For better understanding of the in-cylinder combustion characteristics of DME, combustion radicals of a direct injection DME-Fueled compression ignition engine were observed using a spectroscopic method. In this initial report, the emission intensity of OH, CH, CHO, C2 and NO radicals was measured using a photomultiplier. These radicals could be measured with wavelength resolution (half-width) of about 3.3 nm. OH and CHO radicals appeared first, and then CH radical emission was detected. After that, the combustion radicals were observed using a high-speed image intensified video camera. C2 and CH radicals were able to observe roughly as images. However, the emission intensity of DME combustion was not strong enough to take OH, CHO and NO radical images. CH radical combustion occurred near the chamber wall and burned like a ring, as combustion progress, indicating active heat release occurred near the chamber wall.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Combustion Radicals Observation of DME Engine by Spectroscopic Method


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2002 World Congress & Exhibition ; 2002



    Publication date :

    2002-03-04




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Combustion radicals observation of DME engine by spectroscopic method

    Oguma,M. / Hyun,G. / Alam,M. et al. | Automotive engineering | 2002


    Combustion Radicals Observation of DME Engine by Spectroscopic Method

    Oguma, M. / Hyun, G. / Alam, M. et al. | British Library Conference Proceedings | 2002


    Combustion Radicals Observation of DME Diesel Engine by Spectroscopic Method (2^n^d Report) -Observation Using Band-Pass Filters-

    Oguma, M. / Goto, S. / Konno, M. et al. | British Library Conference Proceedings | 2001


    Spectroscopic study of combustion diagnostics on hydroxyl radicals

    ESKRIDGE, RICHARD / HUNG, R. / TSAO, Y. | AIAA | 1989