Port injection of ethanol addition as an ignition inhibitor was implemented to control ignition timing and expand the operating range in DME fueled HCCI combustion. The ethanol reduced the rate of low-temperature oxidation and consequently delayed the onset of the high-temperature reaction with ultra-low NOx over a wide operating range. Along with the ethanol addition, changes in intake temperature, overall equivalence ratio, and engine speed are investigated and shown to be effective in HCCI combustion control and to enable an extension of operation range. A chemical reaction analysis was performed to elucidate details of the ignition inhibition on low-temperature oxidation of DME-HCCI combustion.


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    Title :

    Improvement in DME-HCCI Combustion with Ethanol as a Low-Temperature Oxidation Inhibitor


    Additional title:

    Sae Int. J. Fuels Lubr
    Sae International Journal of Fuels and Lubricants


    Contributors:
    Ogawa, Hideyuki (author) / Zhang, Hu (author) / Hasegawa, Ryo (author)

    Conference:

    SAE International Powertrains, Fuels and Lubricants Meeting ; 2011



    Publication date :

    2011-08-30


    Size :

    10 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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