Experiments were performed on a homogeneously fueled compression ignition gasoline-type engine with a high degree of intake charge preheating. It was observed that fuels that contained lower end and/or non-branched hydrocarbons (gasoline and an 87 octane primary reference fuel (PRF) blend) exhibited sensitivity to thermal conditions in the surge tanks upstream of the intake valves. The window of intake charge temperatures, measured near the intake valve, that provided acceptable combustion was shifted to lower values when the upstream surge tank gas temperatures were elevated. The same behavior, however, was not observed while using isooctane as a fuel. Gas chromatograph mass spectrometer analysis of the intake charge revealed that oxygenated species were present with PRF 87, and the abundance of the oxygenated species appeared to increase with increasing surge tank gas temperatures. No significant oxygenated species were detected when running with isooctane. The presence of the oxygenated species for PRF 87 fueling indicated that reactions were occurring in the intake surge tanks which resulted in needing lower intake charge temperatures to achieve autoignition.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The Effects of Intake Charge Preheating in a Gasoline-Fueled HCCI Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Powertrain & Fluid Systems Conference & Exhibition ; 2005



    Publication date :

    2005-10-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The effects of intake charge preheating on a gasoline-fueled HCCI engine

    Iverson,R.J. / Herold,R.E. / Augusta,R. et al. | Automotive engineering | 2005


    A Study of Combustion System in a Gasoline-Fueled HCCI Engine.

    Kobayashi, T. / Kim, K. / Katsumata, S. et al. | British Library Conference Proceedings | 2006


    A Study of a Gasoline-fueled HCCI Engine∼Mode Changes from SI Combustion to HCCI Combustion∼

    Wada, Hiroki / Nakamura, Takeshi / Urushihara, Tomonori et al. | SAE Technical Papers | 2008


    A Study of a Gasoline-fueled HCCI Engine ˜Mode Changes from SI Combustion to HCCI Combustion˜

    Matsuda, T. / Wada, H. / Kono, T. et al. | British Library Conference Proceedings | 2008