concept to achieve clean and high efficiency combustion. RCCI can be realized by applying two fuels with different reactivities, e.g., diesel and gasoline. This motivates the idea of using a single low reactivity fuel and direct injection (DI) of the same fuel blended with a small amount of cetane improver to achieve RCCI combustion. In the current study, numerical investigation was conducted to simulate RCCI and HCCI combustion and emissions with various fuels, including gasoline/diesel, iso-butanol/diesel and iso-butanol/iso-butanol+di-tert-butyl peroxide (DTBP) cetane improver. A reduced Primary Reference Fuel (PRF)-iso-butanol-DTBP mechanism was formulated and coupled with the KIVA computational fluid dynamic (CFD) code to predict the combustion and emissions of these fuels under different operating conditions in a heavy duty diesel engine. The results show that RCCI combustion is achievable by applying a single low reactivity fuel combined with small amount of DTBP cetane improver over wide operating conditions, and that the performance of the iso-butanol-DTBP fuel is comparable to that of gasoline-diesel and iso-butanol-diesel fuels. However, due to the low reactivity of iso-butanol, a relatively high amount of DTBP is needed to enhance the reactivity of the DI iso-butanol+DTBP mixture. The simulations were extended to also model homogeneous charge compression ignition (HCCI) combustion under similar operating conditions with the various fuels. Comparisons between HCCI and RCCI show that although comparable performance can be obtained with HCCI under low to medium load conditions, RCCI shows advantages under higher load conditions.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Numerical Study of RCCI and HCCI Combustion Processes Using Gasoline, Diesel, iso-Butanol and DTBP Cetane Improver


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    DelVescovo, Dan (Autor:in) / Wang, Hu (Autor:in) / Yao, Mingfa (Autor:in) / Reitz, Rolf D. (Autor:in)

    Kongress:

    SAE 2015 World Congress & Exhibition ; 2015


    Erschienen in:

    Erscheinungsdatum :

    14.04.2015


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Numerical Study of RCCI and HCCI Combustion Processes Using Gasoline, Diesel, iso-Butanol and DTBP Cetane Improver

    Wang, Hu / DelVescovo, Dan / Yao, Mingfa et al. | British Library Conference Proceedings | 2015



    A No-Harm Test Matrix Investigating the Effect of Di-tert-butyl Peroxide (DTBP) Cetane Improver on Diesel Fuel Properties

    Goodrich, B. E. / McDuff, P. J. / Krupa, C. C. et al. | British Library Conference Proceedings | 1998


    The Effect of Di-Tertiary Butyl Peroxide (DTBP) Addition to Gasoline on HCCI Combustion

    Eng, J. A. / Sloane, T. M. / Leppard, W. R. | SAE Technical Papers | 2003