Utilizing the desirable feature of hydrogen, this study demonstrates the improvement of engine performance and exhaust emissions due to the mixing of hydrogen into natural-gas fuel in a spark-ignition engine at the wide-open throttle (WOT) condition. Both hydrogen and natural-gas fuels were injected into the intake port only in the suction flow, which could make the operation under a wide range of conditions without backfire even at a hydrogen fuel. Based on the measured processes of combustion, the knock characteristics were discussed with special attention to the extremely high burning velocity of hydrogen. At a higher compression ratio, the thermal efficiency in the stoichiometric condition was improved, nevertheless a precise control of ignition timing was required to suppress a hard knock. From the experimental results of engine performance in a variety of parameters, optimal use of hydrogen was exhibited for different engine loads.


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    Titel :

    Knock Characteristics and Performance in an SI Engine With Hydrogen and Natural-Gas Blended Fuels


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Mohammadi, Ali (Autor:in) / Kawasaki, Kiyoshi (Autor:in) / Shioji, Masahiro (Autor:in) / Kitazaki, Masato (Autor:in) / Eguchi, Shingo (Autor:in)

    Kongress:

    2004 SAE Fuels & Lubricants Meeting & Exhibition ; 2004



    Erscheinungsdatum :

    2004-06-08




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    2004-01-1929 Knock Characteristics and Performance in an SI Engine With Hydrogen and Natural-Gas Blended Fuels

    Shioji, M. / Kitazaki, M. / Mohammadi, A. et al. | British Library Conference Proceedings | 2004




    Anti-knock fuels

    Campbell, C. | Engineering Index Backfile | 1942