A single-cylinder engine was used to study the potential of a high-efficiency combustion concept called gasoline direct-injection compression-ignition (GDCI). Low temperature combustion was achieved using multiple injections, intake boost, and moderate EGR to reduce engine-out NOx and PM emissions engine for stringent emissions standards. This combustion strategy benefits from the relatively long ignition delay and high volatility of regular unleaded gasoline fuel.Tests were conducted at 6 bar IMEP - 1500 rpm using various injection strategies with low-to-moderate injection pressure. Results showed that triple injection GDCI achieved about 8 percent greater indicated thermal efficiency and about 14 percent lower specific CO2 emissions relative to diesel baseline tests on the same engine. Heat release rates and combustion noise could be controlled with a multiple-late injection strategy for controlled fuel-air stratification. Estimated heat losses were significantly reduced. GDCI has good potential for full-time operation over the US Federal drive cycle.


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    Titel :

    Gasoline Direct Injection Compression Ignition (GDCI) - Diesel-like Efficiency with Low CO2 Emissions


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Husted, Harry (Autor:in) / Sinnamon, James (Autor:in) / Hoyer, Kevin (Autor:in) / Sellnau, Mark (Autor:in)

    Kongress:

    SAE 2011 World Congress & Exhibition ; 2011


    Erschienen in:

    Erscheinungsdatum :

    2011-04-12


    Format / Umfang :

    13 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Part-Load Operation of Gasoline Direct-Injection Compression Ignition (GDCI) Engine

    Husted, Harry / Sinnamon, James / Kim, Junghwan et al. | SAE Technical Papers | 2013


    Development of a Gasoline Direct Injection Compression Ignition (GDCI) Engine

    Husted, Harry / Sinnamon, James / Hoyer, Kevin et al. | SAE Technical Papers | 2014